YOW - WAS

$169 Find Cheap Flights from Ottawa to Washington, D.C. - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ottawa to Washington, D.C. departing on 8/28. 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

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Everything you should know

Cheapest round-trip
$313
Typical prices: $355-$413
Porter Airlines
Fri 10/2Sun 10/4
YOW - IAD • 1 stop
Cheapest non-stop
$315
Typical prices: $322-$394
Air Canada
Fri 9/4Sun 9/6
YOW - DCA • Non-stop
Top airlines
Cheapest • from $313 (round-trip)
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
You can fly direct with Air Canada and United Airlines. Average duration is 1h 41m
Direct flights
Direct flights
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+1
Direct flights
Direct flights
+1
Top routes
Cheapest • 10% average savings
Most popular
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $296 (round-trip)
Shortest trip • 4h 04m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 18% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
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Flight Deals
Booking Insights
Expert advice
Flight Deals

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

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

Fri, Oct 2 - Sun, Oct 4
Porter Airlines Logo
10:40 am - 3:10 pm
YOW
-
IAD
4h 30m
1 stop
Porter Airlines Logo
3:50 pm - 8:02 pm
IAD
-
YOW
4h 12m
1 stop
$313Porter Airlines
Fri, Oct 16 - Mon, Oct 19
Porter Airlines Logo
10:40 am - 3:10 pm
YOW
-
IAD
4h 30m
1 stop
Porter Airlines Logo
3:50 pm - 9:42 pm
IAD
-
YOW
5h 52m
1 stop
$313Porter Airlines
Thu, Aug 20 - Sun, Aug 23
Air Canada Logo
9:05 am - 3:38 pm
YOW
-
DCA
6h 33m
1 stop
Air Canada Logo
6:00 am - 9:39 am
DCA
-
YOW
3h 39m
1 stop
$314Air Canada
Fri, Sep 4 - Sat, Sep 5
Porter Airlines Logo
10:40 am - 3:10 pm
YOW
-
IAD
4h 30m
1 stop
Porter Airlines Logo
11:25 am - 7:07 pm
IAD
-
YOW
7h 42m
1 stop
$314Porter Airlines
Fri, Sep 4 - Sat, Sep 5
Air Canada Logo
10:40 am - 12:14 pm
YOW
-
DCA
1h 34mnonstop
Air Canada Logo
12:55 pm - 2:26 pm
DCA
-
YOW
1h 31mnonstop
$315Air Canada
Fri, Sep 4 - Sun, Sep 6
Air Canada Logo
10:40 am - 12:14 pm
YOW
-
DCA
1h 34mnonstop
Air Canada Logo
12:55 pm - 2:26 pm
DCA
-
YOW
1h 31mnonstop
$315Air Canada
Mon, Sep 21 - Sat, Sep 26
Porter Airlines Logo
10:40 am - 3:10 pm
YOW
-
IAD
4h 30m
1 stop
Porter Airlines Logo
11:25 am - 7:07 pm
IAD
-
YOW
7h 42m
1 stop
$315Porter Airlines
Fri, Sep 11 - Fri, Sep 18
United Airlines Logo
6:00 am - 7:43 am
YOW
-
IAD
1h 43mnonstop
United Airlines Logo
8:15 am - 9:56 am
IAD
-
YOW
1h 41mnonstop
$347United Airlines
Fri, Aug 21 - Wed, Aug 26
United Airlines Logo
7:30 pm - 9:14 pm
YOW
-
IAD
1h 44mnonstop
United Airlines Logo
8:15 am - 9:56 am
IAD
-
YOW
1h 41mnonstop
$347United Airlines
Wed, Sep 2 - Mon, Sep 7
United Airlines Logo
2:52 pm - 4:35 pm
YOW
-
IAD
1h 43mnonstop
United Airlines Logo
10:10 pm - 11:54 pm
IAD
-
YOW
1h 44mnonstop
$347United Airlines
Booking Insights

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

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

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

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

Flight prices are typical for this route right now.

Flights to Washington, D.C. from Ottawa usually cost between $287 and $425 in October.
The lowest price found in the past 5 days was $313 on Porter Airlines (Oct 2-Oct 4).

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

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

The absolute cheapest return flight from Ottawa to Washington, D.C. costs $255 on the route between Ottawa (YOW) and Washington, D.C. Dulles Intl Airport (IAD). However, over the past month, flights between Ottawa (YOW) and Washington, D.C. Reagan-National Airport (DCA) were, on average, 10% cheaper than other Ottawa-Washington, D.C. routes. The most popular route is between Ottawa (YOW) and Washington, D.C. Dulles Intl Airport (IAD).

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

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

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ottawa to Washington, D.C., 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 Ottawa to Washington, D.C. is January, where tickets cost $332 (return) on average. On the other hand, the most expensive months are May and September, where the average cost of round-trip tickets is $443 and $430 respectively.

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

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 $370, prices are generally cheapest when you fly direct.

Expert advice

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

 
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 season

February

Cheapest flight

$169
Best time to beat the crowds with an average 3% drop in price.
Most popular time to fly with an average 4% increase in price.
Flight from Ottawa to Washington Dulles Airport

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

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

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

    In the last 5 days, the lowest price for a flight from Ottawa to Washington, D.C. was $169 for a one-way ticket and $313 for a round-trip.

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

    Yes, you'll most likely have to show a valid passport before boarding the plane in Ottawa and on arrival in Washington, D.C..

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

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

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

    The Embraer 175 (Enhanced Winglets) is the aircraft model that flies most regularly on the Ottawa to Washington, D.C. flight route.

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

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

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

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

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

    The two airlines most popular with KAYAK users for flights from Ottawa to Washington, D.C. are United Airlines and Air Canada. With an average price for the route of $414 and an overall rating of 7.4, United Airlines is the most popular choice. Air Canada is also a great choice for the route, with an average price of $388 and an overall rating of 7.1.

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

    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 Ottawa to Washington, D.C..

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington, D.C. from Ottawa 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 Ottawa to Washington, D.C.?

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

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

    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 Washington, D.C. from Ottawa 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 Ottawa to Washington, D.C.

  • Looking for a cheap flight? 25% of our users found flights on this route for $249 or less one-way and $397 or less round-trip.

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

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Ottawa to Washington, D.C..
Find which airlines fly direct from Ottawa Airport to Washington, D.C., which days they fly and book direct flights.

Direct departures

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

Direct returns

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

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

 
See real verified KAYAK customer reviews for airlines flying from Ottawa to Washington, D.C.. 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 Ottawa to Washington, D.C.? 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.
7.4
United AirlinesOverall score based on 10055 reviews
7.1Entertainment
7.3Comfort
7.7Boarding
6.7Food
8.1Crew
Airline reviews

Crew were welcoming, accommodating and they worked hard to find places for all carry on.

10.0 ExcellentPatricia, Jun 2026
YOW - EWR
Read more United Airlines reviews

Crew were welcoming, accommodating and they worked hard to find places for all carry on.

very average service no complimentary alcoholics drinks unlike other airlines such as Porter airlines No decent seats available during check-in time the day before

It was great. There were some issues prior to takeoff. The weather was poor so we had to go through deicing, and we were delayed a bit by the pilots' concern about one of the engines, but that's aviation. The pilots handled everything with aplomb, and kept us apprised

l really enjoy very much the flight was very pleasant

I dread trans-Pacific flights. They are very long. This was my first time on Universal, and it was my best crossing ever. The staff were professional, the hospitality was great, and the food was delicious. The entertainment system filled the long flight hours. I will seek out Universal flights from now onwards. 🙂

My flight was delayed about 1 1/2 hours in Chicago, but other then that it was a good flight.

The flight was delayed, it took longer than anticipated because of weather, and they broke my luggage.

lots of delays the crew were unclear about where to pick up my carry-on, which they took from me to check in on the plane.

My connecting gate in .Chicago was across the aisle from my arriving gate. Otherwise I would not have made my connection. So that was very fortunate.

Brutal as can be … delayed by 24 hours then delayed and hour on the tarmac then delayed three hours in Chicago, screaming child behind me kicking the seat for the better part of 10 hours… couldn’t be worse

The flight was good. My luggage didn’t land with me when I arrived in Columbus. So grateful I was able to get my luggage back within the 2 hours😍👍.

Biggest problem for me is that I am Star Alliance Gold and they were not able to give me access to to Maple Lounge because of some computer glitch . It was management by information system. She could clearly see my status and still would not give me access because the computer woudl not let her. She should have override that be attentive to a customer and figure rhat out later

My flight got delayed 5 times and then got cancelled eventually, I had to get a hotel and uber and pay for food for an extra night without any plans. It was a horrible experience, instead of Air Canada, I was flying with United .

So we didn't actually go. We were hoping to go for the Inauguration of the first female president. When That Guy got elected, we bailed. Unfortunately, we got basically none of our money back, despite having travel insurance. Would not fly with Air Canada again unless I had to.

This was my first time flying on Air Canada and the experience was good and pleasant enough, great crew members and the price I paid was amazing,

Flight was delayed by 45 min. No problems. Everyone took it in stride.

The Flight Attendant was particularly helpful to my wife, who was having a bad day.

We had no idea that you had to check in with United so we were waiting at a closed Air Canada window for about an hour before we found out we had to us United.

Boarding staff provided up-to-date flight information. They were professional and courteous. The flight was on-time and comfortable (adequate leg room). Early landing and orderly exited the aircraft. Ground baggage handlers were quick to offload carry-on bags. GREAT EXPERIENCE WITH HK EXPRESS

It is air Canada so leaving 20 minutes late is very acceptable

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

Information on your arrival and departure airports