What is the cheapest airline that flies from Seattle/Tacoma Intl to Ottawa?

WestJet and United Airlines are the most popular carriers operating from Seattle/Tacoma Intl to Ottawa

What airlines fly to Ottawa?

Air Canada, WestJet and United Airlines are the top three most popular airlines that fly to Ottawa from Seattle according to our data. Air Canada is the first choice among our users, with 59% of people opting to fly with this airline when traveling to Ottawa. Keep in mind that there are 5 different airlines that fly to Ottawa on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Ottawa Airport?

Prices for flights from Seattle/Tacoma Intl Airport to Ottawa Airport are updated daily.

How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Ottawa Airport?

The number of operators available for flights from Seattle/Tacoma Intl Airport to Ottawa Airport is 3 as of November 2026.

How old do you have to be to fly from Seattle/Tacoma Intl Airport to Ottawa Airport?

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 Seattle/Tacoma Intl Airport to Ottawa Airport.

What documentation or ID do you need to fly to Ottawa Airport?

The required travel and health documents for your Ottawa Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Ottawa Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$259 Cheap Flights from Seattle to Ottawa in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Seattle to Ottawa

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

2:30 pm - 2:30 pmSEA Seattle/Tacoma Intl-YOW Ottawa

21h 00m1 stop Calgary

6:10 am - 1:40 pmYOW Ottawa-SEA Seattle/Tacoma Intl

10h 30m1 stop Calgary

$398WestJet

Sun, Jan 31 - Tue, Feb 2

2:30 pm - 2:30 pmSEA Seattle/Tacoma Intl-YOW Ottawa

21h 00m1 stop Calgary

5:30 am - 1:40 pmYOW Ottawa-SEA Seattle/Tacoma Intl

35h 10m2 stops Toronto Pearson Intl Calgary

$434WestJet

Sun, Jan 31 - Tue, Feb 2

2:20 pm - 2:30 pmSEA Seattle/Tacoma Intl-YOW Ottawa

21h 10m1 stop Calgary

6:10 am - 1:40 pmYOW Ottawa-SEA Seattle/Tacoma Intl

10h 30m1 stop Calgary

$453WestJet

Sat, Dec 12 - Sun, Jan 10

3:44 pm - 11:33 amSEA Seattle/Tacoma Intl-YOW Ottawa

16h 49m2 stops Newark Toronto Island

6:10 am - 1:40 pmYOW Ottawa-SEA Seattle/Tacoma Intl

10h 30m1 stop Calgary

$491Multiple Airlines

Thu, Dec 10 - Sun, Jan 10

3:44 pm - 4:38 pmSEA Seattle/Tacoma Intl-YOW Ottawa

21h 54m2 stops Newark Toronto Island

6:10 am - 1:40 pmYOW Ottawa-SEA Seattle/Tacoma Intl

10h 30m1 stop Calgary

$504Multiple Airlines

Fri, Dec 11 - Sun, Jan 10

11:41 am - 1:10 pmSEA Seattle/Tacoma Intl-YOW Ottawa

22h 29m2 stops Phoenix Sky Harbor Intl Calgary

6:10 am - 1:40 pmYOW Ottawa-SEA Seattle/Tacoma Intl

10h 30m1 stop Calgary

$526Multiple Airlines

Fri, Dec 11 - Sun, Jan 10

10:10 am - 11:07 pmSEA Seattle/Tacoma Intl-YOW Ottawa

9h 57m2 stops Vancouver Intl Calgary

5:40 pm - 9:55 pmYOW Ottawa-SEA Seattle/Tacoma Intl

7h 15m1 stop Vancouver Intl

$556Air Canada

Mon, Mar 1 - Wed, Mar 3

7:45 am - 7:25 pmSEA Seattle/Tacoma Intl-YOW Ottawa

8h 40m1 stop Toronto Pearson Intl

5:40 pm - 9:55 pmYOW Ottawa-SEA Seattle/Tacoma Intl

7h 15m1 stop Vancouver Intl

$559Air Canada

Mon, Mar 1 - Wed, Mar 3

8:08 am - 7:27 pmSEA Seattle/Tacoma Intl-YOW Ottawa

8h 19m1 stop Washington, D.C. Dulles Intl

9:45 am - 9:02 pmYOW Ottawa-SEA Seattle/Tacoma Intl

14h 17m1 stop Washington, D.C. Dulles Intl

$565United Airlines

Sat, Jan 23 - Wed, Jan 27

10:52 am - 9:23 pmSEA Seattle/Tacoma Intl-YOW Ottawa

7h 31m1 stop Chicago O'Hare Intl

9:45 am - 9:59 pmYOW Ottawa-SEA Seattle/Tacoma Intl

15h 14m2 stops Washington, D.C. Dulles Intl Los Angeles

$570United Airlines

Sat, Jan 23 - Wed, Jan 27

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WestJet flights from Seattle to Ottawa

Our best WestJet deals on Seattle to Ottawa flight tickets

WestJet

Dec 12

SEA2:20 pmSeattle/Tacoma Intl

21h 10m

1 stop

YOW2:30 pmOttawa

Jan 10

YOW6:10 amOttawa

10h 30m

1 stop

SEA1:40 pmSeattle/Tacoma Intl

$453

WestJet

Jan 27

SEA2:30 pmSeattle/Tacoma Intl

21h 00m

1 stop

YOW2:30 pmOttawa

Jan 31

YOW6:10 amOttawa

10h 30m

1 stop

SEA1:40 pmSeattle/Tacoma Intl

$461

WestJet

Jan 23

SEA2:20 pmSeattle/Tacoma Intl

21h 10m

1 stop

YOW2:30 pmOttawa

Jan 27

YOW6:10 amOttawa

10h 30m

1 stop

SEA1:40 pmSeattle/Tacoma Intl

$480

Air Canada flights from Seattle to Ottawa

Our best Air Canada deals on Seattle to Ottawa flight tickets

Air Canada

Jan 23

SEA8:40 amSeattle/Tacoma Intl

11h 31m

2 stops

YOW11:11 pmOttawa

Jan 27

YOW7:50 amOttawa

13h 32m

2 stops

SEA6:22 pmSeattle/Tacoma Intl

$561

Air Canada

Feb 13

SEA7:45 amSeattle/Tacoma Intl

8h 45m

1 stop

YOW7:30 pmOttawa

Feb 18

YOW2:00 pmOttawa

9h 59m

1 stop

SEA8:59 pmSeattle/Tacoma Intl

$567

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleOttawa

SEA Seattle/Tacoma Intl - YOW Ottawa

SEAYOW

Seattle/Tacoma Intl

Sun 1/31

2:30 pm-2:30 pm

1 stop21h 00m

Ottawa

Tue 2/2

6:10 am-1:40 pm

1 stop10h 30m

$398

SeattleOttawa

SEA Seattle/Tacoma Intl - YOW Ottawa

SEAYOW

Seattle/Tacoma Intl

Sun 1/31

2:30 pm-2:30 pm

1 stop21h 00m

Ottawa

Tue 2/2

5:30 am-1:40 pm

2 stops35h 10m

$434

SeattleOttawa

SEA Seattle/Tacoma Intl - YOW Ottawa

SEAYOW

Seattle/Tacoma Intl

Sat 12/12

2:20 pm-2:30 pm

1 stop21h 10m

Ottawa

Sun 1/10

6:10 am-1:40 pm

1 stop10h 30m

$453

SeattleOttawa

SEA Seattle/Tacoma Intl - YOW Ottawa

SEAYOW

Seattle/Tacoma Intl

Thu 12/10

3:44 pm-11:33 am

2 stops16h 49m

Ottawa

Sun 1/10

6:10 am-1:40 pm

1 stop10h 30m

$491

SeattleOttawa

SEA Seattle/Tacoma Intl - YOW Ottawa

SEAYOW

Seattle/Tacoma Intl

Fri 12/11

3:44 pm-4:38 pm

2 stops21h 54m

Ottawa

Sun 1/10

6:10 am-1:40 pm

1 stop10h 30m

$504

SeattleOttawa

SEA Seattle/Tacoma Intl - YOW Ottawa

SEAYOW

Seattle/Tacoma Intl

Fri 12/11

11:41 am-1:10 pm

2 stops22h 29m

Ottawa

Sun 1/10

6:10 am-1:40 pm

1 stop10h 30m

$526

SeattleOttawa

SEA Seattle/Tacoma Intl - YOW Ottawa

SEAYOW

Seattle/Tacoma Intl

Mon 3/1

10:10 am-11:07 pm

2 stops9h 57m

Ottawa

Wed 3/3

5:40 pm-9:55 pm

1 stop7h 15m

$556

Quickest round-trip

SeattleOttawa

SEA Seattle/Tacoma Intl - YOW Ottawa

SEAYOW

Seattle/Tacoma Intl

Mon 3/1

7:45 am-7:25 pm

1 stop8h 40m

Ottawa

Wed 3/3

5:40 pm-9:55 pm

1 stop7h 15m

$559

SeattleOttawa

SEA Seattle/Tacoma Intl - YOW Ottawa

SEAYOW

Seattle/Tacoma Intl

Sat 1/23

8:08 am-7:27 pm

1 stop8h 19m

Ottawa

Wed 1/27

9:45 am-9:02 pm

1 stop14h 17m

$565

SeattleOttawa

SEA Seattle/Tacoma Intl - YOW Ottawa

SEAYOW

Seattle/Tacoma Intl

Sat 1/23

10:52 am-9:23 pm

1 stop7h 31m

Ottawa

Wed 1/27

9:45 am-9:59 pm

2 stops15h 14m

$570

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 Seattle to Ottawa

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 typical price of a round-trip flight between Seattle and Ottawa?

Prices are currently low for flights on this route.

Typical prices usually range from $675 to $977.
The lowest price recently found on this route was $453.

What is the cheapest month to fly to Ottawa?

In general, March is the cheapest month to fly from Seattle to Ottawa. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $0. The month of February is another great option to travel to Ottawa, with average flight prices from Seattle averaging around $394.

Can stopping save me money on Seattle to Ottawa flights?

You could potentially save up to 11% on your flight if you consider stops on a Seattle to Ottawa flight.

How have Seattle to Ottawa flight prices changed over time?

When to book flights from Seattle to Ottawa

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Ottawa according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Seattle to Ottawa (SEA to YOW) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Ottawa

Best Price Found	$259
Fastest flight time	8h 45m
Direct flights	None

The best one-way flight to Ottawa from Seattle in the past 72 hours is $259. The best round-trip flight deal from Seattle to Ottawa found on momondo in the last 72 hours is $398.

The fastest flight from Seattle to Ottawa takes 8h 45m

There are no direct flights from Seattle to Ottawa. There are no popular flight routes from Seattle to Ottawa.

Search flight deals

Frequently asked questions about flying from Seattle to Ottawa

How far is Seattle/Tacoma Intl to Ottawa by plane?
Seattle/Tacoma Intl and Ottawa are 2187.8 mi apart from one another. 8h 45m is a normal flight duration for this route.
When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Ottawa Airport?
Prices for flights from Seattle/Tacoma Intl Airport to Ottawa Airport are updated daily.
How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Ottawa Airport?
The number of operators available for flights from Seattle/Tacoma Intl Airport to Ottawa Airport is 3 as of November 2026.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to Ottawa Airport?
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 Seattle/Tacoma Intl Airport to Ottawa Airport.
What documentation or ID do you need to fly to Ottawa Airport?
The required travel and health documents for your Ottawa Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Ottawa Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from Seattle to Ottawa?
momondo data reveals that the most frequently booked airline on the route from Seattle to Ottawa is Air Canada, representing 49% of all bookings. The subsequent popular airlines are WestJet at 27% and United Airlines at 24%.

Best airlines flying from Seattle to Ottawa

Compare and see reviews for airlines that fly from Seattle to Ottawa with momondo

Airline	Rating	Free Cancellation	Price
WestJet	PriceFrom $266	Free Cancellation	Rating 7.2 3,437 reviews	Search WestJet flights
Air Canada	PriceFrom $307	Free Cancellation	Rating 7.1 11,874 reviews	Search Air Canada flights
United Airlines	PriceFrom $312	Free Cancellation	Rating 7.3 10,469 reviews	Search United Airlines flights

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Pembroke

Calabogie

Prescott

Petawawa

Smiths Falls

Perth

Wakefield

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Seattle to Ottawa for you.

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

Flights from Seattle to Ottawa 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 Seattle to Ottawa?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Seattle to Ottawa.

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

If you are not ready to book a flight from Seattle to Ottawa now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Ottawa and let you know when they change.

An easier way to manage your Ottawa trip

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Cheap flights from Seattle to Ottawa from $259

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Ottawa departing on 12/8. 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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WestJet flights from Seattle to Ottawa

Our best WestJet deals on Seattle to Ottawa flight tickets

Air Canada flights from Seattle to Ottawa

Our best Air Canada deals on Seattle to Ottawa flight tickets

momondo Fare Finder

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See travel insights to Ottawa from

How to get the cheapest flight ticket from Seattle to Ottawa

What is the typical price of a round-trip flight between Seattle and Ottawa?

What is the cheapest month to fly to Ottawa?

Can stopping save me money on Seattle to Ottawa flights?

How have Seattle to Ottawa flight prices changed over time?

What is the cheapest airline that flies from Seattle/Tacoma Intl to Ottawa?

What airlines fly to Ottawa?

When to book flights from Seattle to Ottawa

Cheap Seattle to Ottawa (SEA to YOW) flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from Seattle to Ottawa

Best airlines flying from Seattle to Ottawa

Compare and see reviews for airlines that fly from Seattle to Ottawa with momondo

Traveling to a place near Ottawa?

Why use momondo?

An easier way to manage your Ottawa 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 Canada

Airports servicing Ontario

Fly your favorite airline to Ottawa

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

Cabin classes currently available on flights to Ottawa

List of cabin classes available on flights landing in Ottawa. Availability may vary depending on flight origin and airline.

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