$148 Find Cheap Flights from Ottawa to District of Columbia

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 District of Columbia departing on 12/12. 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 District of Columbia

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ottawa to District of Columbia, 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 Ottawa to District of Columbia, as well as popular online travel agencies
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Flight Deals

Book Cheap Ottawa to District of Columbia Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ottawa to District of Columbia 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 District of Columbia

Wed, Nov 19 - Thu, Nov 20
United Airlines Logo
7:30 pm - 9:22 pmYOW-IAD
1h 52mnonstop
United Airlines Logo
8:45 am - 1:32 pmIAD-YOW
4h 47m1 stop
$288United Airlines
Find Deal
Mon, Jan 26 - Fri, Feb 6
Air Canada Logo
10:30 am - 12:19 pmYOW-DCA
1h 49mnonstop
Air Canada Logo
12:55 pm - 2:30 pmDCA-YOW
1h 35mnonstop
$289Air Canada
Find Deal
Mon, Dec 22 - Sun, Dec 28
Porter Airlines Logo
12:10 pm - 5:14 pmYOW-IAD
5h 04m1 stop
Porter Airlines Logo
11:40 am - 3:04 pmIAD-YOW
3h 24m1 stop
$291Porter Airlines
Find Deal
Thu, Nov 13 - Sun, Nov 16
Porter Airlines Logo
12:10 pm - 5:14 pmYOW-IAD
5h 04m1 stop
Porter Airlines Logo
6:30 pm - 10:29 pmIAD-YOW
3h 59m1 stop
$293Porter Airlines
Find Deal
Mon, Jan 26 - Fri, Feb 6
Air Canada Logo
10:30 am - 12:19 pmYOW-DCA
1h 49mnonstop
Air Canada Logo
6:00 am - 9:42 amDCA-YOW
3h 42m1 stop
$294Air Canada
Find Deal
Fri, Nov 14 - Mon, Nov 17
Porter Airlines Logo
12:10 pm - 5:14 pmYOW-IAD
5h 04m1 stop
Porter Airlines Logo
6:30 pm - 10:29 pmIAD-YOW
3h 59m1 stop
$299Porter Airlines
Find Deal
Mon, Jan 26 - Fri, Feb 6
Air Canada Logo
5:45 am - 10:26 amYOW-DCA
4h 41m1 stop
Air Canada Logo
4:10 pm - 10:18 pmDCA-YOW
6h 08m1 stop
$299Air Canada
Find Deal
Wed, Apr 22 - Thu, Apr 23
United Airlines Logo
7:25 pm - 9:00 pmYOW-IAD
1h 35mnonstop
United Airlines Logo
6:00 am - 12:41 pmIAD-YOW
6h 41m1 stop
$348United Airlines
Find Deal
Thu, Jan 15 - Mon, Jan 19
American Airlines Logo
6:45 am - 11:34 pmYOW-DCA
16h 49m2 stops
American Airlines Logo
10:12 am - 4:51 pmDCA-YOW
6h 39m1 stop
$445American Airlines
Find Deal
Mon, Jan 26 - Thu, Feb 5
American Airlines Logo
6:45 am - 5:47 pmYOW-DCA
11h 02m2 stops
American Airlines Logo
10:12 am - 4:51 pmDCA-YOW
6h 39m1 stop
$447American Airlines
Find Deal
Booking Insights

KAYAK's insights & trends for Ottawa to District of Columbia flights

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

What is the cheapest Ottawa to District of Columbia flight route?

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

The cheapest ticket to District of Columbia from Ottawa found in the last 72 hours was to Washington, D.C., at $316 round-trip. The most popular route is from Ottawa (YOW) to Washington, D.C. Dulles Intl Airport (IAD), and the cheapest round-trip airline ticket found on this route in the last 72 hours was $316.

Can I save money by flying with a layover from Ottawa to District of Columbia?

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.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $432 on average.

What is the cheapest month to fly from Ottawa to District of Columbia?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ottawa to District of Columbia, 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 District of Columbia is March, when tickets cost $293 (return) on average. On the other hand, the most expensive months are October and September, when the average cost of round-trip tickets is $539 and $415 respectively.

What’s the cheapest day of the week to fly from Ottawa to District of Columbia?

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

When flying from Ottawa to District of Columbia, you should consider leaving on a Saturday and avoid Mondays if you are looking for the best rates. For your return to Ottawa, you’ll find the best rates on Saturdays and the most expensive ones on Thursdays.

How far in advance should I book a flight from Ottawa to District of Columbia?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Ottawa to District of Columbia, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Ottawa to District of Columbia, you should book around 4 weeks before departure, which saves you about 45% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 9 weeks before departure.

Good to know

Low seasonSeptember
Cheapest flight$150
Best time to beat the crowds but there is an average 15% increase in price.
Most popular time to fly and prices are also 4% lower on average.
Flight from Ottawa to Washington Dulles Airport

FAQs - booking District of Columbia flights

  • How does KAYAK find such low prices on flights from Ottawa to District of Columbia?

    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 District of Columbia.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ottawa to District of Columbia?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Ottawa to District of Columbia 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 District of Columbia?

    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 from Ottawa to District of Columbia with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ottawa to District of Columbia?

    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 from Ottawa to District of Columbia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to District of Columbia?

    The cheapest time of day to fly to District of Columbia is generally in the evening, when round-trip flights cost $328 on average. Morning departures are around 49% more expensive than evening flights, on average. The most expensive time of day to fly to District of Columbia is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $673.

Top tips for finding cheap flights to District of Columbia

  • Looking for a cheap flight? 25% of our users found tickets from Ottawa to the following destinations at these prices or less: Washington, D.C. $257 one-way - $420 round-trip

Reviews of the top 3 airlines serving from Ottawa to District of Columbia

 
See real verified KAYAK customer reviews for airlines flying from Ottawa to District of Columbia. 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 District of Columbia? 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 384 reviews
8.0Comfort
8.2Boarding
7.6Food
7.0Entertainment
8.6Crew
Airline reviews

Smaller plane. Food and bar service for free is amazing. Drinks were in glass not plastic cups.

10.0 ExcellentMike, Oct 2025YYC - YYZ
Read more Porter Airlines reviews

Smaller plane. Food and bar service for free is amazing. Drinks were in glass not plastic cups.

Poor landing as we overshot the runway and had to re land the plane. Lost both of my luggage not found as of yet. Had to pay extra money for my luggage in USD, now great my luggage is gone. Will not fly with Porter again.

This flight to St. Johns was really good. Boarding was a breeze. We left spot on time. Seats were actually pretty good. Recliner further than I expected. Three more flights to go we will see if this is the status quo for Porter.👍

I was not happy with AirfareAssist, the agency that kayak advised me would be handling my booking. I was advised by porter airlines that I had been overcharged for the Basic express , a option that I had asked airfare assist to help arrange after I realized that the basic fare I had chosen with porter did not include a carryon. At each checkin porter advised I had been overcharged for this . They advised that money would be refunded to my credit card, however, this is not likely to happen as it is not my name and credit card that appeared on the porter invoice, but that of another individual/agent. When airfare assist was arranging the basic express with porter on my behalf, they asked me to confirm that I agreed to pay $263 USD for this. I did agree, as I was advised this was needed to proceed. When I checked the invoice on the porter website and saw that it was not my name and credit card on the invoice, I was advised that this was how airfareassist processed the payment. The Porter invoice indicated a billed amount of $126USD I will not use Kayak or their designated AirfareAssist again

Our flight was delayed by a bit. I appreciated that we were kept informed on why periodically. Boarding was fine. I overheard one flight attendant sounding very rude to a passenger who was not paying attention to the safety demonstration. The snacks were minimal as it was a short flight. There was no entertainment. Overall the flight was good back to LGA.

There was a 5 hour delay. Missed connection and now an almost 21 hour lay over!

The flight was fine see earlier note for the problem

All good the seats a little tight and no I pad screen

Everything was good except the fact you charge more for a carry on bag vs a check in bag and to top it off in US$ that was not impressive

Our flight was cancelled at the last minute for maintenance reasons and we were rebooked on a late flight when we purposefully booked our flight to be home early due to work.

Efficient all round, very good crew. Short flight so the food, of course, was just snacks

Crew was dismissive. Snacks and refills not offered. Poor business class experience. Bed not comfortable compared to Emirates or BA.

Flight was delayed for 5 hours because crew didn’t have enough time to rest - this seems like it could have been avoided with better scheduling. Food was not good.

IAD with the archaic people movers is just a place to be avoided.

Overall, it was good. I was seating next to a wonderful lady and did not notice how time flew. Thanks

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

This is the best united airlines flight that I took. The crew was very friendly and the food was tasty!

It is clear that someone knew, and competent, is in charge of food at United Airlines at least for the international flights. I was flying in coach, but the choices of the dinner were excellent. Tasty, and appropriate size. I had the beef, which was a little bit like a shepherds pie, and it was good. Nothing comparable has been served on a United flight in years. It will not be confused with three star food, but it is very good for airline food. Even better was the breakfast choice between a cinnamon roll and a breakfast sandwich. I chose the breakfast sandwich which was absolutely delicious and which I would happily order again at my local Starbucks or Panera. It is clear that someone knew indifferent is in charge of the food and it’s about time.

Had one staff that was not pleasant. Seems they are stressed with too many people to care for.

I would have liked an opportunity to move to a different seat ( even would have checked in my hand luggage)as I had health issues where I didn't have to clamber over the passenger next to me to for toilet use/ movement [ She was a highly unpleasant neighbor to sit next to]. In addition, I found that my European phone plan had run out of data and so I was not receiving emails from yourselves on airport wifi to be able to check in online and verifications difficult as did not accept the ticket number I had. I asked for an extra blanket but was told there was none. Then I saw other passengers receiving them. I couldn't eat the food and asked for snacks : Stewardess said " on the way" but they did not bring. The best bit was the check in process in Lisbon. Very efficient. However, I did not understand why we had to collect our bags at Washington then go through customs again. It was not explained. I also with my leg and health issue had approximately mile walk to the gate ( which then changed) . There appeared to be no moving walkways or help provided.

Flying with Air Canada is still better than the discount airlines like Flair. The seats are more comfortable and the on-board entertainment is better, with each seat having a built in screen and lots of content to watch. Onboard WIFI is also great to have, as well as plugs for charging. I think passengers in general are getting better at not bringing too much luggage onboard, and Air Canada is better at managing this without customers feeling like they are being taken advantage of with extra fees. I have travelled on different airlines and all seem to be loading faster, with fewer people bringing both a carry on and a personal item. Now I just bring one item and it fits under the seat so I don't need to worry about finding a place in the overhead bins. Overall, across the industry, asking customers to pay for carry on baggage is fair because it allows customers to only pay for what they need, and it helps to keep the planes on time. Kudos to Air Canada for its approach - the desired result is achieved without customers feeling that they are being surprised and caught with unexpected extra fees.

Due to the strike by AC flight attendants, my flight was cancelled. Very disappointing! A refund is being processed. This was not a Kayak issue. I will be sure to come back to Kayak in the future.

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

Economy seats always cramped, no meal on international flight, no plugs for electronics, but we got there and cabin crew was excellent.

Staff was very courteous and kept things organized. We will definitely use Air Canada for further travel

Great flights. 90 minute departure delay for maintenance issues, not a great start but, afer that very good. Didn't pay extra for seats and lucked into a window and an aisle seat. Price was excellent at the super low economy level.

Just a little improvement on food but everything is excellent

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 .

They lost my checked in luggage, why do I pay for my cargo not arriving at the same destination as me?

Poor planning meant the plane was delayed an hour, then a thunder storm started and the ground staff couldn't work. Eventual arrival in Santiago was 3 hours late resulting in missed connections and the need to buy new tickets.

Everything you need to know for your flight from Ottawa to District of Columbia

Information on your arrival and departure airports

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