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

WestJet and Air Canada 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$ 157 Cheap Flights from Seattle to Ottawa in 2026

1 adult

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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.

3:10 p.m. - 6:23 p.m.

SEA

YOW

24h 13m

2 stops

1:20 p.m. - 6:45 p.m.

YOW

SEA

8h 25m

1 stop

C$ 434WestJet

Thu, 9 Apr - Mon, 27 Apr

8:41 a.m. - 2:44 p.m.

SEA

YOW

27h 03m

1 stop

1:20 p.m. - 6:45 p.m.

YOW

SEA

8h 25m

1 stop

C$ 449Multiple Airlines

Tue, 7 Apr - Sun, 26 Apr

3:10 p.m. - 4:53 p.m.

SEA

YOW

22h 43m

1 stop

1:20 p.m. - 6:45 p.m.

YOW

SEA

8h 25m

1 stop

C$ 460WestJet

Thu, 9 Apr - Thu, 30 Apr

8:41 a.m. - 8:04 p.m.

SEA

YOW

8h 23m

1 stop

1:20 p.m. - 6:45 p.m.

YOW

SEA

8h 25m

1 stop

C$ 466Multiple Airlines

Thu, 9 Apr - Sun, 26 Apr

11:05 p.m. - 6:23 p.m.

SEA

YOW

16h 18m

2 stops

1:20 p.m. - 6:45 p.m.

YOW

SEA

8h 25m

1 stop

C$ 478Multiple Airlines

Thu, 9 Apr - Thu, 30 Apr

3:10 p.m. - 6:23 p.m.

SEA

YOW

24h 13m

2 stops

1:20 p.m. - 6:45 p.m.

YOW

SEA

8h 25m

1 stop

C$ 493WestJet

Thu, 9 Apr - Wed, 29 Apr

3:10 p.m. - 4:53 p.m.

SEA

YOW

22h 43m

1 stop

4:15 p.m. - 6:45 p.m.

YOW

SEA

29h 30m

1 stop

C$ 502WestJet

Thu, 9 Apr - Tue, 28 Apr

8:41 a.m. - 2:44 p.m.

SEA

YOW

27h 03m

1 stop

1:20 p.m. - 6:45 p.m.

YOW

SEA

8h 25m

1 stop

C$ 508Multiple Airlines

Tue, 7 Apr - Wed, 29 Apr

8:41 a.m. - 12:41 a.m.

SEA

YOW

13h 00m

2 stops

1:20 p.m. - 6:45 p.m.

YOW

SEA

8h 25m

1 stop

C$ 513Multiple Airlines

Tue, 7 Apr - Sun, 26 Apr

8:41 a.m. - 12:40 a.m.

SEA

YOW

12h 59m

2 stops

1:20 p.m. - 6:45 p.m.

YOW

SEA

8h 25m

1 stop

C$ 515Multiple Airlines

Wed, 8 Apr - Mon, 27 Apr

WestJet flights from Seattle to Ottawa

Our best WestJet deals on Seattle to Ottawa flight tickets

WestJet

9 Apr

SEA3:10 p.m.Seattle/Tacoma Intl

24h 13m

2 stops

YOW6:23 p.m.Ottawa

27 Apr

YOW1:20 p.m.Ottawa

8h 25m

1 stop

SEA6:45 p.m.Seattle/Tacoma Intl

C$ 434

WestJet

9 Apr

SEA3:10 p.m.Seattle/Tacoma Intl

22h 43m

1 stop

YOW4:53 p.m.Ottawa

30 Apr

YOW1:20 p.m.Ottawa

8h 25m

1 stop

SEA6:45 p.m.Seattle/Tacoma Intl

C$ 460

WestJet

9 Apr

SEA3:10 p.m.Seattle/Tacoma Intl

24h 13m

2 stops

YOW6:23 p.m.Ottawa

29 Apr

YOW1:20 p.m.Ottawa

8h 25m

1 stop

SEA6:45 p.m.Seattle/Tacoma Intl

C$ 493

United Airlines flights from Seattle to Ottawa

Our best United Airlines deals on Seattle to Ottawa flight tickets

United Airlines

6 Apr

SEA10:35 p.m.Seattle/Tacoma Intl

15h 32m

1 stop

YOW5:07 p.m.Ottawa

27 Apr

YOW5:20 p.m.Ottawa

9h 59m

1 stop

SEA12:19 a.m.Seattle/Tacoma Intl

C$ 561

United Airlines

31 Mar

SEA5:00 a.m.Seattle/Tacoma Intl

9h 07m

2 stops

YOW5:07 p.m.Ottawa

4 Apr

YOW5:50 p.m.Ottawa

9h 09m

1 stop

SEA11:59 p.m.Seattle/Tacoma Intl

C$ 573

United Airlines

6 Feb

SEA8:40 a.m.Seattle/Tacoma Intl

10h 16m

2 stops

YOW9:56 p.m.Ottawa

21 Feb

YOW4:15 p.m.Ottawa

9h 01m

1 stop

SEA10:16 p.m.Seattle/Tacoma Intl

C$ 1,074

Fly from

Fly to

Route

Depart

Return

Price

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Thu 9/4

3:10 p.m.-6:23 p.m.

2 stops24h 13m

Ottawa

Mon 27/4

1:20 p.m.-6:45 p.m.

1 stop8h 25m

C$ 434

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Tue 7/4

8:41 a.m.-2:44 p.m.

1 stop27h 03m

Ottawa

Sun 26/4

1:20 p.m.-6:45 p.m.

1 stop8h 25m

C$ 449

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Thu 9/4

3:10 p.m.-4:53 p.m.

1 stop22h 43m

Ottawa

Thu 30/4

1:20 p.m.-6:45 p.m.

1 stop8h 25m

C$ 460

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Thu 9/4

8:41 a.m.-8:04 p.m.

1 stop8h 23m

Ottawa

Sun 26/4

1:20 p.m.-6:45 p.m.

1 stop8h 25m

C$ 466

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Thu 9/4

11:05 p.m.-6:23 p.m.

2 stops16h 18m

Ottawa

Thu 30/4

1:20 p.m.-6:45 p.m.

1 stop8h 25m

C$ 478

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Thu 9/4

3:10 p.m.-6:23 p.m.

2 stops24h 13m

Ottawa

Wed 29/4

1:20 p.m.-6:45 p.m.

1 stop8h 25m

C$ 493

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Thu 9/4

3:10 p.m.-4:53 p.m.

1 stop22h 43m

Ottawa

Tue 28/4

4:15 p.m.-6:45 p.m.

1 stop29h 30m

C$ 502

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Tue 7/4

8:41 a.m.-2:44 p.m.

1 stop27h 03m

Ottawa

Wed 29/4

1:20 p.m.-6:45 p.m.

1 stop8h 25m

C$ 508

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Tue 7/4

8:41 a.m.-12:41 a.m.

2 stops13h 00m

Ottawa

Sun 26/4

1:20 p.m.-6:45 p.m.

1 stop8h 25m

C$ 513

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Wed 8/4

8:41 a.m.-12:40 a.m.

2 stops12h 59m

Ottawa

Mon 27/4

1:20 p.m.-6:45 p.m.

1 stop8h 25m

C$ 515

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 October is, on average, the cheapest month to fly to Ottawa from Seattle, with most prices found around C$ 535. If you aren’t able to travel to Ottawa during the month of October, then flying in August is also cheap. Prices for this month can be found on momondo for an average of C$ 562.

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$ 668 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$ 327 on momondo.

How have Seattle to Ottawa flight prices changed over time?

As of February 2026, prices for Seattle to Ottawa flights are approximately 45% more expensive when compared to flights at the same time last year.

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

Fastest flight time	7h 27m
Direct flights	None

The fastest flight from Seattle to Ottawa takes 7h 27m

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 27m 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

Perth

Smiths Falls

Prescott

Calabogie

Wakefield

Petawawa

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.