Cheap flights from Ottawa to Washington, D.C. from C$ 200
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ottawa to Washington, D.C. departing on 26/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Save money when you book flights with momondo
Big names, great deals
Big names, great deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Early arrival? Instantly customize your resultsTrusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from Ottawa to Washington, D.C.
Cheap round-trip flights
Cheap one-way flights
Cheap last-minute flights
Cheap direct flights
Porter Airlines flights from Ottawa to Washington, D.C.
Our best Porter Airlines deals on Ottawa to Washington, D.C. flight tickets
United Airlines flights from Ottawa to Washington, D.C.
Our best United Airlines deals on Ottawa to Washington, D.C. flight tickets
See travel insights to Washington, D.C. from
How to get the cheapest flight ticket from Ottawa to Washington, D.C.
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Washington, D.C.?
If you aren’t able to travel during the month of March, then book flights to Washington, D.C. from Ottawa during April instead. Flights to Washington, D.C. in April, while not as cheap as those in March, still average around C$ 410.
What is the cheapest day to depart on your flight to Washington, D.C.?
The cheapest day to depart from Ottawa to Washington, D.C. is on a Friday. Travellers who choose to depart for Washington, D.C. on a Friday will often find tickets for as low as C$ 813. The most expensive day to fly to Washington, D.C. is Sunday, with ticket prices averaging around C$ 999.
What is the cheapest time of day to depart on your flight to Washington, D.C.?
In the afternoon is the cheapest time of day to fly from Ottawa to Washington, D.C. when you can find flight prices for as low as C$ 433. Flying to Washington, D.C. in the afternoon is an ideal time because this is during off-peak travel hours. At noon is when there is more demand to fly to Washington, D.C., so prices are often more expensive at around C$ 1,077 per ticket.
What is the cheapest Ottawa to Washington, D.C. flight route?
Fly from Ottawa to Washington, D.C. Reagan-National for the best Ottawa - Washington, D.C. flight prices
How far in advance should I book a flight to Washington, D.C.?
You are more likely to see cheaper flights to Washington, D.C. from Ottawa when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. for around C$ 501 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. from Ottawa for as low as C$ 377 on momondo.
What cabin class options are available on Ottawa to Washington, D.C. flights?
There are 4 cabin classes available to choose from on Ottawa to Washington, D.C. flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
Can stopping save me money on Ottawa to Washington, D.C. flights?
You could potentially save up to 41% on your flight if you consider stops on a Ottawa to Washington, D.C. flight.
How have Ottawa to Washington, D.C. flight prices changed over time?
As of July 2025, prices for Ottawa to Washington, D.C. flights are approximately 3% more expensive when compared to flights at the same time last year.
What is the cheapest airline that flies from Ottawa to Washington, D.C.?
Porter Airlines, Air Canada, and United Airlines are the most popular carriers operating from Ottawa to Washington, D.C.
Which airlines fly to Washington, D.C.?
Air Canada, Porter Airlines and United Airlines are the top three most popular airlines that fly to Washington, D.C. from Ottawa according to our data. Air Canada is the first choice among our users, with 60% of people opting to fly with this airline when travelling to Washington, D.C.. Keep in mind that there are 5 different airlines that fly to Washington, D.C. on a routine basis, so you have a few additional options to choose from.
How many flights depart from Ottawa to Washington, D.C. on average per day?
The number of flights available between Ottawa and Washington, D.C. is 7 per day as of July 2025. The most frequent departure time is 9:00a.m., with 52% of daily flights leaving at noon.
How many flights depart from Ottawa to Washington, D.C. on average per week?
As of July 2025, there are 55 flights per week flying from Ottawa to Washington, D.C.. The most common day of the week flights depart is Mon, with 15% of flights taking off on this day.
When to book flights from Ottawa to Washington, D.C.
Cheap Ottawa to Washington, D.C. (YOW to WAS) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Ottawa to Washington, D.C.
Best price found | C$ 200 |
|---|---|
Fastest flight time | 1h 35m |
Direct flights | Every day |
Airports in Washington, D.C. | 3 airports |
How far is Ottawa to Washington, D.C. by plane?
Washington, D.C. is 731.6 km away from Ottawa. A reasonable flight in good conditions will take 1h 35m.
When did momondo last update prices for flights from Ottawa Airport to Washington, D.C.?
Prices for flights from Ottawa Airport to Washington, D.C. are updated daily.
How many operators does momondo search for flights from Ottawa Airport to Washington, D.C.?
As of July 2025, there are 3 operators available to choose from for flights from Ottawa Airport to Washington, D.C..
How old do you have to be to fly from Ottawa Airport to Washington, D.C.?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ottawa Airport to Washington, D.C..
What documentation or ID do you need to fly to Washington, D.C.?
The travel and health documents required for your trip to Washington, D.C. can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Washington, D.C.. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Ottawa to Washington, D.C.?
momondo data reveals that the most frequently booked plane model on the route from Ottawa to Washington, D.C. is Canadair (Bombardier) Regional Jet CRJ-550, representing 50.59% of all bookings. The subsequent popular models are Canadair (Bombardier) Regional Jet 900 at 21.36%, Embraer 195 E2 at 7.34%, and Boeing 787-9 Dreamliner at 3.54%.
What is the most popular airline from Ottawa to Washington, D.C.?
momondo data reveals that the most frequently booked airline on the route from Ottawa to Washington, D.C. is Air Canada, representing 64% of all bookings. The subsequent popular airlines are Porter Airlines at 28% and United Airlines at 8%.
Best airlines flying from Ottawa to Washington, D.C.
Compare and see reviews for airlines that fly from Ottawa to Washington, D.C. with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom C$ 328 | Free Cancellation | Rating 8.0 296 reviews | |||
| PriceFrom C$ 330 | Free Cancellation | Rating 7.4 8,858 reviews | |||
| PriceFrom C$ 336 | Free Cancellation | Rating 7.1 9,660 reviews |
United Airlines Flights From Ottawa to Washington, D.C.
United Airlines flies from Ottawa to Washington, D.C. around 27 times per week, with 8,858 momondo users rating the airline 7.4/10. The cheapest United Airlines deal from Ottawa to Washington, D.C. in the last 72 hours was C$ 242 (round-trip), much lower than the average airfare cost of C$ 554 for United Airlines flights on this route.
Air Canada Flights From Ottawa to Washington, D.C.
Another popular option for Ottawa to Washington, D.C. flights is Air Canada (7.1/10, 9,665 ratings). Air Canada flies from Ottawa to Washington, D.C. around 28 times per week, with deals starting from C$ 247 round-trip and rising to an average price of around C$ 395.
Travelling to a place near Washington, D.C.?
Book flights to Washington, D.C. if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Ottawa to Washington, D.C.?
momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Ottawa to Washington, D.C. . Millions of users trust and use momondo every year so you are in good hands.
Can I find flights from Ottawa to Washington, D.C. with flexible booking policies on momondo?
Yes. momondo allows you to filter the results for Ottawa to Washington, D.C. flights to just show those with flexible booking policies.
How can momondo help me find flights from Ottawa to Washington, D.C.?
Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Washington, D.C. from Ottawa.
I’m not ready to book a flight from Ottawa to Washington, D.C. right now. Can momondo alert me if prices change?
If you are not ready to book a flight from Ottawa to Washington, D.C. now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Washington, D.C. and let you know when they change.