IAD - YOW

C$ 124 Find Cheap Flights from Washington Dulles Airport to Ottawa – Compare and Save

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Everything you should know

Cheapest round-trip
C$ 380
Typical prices: C$ 599-C$ 860
Air Canada
Mon 10/12Mon 17/12
IAD - YOW • 1 stop
Cheapest direct flights
C$ 575
Typical prices: C$ 674-C$ 922
Air Canada
Mon 10/12Mon 17/12
IAD - YOW • Direct
Direct flights
Every day
You can fly direct with United Airlines. Average duration is 1h 50m
Direct flights
+1
Direct flights
+1
When to book
15 weeks
in advance
Our data shows that travellers who book at least 15 weeks in advance save around 60% compared to booking last minute.
Insights
Insights
When to travel
March
Cheapest • 10% price drop
June
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Toronto Pearson Intl (YYZ)
Cheapest • Avg C$ 603 (round-trip)
Toronto Island (YTZ)
Shortest trip • 4h 16m (one-way)
Insights
Insights
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We hope you enjoy your trip to Ottawa!
Flight Deals
Booking Insights
Expert advice
Flight Deals

Cheap Flights from Dulles Intl to Ottawa (IAD-YOW)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Dulles Intl to Ottawa

Thu, 10 Dec - Thu, 17 Dec
Air Canada Logo
5:20 p.m. - 9:52 p.m.IAD  Washington, D.C. Dulles Intl-YOW Ottawa
4h 32m1 stop Toronto Island
Air Canada Logo
9:00 a.m. - 3:45 p.m.YOW  Ottawa-IAD Washington, D.C. Dulles Intl
6h 45m2 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl
C$ 380Air Canada
Thu, 10 Dec - Thu, 17 Dec
Air Canada Logo
5:20 p.m. - 9:52 p.m.IAD  Washington, D.C. Dulles Intl-YOW Ottawa
4h 32m1 stop Toronto Island
Air Canada Logo
6:00 a.m. - 3:45 p.m.YOW  Ottawa-IAD Washington, D.C. Dulles Intl
9h 45m1 stop Toronto Pearson Intl
C$ 394Air Canada
Sat, 12 Dec - Mon, 14 Dec
Porter Airlines Logo
11:20 a.m. - 4:38 p.m.IAD  Washington, D.C. Dulles Intl-YOW Ottawa
5h 18m1 stop Toronto Island
Porter Airlines Logo
12:15 p.m. - 5:45 p.m.YOW  Ottawa-IAD Washington, D.C. Dulles Intl
5h 30m1 stop Toronto Island
C$ 431Porter Airlines
Sat, 12 Dec - Mon, 14 Dec
Porter Airlines Logo
11:20 a.m. - 4:38 p.m.IAD  Washington, D.C. Dulles Intl-YOW Ottawa
5h 18m1 stop Toronto Island
Porter Airlines Logo
12:15 p.m. - 5:45 p.m.YOW  Ottawa-IAD Washington, D.C. Dulles Intl
5h 30m1 stop Toronto Island
C$ 432Porter Airlines
Fri, 27 Nov - Mon, 30 Nov
Porter Airlines Logo
11:20 a.m. - 4:37 p.m.IAD  Washington, D.C. Dulles Intl-YOW Ottawa
5h 17m1 stop Toronto Island
Porter Airlines Logo
12:15 p.m. - 5:44 p.m.YOW  Ottawa-IAD Washington, D.C. Dulles Intl
5h 29m1 stop Toronto Island
C$ 457Porter Airlines
Mon, 16 Nov - Mon, 23 Nov
Multiple Airlines Logo
6:07 p.m. - 5:24 p.m.IAD  Washington, D.C. Dulles Intl-YOW Ottawa
23h 17m1 stop Fort Lauderdale
Multiple Airlines Logo
12:15 p.m. - 5:44 p.m.YOW  Ottawa-IAD Washington, D.C. Dulles Intl
5h 29m1 stop Toronto Island
C$ 459Multiple Airlines
Wed, 18 Nov - Mon, 23 Nov
Porter Airlines Logo
11:20 a.m. - 4:37 p.m.IAD  Washington, D.C. Dulles Intl-YOW Ottawa
5h 17m1 stop Toronto Island
Porter Airlines Logo
12:15 p.m. - 5:44 p.m.YOW  Ottawa-IAD Washington, D.C. Dulles Intl
5h 29m1 stop Toronto Island
C$ 460Porter Airlines
Mon, 16 Nov - Mon, 23 Nov
Porter Airlines Logo
11:20 a.m. - 6:12 p.m.IAD  Washington, D.C. Dulles Intl-YOW Ottawa
6h 52m1 stop Toronto Island
Porter Airlines Logo
12:15 p.m. - 5:44 p.m.YOW  Ottawa-IAD Washington, D.C. Dulles Intl
5h 29m1 stop Toronto Island
C$ 464Porter Airlines
Mon, 16 Nov - Mon, 23 Nov
Multiple Airlines Logo
6:07 p.m. - 5:24 p.m.IAD  Washington, D.C. Dulles Intl-YOW Ottawa
23h 17m1 stop Fort Lauderdale
Multiple Airlines Logo
7:05 a.m. - 10:02 p.m.YOW  Ottawa-IAD Washington, D.C. Dulles Intl
14h 57m1 stop Fort Lauderdale
C$ 471Multiple Airlines
Tue, 17 Nov - Mon, 23 Nov
Multiple Airlines Logo
11:20 a.m. - 6:12 p.m.IAD  Washington, D.C. Dulles Intl-YOW Ottawa
6h 52m1 stop Toronto Island
Multiple Airlines Logo
7:05 a.m. - 10:02 p.m.YOW  Ottawa-IAD Washington, D.C. Dulles Intl
14h 57m1 stop Fort Lauderdale
C$ 483Multiple Airlines
Booking Insights

Price, demand, and travel trends for Washington, D.C. Dulles Intl Airport to Ottawa flights

Use KAYAK data on prices, travel dates, airlines, and seasonal trends to compare options and book flights with more confidence.

How much is a round-trip flight from Washington, D.C. Dulles Intl Airport to Ottawa?

Round-trip flights from Washington, D.C. Dulles Intl Airport to Ottawa typically range from C$ 599 to C$ 860. The lowest price found in the past 5 days was C$ 380, on Air Canada.

What's the cheapest day of the week to fly from Washington, D.C. Dulles Intl Airport to Ottawa?

Based on deals KAYAK users found in the last 12 months, Thursday is the cheapest day of the week to fly from Washington, D.C. Dulles Intl Airport to Ottawa. It's 7% cheaper than the average day, while Monday is the most expensive, with prices 11% higher.

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

•March is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Ottawa at C$ 645 round-trip.
•April (C$ 808) and June (C$ 793) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 25% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are flights from Washington, D.C. Dulles Intl Airport to Ottawa the cheapest?

Flights from Washington, D.C. Dulles Intl Airport to Ottawa are cheapest 15 weeks before departure. Booking in this window typically costs about 60% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Find deals
Expert advice

Expert advice for your flight from Dulles Intl to Ottawa

 
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on Air Canada, United Airlines and IAD

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
Mark Stachiew

Mark Stachiew

Expert on YOW

Mark Stachiew has been exploring the world and writing about it for more than 30 years. His travel stories have appeared in numerous newspapers, magazines and online publications in Canada, the United States and beyond.

Read more

Key details for Washington, D.C. Dulles Intl Airport to Ottawa flights

Low season

February

Cheapest flight

C$ 124
Beat the crowds with an average 28% drop in traveller numbers.
The most popular month to fly with an average 50% increase in traveller numbers.
One-way flight from Washington, D.C. Dulles Intl Airport to Ottawa

When to book flights from Dulles Intl to Ottawa

Are your dates flexible? Find out the best times to travel from Dulles Intl to Ottawa based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Washington, D.C. Dulles Intl Airport to Ottawa flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines, and booking tips.

  • What are the earliest and latest flights from Washington, D.C. Dulles Intl Airport to Ottawa?

    These are the earliest and latest flight times available from Washington, D.C. Dulles Intl Airport to Ottawa:

    • Earliest: departs at 1:17 pm and lands at 3:07 pm
    • Latest: departs at 5:40 pm and lands at 7:30 pm.

    The flight takes about 1h 50m.

  • Which cabin classes can I book on flights from Washington, D.C. Dulles Intl Airport to Ottawa?

    Two cabin classes are available on flights from Washington, D.C. Dulles Intl Airport to Ottawa:

    • Economy Class
    • Business Class

  • How long does a flight from Washington, D.C. Dulles Intl Airport to Ottawa take?

    A direct flight from Washington, D.C. Dulles Intl Airport to Ottawa takes 1h 50m, covering 1,164 km.

  • Do I need a passport to fly from Washington, D.C. Dulles Intl Airport to Ottawa?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How much should I expect to pay for a Washington, D.C. Dulles Intl Airport to Ottawa flight?

    Round-trip flights from Washington, D.C. Dulles Intl Airport to Ottawa range from C$ 599 to C$ 860, with an average of C$ 718 over the past 12 months. Anything below C$ 599 counts as a good deal.

  • How expensive are last-minute Washington, D.C. Dulles Intl Airport to Ottawa flights?

    Last-minute fares on this route (booked within two weeks of departure) run 66% above the C$ 718 route average. Book 15 weeks before departure for the lowest fares.

  • How much can I save by taking a layover when flying from Washington, D.C. Dulles Intl Airport to Ottawa?

    On this route, layover flights are cheaper than direct options on average. Layover fares average C$ 603 round-trip via Toronto Pearson Intl (YYZ), compared to C$ 753 for direct.

  • What is the standard checked bag allowance on flights from Washington, D.C. Dulles Intl Airport to Ottawa?

    There is no standard. Checked bag policies vary by airline on this route. Most carriers charge C$ 56–C$ 97 for the first checked bag in economy. Premium fares and elite status bookings typically include a free checked bag.

  • Which aircraft model is used most often on flights from Washington, D.C. Dulles Intl Airport to Ottawa?

    The Embraer 175 (Enhanced Winglets) family is used most often on this route, operated mainly by United Airlines and Air Canada. Other aircraft seen on the route include Canadair (Bombardier) Regional Jet CRJ-550 variants.

  • How are flight departures from Washington, D.C. Dulles Intl Airport to Ottawa spread across the day?

    Afternoon is the busiest departure period on Washington, D.C. Dulles Intl Airport to Ottawa flights, with 50% leaving in that window. Evening departures account for 50%, Morning flights for 0%, and Night flights for 0%.

  • Have flight prices from Washington, D.C. Dulles Intl Airport to Ottawa changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about C$ 380 to C$ 2,514. That means the highest observed fare was about 7x higher than the lowest one.

  • How are flight prices from Washington, D.C. Dulles Intl Airport to Ottawa looking right now?

    One-way fares from Washington, D.C. Dulles Intl Airport to Ottawa are currently lower than usual. Average one-way flight prices are about C$ 185, which is 51% below the typical average for this route.

  • What car rental options are available at Ottawa Airport (YOW)?

    Ottawa Airport (YOW) hosts 5 major car rental companies, with daily rates averaging C$ 59 for economy cars. Top options include:

    • Routes Car & Truck Rentals
    • Europcar
    • Alamo
    • Budget
    • Enterprise Rent-A-Car

  • Which airports can I use when flying from Washington, D.C. Dulles Intl Airport to Ottawa?

    Flights from Washington, D.C. Dulles Intl Airport to Ottawa usually depart from Washington, D.C. Dulles Intl (IAD) and arrive at Ottawa (YOW).

  • Which airports do connecting flights from Washington, D.C. Dulles Intl Airport to Ottawa pass through?

    Connecting flights from Washington, D.C. Dulles Intl Airport to Ottawa most commonly pass through:

    • Toronto Island (YTZ) – 99% of one-stop connections
    • Toronto Pearson Intl (YYZ) – 1% of one-stop connections

  • Can I save money by using flexible dates for flights from Washington, D.C. Dulles Intl Airport to Ottawa?

    Yes. Flexible dates can save you up to 16% on flights from Washington, D.C. Dulles Intl Airport to Ottawa. Thursday is the cheapest departure day at C$ 674 round-trip on average, while Monday is the most expensive at C$ 799, a difference of C$ 124.

    KAYAK's flexible dates feature shows options up to three days before and after your selected dates, making it easier to compare nearby fares.

  • Which airlines fly from Washington, D.C. Dulles Intl Airport to Ottawa?

    Only United Airlines operates flights between Washington, D.C. Dulles Intl Airport and Ottawa.

  • How much time can I save by choosing a different layover airport when travelling from Washington, D.C. Dulles Intl Airport to Ottawa?

    Flying via Toronto Island (YTZ) gives the shortest average 1-stop total travel time at 4h 16m, compared with 5h 54m via Toronto Pearson Intl (YYZ).

  • Which popular places can I visit in Ottawa?

    Some of the most popular sights in Ottawa are National Arts Centre, Shaw Centre, and Canal Rideau Memorial. These are among the most viewed places in Ottawa on KAYAK.

  • Which airlines offer extra legroom and free seat selection on Washington, D.C. Dulles Intl Airport to Ottawa flights?

    Among airlines operating Washington, D.C. Dulles Intl Airport to Ottawa flights:

    • United Airlines: offers free seat selection

    Extra legroom and free seat selection availability depends on fare class and route.

  • Which airlines include bags at no extra cost on Washington, D.C. Dulles Intl Airport to Ottawa flights?

    Here are some options for this route, based on selected ticket types and cabin classes:

    • United Airlines: a carry-on bag and a checked bag in Business Class
    • Air Canada: a carry-on bag and a checked bag in Business Class
    • Avianca: a cabin bag in Economy Class class

    Baggage allowance can vary by ticket type, cabin class, route, and airline, so always check the fare details before booking.

Your guide to booking Washington, D.C. Dulles Intl Airport to Ottawa flights

Get tips on when to book, when to fly, and what to know before your trip.
  • If your dates are flexible, aim for a Thursday departure and avoid flying on Monday. On this route, Thursday flights average C$ 674, about C$ 124 less than Monday fares (16% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 15 weeks before you fly. On this route, that window historically saves about 60% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Washington, D.C. Dulles Intl Airport to Ottawa trip for March. Fares historically average C$ 645 round-trip in that month – typically C$ 164 less than the most expensive month, which is April (based on the last 12 months).
  • If you have the time, taking a 1-stop flight through Toronto Pearson Intl Airport (YYZ) can be cheaper than flying direct. The cheapest layover option averages C$ 603 round-trip on this route – about C$ 150 less than direct flights (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Ottawa Airport.

    • Hilton Garden Inn Ottawa Airport
    • Hampton Inn by Hilton Ottawa Airport
    • Ramada by Wyndham Ottawa On The Rideau

Prefer to fly direct from Washington Dulles Airport to Ottawa?

 
Find which airlines fly direct from Washington, D.C. Dulles Intl Airport to Ottawa Airport, which days they fly and book direct flights.

Direct departures

Washington, D.C. Dulles Intl to Ottawa

Monday

United Airlines

United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

United Airlines

United Airlines

Friday

United Airlines

United Airlines

Saturday

United Airlines

United Airlines

Sunday

United Airlines

United Airlines

See more nonstop flights

Direct returns

Ottawa to Washington, D.C. Dulles Intl

Monday

United Airlines

United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

United Airlines

United Airlines

Friday

United Airlines

United Airlines

Saturday

United Airlines

United Airlines

Sunday

United Airlines

United Airlines

See more nonstop flights

More options for your flight from Dulles Intl to Ottawa

Complete your trip to Ottawa with a hotel stay or car rental

Car rentals in Ottawa
Hotels in Ottawa
Vacations in Ottawa