WAS - YOW

$162 Find Cheap Flights from Washington, D.C. to Ottawa

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Washington, D.C. to Ottawa departing on 5/15. 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 Ottawa

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Ottawa, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Ottawa, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$346
Typical prices: $514-$338
Porter Airlines
ו' 6/19ב' 6/22
IAD - YOW • 1 stop
Cheapest non-stop
$379
Typical prices: $465-$409
Air Canada
ש' 6/13א' 6/14
DCA - YOW • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
United's Economy Plus offers up to 6 inches more legroom.
Air Canada's Preferred Economy adds up to 4 extra inches.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Cheapest • from $346 (round-trip)
Best reviews • 8.0 score
Airline reviews
Airline reviews
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Airline reviews
Airline reviews
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Nonstop flights
You can fly direct with Air Canada and United Airlines. Average duration is 1h 42m
Direct flights
Direct flights
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Direct flights
Direct flights
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Top routes
Cheapest • 39% average savings
Most popular
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $358 (round-trip)
Shortest trip • 4h 04m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 27% price drop
Most popular
Good to know
Good to know
+1
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We hope you love your trip to Ottawa!
Flight Deals
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Expert advice
Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Washington, D.C. to Ottawa 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 from Washington, D.C. to Ottawa

ו', יוני 19 - ב', יוני 22
Porter Airlines Logo
4:00 pm - 8:04 pm
IAD
-
YOW
4h 04m
1 stop
Porter Airlines Logo
11:00 am - 3:16 pm
YOW
-
IAD
4h 16m
1 stop
$346Porter Airlines
א', יוני 7 - ו', יוני 12
Multiple Airlines Logo
5:30 pm - 3:00 pm
IAD
-
YOW
21h 30m
1 stop
Multiple Airlines Logo
11:00 am - 3:21 pm
YOW
-
IAD
4h 21m
1 stop
$347Multiple Airlines
ה', יולי 23 - א', יולי 26
Porter Airlines Logo
4:00 pm - 8:04 pm
IAD
-
YOW
4h 04m
1 stop
Porter Airlines Logo
11:00 am - 3:16 pm
YOW
-
IAD
4h 16m
1 stop
$348Porter Airlines
ו', יוני 12 - ו', יוני 19
Porter Airlines Logo
4:05 pm - 8:04 pm
IAD
-
YOW
3h 59m
1 stop
Porter Airlines Logo
11:00 am - 3:16 pm
YOW
-
IAD
4h 16m
1 stop
$349Porter Airlines
א', יוני 14 - ד', יוני 24
Porter Airlines Logo
11:30 am - 5:54 pm
IAD
-
YOW
6h 24m
1 stop
Porter Airlines Logo
11:00 am - 3:16 pm
YOW
-
IAD
4h 16m
1 stop
$350Porter Airlines
א', יוני 7 - ו', יוני 12
Multiple Airlines Logo
8:47 pm - 3:00 pm
IAD
-
YOW
18h 13m
2 stops
Multiple Airlines Logo
11:00 am - 3:21 pm
YOW
-
IAD
4h 21m
1 stop
$352Multiple Airlines
ש', יוני 13 - א', יוני 14
Air Canada Logo
12:45 pm - 2:17 pm
DCA
-
YOW
1h 32mnonstop
Air Canada Logo
10:25 am - 12:01 pm
YOW
-
DCA
1h 36mnonstop
$379Air Canada
ו', יוני 12 - ו', יוני 19
Air Canada Logo
12:45 pm - 2:17 pm
DCA
-
YOW
1h 32mnonstop
Air Canada Logo
10:25 am - 12:00 pm
YOW
-
DCA
1h 35mnonstop
$386Air Canada
ו', יוני 12 - ו', יוני 19
Air Canada Logo
12:45 pm - 2:17 pm
DCA
-
YOW
1h 32mnonstop
Air Canada Logo
9:10 am - 3:38 pm
YOW
-
DCA
6h 28m
1 stop
$391Air Canada
ו', יוני 12 - ו', יוני 19
Air Canada Logo
6:00 am - 10:35 am
DCA
-
YOW
4h 35m
1 stop
Air Canada Logo
6:00 am - 10:18 am
YOW
-
DCA
4h 18m
1 stop
$392Air Canada
Booking Insights

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

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

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

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Washington, D.C. to Ottawa departing in June.

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

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest return flight from Washington, D.C. to Ottawa costs $166 on the route between Washington, D.C. Reagan-National Airport (DCA) and Ottawa (YOW). Over the past month, this route was, on average, 39% cheaper than other Washington, D.C.-Ottawa routes. It is also the most popular route.

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

The average price of all round-trip flights from Washington, D.C. to Ottawa clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to Ottawa on a Saturday, as we generally find the cheapest rates on that day for this route. On the other hand, Thursday is the most expensive day to fly from Washington, D.C. to Ottawa. For your return ticket, we recommend flying on a Friday and avoiding Sundays for the best deals.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. to Ottawa, 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 from Washington, D.C. to Ottawa is June, where tickets cost $135 (return) on average. On the other hand, the most expensive months are February and January, where the average cost of round-trip tickets is $338 and $306 respectively.

Can I save money by flying with a layover from Washington, D.C. to Ottawa?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $493, prices are generally cheapest when you fly direct.

Expert advice

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

 
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.
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.

Good to know

Low seasonFebruary
Cheapest flight$162
Best time to beat the crowds but there is an average 9% increase in price.
Most popular time to fly and prices are also 19% lower on average.
Flight from Washington Dulles 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
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. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Washington, D.C. to Ottawa

  • 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.

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

    In the last 3 days, the lowest price for a flight from Washington, D.C. to Ottawa was $140 for a one-way ticket and $346 for a round-trip.

  • Do I need a passport to fly between Washington, D.C. and Ottawa?

    Yes

  • Which airports will I be using when flying from Washington, D.C. to Ottawa?

    Washington, D.C. is served by 2 major airports and there is only 1 main airport in Ottawa. You will leave Washington, D.C. from one of these airports: Washington, D.C. Reagan-National or Washington, D.C. Dulles Intl. You will be arriving at Ottawa.

  • Which airlines offer Wi-Fi service onboard planes from Washington, D.C. to Ottawa?

    Porter Airlines, American Airlines, Air Canada, and JetBlue offer inflight Wi-Fi service on the Washington, D.C. to Ottawa flight route.

  • Which aircraft models fly most regularly from Washington, D.C. to Ottawa?

    The Canadair (Bombardier) Regional Jet CRJ-550 is the aircraft model that flies most regularly on the Washington, D.C. to Ottawa flight route.

  • Which airline alliances offer flights from Washington, D.C. to Ottawa?

    Star Alliance is the only airline alliance operating flights between Washington, D.C. and Ottawa.

  • On which days can I fly direct from Washington, D.C. to Ottawa?

    There are nonstop flights from Washington, D.C. to Ottawa on a daily basis.

  • Which is the best airline for flights from Washington, D.C. to Ottawa, Porter Airlines or United Airlines?

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Ottawa are Porter Airlines and United Airlines. With an average price for the route of $339 and an overall rating of 8.0, Porter Airlines is the most popular choice. United Airlines is also a great choice for the route, with an average price of $477 and an overall rating of 7.4.

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

    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 from Washington, D.C. to Ottawa.

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

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

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

    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 Ottawa with an airline and back to Washington, D.C. with another airline.

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

    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 Ottawa from Washington, D.C. up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Washington, D.C. to Ottawa

  • Looking for a cheap flight? 25% of our users found flights on this route for $233 or less one-way and $346 or less round-trip.
  • 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?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying 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

Reviews of the top 3 airlines serving from Washington, D.C. to Ottawa

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Ottawa. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Washington, D.C. to Ottawa? 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 435 reviews
7.0Entertainment
7.6Food
8.0Comfort
8.2Boarding
8.6Crew
Airline reviews

A few improvements: 1. No signages at the airport that the porter airline was a codeshare and i could check-in at American counter. 2. Crew at the gate said they couldn't change my reward to Alaska - despite that being done previously 3. Despite there being many open seats, i was assigned a seat at the very back near lavatory, last row. Fortunately, the pilot wanted more people moved up so the flight attendants moved me up. It seemed very odd to have been stuck in last row with very few people nearby..

6.0 GoodHarsh, Apr 2026
JFK - YYZ
Read more Porter Airlines reviews

A few improvements: 1. No signages at the airport that the porter airline was a codeshare and i could check-in at American counter. 2. Crew at the gate said they couldn't change my reward to Alaska - despite that being done previously 3. Despite there being many open seats, i was assigned a seat at the very back near lavatory, last row. Fortunately, the pilot wanted more people moved up so the flight attendants moved me up. It seemed very odd to have been stuck in last row with very few people nearby..

I didn’t receive any help when they messed up and wasn’t honest and the supervisor did absolutely nothing to help me so I had to buy another ticket at $537

There was No Flight. Both Kayak and Porter refused to honor my booking. I was asked for an additional 1,300 $ CAD to keep the flight. After several emails to both Kayak and Porter I was ignored. I had to cancel my March spring break plans, dog kennel and hotel. I had to re-book another vacation to Nassau in January w Expedia. I had to re-book a new vacation for spring break. Porter and Kayak both blamed each other and would not work together to fix this. Not cool.

Even tho the flight was a bit delayed the team was apologetic. Everyone was friendly and efficient.

The flight was a little delayed but check in was easy and boarding was quick. Luggage was quickly available and everything worked great.

The Flight took off 2hrs late because there was no pilot showing up when the flight was ready to board.. Though the cabin crew was present and had prepared the plane, the FO turned around after 15 min and went away. A crew to fly the plane finally arrived over an hour later and we were able to board 1h30 min later than planned time... until everything was loaded, we left 2h late from the gate. This was a small plane, so don't expect any Entertainment... Wi-Fi access on board would work, but took an awful amount of time to figure out and get it work (I'm an IT person). Flying as VIPorter customer, I was expecting at least some warm meal, but everything served was just cold.. except the coffee maybe. Even in so-called VIPorter seats, space is cramped and trays are so tiny, you can barely setup your food. Flight caught up during the coast-to-coast crossing and was able to recoup about 45 min from the delay.. still arrived very late in Vancouver and had to wait a long time to get our registered bags. Let's see how the return flight will be in a few days..

The flight booking code given by Kayak was not the correct one used by the airline. I had to call to get the correct one. It was never sent to me. Totally unacceptable!

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.

Much roomer than air Canada! Great flight for the price. No complaints

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

Vegetarian selection could be better. Bread was too hard to chew.

Crew was friendly and competent. Food, wine, and entertainment were excellent except the raw tuna on the flight to Split. Recommend against serving that - at least as the only option. Many medical conditions do not allow people to eat raw fish.

After arriving in Chicago, we were taxiing for 1.5 hours with infrequent and untruthful updates about the amount of time it would take to arrive at the gate. Minimally, the team could have provided timing expectations that were more truthful, especially one their original expectations were not met.

United didn’t even try to hold the flight for me. They knew I had a tight connection and when I arrived at the gate less than 10 mins after final boarding the flight had already gone. The gate agent wasn’t even notified that I was on my way. She was told I wasn’t at the airport

Good quick flight on a small but comfortable plane. I'm 6'3 and had plenty of space.

The flight was delayed so we were dead tired, and after that the turbulence was horrible. I was very scared.

Wonderful. Quick boarding. Early departure and we arrived 30 minutes early at our destination. Unfortunately, when you arrive early, there is still a departing aircraft at our gate. We had to park for 30 minutes until the gate was clear. So our early arrival was not really early at the gate. Otherwise it was a quick and smooth flight. Appreciated the efficiency.

Wifi took a while to kick in and we had a maintenance issue that took over 40 mins at the gate in Washington before pulling back

Very good. Because of the delays with my previous flight, I missed my connection, but I was able to book another flight through the United app easily.

Was happy we finally got upgraded in 1st class. The seat getting old. The cushiness need some improvement.

Very tight seats - no legroom at all, very tight to the person in front of you. If you have basic fare, you are loading zone 6 regardless of where you are sitting in the plane - meaning even as a middle aisle person at the front of the plane, I had to get people to get up and let me in as they had boarded earlier. Having to pay for a carry on is criminal. I am a frequent flyer, and air Canada has now joined the list of other terrible North American Airlines.

Flight home was delayed multiple times, did not get home until 2am

Delayed by 5+ hours and they give a voucher for only $20 CAD which isn’t even redeemable at any place with edible food. Then took almost an hour to clean craft after it landed. And nonsensical boarding delayed even further. We didn’t leave until 1:30am….

I checked a bag and there was only one agent to assist all customers with any issues.

I travelled in Business class for the first time and wish I could do that again.

Super experience. Earlier than schedule departure and arrival. Baggage handling was very good

Plane left an hour late, I missed my connection and my bow case was never even loaded on the plane in VA. I deal with this type of nonsense everytime I fly air canada.

Check in agent was very helpful and polite. He helped me board the earlier flight back home instead of waiting 2 hours at the airport for the next flight

Our flight was canceled at the last minute. Someone on the flight said the exact same thing happened to her the day before. I will say they helped us book a flight on another airline so that we could still make our vacation with little delay.

the seats aren't the most comfy -- too little padding and I could feel whatever the passenger behind me was doing. Otherwise, it's all good.

Everything you need to know for your flight from Washington, D.C. to Ottawa

Information on your arrival and departure airports