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

United Airlines, Air Canada, and WestJet are the most popular carriers 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$ 171 Cheap Flights from Seattle to Ottawa in 2025/26

1 adult

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Find the cheapest flights from Seattle to Ottawa

Round-trip

One-way

Last minute

Cheap round-trip flights

11:50 p.m. - 10:07 a.m.SEA-YOW

7h 17m1 stop

2:05 p.m. - 12:51 a.m.YOW-SEA

13h 46m2 stops

C$ 329United Airlines

Find Deal

Tue, 10 Mar - Wed, 11 Mar

1:55 p.m. - 10:07 a.m.SEA-YOW

17h 12m2 stops

2:05 p.m. - 12:51 a.m.YOW-SEA

13h 46m2 stops

C$ 337United Airlines

Find Deal

Tue, 10 Mar - Wed, 11 Mar

6:31 a.m. - 4:50 p.m.SEA-YOW

7h 19m1 stop

4:10 p.m. - 10:16 p.m.YOW-SEA

9h 06m1 stop

C$ 348United Airlines

Find Deal

Tue, 10 Mar - Wed, 11 Mar

12:46 p.m. - 10:07 a.m.SEA-YOW

18h 21m2 stops

4:10 p.m. - 10:16 p.m.YOW-SEA

9h 06m1 stop

C$ 355United Airlines

Find Deal

Tue, 10 Mar - Wed, 11 Mar

1:50 p.m. - 12:40 a.m.SEA-YOW

7h 50m1 stop

5:55 a.m. - 12:59 p.m.YOW-SEA

10h 04m2 stops

C$ 365WestJet

Find Deal

Sat, 11 Oct - Wed, 15 Oct

8:40 a.m. - 4:19 p.m.SEA-YOW

28h 39m2 stops

5:55 a.m. - 12:59 p.m.YOW-SEA

10h 04m2 stops

C$ 367WestJet

Find Deal

Sat, 11 Oct - Wed, 15 Oct

12:00 p.m. - 12:19 a.m.SEA-YOW

9h 19m1 stop

6:00 p.m. - 10:31 p.m.YOW-SEA

7h 31m1 stop

C$ 490Air Canada

Find Deal

Sat, 11 Oct - Wed, 15 Oct

11:34 a.m. - 12:42 a.m.SEA-YOW

34h 08m2 stops

6:00 a.m. - 2:20 p.m.YOW-SEA

11h 20m1 stop

C$ 496Multiple Airlines

Find Deal

Thu, 6 Nov - Sun, 9 Nov

11:10 p.m. - 2:44 p.m.SEA-YOW

12h 34m1 stop

6:00 a.m. - 2:20 p.m.YOW-SEA

11h 20m1 stop

C$ 506Multiple Airlines

Find Deal

Thu, 6 Nov - Sun, 9 Nov

2:55 p.m. - 8:23 a.m.SEA-YOW

14h 28m1 stop

2:40 p.m. - 7:31 p.m.YOW-SEA

7h 51m1 stop

C$ 513Air Canada

Find Deal

Mon, 29 Sep - Tue, 30 Sep

United Airlines flights from Seattle to Ottawa

Our best United Airlines deals on Seattle to Ottawa flight tickets

United Airlines

10 Mar

SEA11:50 p.m.Seattle/Tacoma Intl

7h 17m

1 stop

YOW10:07 a.m.Ottawa

11 Mar

YOW2:05 p.m.Ottawa

13h 46m

2 stops

SEA12:51 a.m.Seattle/Tacoma Intl

C$ 329

Find similar

United Airlines

10 Mar

SEA1:55 p.m.Seattle/Tacoma Intl

17h 12m

2 stops

YOW10:07 a.m.Ottawa

11 Mar

YOW2:05 p.m.Ottawa

13h 46m

2 stops

SEA12:51 a.m.Seattle/Tacoma Intl

C$ 337

Find similar

United Airlines

10 Mar

SEA6:31 a.m.Seattle/Tacoma Intl

7h 19m

1 stop

YOW4:50 p.m.Ottawa

11 Mar

YOW4:10 p.m.Ottawa

9h 06m

1 stop

SEA10:16 p.m.Seattle/Tacoma Intl

C$ 348

Find similar

Air Canada flights from Seattle to Ottawa

Our best Air Canada deals on Seattle to Ottawa flight tickets

Air Canada

11 Oct

SEA12:00 p.m.Seattle/Tacoma Intl

9h 19m

1 stop

YOW12:19 a.m.Ottawa

15 Oct

YOW6:00 p.m.Ottawa

7h 31m

1 stop

SEA10:31 p.m.Seattle/Tacoma Intl

C$ 490

Find similar

Air Canada

29 Sep

SEA2:55 p.m.Seattle/Tacoma Intl

14h 28m

1 stop

YOW8:23 a.m.Ottawa

30 Sep

YOW2:40 p.m.Ottawa

7h 51m

1 stop

SEA7:31 p.m.Seattle/Tacoma Intl

C$ 513

Find similar

Air Canada

11 Oct

SEA12:00 p.m.Seattle/Tacoma Intl

9h 19m

1 stop

YOW12:19 a.m.Ottawa

15 Oct

YOW1:55 p.m.Ottawa

10h 50m

1 stop

SEA9:45 p.m.Seattle/Tacoma Intl

C$ 537

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Tue 10/3

11:50 p.m.-10:07 a.m.

1 stop7h 17m

Ottawa

Wed 11/3

2:05 p.m.-12:51 a.m.

2 stops13h 46m

C$ 329

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Tue 10/3

1:55 p.m.-10:07 a.m.

2 stops17h 12m

Ottawa

Wed 11/3

2:05 p.m.-12:51 a.m.

2 stops13h 46m

C$ 337

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Tue 10/3

6:31 a.m.-4:50 p.m.

1 stop7h 19m

Ottawa

Wed 11/3

4:10 p.m.-10:16 p.m.

1 stop9h 06m

C$ 348

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Tue 10/3

12:46 p.m.-10:07 a.m.

2 stops18h 21m

Ottawa

Wed 11/3

4:10 p.m.-10:16 p.m.

1 stop9h 06m

C$ 355

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Sat 11/10

1:50 p.m.-12:40 a.m.

1 stop7h 50m

Ottawa

Wed 15/10

5:55 a.m.-12:59 p.m.

2 stops10h 04m

C$ 365

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Sat 11/10

8:40 a.m.-4:19 p.m.

2 stops28h 39m

Ottawa

Wed 15/10

5:55 a.m.-12:59 p.m.

2 stops10h 04m

C$ 367

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Sat 11/10

12:00 p.m.-12:19 a.m.

1 stop9h 19m

Ottawa

Wed 15/10

6:00 p.m.-10:31 p.m.

1 stop7h 31m

C$ 490

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Thu 6/11

11:34 a.m.-12:42 a.m.

2 stops34h 08m

Ottawa

Sun 9/11

6:00 a.m.-2:20 p.m.

1 stop11h 20m

C$ 496

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Thu 6/11

11:10 p.m.-2:44 p.m.

1 stop12h 34m

Ottawa

Sun 9/11

6:00 a.m.-2:20 p.m.

1 stop11h 20m

C$ 506

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Mon 29/9

2:55 p.m.-8:23 a.m.

1 stop14h 28m

Ottawa

Tue 30/9

2:40 p.m.-7:31 p.m.

1 stop7h 51m

C$ 513

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 cheapest month to fly to Ottawa?

The month of September is, on average, the cheapest month to fly to Ottawa from Seattle, with most prices found around C$ 554. If you aren’t able to travel to Ottawa during the month of September, then flying in August is also cheap. Prices for this month can be found on momondo for an average of C$ 571.

How far in advance should I book a flight to Ottawa?

You are more likely to see cheaper flights to Ottawa from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Ottawa for around C$ 704 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ottawa from Seattle for as low as C$ 370 on momondo.

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

Direct flights	None

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

Search flight deals

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 17m 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

Pembroke

Brockville

Smiths Falls

Perth

Wakefield

Calabogie

Prescott

Petawawa

Winchester

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.