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

WestJet is the most popular carrier operating from Seattle/Tacoma Intl to Ottawa

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 refresh daily.

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 travel and health documents required for your trip to Ottawa 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 Ottawa Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

C$ 165 Cheap Flights from Seattle to Ottawa in 2026/27

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.

7:35 p.m. - 5:35 a.m.SEA Seattle/Tacoma Intl-YOW Ottawa

7h 00m1 stop Calgary

6:10 a.m. - 2:40 p.m.YOW Ottawa-SEA Seattle/Tacoma Intl

11h 30m1 stop Calgary

C$ 478WestJet

Tue, 20 Oct - Tue, 27 Oct

8:02 a.m. - 5:35 a.m.SEA Seattle/Tacoma Intl-YOW Ottawa

18h 33m1 stop Calgary

6:55 a.m. - 6:45 p.m.YOW Ottawa-SEA Seattle/Tacoma Intl

14h 50m2 stops Toronto Pearson Intl Calgary

C$ 487Multiple Airlines

Sat, 17 Oct - Sat, 24 Oct

8:02 a.m. - 12:25 a.m.SEA Seattle/Tacoma Intl-YOW Ottawa

13h 23m2 stops Calgary Toronto Pearson Intl

6:55 a.m. - 6:45 p.m.YOW Ottawa-SEA Seattle/Tacoma Intl

14h 50m2 stops Toronto Pearson Intl Calgary

C$ 500Multiple Airlines

Sat, 17 Oct - Sat, 24 Oct

2:30 p.m. - 2:30 p.m.SEA Seattle/Tacoma Intl-YOW Ottawa

21h 00m1 stop Calgary

6:10 a.m. - 1:40 p.m.YOW Ottawa-SEA Seattle/Tacoma Intl

10h 30m1 stop Calgary

C$ 521WestJet

Mon, 30 Nov - Fri, 29 Jan

7:35 p.m. - 5:35 a.m.SEA Seattle/Tacoma Intl-YOW Ottawa

7h 00m1 stop Calgary

6:10 a.m. - 6:31 p.m.YOW Ottawa-SEA Seattle/Tacoma Intl

15h 21m2 stops Calgary Vancouver Intl

C$ 530Multiple Airlines

Wed, 21 Oct - Wed, 28 Oct

2:30 p.m. - 12:01 a.m.SEA Seattle/Tacoma Intl-YOW Ottawa

30h 31m1 stop Calgary

6:10 a.m. - 1:40 p.m.YOW Ottawa-SEA Seattle/Tacoma Intl

10h 30m1 stop Calgary

C$ 533WestJet

Sun, 8 Nov - Tue, 17 Nov

7:35 p.m. - 5:35 a.m.SEA Seattle/Tacoma Intl-YOW Ottawa

7h 00m1 stop Calgary

6:55 p.m. - 2:40 p.m.YOW Ottawa-SEA Seattle/Tacoma Intl

22h 45m1 stop Calgary

C$ 534Multiple Airlines

Fri, 23 Oct - Mon, 26 Oct

2:30 p.m. - 2:30 p.m.SEA Seattle/Tacoma Intl-YOW Ottawa

21h 00m1 stop Calgary

6:10 a.m. - 1:40 p.m.YOW Ottawa-SEA Seattle/Tacoma Intl

10h 30m1 stop Calgary

C$ 537WestJet

Tue, 1 Dec - Fri, 4 Dec

7:35 p.m. - 5:35 a.m.SEA Seattle/Tacoma Intl-YOW Ottawa

7h 00m1 stop Calgary

6:10 a.m. - 4:26 p.m.YOW Ottawa-SEA Seattle/Tacoma Intl

13h 16m2 stops Calgary Vancouver Intl

C$ 547Multiple Airlines

Tue, 20 Oct - Tue, 27 Oct

10:10 a.m. - 12:01 a.m.SEA Seattle/Tacoma Intl-YOW Ottawa

10h 51m2 stops Vancouver Intl Calgary

6:10 a.m. - 1:40 p.m.YOW Ottawa-SEA Seattle/Tacoma Intl

10h 30m1 stop Calgary

C$ 551Multiple Airlines

Tue, 3 Nov - Tue, 10 Nov

Cheap last-minute flights

Enter your travel dates to find the best prices.

7:35 p.m. - 5:35 a.m.SEA Seattle/Tacoma Intl-YOW Ottawa

7h 00m1 stop Calgary

7:20 a.m. - 6:45 p.m.YOW Ottawa-SEA Seattle/Tacoma Intl

14h 25m1 stop Calgary

C$ 828WestJet

Tue, 29 Sep - Tue, 20 Oct

7:35 p.m. - 5:35 a.m.SEA Seattle/Tacoma Intl-YOW Ottawa

7h 00m1 stop Calgary

7:20 a.m. - 6:45 p.m.YOW Ottawa-SEA Seattle/Tacoma Intl

14h 25m1 stop Calgary

C$ 833WestJet

Tue, 29 Sep - Wed, 21 Oct

7:35 p.m. - 5:35 a.m.SEA Seattle/Tacoma Intl-YOW Ottawa

7h 00m1 stop Calgary

7:20 a.m. - 6:45 p.m.YOW Ottawa-SEA Seattle/Tacoma Intl

14h 25m1 stop Calgary

C$ 833WestJet

Tue, 29 Sep - Tue, 20 Oct

10:30 a.m. - 5:35 a.m.SEA Seattle/Tacoma Intl-YOW Ottawa

16h 05m1 stop Calgary

8:15 p.m. - 9:40 a.m.YOW Ottawa-SEA Seattle/Tacoma Intl

16h 25m1 stop Calgary

C$ 847WestJet

Tue, 29 Sep - Tue, 20 Oct

3:35 p.m. - 5:35 a.m.SEA Seattle/Tacoma Intl-YOW Ottawa

11h 00m1 stop Calgary

8:15 p.m. - 9:40 a.m.YOW Ottawa-SEA Seattle/Tacoma Intl

16h 25m1 stop Calgary

C$ 854Multiple Airlines

Tue, 29 Sep - Tue, 20 Oct

10:30 a.m. - 12:25 a.m.SEA Seattle/Tacoma Intl-YOW Ottawa

10h 55m2 stops Calgary Toronto Pearson Intl

8:15 p.m. - 9:40 a.m.YOW Ottawa-SEA Seattle/Tacoma Intl

16h 25m1 stop Calgary

C$ 857Multiple Airlines

Tue, 29 Sep - Wed, 21 Oct

10:30 a.m. - 12:25 a.m.SEA Seattle/Tacoma Intl-YOW Ottawa

10h 55m2 stops Calgary Toronto Pearson Intl

8:15 p.m. - 9:40 a.m.YOW Ottawa-SEA Seattle/Tacoma Intl

16h 25m1 stop Calgary

C$ 857Multiple Airlines

Tue, 29 Sep - Tue, 20 Oct

5:30 p.m. - 12:30 p.m.SEA Seattle/Tacoma Intl-YOW Ottawa

16h 00m2 stops Vancouver Intl Edmonton

7:20 a.m. - 6:45 p.m.YOW Ottawa-SEA Seattle/Tacoma Intl

14h 25m1 stop Calgary

C$ 868WestJet

Tue, 29 Sep - Tue, 20 Oct

5:30 p.m. - 12:30 p.m.SEA Seattle/Tacoma Intl-YOW Ottawa

16h 00m2 stops Vancouver Intl Edmonton

7:20 a.m. - 6:45 p.m.YOW Ottawa-SEA Seattle/Tacoma Intl

14h 25m1 stop Calgary

C$ 878WestJet

Tue, 29 Sep - Tue, 20 Oct

5:30 p.m. - 12:30 p.m.SEA Seattle/Tacoma Intl-YOW Ottawa

16h 00m2 stops Vancouver Intl Edmonton

8:15 p.m. - 9:40 a.m.YOW Ottawa-SEA Seattle/Tacoma Intl

16h 25m1 stop Calgary

C$ 885WestJet

Tue, 29 Sep - Tue, 20 Oct

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WestJet flights from Seattle to Ottawa

Our best WestJet deals on Seattle to Ottawa flight tickets

WestJet

20 Oct

SEA7:35 p.m.Seattle/Tacoma Intl

7h 00m

1 stop

YOW5:35 a.m.Ottawa

27 Oct

YOW6:10 a.m.Ottawa

11h 30m

1 stop

SEA2:40 p.m.Seattle/Tacoma Intl

C$ 478

WestJet

30 Nov

SEA2:30 p.m.Seattle/Tacoma Intl

21h 00m

1 stop

YOW2:30 p.m.Ottawa

29 Jan

YOW6:10 a.m.Ottawa

10h 30m

1 stop

SEA1:40 p.m.Seattle/Tacoma Intl

C$ 521

WestJet

8 Nov

SEA2:30 p.m.Seattle/Tacoma Intl

30h 31m

1 stop

YOW12:01 a.m.Ottawa

17 Nov

YOW6:10 a.m.Ottawa

10h 30m

1 stop

SEA1:40 p.m.Seattle/Tacoma Intl

C$ 533

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

SeattleOttawa

SEA Seattle/Tacoma Intl - YOW Ottawa

SEAYOW

Seattle/Tacoma Intl

Tue 20/10

7:35 p.m.-5:35 a.m.

1 stop7h 00m

Ottawa

Tue 27/10

6:10 a.m.-2:40 p.m.

1 stop11h 30m

C$ 478

SeattleOttawa

SEA Seattle/Tacoma Intl - YOW Ottawa

SEAYOW

Seattle/Tacoma Intl

Sat 17/10

8:02 a.m.-5:35 a.m.

1 stop18h 33m

Ottawa

Sat 24/10

6:55 a.m.-6:45 p.m.

2 stops14h 50m

C$ 487

SeattleOttawa

SEA Seattle/Tacoma Intl - YOW Ottawa

SEAYOW

Seattle/Tacoma Intl

Sat 17/10

8:02 a.m.-12:25 a.m.

2 stops13h 23m

Ottawa

Sat 24/10

6:55 a.m.-6:45 p.m.

2 stops14h 50m

C$ 500

SeattleOttawa

SEA Seattle/Tacoma Intl - YOW Ottawa

SEAYOW

Seattle/Tacoma Intl

Mon 30/11

2:30 p.m.-2:30 p.m.

1 stop21h 00m

Ottawa

Fri 29/1

6:10 a.m.-1:40 p.m.

1 stop10h 30m

C$ 521

SeattleOttawa

SEA Seattle/Tacoma Intl - YOW Ottawa

SEAYOW

Seattle/Tacoma Intl

Wed 21/10

7:35 p.m.-5:35 a.m.

1 stop7h 00m

Ottawa

Wed 28/10

6:10 a.m.-6:31 p.m.

2 stops15h 21m

C$ 530

SeattleOttawa

SEA Seattle/Tacoma Intl - YOW Ottawa

SEAYOW

Seattle/Tacoma Intl

Sun 8/11

2:30 p.m.-12:01 a.m.

1 stop30h 31m

Ottawa

Tue 17/11

6:10 a.m.-1:40 p.m.

1 stop10h 30m

C$ 533

SeattleOttawa

SEA Seattle/Tacoma Intl - YOW Ottawa

SEAYOW

Seattle/Tacoma Intl

Fri 23/10

7:35 p.m.-5:35 a.m.

1 stop7h 00m

Ottawa

Mon 26/10

6:55 p.m.-2:40 p.m.

1 stop22h 45m

C$ 534

SeattleOttawa

SEA Seattle/Tacoma Intl - YOW Ottawa

SEAYOW

Seattle/Tacoma Intl

Tue 1/12

2:30 p.m.-2:30 p.m.

1 stop21h 00m

Ottawa

Fri 4/12

6:10 a.m.-1:40 p.m.

1 stop10h 30m

C$ 537

SeattleOttawa

SEA Seattle/Tacoma Intl - YOW Ottawa

SEAYOW

Seattle/Tacoma Intl

Tue 20/10

7:35 p.m.-5:35 a.m.

1 stop7h 00m

Ottawa

Tue 27/10

6:10 a.m.-4:26 p.m.

2 stops13h 16m

C$ 547

SeattleOttawa

SEA Seattle/Tacoma Intl - YOW Ottawa

SEAYOW

Seattle/Tacoma Intl

Tue 3/11

10:10 a.m.-12:01 a.m.

2 stops10h 51m

Ottawa

Tue 10/11

6:10 a.m.-1:40 p.m.

1 stop10h 30m

C$ 551

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 C$ 531 to C$ 867.
The lowest price recently found on this route was C$ 478.

What is the cheapest month to fly to Ottawa?

The month of March is, on average, the cheapest month to fly to Ottawa from Seattle, with most prices found around C$ 0. If you aren’t able to travel to Ottawa during the month of March, then flying in April is also cheap. Prices for this month can be found on momondo for an average of C$ 499.

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	C$ 165
Fastest flight time	7h 00m
Direct flights	None

The best one-way flight to Ottawa from Seattle in the past 72 hours is C$ 165. The best round-trip flight deal from Seattle to Ottawa found on momondo in the last 72 hours is C$ 478.

The fastest flight from Seattle to Ottawa takes 7h 00m

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?
There are 3521.0 km between Seattle/Tacoma Intl and Ottawa. Typically, this will take 7h 00m by plane in normal conditions.
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 refresh daily.
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 travel and health documents required for your trip to Ottawa 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 Ottawa Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Gatineau

Brockville

Smiths Falls

Pembroke

Perth

Calabogie

Wakefield

Petawawa

Prescott

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Seattle to Ottawa . Millions of users trust and use momondo every year so you are in good hands.

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

All flight searches from Seattle to Ottawa on momondo can be filtered to show those which offer flexible booking policies.

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

momondo helps you find the best flight between Seattle and Ottawa by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Yes momondo offers price alerts on flights to Ottawa from Seattle. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.