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Cheap flights from Ottawa to Washington, D.C. from $169

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 4/30. 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 Ottawa to Washington, D.C.

Cheap round-trip flights

Enter your travel dates to find the best prices.
Porter Airlines Logo
6:45 am - 10:54 am
YOW
-
IAD
4h 09m
1 stop
Porter Airlines Logo
11:40 am - 5:04 pm
IAD
-
YOW
5h 24m
1 stop
$285Porter Airlines
Wed, Apr 8 - Thu, Apr 30
Porter Airlines Logo
6:45 am - 10:54 am
YOW
-
IAD
4h 09m
1 stop
Porter Airlines Logo
11:40 am - 3:04 pm
IAD
-
YOW
3h 24m
1 stop
$286Porter Airlines
Mon, Apr 13 - Wed, Apr 22
Porter Airlines Logo
6:45 am - 10:54 am
YOW
-
IAD
4h 09m
1 stop
Porter Airlines Logo
11:40 am - 3:04 pm
IAD
-
YOW
3h 24m
1 stop
$288Porter Airlines
Wed, Apr 8 - Tue, Apr 14
Porter Airlines Logo
6:45 am - 10:54 am
YOW
-
IAD
4h 09m
1 stop
Porter Airlines Logo
11:40 am - 5:29 pm
IAD
-
YOW
5h 49m
1 stop
$295Porter Airlines
Wed, Apr 15 - Wed, Apr 22
Air Canada Logo
10:25 am - 12:01 pm
YOW
-
DCA
1h 36mnonstop
Air Canada Logo
6:59 am - 1:16 pm
DCA
-
YOW
6h 17m
1 stop
$304Air Canada
Fri, Apr 17 - Mon, Apr 20
Air Canada Logo
10:25 am - 12:01 pm
YOW
-
DCA
1h 36mnonstop
Air Canada Logo
12:55 pm - 2:27 pm
DCA
-
YOW
1h 32mnonstop
$305Air Canada
Wed, Apr 8 - Tue, Apr 14
United Airlines Logo
6:00 am - 7:50 am
YOW
-
IAD
1h 50mnonstop
United Airlines Logo
8:15 am - 10:03 am
IAD
-
YOW
1h 48mnonstop
$306United Airlines
Wed, Apr 8 - Thu, Apr 30
United Airlines Logo
6:00 am - 7:44 am
YOW
-
IAD
1h 44mnonstop
United Airlines Logo
5:42 pm - 10:05 pm
IAD
-
YOW
4h 23m
1 stop
$312United Airlines
Tue, Jul 14 - Tue, Jul 14
Multiple Airlines Logo
7:00 am - 5:07 pm
YOW
-
BWI
10h 07m
1 stop
Multiple Airlines Logo
7:30 am - 4:53 pm
BWI
-
YOW
9h 23m
1 stop
$315Multiple Airlines
Sat, May 9 - Mon, May 11
Multiple Airlines Logo
11:00 am - 8:07 pm
YOW
-
BWI
9h 07m
2 stops
Multiple Airlines Logo
7:30 am - 4:53 pm
BWI
-
YOW
9h 23m
1 stop
$333Multiple Airlines
Sat, May 9 - Mon, May 11

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

Our best Porter Airlines deals on Ottawa to Washington, D.C. flight tickets
Porter Airlines
Apr 8
YOW6:45 amOttawa
4h 09m
1 stop
IAD10:54 amWashington, D.C. Dulles Intl
Apr 30
IAD11:40 amWashington, D.C. Dulles Intl
5h 24m
1 stop
YOW5:04 pmOttawa
$285
Porter Airlines
Apr 13
YOW6:45 amOttawa
4h 09m
1 stop
IAD10:54 amWashington, D.C. Dulles Intl
Apr 22
IAD11:40 amWashington, D.C. Dulles Intl
3h 24m
1 stop
YOW3:04 pmOttawa
$286
Porter Airlines
Apr 8
YOW6:45 amOttawa
4h 09m
1 stop
IAD10:54 amWashington, D.C. Dulles Intl
Apr 14
IAD11:40 amWashington, D.C. Dulles Intl
3h 24m
1 stop
YOW3:04 pmOttawa
$288

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

Our best United Airlines deals on Ottawa to Washington, D.C. flight tickets
United Airlines
Apr 8
YOW6:00 amOttawa
1h 50m
IAD7:50 amWashington, D.C. Dulles Intl
Apr 30
IAD8:15 amWashington, D.C. Dulles Intl
1h 48m
YOW10:03 amOttawa
$306
United Airlines
Jul 14
YOW6:00 amOttawa
1h 44m
IAD7:44 amWashington, D.C. Dulles Intl
Jul 14
IAD5:42 pmWashington, D.C. Dulles Intl
4h 23m
1 stop
YOW10:05 pmOttawa
$312
United Airlines
Apr 15
YOW7:30 pmOttawa
1h 48m
IAD9:18 pmWashington, D.C. Dulles Intl
Apr 22
IAD5:41 pmWashington, D.C. Dulles Intl
4h 24m
1 stop
YOW10:05 pmOttawa
$316

momondo Fare Finder

 
Customize your flight search to find flights from Ottawa to Washington, D.C. that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated March 19, 2026.
Use the filters below to find and compare flights from Ottawa to Washington, D.C. that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Wed 4/8

6:45 am-10:54 am

1 stop4h 09m

Washington, D.C. Dulles Intl

Thu 4/30

11:40 am-5:04 pm

1 stop5h 24m

$285

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Mon 4/13

6:45 am-10:54 am

1 stop4h 09m

Washington, D.C. Dulles Intl

Wed 4/22

11:40 am-3:04 pm

1 stop3h 24m

$286

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Wed 4/8

6:45 am-10:54 am

1 stop4h 09m

Washington, D.C. Dulles Intl

Tue 4/14

11:40 am-3:04 pm

1 stop3h 24m

$288

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Wed 4/15

6:45 am-10:54 am

1 stop4h 09m

Washington, D.C. Dulles Intl

Wed 4/22

11:40 am-5:29 pm

1 stop5h 49m

$295

OttawaWashington, D.C.

YOW - DCA

YOWDCA

Ottawa

Fri 4/17

10:25 am-12:01 pm

Nonstop1h 36m

Washington, D.C. Reagan-National

Mon 4/20

6:59 am-1:16 pm

1 stop6h 17m

$304
Quickest round-trip

OttawaWashington, D.C.

YOW - DCA

YOWDCA

Ottawa

Wed 4/8

10:25 am-12:01 pm

Nonstop1h 36m

Washington, D.C. Reagan-National

Tue 4/14

12:55 pm-2:27 pm

Nonstop1h 32m

$305

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Wed 4/8

6:00 am-7:50 am

Nonstop1h 50m

Washington, D.C. Dulles Intl

Thu 4/30

8:15 am-10:03 am

Nonstop1h 48m

$306

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Tue 7/14

6:00 am-7:44 am

Nonstop1h 44m

Washington, D.C. Dulles Intl

Tue 7/14

5:42 pm-10:05 pm

1 stop4h 23m

$312

OttawaBaltimore

YOW - BWI

YOWBWI

Ottawa

Sat 5/9

7:00 am-5:07 pm

1 stop10h 07m

Baltimore/Washington

Mon 5/11

7:30 am-4:53 pm

1 stop9h 23m

$315

OttawaBaltimore

YOW - BWI

YOWBWI

Ottawa

Sat 5/9

11:00 am-8:07 pm

2 stops9h 07m

Baltimore/Washington

Mon 5/11

7:30 am-4:53 pm

1 stop9h 23m

$333

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 typical price of a round-trip flight between Ottawa and Washington, D.C.?

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

The month of August is, on average, the cheapest month to fly to Washington, D.C. from Ottawa, with most prices found around $304. If you’re not able to fly to Washington, D.C. in August, then April is your next best option. Flight prices from Ottawa to Washington, D.C. during April average around $309.

What is the cheapest day to depart on your flight to Washington, D.C.?

On average, the least expensive day to fly to Washington, D.C. from Ottawa is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $508. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Ottawa to Washington, D.C. for around $691.

What is the cheapest time of day to depart on your flight to Washington, D.C.?

In the morning is the cheapest time of day to fly from Ottawa to Washington, D.C. when you can find flight prices for as low as $486. Flying to Washington, D.C. in the morning is an ideal time because this is during off-peak travel hours. Try not to purchase tickets at noon because they tend to be around $703. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

Fly from Ottawa to Washington, D.C. Dulles Intl for the best Ottawa - Washington, D.C. flight prices

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 13% 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 March 2026, prices for Ottawa to Washington, D.C. flights are approximately 14% more expensive when compared to flights at the same time last year.

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

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

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

$269

Fastest flight time

1h 35m

Direct flights

Every day

Airports in Washington, D.C.

2 airports
The best one-way flight to Washington, D.C. from Ottawa in the past 72 hours is $269. The best round-trip flight deal from Ottawa to Washington, D.C. found on momondo in the last 72 hours is $374.
The fastest flight from Ottawa to Washington, D.C. takes 1h 35m
Direct flights go from Ottawa to Washington, D.C. every day.
There are 2 airports in Washington, D.C.. From Ottawa there are direct flights to Washington, D.C. Reagan-National (DCA), Washington, D.C. Dulles Intl (IAD).
Search flight deals

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

    The distance between Ottawa and Washington, D.C. is about 454.6 mi. In terms of flight time, this usually takes a little over 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 refreshed on a daily basis.

  • How many operators does momondo search 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.?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for 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 you'll need for your trip to Washington, D.C. may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Washington, D.C.. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

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

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

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
Air CanadaPriceFrom $296Free CancellationRating
7.1
10,818 reviews
Search Air Canada flights
United AirlinesPriceFrom $338Free CancellationRating
7.4
9,451 reviews
Search United Airlines flights

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

    Across 30 United Airlines flights from Ottawa to Washington, D.C. this week, the average price was $443, with the best United Airlines deals starting from $338 round-trip. 9,439 users have rated United Airlines on momondo, with an average score of 7.4/10.

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

    $296 is the best Air Canada flight deal from Ottawa to Washington, D.C. found on momondo over the last 72 hours. The average Air Canada ticket price found was closer to $394, however, with flight time and availability significantly affecting the price. Air Canada (7.1/10 from 10,815 user reviews) flies into Washington, D.C. from Ottawa 27 times in an average week so prices can vary.

Traveling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
National Harbor
Gettysburg
Arlington
Waldorf
Woodbridge
Colonial Beach
Laurel
Towson
Gaithersburg
Silver Spring
Fredericksburg
Rockville
Tysons
Manassas
Springfield
Linthicum Heights
Bethesda
Fairfax
Reston

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Ottawa to Washington, D.C.. momondo saves you time and could save you money on your trip.

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

Flights from Ottawa to Washington, D.C. with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once you have performed a search for Ottawa to Washington, D.C. 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 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.

An easier way to manage your Washington, D.C. trip

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Find better results for your trip to the United States

Fly into one of these airports located in Washington, D.C.

Airports listed have a maximum distance of 22.4 mi from Washington, D.C.
Washington, D.C. Reagan-National Airport
Washington, D.C. Dulles Intl Airport