What is the cheapest airline that flies from Ottawa to Washington?

WestJet, United Airlines, and American Airlines are the most popular carriers operating from Ottawa to Washington

What airlines fly to State of Washington?

Air Canada, WestJet and United Airlines are the top three most popular airlines that fly to State of Washington from Ottawa according to our data. Air Canada is the first choice among our users, with 69% of people opting to fly with this airline when traveling to State of Washington. Keep in mind that there are 3 different airlines that fly to State of Washington on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Ottawa Airport to Washington?

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

How many operators does momondo search for flights from Ottawa Airport to Washington?

As of March 2026, there are 3 operators available to choose from for flights from Ottawa Airport to Washington.

How old do you have to be to fly from Ottawa Airport to Washington?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ottawa Airport to Washington.

What documentation or ID do you need to fly to Washington?

The necessary travel and health documents for your Washington trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$213 Cheap Flights from Ottawa to Washington in 2026

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Find the cheapest flights from Ottawa to Washington

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

5:40 am - 2:19 pm

YOW

SEA

11h 39m

2 stops

3:20 pm - 12:30 pm

SEA

YOW

18h 10m

2 stops

$315WestJet

Tue, Apr 21 - Sat, Apr 25

5:40 am - 2:19 pm

YOW

SEA

11h 39m

2 stops

3:20 pm - 3:20 pm

SEA

YOW

21h 00m

1 stop

$320WestJet

Tue, Apr 21 - Sat, Apr 25

1:20 pm - 6:45 pm

YOW

SEA

8h 25m

1 stop

7:35 pm - 5:35 am

SEA

YOW

7h 00m

1 stop

$323WestJet

Fri, May 29 - Fri, Jun 5

5:40 am - 2:19 pm

YOW

SEA

11h 39m

2 stops

3:10 pm - 12:39 am

SEA

YOW

30h 29m

2 stops

$327WestJet

Wed, Apr 8 - Tue, Apr 14

1:20 pm - 6:45 pm

YOW

SEA

8h 25m

1 stop

7:35 pm - 5:35 am

SEA

YOW

7h 00m

1 stop

$329WestJet

Tue, Apr 28 - Tue, May 5

1:20 pm - 6:45 pm

YOW

SEA

8h 25m

1 stop

10:30 am - 12:20 am

SEA

YOW

10h 50m

2 stops

$336WestJet

Tue, Apr 28 - Tue, May 5

1:20 pm - 6:45 pm

YOW

SEA

8h 25m

1 stop

7:35 pm - 5:35 am

SEA

YOW

7h 00m

1 stop

$337WestJet

Thu, May 28 - Tue, Jun 2

5:40 am - 2:19 pm

YOW

SEA

11h 39m

2 stops

3:10 pm - 12:39 am

SEA

YOW

30h 29m

2 stops

$338WestJet

Thu, Apr 16 - Sun, Apr 19

5:40 am - 2:19 pm

YOW

SEA

11h 39m

2 stops

3:10 pm - 12:39 am

SEA

YOW

30h 29m

2 stops

$339WestJet

Wed, Apr 8 - Tue, Apr 14

6:55 am - 6:45 pm

YOW

SEA

14h 50m

2 stops

10:30 am - 12:20 am

SEA

YOW

10h 50m

2 stops

$342WestJet

Fri, May 1 - Sun, May 3

United Airlines flights from Ottawa to State of Washington

Our best United Airlines deals on Ottawa to State of Washington flight tickets

United Airlines

Apr 16

YOW5:25 pmOttawa

8h 17m

1 stop

SEA10:42 pmSeattle/Tacoma Intl

Apr 19

SEA10:35 pmSeattle/Tacoma Intl

15h 32m

1 stop

YOW5:07 pmOttawa

$397

United Airlines

Apr 9

YOW5:25 pmOttawa

8h 17m

1 stop

SEA10:42 pmSeattle/Tacoma Intl

Apr 13

SEA11:35 pmSeattle/Tacoma Intl

14h 03m

2 stops

YOW4:38 pmOttawa

$398

United Airlines

Apr 8

YOW5:50 pmOttawa

8h 56m

1 stop

SEA11:46 pmSeattle/Tacoma Intl

Apr 14

SEA8:00 amSeattle/Tacoma Intl

7h 55m

1 stop

YOW6:55 pmOttawa

$400

WestJet flights from Ottawa to State of Washington

Our best WestJet deals on Ottawa to State of Washington flight tickets

WestJet

Apr 21

YOW5:40 amOttawa

11h 39m

2 stops

SEA2:19 pmSeattle/Tacoma Intl

Apr 25

SEA3:20 pmSeattle/Tacoma Intl

18h 10m

2 stops

YOW12:30 pmOttawa

$315

WestJet

Apr 21

YOW5:40 amOttawa

11h 39m

2 stops

SEA2:19 pmSeattle/Tacoma Intl

Apr 25

SEA3:20 pmSeattle/Tacoma Intl

21h 00m

1 stop

YOW3:20 pmOttawa

$320

WestJet

May 29

YOW1:20 pmOttawa

8h 25m

1 stop

SEA6:45 pmSeattle/Tacoma Intl

Jun 5

SEA7:35 pmSeattle/Tacoma Intl

7h 00m

1 stop

YOW5:35 amOttawa

$323

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Tue 4/21

5:40 am-2:19 pm

2 stops11h 39m

Seattle/Tacoma Intl

Sat 4/25

3:20 pm-12:30 pm

2 stops18h 10m

$315

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Tue 4/21

5:40 am-2:19 pm

2 stops11h 39m

Seattle/Tacoma Intl

Sat 4/25

3:20 pm-3:20 pm

1 stop21h 00m

$320

Quickest round-trip

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Fri 5/29

1:20 pm-6:45 pm

1 stop8h 25m

Seattle/Tacoma Intl

Fri 6/5

7:35 pm-5:35 am

1 stop7h 00m

$323

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Wed 4/8

5:40 am-2:19 pm

2 stops11h 39m

Seattle/Tacoma Intl

Tue 4/14

3:10 pm-12:39 am

2 stops30h 29m

$327

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Tue 4/28

1:20 pm-6:45 pm

1 stop8h 25m

Seattle/Tacoma Intl

Tue 5/5

7:35 pm-5:35 am

1 stop7h 00m

$329

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Tue 4/28

1:20 pm-6:45 pm

1 stop8h 25m

Seattle/Tacoma Intl

Tue 5/5

10:30 am-12:20 am

2 stops10h 50m

$336

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Thu 5/28

1:20 pm-6:45 pm

1 stop8h 25m

Seattle/Tacoma Intl

Tue 6/2

7:35 pm-5:35 am

1 stop7h 00m

$337

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Thu 4/16

5:40 am-2:19 pm

2 stops11h 39m

Seattle/Tacoma Intl

Sun 4/19

3:10 pm-12:39 am

2 stops30h 29m

$338

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Wed 4/8

5:40 am-2:19 pm

2 stops11h 39m

Seattle/Tacoma Intl

Tue 4/14

3:10 pm-12:39 am

2 stops30h 29m

$339

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Fri 5/1

6:55 am-6:45 pm

2 stops14h 50m

Seattle/Tacoma Intl

Sun 5/3

10:30 am-12:20 am

2 stops10h 50m

$342

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 State of Washington

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

What is the cheapest month to fly to State of Washington?

The month of January is, on average, the cheapest month to fly to State of Washington from Ottawa, with most prices found around $285. If you aren’t able to travel to State of Washington during the month of January, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $337.

How far in advance should I book a flight to State of Washington?

You are more likely to see cheaper flights to State of Washington from Ottawa when booking weeks ahead of your departure date. In general, you can expect to find flights to State of Washington for around $407 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to State of Washington from Ottawa for as low as $302 on momondo.

Can stopping save me money on Ottawa to State of Washington flights?

You could potentially save up to 47% on your flight if you consider stops on a Ottawa to State of Washington flight.

Cheap Ottawa to State of Washington flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ottawa to State of Washington

Fastest flight time	8h 17m
Direct flights	None

The fastest flight from Ottawa to State of Washington takes 8h 17m

There are no direct flights from Ottawa to State of Washington. There are no popular flight routes from Ottawa to State of Washington.

Search flight deals

When did momondo last update prices for flights from Ottawa Airport to Washington?
Prices for flights from Ottawa Airport to Washington were last updated today.
How many operators does momondo search for flights from Ottawa Airport to Washington?
As of March 2026, there are 3 operators available to choose from for flights from Ottawa Airport to Washington.
How old do you have to be to fly from Ottawa Airport to Washington?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ottawa Airport to Washington.
What documentation or ID do you need to fly to Washington?
The necessary travel and health documents for your Washington trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Ottawa to State of Washington

Compare and see reviews for airlines that fly from Ottawa to State of Washington with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $275	Free Cancellation	Rating 7.4 9,462 reviews	Search United Airlines flights
WestJet	PriceFrom $277	Free Cancellation	Rating 7.2 3,300 reviews	Search WestJet flights
Air Canada	PriceFrom $304	Free Cancellation	Rating 7.1 10,835 reviews	Search Air Canada flights

Why use momondo?

Why should I use momondo to find a flight deal from Ottawa to Washington?

Finding the right flight to Washington from Ottawa is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Washington quick and easy, saving you time and money.

Can I find flights from Ottawa to Washington with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Ottawa to Washington flights to just show those with flexible booking policies.

How can momondo help me find flights from Ottawa to Washington?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Washington from Ottawa.

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

Price alerts on flights to Washington from Ottawa 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.