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.

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 9 per day as of July 2026. The most frequent departure time is 10:00AM, with 51% of daily flights leaving at noon.

What airlines fly to Washington, D.C.?

Air Canada, United Airlines and Porter 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 72% of people opting to fly with this airline when traveling to Washington, D.C.. Keep in mind that there are 4 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 week?

The number of flights available between Ottawa and Washington, D.C. is 68 per week as of July 2026. The most frequent departure day is Mon, with 15% of weekly flights leaving on this day.

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.?

As of July 2026, there are 2 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.?

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.

$170 Cheap Flights from Ottawa to Washington, D.C. in 2026

Q: What is the typical price of a round-trip flight between Ottawa and Washington, D.C.?

Prices are currently low for flights on this route. Typical prices usually range from $384 to $465. The lowest price recently found on this route was $328.

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Ottawa to Washington, D.C.

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

12:15 pm - 4:41 pm

YOW

IAD

4h 26m

1 stop

5:20 pm - 9:52 pm

IAD

YOW

4h 32m

1 stop

$328Air Canada

Fri, Jul 24 - Sun, Aug 2

3:10 pm - 9:48 pm

YOW

DCA

6h 38m

1 stop

6:55 pm - 12:45 am

DCA

YOW

5h 50m

1 stop

$328Air Canada

Wed, Jul 22 - Sat, Jul 25

12:15 pm - 4:41 pm

YOW

IAD

4h 26m

1 stop

5:20 pm - 9:52 pm

IAD

YOW

4h 32m

1 stop

$329Air Canada

Sat, Jul 25 - Mon, Jul 27

10:25 am - 12:00 pm

YOW

DCA

1h 35mnonstop

12:40 pm - 2:11 pm

DCA

YOW

1h 31mnonstop

$329Air Canada

Wed, Aug 26 - Sat, Aug 29

10:40 am - 3:11 pm

YOW

IAD

4h 31m

1 stop

3:50 pm - 9:44 pm

IAD

YOW

5h 54m

1 stop

$335Porter Airlines

Thu, Jul 30 - Sun, Aug 2

7:30 pm - 9:14 pm

YOW

IAD

1h 44mnonstop

8:33 am - 4:38 pm

IAD

YOW

8h 05m

1 stop

$336United Airlines

Sat, Oct 10 - Sun, Oct 11

10:40 am - 3:10 pm

YOW

IAD

4h 30m

1 stop

3:50 pm - 9:44 pm

IAD

YOW

5h 54m

1 stop

$338Porter Airlines

Sun, Aug 23 - Sun, Aug 30

10:40 am - 3:10 pm

YOW

IAD

4h 30m

1 stop

6:09 pm - 2:55 pm

IAD

YOW

20h 46m

1 stop

$339Multiple Airlines

Sun, Aug 23 - Sun, Aug 30

4:00 pm - 7:23 am

YOW

IAD

15h 23m

2 stops

9:55 am - 3:10 pm

IAD

YOW

5h 15m

1 stop

$340United Airlines

Tue, Aug 4 - Wed, Aug 5

2:00 pm - 12:25 pm

YOW

BWI

46h 25m

2 stops

1:20 pm - 2:55 pm

BWI

YOW

25h 35m

1 stop

$369Multiple Airlines

Sun, Aug 23 - Sun, Aug 30

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

Our best Porter Airlines deals on Ottawa to Washington, D.C. flight tickets

Porter Airlines

Sep 5

YOW9:15 amOttawa

5h 55m

1 stop

IAD3:10 pmWashington, D.C. Dulles Intl

Sep 8

IAD3:50 pmWashington, D.C. Dulles Intl

5h 54m

1 stop

YOW9:44 pmOttawa

$329

Porter Airlines

Jul 30

YOW10:40 amOttawa

4h 31m

1 stop

IAD3:11 pmWashington, D.C. Dulles Intl

Aug 2

IAD3:50 pmWashington, D.C. Dulles Intl

5h 54m

1 stop

YOW9:44 pmOttawa

$335

Porter Airlines

Aug 23

YOW10:40 amOttawa

4h 30m

1 stop

IAD3:10 pmWashington, D.C. Dulles Intl

Aug 30

IAD3:50 pmWashington, D.C. Dulles Intl

5h 54m

1 stop

YOW9:44 pmOttawa

$338

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

Our best Air Canada deals on Ottawa to Washington, D.C. flight tickets

Air Canada

Jul 24

YOW12:15 pmOttawa

4h 26m

1 stop

IAD4:41 pmWashington, D.C. Dulles Intl

Jul 27

IAD5:20 pmWashington, D.C. Dulles Intl

4h 32m

1 stop

YOW9:52 pmOttawa

$328

Air Canada

Jul 25

YOW12:15 pmOttawa

4h 26m

1 stop

IAD4:41 pmWashington, D.C. Dulles Intl

Jul 27

IAD5:20 pmWashington, D.C. Dulles Intl

4h 32m

1 stop

YOW9:52 pmOttawa

$329

Air Canada

Aug 17

YOW6:00 pmOttawa

4h 31m

1 stop

DCA10:31 pmWashington, D.C. Reagan-National

Aug 24

DCA6:00 amWashington, D.C. Reagan-National

3h 39m

1 stop

YOW9:39 amOttawa

$330

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Fri 7/24

12:15 pm-4:41 pm

1 stop4h 26m

Washington, D.C. Dulles Intl

Sun 8/2

5:20 pm-9:52 pm

1 stop4h 32m

$328

OttawaWashington, D.C.

YOW - DCA

YOWDCA

Ottawa

Wed 7/22

3:10 pm-9:48 pm

1 stop6h 38m

Washington, D.C. Reagan-National

Sat 7/25

6:55 pm-12:45 am

1 stop5h 50m

$328

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Sat 7/25

12:15 pm-4:41 pm

1 stop4h 26m

Washington, D.C. Dulles Intl

Mon 7/27

5:20 pm-9:52 pm

1 stop4h 32m

$329

Quickest round-trip

OttawaWashington, D.C.

YOW - DCA

YOWDCA

Ottawa

Wed 8/26

10:25 am-12:00 pm

Nonstop1h 35m

Washington, D.C. Reagan-National

Sat 8/29

12:40 pm-2:11 pm

Nonstop1h 31m

$329

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Thu 7/30

10:40 am-3:11 pm

1 stop4h 31m

Washington, D.C. Dulles Intl

Sun 8/2

3:50 pm-9:44 pm

1 stop5h 54m

$335

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Sat 10/10

7:30 pm-9:14 pm

Nonstop1h 44m

Washington, D.C. Dulles Intl

Sun 10/11

8:33 am-4:38 pm

1 stop8h 05m

$336

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Sun 8/23

10:40 am-3:10 pm

1 stop4h 30m

Washington, D.C. Dulles Intl

Sun 8/30

3:50 pm-9:44 pm

1 stop5h 54m

$338

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Sun 8/23

10:40 am-3:10 pm

1 stop4h 30m

Washington, D.C. Dulles Intl

Sun 8/30

6:09 pm-2:55 pm

1 stop20h 46m

$339

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Tue 8/4

4:00 pm-7:23 am

2 stops15h 23m

Washington, D.C. Dulles Intl

Wed 8/5

9:55 am-3:10 pm

1 stop5h 15m

$340

OttawaBaltimore

YOW - BWI

YOWBWI

Ottawa

Sun 8/23

2:00 pm-12:25 pm

2 stops46h 25m

Baltimore/Washington

Sun 8/30

1:20 pm-2:55 pm

1 stop25h 35m

$369

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

Other information

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 $114. If you’re not able to fly to Washington, D.C. in August, then February is your next best option. Flight prices from Ottawa to Washington, D.C. during February average around $134.

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 $531. 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 $711.

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 $488. 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 $737. 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. Reagan-National 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?

No. A direct flight is the cheapest option for a flight between Ottawa to Washington, D.C..

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

As of July 2026, prices for Ottawa to Washington, D.C. flights are approximately 15% cheaper 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	$248
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 $248. The best round-trip flight deal from Ottawa to Washington, D.C. found on momondo in the last 72 hours is $353.

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

Frequently asked questions about flying from Ottawa to Washington, D.C.

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.?
As of July 2026, there are 2 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.?
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.?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Ottawa to Washington, D.C. is Embraer 175 (Enhanced Winglets) (34.51% of total bookings). The next most popular plane models are Canadair (Bombardier) Regional Jet CRJ-550 (34.37%), Canadair (Bombardier) Regional Jet 900 (12.31%), and Embraer 195 E2 (4.19%).
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 74% of all bookings. The subsequent popular airline is United Airlines at 26%.

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 Canada	PriceFrom $284	Free Cancellation	Rating 7.1 11,331 reviews		Search Air Canada flights
United Airlines	PriceFrom $344	Free Cancellation	Rating 7.4 9,979 reviews		Search United Airlines flights

United Airlines Flights From Ottawa to Washington, D.C.
Across 34 United Airlines flights from Ottawa to Washington, D.C. this week, the average price was $471, with the best United Airlines deals starting from $344 round-trip. 9,979 users have rated United Airlines on momondo, with an average score of 7.4/10.
Air Canada Flights From Ottawa to Washington, D.C.
$284 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 $401, however, with flight time and availability significantly affecting the price. Air Canada (7.1/10 from 11,331 user reviews) flies into Washington, D.C. from Ottawa 34 times in an average week so prices can vary.

Alexandria

National Harbor

Arlington

Gettysburg

Waldorf

Laurel

Woodbridge

Fredericksburg

Gaithersburg

Linthicum Heights

Rockville

Colonial Beach

Towson

Manassas

Silver Spring

Tysons

Springfield

Fairfax

Bethesda

Edgewood

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.

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

Washington, D.C. Reagan-National Airport

Washington, D.C. Dulles Intl Airport

Cheap flights from Ottawa to Washington, D.C. from $170

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 8/1. 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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Porter Airlines flights from Ottawa to Washington, D.C.

Our best Porter Airlines deals on Ottawa to Washington, D.C. flight tickets

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

Our best Air Canada deals on Ottawa to Washington, D.C. flight tickets

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Use the filters below to find and compare flights from Ottawa to Washington, D.C. that are best for you.

See travel insights to Washington, D.C. from

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

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.?

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

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

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

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

Can stopping save me money on Ottawa to Washington, D.C. flights?

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

What is the cheapest airline that flies from Ottawa to Washington, D.C.?

What airlines fly to Washington, D.C.?

How many flights depart from Ottawa to Washington, D.C. on average per day?

How many flights depart from Ottawa to Washington, D.C. on average per week?

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

Fastest flight time

Direct flights

Airports in Washington, D.C.

Frequently asked questions about flying 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

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

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

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

Why use momondo?

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

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Daily price changes in your inbox - only with Price Alerts.

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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.

Fly your favorite airline to Washington, D.C.

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Washington, D.C.

List of cabin classes available on flights landing in Washington, D.C.. Availability may vary depending on flight origin and airline.

Popular cities in the United States

Popular flights according to clicks in the last 7 days on momondo

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According to popular flight searches on momondo this year

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