WAS - YOW

$154 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 7/12. 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
$333
Typical prices: $988-$335
Porter Airlines
Fri 11/27Mon 11/30
IAD - YOW • 1 stop
Cheapest non-stop
$357
Typical prices: $567-$414
Air Canada
Thu 7/9Sun 7/12
DCA - YOW • Non-stop
Top airlines
Cheapest • from $333 (round-trip)
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
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Airline reviews
Airline reviews
+1
Nonstop flights
You can fly direct with Air Canada and United Airlines. Average duration is 1h 40m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Top routes
Cheapest • 19% average savings
Most popular
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $363 (round-trip)
Shortest trip • 3h 54m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 30% price drop
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

Fri, Nov 27 - Mon, Nov 30
Porter Airlines Logo
11:40 am - 5:29 pm
IAD
-
YOW
5h 49m
1 stop
Porter Airlines Logo
11:00 am - 5:14 pm
YOW
-
IAD
6h 14m
1 stop
$333Porter Airlines
Tue, Jul 21 - Thu, Jul 23
Air Canada Logo
5:15 pm - 9:52 pm
IAD
-
YOW
4h 37m
1 stop
Air Canada Logo
12:15 pm - 4:38 pm
YOW
-
IAD
4h 23m
1 stop
$334Air Canada
Wed, Jul 8 - Fri, Jul 10
Porter Airlines Logo
3:55 pm - 8:04 pm
IAD
-
YOW
4h 09m
1 stop
Porter Airlines Logo
10:40 am - 3:11 pm
YOW
-
IAD
4h 31m
1 stop
$335Porter Airlines
Wed, Jul 8 - Sat, Jul 11
Porter Airlines Logo
3:55 pm - 8:04 pm
IAD
-
YOW
4h 09m
1 stop
Porter Airlines Logo
10:40 am - 3:11 pm
YOW
-
IAD
4h 31m
1 stop
$336Porter Airlines
Wed, Jul 8 - Tue, Jul 14
Porter Airlines Logo
3:55 pm - 8:04 pm
IAD
-
YOW
4h 09m
1 stop
Porter Airlines Logo
10:40 am - 3:11 pm
YOW
-
IAD
4h 31m
1 stop
$340Porter Airlines
Thu, Jul 9 - Wed, Jul 15
Porter Airlines Logo
3:55 pm - 8:04 pm
IAD
-
YOW
4h 09m
1 stop
Porter Airlines Logo
10:40 am - 3:11 pm
YOW
-
IAD
4h 31m
1 stop
$342Porter Airlines
Sun, Jun 28 - Tue, Jun 30
Porter Airlines Logo
4:00 pm - 9:44 pm
IAD
-
YOW
5h 44m
1 stop
Porter Airlines Logo
11:00 am - 3:16 pm
YOW
-
IAD
4h 16m
1 stop
$344Porter Airlines
Thu, Oct 15 - Thu, Oct 15
Air Canada Logo
12:40 pm - 2:10 pm
DCA
-
YOW
1h 30mnonstop
Air Canada Logo
5:50 pm - 9:50 pm
YOW
-
DCA
4h 00m
1 stop
$353Air Canada
Thu, Jul 9 - Sun, Jul 12
Air Canada Logo
12:40 pm - 2:11 pm
DCA
-
YOW
1h 31mnonstop
Air Canada Logo
10:25 am - 12:00 pm
YOW
-
DCA
1h 35mnonstop
$357Air Canada
Sun, Jul 19 - Mon, Aug 3
Multiple Airlines Logo
1:05 pm - 2:57 pm
BWI
-
YOW
25h 52m
1 stop
Multiple Airlines Logo
7:00 am - 12:10 pm
YOW
-
BWI
29h 10m
1 stop
$404Multiple Airlines
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 November.

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 $144 on the route between Washington, D.C. Dulles Intl Airport (IAD) and Ottawa (YOW). Over the past month, flights between Washington, D.C. Reagan-National Airport (DCA) and Ottawa (YOW) were, on average, 19% cheaper than other Washington, D.C.-Ottawa routes. This 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 Tuesday, 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 December, where tickets cost $140 (return) on average. On the other hand, the most expensive months are February and April, where the average cost of round-trip tickets is $338 and $309 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 $549, 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$154
Best time to beat the crowds but there is an average 6% increase in price.
Most popular time to fly and prices are also 7% lower on average.
Flight from Reagan Washington National 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 5 days, the lowest price for a flight from Washington, D.C. to Ottawa was $154 for a one-way ticket and $333 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?

    Air Canada, United Airlines, JetBlue, Lufthansa, and Porter 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 Embraer 175 (Enhanced Winglets) 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 $351 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 $498 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 $281 or less one-way and $351 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 438 reviews
8.2Boarding
7.6Food
8.0Comfort
8.6Crew
6.9Entertainment
Airline reviews

The staff was amazing. Best service I’ve had on an aircraft in a long time. Was not particularly happy with the food. Flight was at 10:50 and left home too early for breakfast and wasn’t able to purchase food at airport and felt for sure I could get some breakfast to buy on airplane. Nope as food was served around 11:30 and only one choice left (I was at 22C) so ordered the chicken dish thinking I’m getting a hot meal but cold chicken with rice and carrots etc. I was looking forward to a croissant sandwich and a hot cup of tea. The FA was kind to explain they were serving dinner at that time. She was lovely Other than the disappointment with the food the staff was amazing. On my return flight I will make sure to eat and take some food with me so I’m not hungry or disappointed. This was my second time ever flying Porter and will consider checking them when I next come to visit my daughter. Have to say it again best crew I’ve ever experienced on a flight and I travel quite a bit. Thanks.

10.0 ExcellentAngela, May 2026
YYZ - YVR
Read more Porter Airlines reviews

The staff was amazing. Best service I’ve had on an aircraft in a long time. Was not particularly happy with the food. Flight was at 10:50 and left home too early for breakfast and wasn’t able to purchase food at airport and felt for sure I could get some breakfast to buy on airplane. Nope as food was served around 11:30 and only one choice left (I was at 22C) so ordered the chicken dish thinking I’m getting a hot meal but cold chicken with rice and carrots etc. I was looking forward to a croissant sandwich and a hot cup of tea. The FA was kind to explain they were serving dinner at that time. She was lovely Other than the disappointment with the food the staff was amazing. On my return flight I will make sure to eat and take some food with me so I’m not hungry or disappointed. This was my second time ever flying Porter and will consider checking them when I next come to visit my daughter. Have to say it again best crew I’ve ever experienced on a flight and I travel quite a bit. Thanks.

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

Our flight was canceled same day and we were never informed. Had to pay more and worse seating on another airline.

Did not like that we couldn't complete check in on-line without providing pictures of our passports. Worry about identity theft. We had no delays and boarding was handled In an efficient manner.

Excellent! I got to Munich and was transferred to my Lufthansa flight quickly, in 15 to 20 minutes, so I did not miss my flight. However, I had checked my overhead bag at the boarding gate in Tampa. That got to Tunis the next day. That is to be expected.

WiFi didn’t exist , seats were super cramped, lights stayed on near my seat for a long time while others were dimmed, the food/trash/drink cart hit my shoulder at least a couple of times while moving, food options were down to just one option by the time it got to my row, the utensils were garbage (knife bent at a couple of places by the time I was done eating) the spoon was very flimsy plastic

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.

I liked the fact that we arrived on time. What I did not like, I paid for a seat. Unfortunately a very large women sat beside me (required a belt extension). Her body spilled to my side. Not her fault but I had to lean to the left because her body was literally on my side of the seat. This caused a back ache. I was unable to sit straight the entire flight. There should be some form allowance (wider seat) for morbidly obese passengers. These seats are not designed for extremely obese people. I feel compassionate towards these obese passengers but I got off the plane with a substantial lower back ache. I myself have a degenerative disk disease and this did not help me

It was a short flight so, everything went smoothly and we got to where we needed to be safely.

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

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

Information on your arrival and departure airports