WAS - YOW

$115 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 3/25. 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
$265
Multiple Airlines
Wed 3/11Wed 3/18
BWI - YOW • 1 stop
Cheapest non-stop
$301
Typical prices: $150-$174
Air Canada
Fri 3/13Fri 3/20
DCA - YOW • Non-stop
Our travelers' advice
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
Porter Airlines
Cheapest • from $293 (round-trip)
Porter Airlines
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Top routes
DCA
-
YOW
Cheapest • 27% average savings
DCA
-
YOW
Most popular
Insights
Insights
Insights
Insights
When to travel
January
Cheapest • 56% price drop
July
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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Flight Deals
Booking Insights
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

Wed, Mar 11 - Wed, Mar 18
Multiple Airlines Logo
12:30 pm - 12:25 am
BWI
-
YOW
11h 55m
1 stop
Multiple Airlines Logo
4:15 pm - 8:41 am
YOW
-
BWI
16h 26m
1 stop
$265Multiple Airlines
Wed, Mar 11 - Wed, Mar 18
Porter Airlines Logo
11:40 am - 5:29 pm
IAD
-
YOW
5h 49m
1 stop
Porter Airlines Logo
6:45 am - 10:24 am
YOW
-
IAD
3h 39m
1 stop
$293Porter Airlines
Wed, Mar 11 - Wed, Mar 18
Porter Airlines Logo
11:40 am - 3:04 pm
IAD
-
YOW
3h 24m
1 stop
Porter Airlines Logo
6:45 am - 10:24 am
YOW
-
IAD
3h 39m
1 stop
$295Porter Airlines
Mon, Feb 23 - Mon, Mar 2
Multiple Airlines Logo
11:40 am - 6:09 pm
IAD
-
YOW
6h 29m
1 stop
Multiple Airlines Logo
9:15 am - 3:46 pm
YOW
-
IAD
6h 31m
1 stop
$296Multiple Airlines
Wed, Mar 11 - Wed, Mar 18
Multiple Airlines Logo
3:19 pm - 12:25 am
BWI
-
YOW
33h 06m
2 stops
Multiple Airlines Logo
4:15 pm - 8:41 am
YOW
-
BWI
16h 26m
1 stop
$296Multiple Airlines
Mon, Feb 23 - Mon, Mar 2
Air Canada Logo
12:55 pm - 2:30 pm
DCA
-
YOW
1h 35mnonstop
Air Canada Logo
10:30 am - 12:19 pm
YOW
-
DCA
1h 49mnonstop
$302Air Canada
Mon, Feb 23 - Mon, Mar 2
Air Canada Logo
12:55 pm - 2:30 pm
DCA
-
YOW
1h 35mnonstop
Air Canada Logo
5:45 am - 10:21 am
YOW
-
DCA
4h 36m
1 stop
$307Air Canada
Mon, Apr 13 - Sun, Apr 19
Multiple Airlines Logo
8:30 pm - 5:13 pm
IAD
-
YOW
20h 43m
1 stop
Multiple Airlines Logo
5:40 am - 5:14 pm
YOW
-
IAD
11h 34m
1 stop
$307Multiple Airlines
Mon, Feb 23 - Mon, Mar 2
Air Canada Logo
6:00 am - 9:41 am
DCA
-
YOW
3h 41m
1 stop
Air Canada Logo
4:00 pm - 9:56 pm
YOW
-
DCA
5h 56m
1 stop
$312Air Canada
Tue, Feb 24 - Fri, Feb 27
Air Canada Logo
12:55 pm - 2:30 pm
DCA
-
YOW
1h 35mnonstop
Air Canada Logo
10:30 am - 12:19 pm
YOW
-
DCA
1h 49mnonstop
$349Air 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.

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 absolute cheapest return flight from Washington, D.C. to Ottawa costs $180 on the route between Washington, D.C. Reagan-National Airport (DCA) and Ottawa (YOW). However, over the past month, flights between Washington, D.C. Dulles Intl Airport (IAD) and Ottawa (YOW) were, on average, 27% cheaper than other Washington, D.C.-Ottawa routes. The most popular route is between Washington, D.C. Reagan-National Airport (DCA) and Ottawa (YOW).

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 Wednesday, 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 January, where tickets cost $178 (return) on average. On the other hand, the most expensive months are December and March, where the average cost of round-trip tickets is $604 and $477 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 $486, 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 seasonNovember
Cheapest flight$115
Best time to beat the crowds but there is an average 12% increase in price.
Most popular time to fly and prices are also 8% lower on average.
Flight from Baltimore 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 $115 for a one-way ticket and $265 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, Air Canada, and American Airlines 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 $333 and an overall rating of 7.9, Porter Airlines is the most popular choice. United Airlines is also a great choice for the route, with an average price of $446 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 $250 or less one-way and $360 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

United Airlines

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

United Airlines

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.
7.9
Porter AirlinesOverall score based on 412 reviews
6.9Entertainment
7.9Comfort
7.5Food
8.2Boarding
8.6Crew
Airline reviews

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..

6.0 GoodBeat, Jan 2026
YUL - YVR
Read more Porter Airlines reviews

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

As a first time flyer with Porter I was happy with the service and comfort of the airline.

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

Other than wifi no on board entertainment. Will use them again, roomier seats than other airlines and snacks and beverages, better than average

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.

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.

Ineffective communication with United resulted in lost baggage. Their Baggage Tracing counter at MUC was shut down from 11:00-14:15 on my arrival. Undertrained, underinformed staff had me Running all over MUC to find someone to help me to no avail. Staff was rude, unhelpful, and unable to effectively use the systems they did have operational. They refused to contact United in any way or provide any accommodation or other resources while I waited for my luggage. This has destroyed my downstream itinerary. If they had even the slightest visibility I may have been able to reschedule/plan, but again, their staff provided nothing, and did nothing more than their website, which doesn’t even work on a standard phone browser. Miserable failure at all levels that weren’t associated with the operation of the aircraft.

Sat next to a one year old. She crawled all over the place and made me laugh.

The Crew and the food was the worst I ever had in Business Class. First they told us there were no space for carry on. It was plenty of space over our 2 row seats, we had to ask to let us travel with it which was accepted. They were aware that we had to run for the connection due to the previous flight delay. Have us one hour waiting for more customers and not even offer a glass of water. Then started the service and they started to serve other passengers drinks in business and did not offer any drinks until they serve our pre ordered meal and I ask for something to drink. I had to wait until they finished to serve all passengers until Inget something. The crew was the worts I ever had for Business Class in my life.

Not great experience - we were super late boarding due to issues with aircraft. Then when we finally all got onboard and seated and they started taxiing out to the runway they just stopped then turned around and went back to the airport. Apparently the crew “ran out of time” to legally fly us. They mentioned that they were about 2 minutes away from taking off. I understand the rules and safety but kinda wonder why they would have bothered boarding us in the first place? Had to go all the way back and de plane and then wait in a HUGE line to get a hotel (this is somewhere around 2:30am) finally got to hotel by Uber (no shuttle after 20min so gave up) and they ended up putting us all back on the same aircraft at 10am next morning so got about 2.5 hours sleep. They did give us. $250 credit, but it was a São Paulo Brazil flight out of Dulles. The flight and everything was fine.

Very nice flight love the small aircraft. We had a wonderful flight attendant. Nice to see someone that really enjoys her job. Don't have her name but had a southern accent.

Seats in waiting area and on plane hard as rock. Fast internet on the flight was great! Crew was kind.

Starlink wifi on the Embraer E175 is an excellent experience. I was able to connect and work from IAD all the way to approach into BTV.

7 hours delayed due to operational issues on United’s end. Basically laziness.

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.

This flight didn't happen for me because of overbooking.

Everything was simple and easy. The lady at the gate was super friendly, I wish I had her name to share. She's a little older, dark-haired. You can tell she likes her job and would be a great influence on any young people training with her.

During the pre-departure safety briefing, the flight attendants rushed through the mandatory safety announcements in both official languages, making it difficult for passengers to clearly understand the instructions. Given the importance of these messages for passenger safety, this lack of clarity was concerning. Perhaps use a recoded message to alleviate this concern. Additionally, the flight attendants appeared to lack the professional attentiveness typically expected during a flight. Rather than focusing on timely and courteous service, they seemed more engaged in personal conversations than in addressing the needs of passengers. I hope this feedback is taken constructively and helps in maintaining the high standards of professionalism and care that travelers expect from a national carrier: AC.

Service is pretty good. Sandwiches have to be purchased but I’ve bought my own food. Seat was comfortable and various movies to chose from.

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

Information on your arrival and departure airports