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 5 per day as of May 2026. The most frequent departure time is 10:00AM, with 62% 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 74% 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 36 per week as of May 2026. The most frequent departure day is Mon, with 28% 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 May 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.

$171 Cheap Flights from Ottawa to Washington, D.C. in 2026

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

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 - 4:15 pm

YOW

IAD

4h 00m

1 stop

5:15 pm - 9:51 pm

IAD

YOW

4h 36m

1 stop

$316Air Canada

Wed, Nov 4 - Mon, Nov 9

10:40 am - 3:10 pm

YOW

IAD

4h 30m

1 stop

11:25 am - 5:54 pm

IAD

YOW

6h 29m

1 stop

$324Porter Airlines

Thu, Sep 17 - Sun, Sep 20

12:15 pm - 4:12 pm

YOW

IAD

3h 57m

1 stop

5:15 pm - 9:52 pm

IAD

YOW

4h 37m

1 stop

$326Air Canada

Tue, Oct 6 - Sun, Oct 11

10:25 am - 12:00 pm

YOW

DCA

1h 35mnonstop

12:40 pm - 2:10 pm

DCA

YOW

1h 30mnonstop

$326Air Canada

Tue, Oct 6 - Sun, Oct 11

10:40 am - 3:10 pm

YOW

IAD

4h 30m

1 stop

11:25 am - 5:54 pm

IAD

YOW

6h 29m

1 stop

$327Porter Airlines

Fri, Jul 17 - Mon, Jul 27

10:40 am - 3:10 pm

YOW

IAD

4h 30m

1 stop

3:50 pm - 9:44 pm

IAD

YOW

5h 54m

1 stop

$329Porter Airlines

Wed, Jul 22 - Tue, Jul 28

11:15 am - 3:40 pm

YOW

DCA

4h 25m

1 stop

12:40 pm - 2:10 pm

DCA

YOW

1h 30mnonstop

$329Air Canada

Tue, Oct 6 - Sun, Oct 11

10:40 am - 3:10 pm

YOW

IAD

4h 30m

1 stop

11:25 am - 5:54 pm

IAD

YOW

6h 29m

1 stop

$330Porter Airlines

Thu, Sep 24 - Mon, Sep 28

10:40 am - 3:10 pm

YOW

IAD

4h 30m

1 stop

3:50 pm - 8:04 pm

IAD

YOW

4h 14m

1 stop

$332Porter Airlines

Wed, Jul 1 - Mon, Jul 6

7:00 am - 12:13 pm

YOW

BWI

29h 13m

1 stop

9:30 pm - 8:05 pm

BWI

YOW

22h 35m

2 stops

$449Multiple Airlines

Mon, Jun 15 - Mon, Jun 22

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 17

YOW10:40 amOttawa

4h 30m

1 stop

IAD3:10 pmWashington, D.C. Dulles Intl

Sep 20

IAD11:25 amWashington, D.C. Dulles Intl

6h 29m

1 stop

YOW5:54 pmOttawa

$324

Porter Airlines

Jul 17

YOW10:40 amOttawa

4h 30m

1 stop

IAD3:10 pmWashington, D.C. Dulles Intl

Jul 27

IAD11:25 amWashington, D.C. Dulles Intl

6h 29m

1 stop

YOW5:54 pmOttawa

$327

Porter Airlines

Jul 22

YOW10:40 amOttawa

4h 30m

1 stop

IAD3:10 pmWashington, D.C. Dulles Intl

Jul 28

IAD3:50 pmWashington, D.C. Dulles Intl

5h 54m

1 stop

YOW9:44 pmOttawa

$329

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

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

Air Canada

Nov 4

YOW12:15 pmOttawa

4h 00m

1 stop

IAD4:15 pmWashington, D.C. Dulles Intl

Nov 9

IAD5:15 pmWashington, D.C. Dulles Intl

4h 36m

1 stop

YOW9:51 pmOttawa

$316

Air Canada

Nov 4

YOW10:30 amOttawa

1h 49m

DCA12:19 pmWashington, D.C. Reagan-National

Nov 9

DCA11:00 amWashington, D.C. Reagan-National

4h 57m

1 stop

YOW3:57 pmOttawa

$320

Air Canada

Nov 4

YOW5:45 amOttawa

4h 36m

1 stop

DCA10:21 amWashington, D.C. Reagan-National

Nov 9

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

5h 27m

1 stop

YOW11:27 amOttawa

$323

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Wed 11/4

12:15 pm-4:15 pm

1 stop4h 00m

Washington, D.C. Dulles Intl

Mon 11/9

5:15 pm-9:51 pm

1 stop4h 36m

$316

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Thu 9/17

10:40 am-3:10 pm

1 stop4h 30m

Washington, D.C. Dulles Intl

Sun 9/20

11:25 am-5:54 pm

1 stop6h 29m

$324

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Tue 10/6

12:15 pm-4:12 pm

1 stop3h 57m

Washington, D.C. Dulles Intl

Sun 10/11

5:15 pm-9:52 pm

1 stop4h 37m

$326

Quickest round-trip

OttawaWashington, D.C.

YOW - DCA

YOWDCA

Ottawa

Tue 10/6

10:25 am-12:00 pm

Nonstop1h 35m

Washington, D.C. Reagan-National

Sun 10/11

12:40 pm-2:10 pm

Nonstop1h 30m

$326

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Fri 7/17

10:40 am-3:10 pm

1 stop4h 30m

Washington, D.C. Dulles Intl

Mon 7/27

11:25 am-5:54 pm

1 stop6h 29m

$327

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Wed 7/22

10:40 am-3:10 pm

1 stop4h 30m

Washington, D.C. Dulles Intl

Tue 7/28

3:50 pm-9:44 pm

1 stop5h 54m

$329

OttawaWashington, D.C.

YOW - DCA

YOWDCA

Ottawa

Tue 10/6

11:15 am-3:40 pm

1 stop4h 25m

Washington, D.C. Reagan-National

Sun 10/11

12:40 pm-2:10 pm

Nonstop1h 30m

$329

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Thu 9/24

10:40 am-3:10 pm

1 stop4h 30m

Washington, D.C. Dulles Intl

Mon 9/28

11:25 am-5:54 pm

1 stop6h 29m

$330

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Wed 7/1

10:40 am-3:10 pm

1 stop4h 30m

Washington, D.C. Dulles Intl

Mon 7/6

3:50 pm-8:04 pm

1 stop4h 14m

$332

OttawaBaltimore

YOW - BWI

YOWBWI

Ottawa

Mon 6/15

7:00 am-12:13 pm

1 stop29h 13m

Baltimore/Washington

Mon 6/22

9:30 pm-8:05 pm

2 stops22h 35m

$449

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 $520. 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 $652.

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 $698. 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 May 2026, prices for Ottawa to Washington, D.C. flights are approximately 45% 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	$216
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 $216. The best round-trip flight deal from Ottawa to Washington, D.C. found on momondo in the last 72 hours is $395.

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 May 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) (28.59% of total bookings). The next most popular plane models are Canadair (Bombardier) Regional Jet CRJ-550 (28.16%), Canadair (Bombardier) Regional Jet 900 (12.48%), and Embraer 195 E2 (11.32%).
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 11,062 reviews		Search Air Canada flights
United Airlines	PriceFrom $338	Free Cancellation	Rating 7.4 9,734 reviews		Search United Airlines flights

United Airlines Flights From Ottawa to Washington, D.C.
Across 18 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. 9,734 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 $409, however, with flight time and availability significantly affecting the price. Air Canada (7.1/10 from 11,062 user reviews) flies into Washington, D.C. from Ottawa 18 times in an average week so prices can vary.

Alexandria

National Harbor

Gettysburg

Arlington

Waldorf

Woodbridge

Laurel

Gaithersburg

Colonial Beach

Fredericksburg

Silver Spring

Towson

Rockville

Manassas

Linthicum Heights

Tysons

Bethesda

Springfield

Fairfax

College Park

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

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Start using Trips

Find my bookings

Get notified when prices go down

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

1 adult

Thu 6/18

Thu 6/25

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States

Nearby airports

Airlines

Cabin classes

Other United States destinations

Other flights from Ottawa

Complete your trip

Feeling lucky

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 $191

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 7/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

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

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

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

momondo Fare Finder

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

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

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

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.

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

Fly to other destinations from Ottawa

According to popular flight searches on momondo this year

Complete your trip to Washington, D.C.

Explore popular destinations other users love

According to popular flight searches on momondo this year