YOW - IAD

C$ 234 Find Cheap Flights from Ottawa to Washington Dulles Airport – Compare and Save

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Everything you should know

Cheapest round-trip
C$ 443
Typical prices: C$ 465-C$ 677
Porter Airlines
Fri 23/11Fri 30/11
YOW - IAD • 1 stop
Cheapest direct flights
C$ 499
Typical prices: C$ 547-C$ 746
Air Canada
Mon 19/11Fri 23/11
YOW - IAD • Direct
Direct flights
Every day
You can fly direct with United Airlines. Average duration is 2h
Direct flights
+1
Direct flights
+1
When to travel
December
Cheapest • 13% price drop
January
Most popular
Good to know
+1
Good to know
+1
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KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you enjoy your trip to Washington, D.C. Dulles Intl Airport!
Flight Deals
Booking Insights
Expert advice
Flight Deals

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

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

Recent round-trip flight deals from Ottawa to Dulles Intl

Mon, 23 Nov - Mon, 30 Nov
Porter Airlines Logo
12:15 p.m. - 5:44 p.m.YOW  Ottawa-IAD Washington, D.C. Dulles Intl
5h 29m1 stop Toronto Island
Porter Airlines Logo
11:20 a.m. - 4:37 p.m.IAD  Washington, D.C. Dulles Intl-YOW Ottawa
5h 17m1 stop Toronto Island
C$ 443Porter Airlines
Thu, 3 Dec - Sun, 6 Dec
Air Canada Logo
12:05 p.m. - 4:47 p.m.YOW  Ottawa-IAD Washington, D.C. Dulles Intl
4h 42m1 stop Toronto Island
Air Canada Logo
5:20 p.m. - 9:52 p.m.IAD  Washington, D.C. Dulles Intl-YOW Ottawa
4h 32m1 stop Toronto Island
C$ 450Air Canada
Mon, 23 Nov - Mon, 30 Nov
Air Canada Logo
12:05 p.m. - 4:47 p.m.YOW  Ottawa-IAD Washington, D.C. Dulles Intl
4h 42m1 stop Toronto Island
Air Canada Logo
5:20 p.m. - 9:52 p.m.IAD  Washington, D.C. Dulles Intl-YOW Ottawa
4h 32m1 stop Toronto Island
C$ 450Air Canada
Thu, 19 Nov - Mon, 23 Nov
Air Canada Logo
2:00 p.m. - 3:53 p.m.YOW  Ottawa-IAD Washington, D.C. Dulles Intl
1h 53mdirect
Air Canada Logo
5:20 p.m. - 9:52 p.m.IAD  Washington, D.C. Dulles Intl-YOW Ottawa
4h 32m1 stop Toronto Island
C$ 456Air Canada
Fri, 11 Dec - Mon, 14 Dec
Multiple Airlines Logo
2:00 p.m. - 3:53 p.m.YOW  Ottawa-IAD Washington, D.C. Dulles Intl
1h 53mdirect
Multiple Airlines Logo
5:20 p.m. - 9:52 p.m.IAD  Washington, D.C. Dulles Intl-YOW Ottawa
4h 32m1 stop Toronto Island
C$ 459Multiple Airlines
Thu, 19 Nov - Mon, 23 Nov
Multiple Airlines Logo
2:00 p.m. - 3:53 p.m.YOW  Ottawa-IAD Washington, D.C. Dulles Intl
1h 53mdirect
Multiple Airlines Logo
5:20 p.m. - 9:52 p.m.IAD  Washington, D.C. Dulles Intl-YOW Ottawa
4h 32m1 stop Toronto Island
C$ 464Multiple Airlines
Wed, 2 Dec - Thu, 3 Dec
United Airlines Logo
6:00 a.m. - 7:22 a.m.YOW  Ottawa-IAD Washington, D.C. Dulles Intl
25h 22m1 stop Newark
United Airlines Logo
1:19 p.m. - 3:07 p.m.IAD  Washington, D.C. Dulles Intl-YOW Ottawa
1h 48mdirect
C$ 477United Airlines
Fri, 13 Nov - Sun, 15 Nov
Porter Airlines Logo
12:15 p.m. - 5:44 p.m.YOW  Ottawa-IAD Washington, D.C. Dulles Intl
5h 29m1 stop Toronto Island
Porter Airlines Logo
11:20 a.m. - 4:37 p.m.IAD  Washington, D.C. Dulles Intl-YOW Ottawa
5h 17m1 stop Toronto Island
C$ 481Porter Airlines
Thu, 17 Dec - Tue, 22 Dec
Porter Airlines Logo
12:15 p.m. - 5:14 p.m.YOW  Ottawa-IAD Washington, D.C. Dulles Intl
4h 59m1 stop Toronto Island
Porter Airlines Logo
11:20 a.m. - 4:38 p.m.IAD  Washington, D.C. Dulles Intl-YOW Ottawa
5h 18m1 stop Toronto Island
C$ 490Porter Airlines
Wed, 2 Dec - Thu, 3 Dec
United Airlines Logo
6:00 a.m. - 7:22 a.m.YOW  Ottawa-IAD Washington, D.C. Dulles Intl
25h 22m1 stop Newark
United Airlines Logo
1:19 p.m. - 3:07 p.m.IAD  Washington, D.C. Dulles Intl-YOW Ottawa
1h 48mdirect
C$ 509United Airlines
Booking Insights

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

Round-trip flights from Ottawa to Washington, D.C. Dulles Intl Airport typically range from C$ 465 to C$ 677. The lowest price found in the past 5 days was C$ 443, on Porter Airlines.

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

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

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

•December is the cheapest month to fly from Ottawa to Washington, D.C. Dulles Intl Airport at C$ 494 round-trip.
•August (C$ 681) and February (C$ 636) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 37% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

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Expert advice

Expert advice for your flight from Ottawa to Dulles Intl

 
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 Ottawa to Washington, D.C. Dulles Intl Airport flights

Low season

October

Cheapest flight

C$ 234
Beat the crowds with an average 46% drop in traveller numbers.
The most popular month to fly with an average 31% increase in traveller numbers.
One-way flight from Ottawa to Washington, D.C. Dulles Intl Airport

When to book flights from Ottawa to Dulles Intl

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

Your Ottawa to Washington, D.C. Dulles Intl Airport 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 Ottawa to Washington, D.C. Dulles Intl Airport?

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

    • Earliest: departs at 9:45 am and lands at 11:45 am
    • Latest: departs at 2:00 pm and lands at 4:00 pm.

    The flight takes about 2h.

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

    Only Economy Class is available on flights from Ottawa to Washington, D.C. Dulles Intl Airport.

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

    A direct flight from Ottawa to Washington, D.C. Dulles Intl Airport takes 2h, covering 1,164 km.

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

    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 Ottawa to Washington, D.C. Dulles Intl Airport flight?

    Round-trip flights from Ottawa to Washington, D.C. Dulles Intl Airport range from C$ 465 to C$ 677, with an average of C$ 566 over the past 12 months. Anything below C$ 465 counts as a good deal.

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

    On this route, layover flights are cheaper than direct options on average. Layover fares average C$ 478 round-trip via Toronto Island (YTZ), compared to C$ 617 for direct.

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

    There is no standard. Checked bag policies vary by airline on this route. Most carriers charge C$ 35–C$ 129 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 Ottawa to Washington, D.C. Dulles Intl Airport?

    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 Ottawa to Washington, D.C. Dulles Intl Airport spread across the day?

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

  • Have flight prices from Ottawa to Washington, D.C. Dulles Intl Airport 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$ 443 to C$ 2,026. That means the highest observed fare was about 5x higher than the lowest one.

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

    One-way fares from Ottawa to Washington, D.C. Dulles Intl Airport are currently lower than usual. Average one-way flight prices are about C$ 259, which is 38% below the typical average for this route.

  • What car rental options are available at Washington, D.C. Dulles Intl Airport (IAD)?

    Washington, D.C. Dulles Intl Airport (IAD) hosts 5 major car rental companies, with daily rates averaging C$ 97 for economy cars. Top options include:

    • Dollar
    • Hertz
    • Budget
    • Sixt
    • Thrifty

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

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

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

    Most connecting flights from Ottawa to Washington, D.C. Dulles Intl Airport pass through Toronto Island (YTZ), which handles 100% of one-stop traffic on this route.

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

    Yes. Flexible dates can save you up to 19% on flights from Ottawa to Washington, D.C. Dulles Intl Airport. Thursday is the cheapest departure day at C$ 501 round-trip on average, while Friday is the most expensive at C$ 611, a difference of C$ 110.

    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 Ottawa to Washington, D.C. Dulles Intl Airport?

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

  • Which popular places can I visit in Washington, D.C. Dulles Intl Airport?

    Some of the most popular sights in Washington, D.C. Dulles Intl Airport are Capital One Arena, National Mall, and Kennedy Center. These are among the most viewed places in Washington, D.C. Dulles Intl Airport on KAYAK.

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

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

    • Air Canada: offers extra legroom; offers free seat selection
    • United Airlines: offers extra legroom; 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 Ottawa to Washington, D.C. Dulles Intl Airport flights?

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

    • Air Canada: a carry-on bag and a checked bag in Economy Class
    • United Airlines: a carry-on bag and a checked bag in Economy 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 Ottawa to Washington, D.C. Dulles Intl Airport 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 Friday. On this route, Thursday flights average C$ 501, about C$ 110 less than Friday fares (18% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Ottawa to Washington, D.C. Dulles Intl Airport trip for December. Fares historically average C$ 494 round-trip in that month – typically C$ 187 less than the most expensive month, which is August (based on the last 12 months).
  • If you have the time, taking a 1-stop flight through Toronto Island Airport (YTZ) can be cheaper than flying direct. The cheapest layover option averages C$ 478 round-trip on this route – about C$ 139 less than direct flights (based on the last 12 months).

Prefer to fly direct from Ottawa to Washington Dulles Airport?

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

Direct departures

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

Direct returns

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

More options for your flight from Ottawa to Dulles Intl

Complete your trip to Washington, D.C. with a hotel stay or car rental

Car rentals in Washington, D.C.
Hotels in Washington, D.C.
Vacations in Washington, D.C.