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Cheap flights from Ottawa to Washington, D.C. from $152

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 4/4. 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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0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Porter Airlines Logo
7:00 am - 10:22 am
YOW
-
IAD
3h 22m
1 stop
Porter Airlines Logo
11:40 am - 3:44 pm
IAD
-
YOW
4h 04m
1 stop
$257Porter Airlines
Wed, Feb 18 - Wed, Feb 25
Porter Airlines Logo
1:20 pm - 5:14 pm
YOW
-
IAD
3h 54m
1 stop
Porter Airlines Logo
11:40 am - 3:04 pm
IAD
-
YOW
3h 24m
1 stop
$261Porter Airlines
Fri, Apr 10 - Sun, Apr 12
Porter Airlines Logo
7:00 am - 10:22 am
YOW
-
IAD
3h 22m
1 stop
Porter Airlines Logo
11:40 am - 5:29 pm
IAD
-
YOW
5h 49m
1 stop
$263Porter Airlines
Wed, Feb 25 - Wed, Mar 4
Porter Airlines Logo
7:00 am - 10:22 am
YOW
-
IAD
3h 22m
1 stop
Porter Airlines Logo
11:40 am - 3:44 pm
IAD
-
YOW
4h 04m
1 stop
$266Porter Airlines
Wed, Feb 18 - Thu, Feb 26
Porter Airlines Logo
1:20 pm - 5:14 pm
YOW
-
IAD
3h 54m
1 stop
Porter Airlines Logo
11:40 am - 3:04 pm
IAD
-
YOW
3h 24m
1 stop
$271Porter Airlines
Fri, Apr 10 - Sun, Apr 12
Porter Airlines Logo
12:10 pm - 5:14 pm
YOW
-
IAD
5h 04m
1 stop
Porter Airlines Logo
11:40 am - 5:29 pm
IAD
-
YOW
5h 49m
1 stop
$273Porter Airlines
Sun, Apr 26 - Thu, Apr 30
Porter Airlines Logo
8:40 am - 12:34 pm
YOW
-
IAD
3h 54m
1 stop
Porter Airlines Logo
11:40 am - 3:44 pm
IAD
-
YOW
4h 04m
1 stop
$289Porter Airlines
Sat, Feb 21 - Wed, Feb 25
Porter Airlines Logo
1:20 pm - 5:14 pm
YOW
-
IAD
3h 54m
1 stop
Porter Airlines Logo
6:30 pm - 10:29 pm
IAD
-
YOW
3h 59m
1 stop
$294Porter Airlines
Fri, Apr 3 - Tue, Apr 7
United Airlines Logo
7:30 pm - 9:23 pm
YOW
-
IAD
1h 53mnonstop
United Airlines Logo
8:26 am - 1:32 pm
IAD
-
YOW
5h 06m
1 stop
$296United Airlines
Mon, Mar 9 - Tue, Mar 10
Porter Airlines Logo
6:50 am - 10:22 am
YOW
-
IAD
3h 32m
1 stop
Porter Airlines Logo
11:40 am - 6:09 pm
IAD
-
YOW
6h 29m
1 stop
$297Porter Airlines
Thu, Feb 19 - Mon, Feb 23

Porter Airlines flights from Ottawa to Washington, D.C. Dulles Intl Airport

Our best Porter Airlines deals on Ottawa to Washington, D.C. Dulles Intl Airport flight tickets
Porter Airlines
Feb 18
YOW7:00 amOttawa
3h 22m
1 stop
IAD10:22 amWashington, D.C. Dulles Intl
Feb 25
IAD11:40 amWashington, D.C. Dulles Intl
4h 04m
1 stop
YOW3:44 pmOttawa
$257
Porter Airlines
Apr 10
YOW1:20 pmOttawa
3h 54m
1 stop
IAD5:14 pmWashington, D.C. Dulles Intl
Apr 12
IAD11:40 amWashington, D.C. Dulles Intl
3h 24m
1 stop
YOW3:04 pmOttawa
$261
Porter Airlines
Feb 25
YOW7:00 amOttawa
3h 22m
1 stop
IAD10:22 amWashington, D.C. Dulles Intl
Mar 4
IAD11:40 amWashington, D.C. Dulles Intl
5h 49m
1 stop
YOW5:29 pmOttawa
$263

Air Canada flights from Ottawa to Washington, D.C. Dulles Intl Airport

Our best Air Canada deals on Ottawa to Washington, D.C. Dulles Intl Airport flight tickets
Air Canada
Feb 25
YOW10:20 amOttawa
5h 29m
1 stop
IAD3:49 pmWashington, D.C. Dulles Intl
Mar 4
IAD9:45 amWashington, D.C. Dulles Intl
4h 22m
1 stop
YOW2:07 pmOttawa
$308
Air Canada
Feb 20
YOW10:20 amOttawa
5h 29m
1 stop
IAD3:49 pmWashington, D.C. Dulles Intl
Feb 24
IAD9:00 amWashington, D.C. Dulles Intl
4h 18m
1 stop
YOW1:18 pmOttawa
$314
Air Canada
Mar 28
YOW2:50 pmOttawa
6h 04m
1 stop
IAD8:54 pmWashington, D.C. Dulles Intl
Mar 31
IAD9:00 amWashington, D.C. Dulles Intl
4h 14m
1 stop
YOW1:14 pmOttawa
$321

momondo Fare Finder

 
Customize your flight search to find flights from Ottawa to Washington, D.C. Dulles Intl Airport 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 January 29, 2026.
Use the filters below to find and compare flights from Ottawa to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Wed 2/18

7:00 am-10:22 am

1 stop3h 22m

Washington, D.C. Dulles Intl

Wed 2/25

11:40 am-3:44 pm

1 stop4h 04m

$257

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Fri 4/10

1:20 pm-5:14 pm

1 stop3h 54m

Washington, D.C. Dulles Intl

Sun 4/12

11:40 am-3:04 pm

1 stop3h 24m

$261

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Wed 2/25

7:00 am-10:22 am

1 stop3h 22m

Washington, D.C. Dulles Intl

Wed 3/4

11:40 am-5:29 pm

1 stop5h 49m

$263

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Wed 2/18

7:00 am-10:22 am

1 stop3h 22m

Washington, D.C. Dulles Intl

Thu 2/26

11:40 am-3:44 pm

1 stop4h 04m

$266

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Fri 4/10

1:20 pm-5:14 pm

1 stop3h 54m

Washington, D.C. Dulles Intl

Sun 4/12

11:40 am-3:04 pm

1 stop3h 24m

$271

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Sun 4/26

12:10 pm-5:14 pm

1 stop5h 04m

Washington, D.C. Dulles Intl

Thu 4/30

11:40 am-5:29 pm

1 stop5h 49m

$273

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Sat 2/21

8:40 am-12:34 pm

1 stop3h 54m

Washington, D.C. Dulles Intl

Wed 2/25

11:40 am-3:44 pm

1 stop4h 04m

$289

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Fri 4/3

1:20 pm-5:14 pm

1 stop3h 54m

Washington, D.C. Dulles Intl

Tue 4/7

6:30 pm-10:29 pm

1 stop3h 59m

$294

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Mon 3/9

7:30 pm-9:23 pm

Nonstop1h 53m

Washington, D.C. Dulles Intl

Tue 3/10

8:26 am-1:32 pm

1 stop5h 06m

$296

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Thu 2/19

6:50 am-10:22 am

1 stop3h 32m

Washington, D.C. Dulles Intl

Mon 2/23

11:40 am-6:09 pm

1 stop6h 29m

$297

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. Dulles Intl Airport

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. Dulles Intl Airport?

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

In general, April is the cheapest month to fly from Ottawa to Washington, D.C. Dulles Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $311. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of April, then flying in July is also cheap. Prices for this month can be found on momondo for an average of $317.

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

Our data shows that Friday is the least expensive day to fly to Washington, D.C. Dulles Intl Airport. Tickets to fly out on this day can be as low as $570. 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. Dulles Intl Airport for around $780.

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

Flying to Washington, D.C. Dulles Intl Airport from Ottawa in the morning is the least expensive time of day to depart. momondo users have found prices as low as $589 when looking at flights departing in the morning. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $727 on average. Flights to Washington, D.C. Dulles Intl Airport from Ottawa at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

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

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

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

You could potentially save up to 24% on your flight if you consider stops on a Ottawa to Washington, D.C. Dulles Intl Airport flight.

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

As of January 2026, prices for Ottawa to Washington, D.C. Dulles Intl Airport flights are approximately 18% more expensive when compared to flights at the same time last year.

When to book flights from Ottawa to Washington, D.C. Dulles Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Ottawa to Washington, D.C. Dulles Intl Airport 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. Dulles Intl Airport (YOW to IAD) flight deals and tips

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

Best Price Found

$238

Fastest flight time

1h 50m

Direct flights

Every day
The best one-way flight to Washington, D.C. Dulles Intl Airport from Ottawa in the past 72 hours is $238. The best round-trip flight deal from Ottawa to Washington, D.C. Dulles Intl Airport found on momondo in the last 72 hours is $293.
The fastest flight from Ottawa to Washington, D.C. Dulles Intl Airport takes 1h 50m
Direct flights go from Ottawa to Washington, D.C. Dulles Intl Airport every day.
Search flight deals

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

    The distance between Ottawa and Washington, D.C. Dulles Intl is about 455.4 mi. By plane, this route typically takes 1h 50m.

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

    Prices for flights from Ottawa Airport to Washington, D.C. Dulles Intl Airport are updated daily.

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Ottawa Airport to Washington, D.C. Dulles Intl Airport.

  • What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?

    The travel and health documents required for your trip to Washington, D.C. Dulles Intl Airport 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. Dulles Intl Airport. 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. Dulles Intl Airport?

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

Best airlines flying from Ottawa to Washington, D.C. Dulles Intl Airport

Compare and see reviews for airlines that fly from Ottawa to Washington, D.C. Dulles Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $281Free CancellationRating
7.4
9,215 reviews
Search United Airlines flights
Air CanadaPriceFrom $388Free CancellationRating
7.1
10,667 reviews
Search Air Canada flights

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

    Across 21 United Airlines flights from Ottawa to Washington, D.C. Dulles Intl Airport this week, the average price was $443, with the best United Airlines deals starting from $281 round-trip. 9,215 users have rated United Airlines on momondo, with an average score of 7.4/10.

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

    Air Canada (7.1/10 from 10,667 reviews) operates around 21 flights from Ottawa to Washington, D.C. Dulles Intl Airport in any given week. The average Air Canada airfare for this route is around $420, with deals from around $388 rare but found on momondo. Referenced prices are for round-trip Ottawa to Washington, D.C. Dulles Intl Airport flight searches in the last 72 hours.

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
Winchester
Waldorf
Woodbridge
Tysons
Laurel
Colonial Beach
Silver Spring
Towson
Fredericksburg
Gaithersburg
Rockville
Manassas
Springfield
Sterling
Fairfax
Linthicum Heights

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?

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

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

Once all potential Ottawa to Washington, D.C. flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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 simply researching potential flights to Washington, D.C., momondo offers a useful price alert feature which will track prices for flights to Washington, D.C. from Ottawa and alert you when they change.

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