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Cheap flights from Washington, D.C. to Ottawa from $118

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. to Ottawa departing on 10/16. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Washington, D.C. to Ottawa

Cheap round-trip flights

Porter Airlines Logo
4:20 pm - 8:34 pmIAD-YOW
4h 14m1 stop
Porter Airlines Logo
7:00 am - 10:16 amYOW-IAD
3h 16m1 stop
$261Porter Airlines
Find Deal
jue., sep. 4 - dom., sep. 7
Porter Airlines Logo
4:20 pm - 8:34 pmIAD-YOW
4h 14m1 stop
Porter Airlines Logo
7:00 am - 10:16 amYOW-IAD
3h 16m1 stop
$267Porter Airlines
Find Deal
jue., sep. 11 - vie., sep. 12
Porter Airlines Logo
4:20 pm - 8:34 pmIAD-YOW
4h 14m1 stop
Porter Airlines Logo
11:00 am - 3:06 pmYOW-IAD
4h 06m1 stop
$275Porter Airlines
Find Deal
jue., sep. 11 - mié., sep. 17
Porter Airlines Logo
11:35 am - 4:34 pmIAD-YOW
4h 59m1 stop
Porter Airlines Logo
8:35 am - 3:06 pmYOW-IAD
6h 31m1 stop
$276Porter Airlines
Find Deal
lun., sep. 22 - lun., sep. 29
Air Canada Logo
4:35 pm - 8:14 pmDCA-YOW
3h 39m1 stop
Air Canada Logo
6:00 am - 10:20 amYOW-DCA
4h 20m1 stop
$291Air Canada
Find Deal
lun., sep. 22 - lun., sep. 29
Air Canada Logo
12:55 pm - 2:26 pmDCA-YOW
1h 31mnonstop
Air Canada Logo
10:25 am - 12:08 pmYOW-DCA
1h 43mnonstop
$292Air Canada
Find Deal
lun., sep. 22 - lun., sep. 29
Logo
10:20 am - 5:17 pmIAD-YOW
6h 57m1 stop
Logo
8:35 am - 3:06 pmYOW-IAD
6h 31m1 stop
$297
Find Deal
jue., sep. 4 - lun., sep. 8
Logo
4:10 pm - 9:03 pmIAD-YOW
4h 53m1 stop
Logo
2:40 pm - 9:05 pmYOW-IAD
6h 25m1 stop
$300
Find Deal
jue., ago. 28 - jue., sep. 4
United Airlines Logo
6:00 am - 11:45 amDCA-YOW
5h 45m1 stop
United Airlines Logo
12:30 pm - 5:42 pmYOW-DCA
5h 12m1 stop
$597United Airlines
Find Deal
jue., sep. 4 - lun., sep. 8
United Airlines Logo
10:30 am - 9:09 pmDCA-YOW
10h 39m2 stops
United Airlines Logo
1:55 pm - 6:04 pmYOW-DCA
4h 09m1 stop
$747United Airlines
Find Deal
jue., sep. 11 - lun., sep. 15

Porter Airlines flights from Washington, D.C. to Ottawa

Our best Porter Airlines deals on Washington, D.C. to Ottawa flight tickets
Porter Airlines
Sep 4
IAD4:20 pmWashington, D.C. Dulles Intl
4h 14m
1 stop
YOW8:34 pmOttawa
Sep 7
YOW7:00 amOttawa
3h 16m
1 stop
IAD10:16 amWashington, D.C. Dulles Intl
$261
Find similar
Porter Airlines
Sep 11
IAD4:20 pmWashington, D.C. Dulles Intl
4h 14m
1 stop
YOW8:34 pmOttawa
Sep 12
YOW7:00 amOttawa
3h 16m
1 stop
IAD10:16 amWashington, D.C. Dulles Intl
$267
Find similar
Porter Airlines
Sep 11
IAD4:20 pmWashington, D.C. Dulles Intl
4h 14m
1 stop
YOW8:34 pmOttawa
Sep 17
YOW11:00 amOttawa
4h 06m
1 stop
IAD3:06 pmWashington, D.C. Dulles Intl
$275
Find similar

Air Canada flights from Washington, D.C. to Ottawa

Our best Air Canada deals on Washington, D.C. to Ottawa flight tickets
Air Canada
Sep 22
DCA4:35 pmWashington, D.C. Reagan-National
3h 39m
1 stop
YOW8:14 pmOttawa
Sep 29
YOW6:00 amOttawa
4h 20m
1 stop
DCA10:20 amWashington, D.C. Reagan-National
$291
Find similar
Air Canada
Sep 22
DCA12:55 pmWashington, D.C. Reagan-National
1h 31m
YOW2:26 pmOttawa
Sep 29
YOW10:25 amOttawa
1h 43m
DCA12:08 pmWashington, D.C. Reagan-National
$292
Find similar
Air Canada
Sep 22
DCA9:40 amWashington, D.C. Reagan-National
4h 11m
1 stop
YOW1:51 pmOttawa
Sep 29
YOW10:25 amOttawa
1h 43m
DCA12:08 pmWashington, D.C. Reagan-National
$294
Find similar

See travel insights to Ottawa from

How to get the cheapest flight ticket from Washington, D.C. to Ottawa

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 Ottawa?

In general, January is the cheapest month to fly from Washington, D.C. to Ottawa. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $257. The month of November is another great option to travel to Ottawa, with average flight prices from Washington, D.C. averaging around $309.

What is the cheapest day to depart on your flight to Ottawa?

The cheapest day to depart from Washington, D.C. to Ottawa is on a Monday. Travelers who choose to depart for Ottawa on a Monday will often find tickets for as low as $434. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to Ottawa on Sunday is $492.

What is the cheapest time of day to depart on your flight to Ottawa?

In the morning is the cheapest time of day to fly from Washington, D.C. to Ottawa when you can find flight prices for as low as $442. Flying to Ottawa in the morning is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $676 on average. Flights to Ottawa from Washington, D.C. in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

Fly from Washington, D.C. Reagan-National to Ottawa for the best Washington, D.C. - Ottawa flight prices

How far in advance should I book a flight to Ottawa?

You are more likely to see cheaper flights to Ottawa from Washington, D.C. when booking weeks ahead of your departure date. In general, you can expect to find flights to Ottawa for around $384 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ottawa from Washington, D.C. for as low as $189 on momondo.

What cabin class options are available on Washington, D.C. to Ottawa flights?

There are 4 cabin classes available to choose from on Washington, D.C. to Ottawa 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 Washington, D.C. to Ottawa flights?

You could potentially save up to 9% on your flight if you consider stops on a Washington, D.C. to Ottawa flight.

How have Washington, D.C. to Ottawa flight prices changed over time?

As of July 2025, prices for Washington, D.C. to Ottawa flights are approximately 12% cheaper when compared to flights at the same time last year.

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

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. to Ottawa according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Washington, D.C. to Ottawa (WAS to YOW) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. to Ottawa

Best Price Found

$118

Fastest flight time

1h 31m

Direct flights

Every day

Airports in Ottawa

1 airport
The best one-way flight to Ottawa from Washington, D.C. in the past 72 hours is $118. The best round-trip flight deal from Washington, D.C. to Ottawa found on momondo in the last 72 hours is $261.
The fastest flight from Washington, D.C. to Ottawa takes 1h 31m
Direct flights go from Washington, D.C. to Ottawa every day.
There is 1 airport near Ottawa: Ottawa (YOW)
Search flight deals

  • How far is Washington, D.C. to Ottawa by plane?

    The straight-line distance from Washington, D.C. to Ottawa is 454.6 mi. 1h 31m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Washington, D.C. to Ottawa Airport?

    Prices for flights from Washington, D.C. to Ottawa Airport were last updated today.

  • How many operators does momondo search for flights from Washington, D.C. to Ottawa Airport?

  • How old do you have to be to fly from Washington, D.C. to Ottawa Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. to Ottawa Airport.

  • What documentation or ID do you need to fly to Ottawa Airport?

    The required travel and health documents for your Ottawa Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Ottawa Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Washington, D.C. to Ottawa?

  • What is the most popular airline from Washington, D.C. to Ottawa?

Best airlines flying from Washington, D.C. to Ottawa

Compare and see reviews for airlines that fly from Washington, D.C. to Ottawa with momondo
Airline
Rating
Free Cancellation
Price
Air CanadaPriceFrom $174Free CancellationRating
7.1
9,717 reviews
Search Air Canada flights
United AirlinesPriceFrom $176Free CancellationRating
7.4
8,856 reviews
Search United Airlines flights
Porter AirlinesPriceFrom $188Free CancellationRating
8.0
306 reviews
Search Porter Airlines flights

  • United Airlines Flights From Washington, D.C. to Ottawa

    The lowest priced United Airlines flight from Washington, D.C. to Ottawa from the last 72 hours was $176. Generally, United Airlines has 27 flights on this route every week with an average price of $467. United Airlines is rated 7.4/10 by our users.

  • Air Canada Flights From Washington, D.C. to Ottawa

    Across 9,717 Air Canada reviews on momondo, the average score is 7.1/10. Air Canada flies from Washington, D.C. to Ottawa about 27 times each week, with ticket deals ranging from $174 to $528. Price data is based on momondo searches in the last 72 hours.

Traveling to a place near Ottawa?

Book flights to Ottawa if you plan to visit one of these locations
Gatineau
Smiths Falls
Calabogie
Brockville
Pembroke
Prescott
Winchester
Wakefield
Petawawa

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to Ottawa?

It is quick and easy to find Washington, D.C. to Ottawa flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Ottawa that suits you.

Can I find flights from Washington, D.C. to Ottawa with flexible booking policies on momondo?

All flight searches from Washington, D.C. to Ottawa on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Washington, D.C. to Ottawa?

Once you have performed a search for Washington, D.C. to Ottawa flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Washington, D.C. to Ottawa right now. Can momondo alert me if prices change?

Price alerts on flights to Ottawa from Washington, D.C. are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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