WAS - YOW

$145 Find Cheap Flights from Washington, D.C. to Ottawa - Compare and Save

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Everything you should know

Cheapest round-trip
$301
Typical prices: $419-$614
Air Canada
Sat 10/13Sun 10/14
IAD - YOW • 1 stop
Cheapest non-stop
$347
Typical prices: $437-$657
Air Canada
Mon 10/1Thu 10/4
DCA - YOW • Non-stop
Nonstop flights
Every day
You can fly direct with United Airlines and Air Canada. Average duration is 1h 42m
Direct flights
+1
Direct flights
+1
Top routes
DCA - YOW
Cheapest • 4% average savings
IAD - YOW
Most popular
Insights
Insights
When to book
15 weeks
in advance
Our data shows that travelers who book at least 15 weeks in advance save around 60% compared to booking last minute.
Insights
Insights
When to travel
October
Cheapest • 15% price drop
June
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Orlando (MCO)
Cheapest • Avg $355 (round-trip)
Toronto Island (YTZ)
Shortest trip • 4h 13m (one-way)
Insights
Insights
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Expert advice
Flight Deals

Cheap Flights from Washington, D.C. to Ottawa (WAS-YOW)

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

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

Tue, Oct 13 - Wed, Oct 14
Air Canada Logo
3:45 pm - 10:10 pmIAD  Washington, D.C. Dulles Intl-YOW Ottawa
6h 25m1 stop Montreal Pierre Elliott Trudeau Intl
Air Canada Logo
9:55 am - 4:42 pmYOW  Ottawa-IAD Washington, D.C. Dulles Intl
6h 47m1 stop Toronto Island
$301Air Canada
Fri, Oct 16 - Sun, Oct 18
Porter Airlines Logo
11:25 am - 5:52 pmIAD  Washington, D.C. Dulles Intl-YOW Ottawa
6h 27m1 stop Toronto Island
Porter Airlines Logo
10:40 am - 3:10 pmYOW  Ottawa-IAD Washington, D.C. Dulles Intl
4h 30m1 stop Toronto Island
$320Porter Airlines
Wed, Oct 7 - Wed, Nov 4
Multiple Airlines Logo
6:13 pm - 12:20 amIAD  Washington, D.C. Dulles Intl-YOW Ottawa
30h 07m2 stops Fort Lauderdale Toronto Pearson Intl
Multiple Airlines Logo
7:05 am - 8:11 pmYOW  Ottawa-IAD Washington, D.C. Dulles Intl
13h 06m1 stop Fort Lauderdale
$323Multiple Airlines
Wed, Oct 7 - Wed, Nov 4
Multiple Airlines Logo
6:13 pm - 12:20 amIAD  Washington, D.C. Dulles Intl-YOW Ottawa
30h 07m2 stops Fort Lauderdale Toronto Pearson Intl
Multiple Airlines Logo
7:05 am - 8:11 pmYOW  Ottawa-IAD Washington, D.C. Dulles Intl
13h 06m1 stop Fort Lauderdale
$328Multiple Airlines
Thu, Oct 29 - Sun, Nov 1
Porter Airlines Logo
11:20 am - 4:09 pmIAD  Washington, D.C. Dulles Intl-YOW Ottawa
4h 49m1 stop Toronto Island
Porter Airlines Logo
12:15 pm - 5:43 pmYOW  Ottawa-IAD Washington, D.C. Dulles Intl
5h 28m1 stop Toronto Island
$331Porter Airlines
Mon, Oct 26 - Mon, Nov 2
Porter Airlines Logo
11:20 am - 4:09 pmIAD  Washington, D.C. Dulles Intl-YOW Ottawa
4h 49m1 stop Toronto Island
Porter Airlines Logo
12:15 pm - 5:43 pmYOW  Ottawa-IAD Washington, D.C. Dulles Intl
5h 28m1 stop Toronto Island
$331Porter Airlines
Thu, Oct 1 - Sun, Oct 4
Air Canada Logo
12:40 pm - 2:12 pmDCA  Washington, D.C. Reagan-National-YOW Ottawa
1h 32mnonstop
Air Canada Logo
10:35 am - 12:09 pmYOW  Ottawa-DCA Washington, D.C. Reagan-National
1h 34mnonstop
$347Air Canada
Thu, Oct 1 - Sun, Oct 4
Air Canada Logo
6:00 am - 11:30 amDCA  Washington, D.C. Reagan-National-YOW Ottawa
5h 30m1 stop Montreal Pierre Elliott Trudeau Intl
Air Canada Logo
10:35 am - 12:09 pmYOW  Ottawa-DCA Washington, D.C. Reagan-National
1h 34mnonstop
$353Air Canada
Wed, Dec 30 - Wed, Dec 30
United Airlines Logo
6:05 am - 1:11 pmIAD  Washington, D.C. Dulles Intl-YOW Ottawa
7h 06m1 stop Newark
United Airlines Logo
4:42 pm - 12:38 amYOW  Ottawa-IAD Washington, D.C. Dulles Intl
7h 56m1 stop Chicago O'Hare Intl
$481United Airlines
Thu, Dec 31 - Thu, Dec 31
United Airlines Logo
6:05 am - 1:11 pmIAD  Washington, D.C. Dulles Intl-YOW Ottawa
7h 06m1 stop Newark
United Airlines Logo
4:42 pm - 12:38 amYOW  Ottawa-IAD Washington, D.C. Dulles Intl
7h 56m1 stop Chicago O'Hare Intl
$481United Airlines
Booking Insights

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

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

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

Round-trip flights from Washington, D.C. to Ottawa start at $301. Prices are below average for this route right now, with typical round-trip fares ranging from $419 to $614. The lowest price found in the past 5 days was $301 on Air Canada.

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

There's little price difference between Washington, D.C. to Ottawa routes. They average around $490 round-trip, based on KAYAK data over the past 12 months.

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

Thursday is the cheapest day of the week to fly from Washington, D.C. to Ottawa, it is 6% cheaper than the average day. Monday is the most expensive day with flight prices 17% higher than average. Based on deals found by KAYAK users in the last 12 months.

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

  • October is the cheapest month to fly from Washington, D.C. to Ottawa at $421 round-trip.
  • February ($665) and September ($582) are the most expensive months.
  • The price difference between flying in the cheapest and most expensive months is 57% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are prices from Washington, D.C. to Ottawa the cheapest?

Flights from Washington, D.C. 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.

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Expert advice

Expert advice for your flight from Washington, D.C. 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 and United Airlines

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

Key details for Washington, D.C. to Ottawa flights

Low season

February

Cheapest flight

$145
Best time to beat the crowds but there is an average 34% increase in price.
Most popular time to fly with an average 10% increase in price.
Flight from Washington, D.C. Dulles Intl Airport to Ottawa

When to book flights from Washington, D.C. to Ottawa

Are your dates flexible? Find out the best times to travel from Washington, D.C. 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. to Ottawa flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • Is Ottawa International Airport (YOW) friendly to those with limited mobility?

    YOW is a highly disabled-friendly airport. If you have limited mobility, you can count on being able to move with ease, given that the airport features elevators, ramps, and wheelchairs are provided upon request. If you’re not being picked up, you can take advantage of the Para Transpo service, a door-to-door transportation service meant to cater to the disabled.

  • What are the popular layover destinations for flights to YOW from Washington, D.C.?

    If you board a one-stop flight to YOW from Washington, D.C., your stopover will be dependent on the airline you fly with. If you fly with Air Canada, your layover with be at Toronto Pearson (YYZ). On the other hand, if you fly with Porter Airlines, your layover will be at Toronto Island (YTZ).

  • What is the carry-on policy for Air Canada?

    When flying with Air Canada, you’re allowed to bring on one personal item as well as one carry-on. The carry-on bag you travel with has to fit in the luggage compartment above your seat and not exceed 9 x 15.5 x 21.5 inches. Your personal item has to fit beneath the seat in front of you.

  • Can I carry my child on my lap when flying to Ottawa International Airport (YOW) with Air Canada?

    You can travel with your child on your lap when traveling with Air Canada, so long as your child is below two years. If you have two such children with you, you must purchase the older one a seat next to you, given that one adult may carry only one child on their lap.

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

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

    • Air Canada: 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.

  • What airlines are available from Washington, D.C. to Ottawa?

    2 airlines operate flights between Washington, D.C. and Ottawa. The airlines offering nonstop flights on this route include:

    • United Airlines
    • Air Canada

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

    Flights from Washington, D.C. to Ottawa may depart from several airports in Washington, D.C. area, including Washington, D.C. Reagan-National (DCA) and Washington, D.C. Dulles Intl (IAD). Flights usually arrive at Ottawa (YOW).

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

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

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

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

  • What cabin classes can I book on flights from Washington, D.C. to Ottawa?

    Three cabin classes are available on flights from Washington, D.C. to Ottawa:

    • Economy Class
    • Business Class
    • First Class

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

    On this route, layover flights are cheaper than nonstop options on average. Layover fares average $355 round-trip via Orlando (MCO), compared to $516 for nonstop.

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

    There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $40–$100 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

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

    One-stop flights from Washington, D.C. to Ottawa most commonly connect through:

    • Toronto Island (YTZ) - 97% of one-stop connections
    • Newark (EWR) - 1% of one-stop connections
    • Orlando (MCO) - 1% of one-stop connections
    • Toronto Pearson Intl (YYZ) - 1% of one-stop connections

    Toronto Island (YTZ) handles the largest share of one-stop connections on this route.

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

    Yes. Being flexible with your travel dates can save you up to 20% on the Washington, D.C. to Ottawa route. Thursday is the cheapest departure day at $469 round-trip on average, while Monday is the most expensive at $582, a difference of $113. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

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

    Afternoon is the busiest departure period on Washington, D.C. to Ottawa flights, with 66% of flights leaving in that window. Evening departures account for 33%, morning flights for 1%, and night flights for 0%.

  • What popular places can I visit in Ottawa?

    Some of the most popular sights in Ottawa are Downtown Ottawa, Parliament Hill and Garden of the Provinces and Territories. These are among the most viewed places in Ottawa on KAYAK.

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

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

    • Earliest: departs at 8:15 am and lands at 9:57 am
    • Latest: departs at 10:10 pm and lands at 11:52 pm.

    The flight takes about 1h 42m.

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

    Last-minute fares on this route - booked within 2 weeks of departure - run 75% above the route average of $496. Book 15 weeks before departure for the lowest fares.

  • How long is a flight from Washington, D.C. to Ottawa?

    A nonstop flight from Washington, D.C. to Ottawa takes 1h 42m, covering 448 miles.

  • Do I need a passport to fly from Washington, D.C. 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.

  • Have flight prices from Washington, D.C. 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 $301 to $1,760. That means the highest observed fare was about 6x higher than the lowest one.

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

    One-way fares from Washington, D.C. to Ottawa are currently lower than usual. Average one-way flight prices are about $168, which is 37% below the typical average for this route.

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

    Flying via Toronto Island (YTZ) gives the shortest average 1-stop total travel time at 4h 13m, compared with 4h 20m via Newark (EWR) and 8h 27m via Toronto Pearson Intl (YYZ).

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

    Ottawa Airport (YOW) hosts 5 major car rental companies, with daily rates starting from around $13 for economy cars. Top options include:
    • Routes Car & Truck Rentals
    • Europcar
    • Alamo
    • Budget
    • Enterprise Rent-A-Car

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

    Round-trip flights from Washington, D.C. to Ottawa range from $419 to $614, with an average of $496 over the past 12 months. Anything below $419 counts as a good deal.

  • Which airlines offer Wi-Fi on Washington, D.C. to Ottawa flights?

    Air Canada is the only airline on the Washington, D.C. to Ottawa route offering in-flight Wi-Fi. Pricing depends on fare class.

Your guide to booking Washington, D.C. to Ottawa flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates can be flexible, aim for a Thursday departure instead of Monday. On this route, Thursday flights average $469 - about $113 less than Monday (19% 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. to Ottawa trip for October. Fares historically average $421 round-trip in that month - typically $244 less than the most expensive month, which is February (based on the last 12 months).
  • If you have the time, taking a 1-stop flight through Orlando Airport (MCO) can be cheaper than flying direct. The cheapest layover option averages $355 round-trip on this route - about $161 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
    - Fairfield Inn & Suites by Marriott Ottawa Airport
    - Hampton Inn by Hilton Ottawa Airport
  • When flying from Washington, D.C., you may depart from Dulles (IAD), Ronald Reagan (DCA), or Baltimore/Washington International Thurgood Marshall Airport (BWI). You should book a flight that departs from IAD if you’re on a budget, DCA if you want to board at the airport closest to the heart of the city, and BWI if you want to avoid lengthy queues at check-in and boarding.
  • Suppose you want to travel to IAD via public transit, head to the stop at D Street S.W. Between 6th and 7th Street S.W. 5A. Here. In that case, you can wait for the D.C. Metro Bus 5A, a bus service that offers transportation between the airport and downtown Washington D.C. Aboard one, you’ll take roughly 45 minutes to reach the airport.
  • Suppose you want to travel to Ottawa International Airport (YOW) with an eco-friendly partner. In that case, consider flying with Air Canada, given that it has been ranked as one of the most eco-friendly participants in the aviation industry for years. This airline features efficient waste management and recycling systems, partnerships with dependable environmental groups, and a fleet of modern, fuel-efficient aircraft.
  • You can bring liquids, pastes, and even aerosols onboard your flight to YOW, irrespective of the airline you fly. This is on condition that you store them in 3.4 oz containers, which in turn should be stored in a transparent, resealable plastic bag with a maximum volume of one liter.
  • At YOW, you can rent a vehicle with ease, given that it features counters for several agencies, notably Alamo, Avis, Budget, Enterprise, Hertz, National, and Thrifty. The counters are on Level 1 of the Parkade inside the main terminal building, a few minutes from the baggage claim.

Prefer to fly direct from Washington, D.C. to Ottawa?

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

Direct departures

Washington, D.C. to Ottawa

Monday

Air Canada,United Airlines

Air Canada,United Airlines

Tuesday

Air Canada,United Airlines

Air Canada,United Airlines

Wednesday

Air Canada,United Airlines

Air Canada,United Airlines

Thursday

Air Canada,United Airlines

Air Canada,United Airlines

Friday

Air Canada,United Airlines

Air Canada,United Airlines

Saturday

Air Canada,United Airlines

Air Canada,United Airlines

Sunday

Air Canada,United Airlines

Air Canada,United Airlines

See more direct flights

Direct returns

Ottawa to Washington, D.C.

Monday

Air Canada,United Airlines

Air Canada,United Airlines

Tuesday

Air Canada,United Airlines

Air Canada,United Airlines

Wednesday

Air Canada,United Airlines

Air Canada,United Airlines

Thursday

Air Canada,United Airlines

Air Canada,United Airlines

Friday

Air Canada,United Airlines

Air Canada,United Airlines

Saturday

Air Canada,United Airlines

Air Canada,United Airlines

Sunday

Air Canada,United Airlines

Air Canada,United Airlines

See more direct flights

More options for your flight from Washington, D.C. to Ottawa

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

Car rentals in Ottawa
Hotels in Ottawa
Vacations in Ottawa