IAD

C$ 149 Find Cheap Flights to Washington, D.C.

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Washington, D.C. departing on 18/5. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Washington, D.C. Dulles Intl Airport

 
These are the airlines KAYAK users have selected most often from within our search results for flights to Washington, D.C.
These are the airlines KAYAK users have selected most often from within our search results for flights to Washington, D.C.
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Everything you should know

Cheapest round-trip
C$ 253
Overall average: C$ 380
WestJet
Fri 29/5Mon 1/6
YYC - IAD • Direct
Cheapest one-way flights
C$ 149
Typical prices: C$ 250-C$ 500
WestJet
Mon 18/5
YYC - IAD • Direct
Our travellers' advice
AI-powered summary based on content written by travel experts and KAYAK users. AI can make mistakes.
United's Economy Plus seats offer 15 cm more legroom.
Choose smaller jets on Air Canada for more legroom.
Expert advice
Expert advice
+1
+1
Expert advice
Expert advice
+1
Top airlines
United Airlines
Most flights • 57 per week
Porter Airlines
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Top routes
YYC-IAD
Cheapest
YYZ-IAD
Most popular
Insights
Insights
Insights
Insights
When to travel
July
Cheapest • 18% price drop
July
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
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KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Washington, D.C.!
Flight Deals
Booking Insights
Expert advice
Flight Deals

Cheap Flights to Washington, D.C.

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights to Washington, D.C. that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals to Washington, D.C.

Fri, 29 May - Mon, 1 Jun
WestJet Logo
11:30 a.m. - 5:50 p.m.
YYC
-
IAD
4h 20mdirect
WestJet Logo
6:45 p.m. - 9:35 p.m.
IAD
-
YYC
4h 50mdirect
C$ 253WestJet
Fri, 6 Mar - Sun, 8 Mar
Air Canada Logo
2:15 p.m. - 3:46 p.m.
YYZ
-
IAD
1h 31mdirect
Air Canada Logo
9:00 a.m. - 10:29 a.m.
IAD
-
YYZ
1h 29mdirect
C$ 272Air Canada
Fri, 20 Feb - Fri, 27 Feb
Multiple Airlines Logo
3:45 p.m. - 5:14 p.m.
YTZ
-
IAD
1h 29mdirect
Multiple Airlines Logo
6:30 p.m. - 8:00 p.m.
IAD
-
YTZ
1h 30mdirect
C$ 276Multiple Airlines
Sat, 14 Mar - Sun, 15 Mar
Porter Airlines Logo
11:00 a.m. - 12:29 p.m.
YTZ
-
IAD
1h 29mdirect
Porter Airlines Logo
11:40 a.m. - 1:10 p.m.
IAD
-
YTZ
1h 30mdirect
C$ 278Porter Airlines
Thu, 12 Mar - Sun, 22 Mar
Porter Airlines Logo
3:45 p.m. - 5:14 p.m.
YTZ
-
IAD
1h 29mdirect
Porter Airlines Logo
11:40 a.m. - 1:10 p.m.
IAD
-
YTZ
1h 30mdirect
C$ 283Porter Airlines
Sat, 24 Jan - Tue, 27 Jan
United Airlines Logo
2:45 p.m. - 4:30 p.m.
YYZ
-
IAD
1h 45mdirect
United Airlines Logo
8:29 a.m. - 1:43 p.m.
IAD
-
YYZ
5h 14m1 stop
C$ 285United Airlines
Thu, 22 Jan - Sun, 25 Jan
Multiple Airlines Logo
8:50 a.m. - 10:19 a.m.
YTZ
-
IAD
1h 29mdirect
Multiple Airlines Logo
11:35 a.m. - 1:09 p.m.
IAD
-
YTZ
1h 34mdirect
C$ 286Multiple Airlines
Thu, 12 Mar - Tue, 17 Mar
United Airlines Logo
7:40 p.m. - 9:21 p.m.
YYZ
-
IAD
1h 41mdirect
United Airlines Logo
12:33 p.m. - 2:14 p.m.
IAD
-
YYZ
1h 41mdirect
C$ 288United Airlines
Mon, 4 May - Mon, 18 May
Delta Logo
9:15 p.m. - 2:05 p.m.
YYC
-
IAD
14h 50m2 stops
Delta Logo
6:45 p.m. - 9:35 p.m.
IAD
-
YYC
4h 50mdirect
C$ 380Delta
Wed, 11 Feb - Fri, 20 Feb
Delta Logo
11:40 a.m. - 11:10 p.m.
YVR
-
IAD
8h 30m1 stop
Delta Logo
5:13 p.m. - 11:59 p.m.
IAD
-
YVR
9h 46m2 stops
C$ 420Delta
Booking Insights

KAYAK's insights & trends for flights to Washington, D.C.

Get data-powered insights and trends into flights to Washington, D.C. to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest flight to Washington, D.C.?

These are the best round-trip prices found by users searching on KAYAK in the last 72 hours.

In the last 3 days, the lowest price for a flight to Washington, D.C. was C$ 149 for a one-way ticket from Calgary and C$ 253 for a round-trip. The most popular route searched for by our users was for flights from Toronto to Washington, D.C. and the best round-trip deal found in the last 3 days was C$ 272.

How much is a flight to Washington, D.C. Dulles Intl Airport?

The average and cheapest price for all round-trip flights to Washington, D.C. Dulles Intl Airport from each origin found by users searching on KAYAK in the last month.

On average, a flight to Washington, D.C. Dulles Intl Airport costs C$ 720. The cheapest price found on KAYAK in the last 2 weeks cost C$ 161 and departed from Toronto Island Airport. The most popular routes on KAYAK are Toronto to Washington, D.C. Dulles Intl Airport which costs C$ 1,030 on average, and Montreal to Washington, D.C. Dulles Intl Airport, which costs C$ 1,107 on average.

See prices from:

What is the cheapest month to fly to Washington, D.C. Dulles Intl Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights to Washington, D.C. Dulles Intl Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights to Washington, D.C. Dulles Intl Airport is June, where tickets cost C$ 364 on average for one-way flights. On the other hand, the most expensive months are January and February, where the average cost of tickets from Canada is C$ 686 and C$ 651 respectively. For return trips, the best month to travel is July with an average price of C$ 268.

What is a good deal for flights to Washington, D.C. Dulles Intl Airport?

If you’re looking for cheap airfare to Washington, D.C. Dulles Intl Airport, 25% of our users found tickets to Washington, D.C. Dulles Intl Airport for the following prices or less: From Toronto Island Airport C$ 163 one-way - C$ 326 round-trip, from Ottawa C$ 316 one-way - C$ 506 round-trip, from Toronto Pearson Intl Airport C$ 332 one-way - C$ 623 round-trip.

How far in advance should I book a flight to Washington, D.C. Dulles Intl Airport?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights to Washington, D.C. Dulles Intl Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 58 days before departure.

Expert advice

Expert advice for your flight to Washington, D.C.

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airlines
Air Canada

Air Canada's Preferred Economy seats offer up to 10 cm extra legroom for an additional fee.


Air Canada's Aeroplan program offers free membership and points for flights and upgrades.

Porter Airlines

Porter's PorterReserve offers extra legroom, priority boarding, and free ticket changes.


Porter offers free drinks including Canadian wines and craft beers in real glasses.

United Airlines

United's Economy Plus seats offer up to 15 cm more legroom than standard economy seats.


United's Priority Boarding puts you in Zone 2, avoiding carry-on space issues in higher zones.

WestJet

WestJet's Premium cabin offers 5-18 cm more legroom and priority boarding on narrowbody aircraft.


WestJet's EconoFlex fare includes a checked bag, seat selection, and free changes or cancellations.

Air Transat

Air Transat offers in-flight entertainment on most planes; bring your own headphones for the 3.5mm plug.


Air Transat's Eco Flex fare includes a standard seat reservation and no change fees, but fare differences apply.

Delta

Delta's Comfort Plus seats offer up to 8 cm more legroom than Main Cabin seats.


Delta offers free messaging for SkyMiles members on flights with Wi-Fi.

Airports
IAD

The Silver Line Metro connects IAD to D.C. city centre in about 50 minutes, offering a convenient public transport option.

Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on Air Canada, United Airlines, WestJet, Delta and IAD

Stefanie Waldek

Stefanie Waldek

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Read more
John Walton

John Walton

Expert on Porter Airlines and Air Transat

John Walton

John Walton

Independent aviation journalist John Walton took his first flight at eight weeks old and hasn’t stopped travelling since. A world-renowned expert in airlines and the passenger experience, he writes in depth on aviation, is a resident expert on travel in Japan and France, and offers a uniquely queer perspective on travelling the world.

Read more

Good to know – Book Cheap Washington, D.C. Dulles Intl Airport Plane Tickets

Low seasonJanuary
Cheapest flightC$ 149
Best time to beat the crowds (2% less expensive on average)
Flight from Calgary to Washington Dulles Airport

When to book flights to Washington, D.C.

Are your dates flexible? Find out the best times to travel to Washington, D.C. based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. The information is for flights to Washington, D.C. based on your location. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

Flights to Washington, D.C.: the best tips from KAYAK users' own experiences

Insights shared by verified travellers who flew to Washington, D.C. 
Verified travelerFlew with Air Canada
YYZ
-
IAD
Dec 2024
Get on a regional sized (smaller than Boeing 737 or Airbus A320) jet if you can, they are older and have more legroom than newer aircraft.
Verified travelerFlew with United Airlines
YYZ
-
IAD
Nov 2024
Do not carry bigger the specified sized bags for cabin baggage. Only one carry on ba

FAQs - booking Washington, D.C. flights

  • What is the cheapest flight to Washington, D.C.?

    In the last 3 days, the lowest price for a flight to Washington, D.C. was C$ 149 for a one-way ticket from Calgary and C$ 253 for a round-trip. The most popular route searched for by our users was for flights from Toronto to Washington, D.C. and the best round-trip deal found in the last 3 days was C$ 272.

  • How far is Washington, D.C. Dulles Intl Airport from central Washington, D.C.?

    You’ll need to travel 36 km to reach the Washington, D.C. city centre from Washington, D.C. Dulles Intl Airport.

  • How much is a flight to Washington, D.C.?

    On average, a flight to Washington, D.C. costs C$ 720. The cheapest price found on KAYAK in the last 2 weeks cost C$ 161 and departed from Toronto Island Airport.

  • What is the cheapest day to fly to Washington, D.C.?

    Based on KAYAK data, the cheapest day to fly to Washington, D.C. is Friday where tickets can be as cheap as C$ 655. On the other hand, the most expensive day to fly is Sunday, where prices are C$ 974 on average.

  • How does KAYAK find such low prices on flights to Washington, D.C.?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights to Washington, D.C..

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket to Washington, D.C.?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington, D.C. is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights to Washington, D.C.?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Washington, D.C. with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight to Washington, D.C.?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Washington, D.C. up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Washington, D.C. Dulles Intl Airport?

    The cheapest time of day to fly to Washington, D.C. Dulles Intl Airport is generally in the evening, when flights cost C$ 489 on average. The most expensive time of day to fly to Washington, D.C. Dulles Intl Airport is generally at night, which is peak travel time and where the average cost of a ticket is C$ 809.

Top tips for finding cheap flights to Washington, D.C.

  • Looking for cheap airfare to Washington, D.C.? 25% of our users found round-trip tickets to Washington, D.C. for the following prices or less: From Montreal Pierre Elliott Trudeau Intl C$ 678, from Calgary C$ 813, from Ottawa C$ 922
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Washington, D.C. flight deals.

Reviews of the top 5 airlines flying to Washington, D.C.

 
See real verified KAYAK customer reviews for airlines flying to Washington, D.C.. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Canada to Washington, D.C.. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with to Washington, D.C.? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
Porter AirlinesOverall score based on 406 reviews
7.9Comfort
7.6Food
8.2Boarding
7.0Entertainment
8.6Crew
Airline reviews

It was okay. Had a thing with the front desk, she had me repack my suitcases to have them be under the weight restrictions, but then the other one was overweight, she argued with me about it when there were tons of people in line. Wasn’t great.

6.0 GoodJen, Jan 2026
YTZ - BOS
Read more Porter Airlines reviews

It was okay. Had a thing with the front desk, she had me repack my suitcases to have them be under the weight restrictions, but then the other one was overweight, she argued with me about it when there were tons of people in line. Wasn’t great.

Due to a known technical error that Porter has not fixed in over a year, I was unable to check in the children on my reservation online and had to do it at the airport. Upon check in, there were no seats together, which was an issue as we had young children. The gate agent did manage to seat us together by moving other passengers, which was appreciated, but the other passengers were never informed, leading to confusion and delay upon boarding. The flight was over an hour late; no explanation or apology was ever issued. The bags on Porter take a long time to arrive--over half an hour at Hamilton on my inbound flight, and not much better on my return to Edmonton.

On my e-boarding pass it shows free wifi, yet the plane I was on didn’t have wifi. Please remove false advertising from your website and boarding passes

3.5 hr delay for a 1 hr work flight. No information as to why the delay until 20 mins before boarding.

Organization and the adjusted times but the snacks could be of a bigger portion

I like it, but the food isn't good. They need to offer more simple things. This bowls that have so many things your don't know what your are eating. The milenials like it, no the rest. And last but not least, they allowed somebody have a huge dog, vey agressive and fidgety in the flight. That's horrible. No animals should be allowed inside the airplane, what about allergies, etc

Smaller plane. Food and bar service for free is amazing. Drinks were in glass not plastic cups.

Poor landing as we overshot the runway and had to re land the plane. Lost both of my luggage not found as of yet. Had to pay extra money for my luggage in USD, now great my luggage is gone. Will not fly with Porter again.

This flight to St. Johns was really good. Boarding was a breeze. We left spot on time. Seats were actually pretty good. Recliner further than I expected. Three more flights to go we will see if this is the status quo for Porter.👍

I was not happy with AirfareAssist, the agency that kayak advised me would be handling my booking. I was advised by porter airlines that I had been overcharged for the Basic express , a option that I had asked airfare assist to help arrange after I realized that the basic fare I had chosen with porter did not include a carryon. At each checkin porter advised I had been overcharged for this . They advised that money would be refunded to my credit card, however, this is not likely to happen as it is not my name and credit card that appeared on the porter invoice, but that of another individual/agent. When airfare assist was arranging the basic express with porter on my behalf, they asked me to confirm that I agreed to pay $263 USD for this. I did agree, as I was advised this was needed to proceed. When I checked the invoice on the porter website and saw that it was not my name and credit card on the invoice, I was advised that this was how airfareassist processed the payment. The Porter invoice indicated a billed amount of $126USD I will not use Kayak or their designated AirfareAssist again

I did not like I have been charged for my carry on

Onward flight was okay. return from Lisbon was poor as we missed our flight due to a long line at the passport control. Air Transat made no effort to accommodate us even though we were at the passport control 40 minutes prior to the departure.

Very good. A lot better experience then I expected for an economy flight.

It was very good but no tv but the experience was great

Thank you for making my first experience very enjoyable. You made it all very pleasant

Great flight great seats will absolutely fly with you again

Porter airlines was good. I didn't have the best experience when booking through airfare assist however, as I got no final confirmation from them that the flight was booked until I called them. Even then, the confirmation code they gave me was incorrect and couldn't be used for check in. On a positive note airfare assist was actually picked up the phone relatively quickly when calling

The flight crew were very good, polite, and professional. Unfortunately, the rest of the experience left much to be desired. The food was extremely bland—almost tasteless. We chose the non vegetarian .The lasagna was just plain pasta with a tiny garnish and no seasoning. It felt like eating starch only, The bigger issue was with luggage and space. We boarded with three tickets, and while the seats in front of us were nearly empty, all the overhead compartments had already been filled by passengers boarding to the back. This left us and many others with no overhead storage for our carry-ons. Our bags couldn’t fit well under the seats either, which meant we lost the little legroom we had. The result was a horrible, cramped experience—sore knees, no space to stretch, and no way to rest or sleep comfortably. According to the crew this was a rather normal thing. It is obviously normal that people board with handbag and carry on but they should be only allowed to use their overhead compartment and under their seat not the way it is managed that all the spaces in the front of the plane being occupied by the people sitting way back in the plane.

Nice complete meal included and great services. Plus the plane was very clean.

Everything was horrible. On the day of my departure, I was denied check-in and boarding because my reservation only showed one of my last names, while my passport contains both. This minor discrepancy could have been easily corrected, but I was informed that no adjustment could be made. As a result, I lost not only my outbound flight but also my return flight and had to purchase a new ticket at a significantly higher cost.

The flight was delayed for 1:30 hours for maintenance issues. They should give more information about connecting flights. For a Business Cabin the Crew was mediocre.

The food is terrible. The same pasta or chicken with bad taste and presentation

It was probably one of the worst flights I’ve been on. The restrooms were never cleaned or stocked. The food was very subpar, and i usually enjoy airline food, so I was disappointed. It was just all around a bad experience. The only saving grace was the flight attendants.

The only downside was my cell phone charger wouldn’t work in the charging port but everyone else’s would work in them all. My cell phone cable works fine in my hotel room in Frankfurt.

Great crew, excellent landing, good food. Over all great experience. Thank you!

One bag is incorrect and not acceptable for an international flight. The food was not just good. I won't fly with them again.

Not pleasant trip cross country when the entertainment and WiFi system not working. No entertainment for entirety of route. Staff was rather nonchalant in that they dismissed the problem due to age of plane. It would have been nice to know this up front so I could have come prepared to read or download movies before boarding Coincidentally or not, there was a similar issue with the entertainment system on my previous flight I took on my fist leg of the trip. There are no seat TVs, so you must rely on the app when it works. United can do better. Also, what use it it to pay for boarding group 2 when half of the passengers are in the same line as you?

Crew was dismissive. Snacks and refills not offered. Poor business class experience. Bed not comfortable compared to Emirates or BA.

Flight was delayed for 5 hours because crew didn’t have enough time to rest - this seems like it could have been avoided with better scheduling. Food was not good.

IAD with the archaic people movers is just a place to be avoided.

Great flight, great landing, nice staff. Our seats were a little cramped.

I will not be flying with westjet again. I was uncomfortable in my seat. The position made my back hurt so bad. My wife was able to fit the seatbelt around her with out an extension but was unable to put the tray table down or fit in the seat for that matter. Our bag was smashed and I spent two hours trying to fill out the application for a damaged bag before I gave up. The 80 photos I took would not work and nothing telling me the format to upload them as.. I made the mistake of unpacking the bag before taking photos so no claim for me. Next trip to Canada I will have to use air Canada.

Overall good experience. The wait for baggage at our destination was quite long, but other than that everything was good as expected

Airplane is too small. Crew, especially the flight attendant who looked after our area, was not at all friendly and a touch authoratative. She may have been the most gruff flight attendant i've come across in 40 years of business travel

I selected "carry-on" for a round trip on Kayak, but my return flight on WestJet did not include a carry-on and they would not allow me to add one. My only option was to add a "checked bag" which I had to wait for on the luggage carousel after landing. Not a good experience.

I was seated near a "stinky" person. That's not the fault of Westjet🙁😶‍🌫️

Do not fly on WestJet if you have a connection. It failed to integrate with my connecting Delta flight and I almost missed it.

There was a man who was very rude at boarding. On the other hand personal bag measuring box is too small compared to USA airlines,

A little better seat cushions would be appreciated. Crews were all good.

The process and flight were both smooth and trouble free

My seat was not comfortable. Flight was smooth. Regretfully we had two delays before takeoff

Amazing service, with enthusiastic crew members, and some breathtaking views of Vancouver. No IFE though, as it is only a 1 hour flight on a regional Turboprop jet.

They are very proactive and made our boarding easy and always notified us about any changes well in advance.

My seat was covered in vomit and I will be reaching out to Air Canada

It's kindof ridiculous that your system is even asking me about this since my flight was canceled and I wasn't rescheduled.

3 hr delay at the gate while they were doing maintenance. Next time, do not board passengers while maintenance is being performed

Digital check in is very poor with air canada compaired to other airlines

Baggage delayed we had to catch our cruise without any clothes 😒

Air Canada Rouge is great. Toronto Airport is the usual nightmare

Good but need to be better with the flight times.

Travelling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
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Everything you need to know for your flight to Washington, D.C.