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Cheap flights from Seattle to Ottawa from $187

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 9/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Seattle to Ottawa

Cheap round-trip flights

Enter your travel dates to find the best prices.
WestJet Logo
7:35 pm - 5:35 am
SEA
-
YOW
7h 00m
1 stop
WestJet Logo
1:20 pm - 6:45 pm
YOW
-
SEA
8h 25m
1 stop
$355WestJet
Thu, Jun 4 - Wed, Jun 10
WestJet Logo
7:00 am - 7:20 pm
SEA
-
YOW
9h 20m
1 stop
WestJet Logo
1:20 pm - 6:45 pm
YOW
-
SEA
8h 25m
1 stop
$356WestJet
Wed, Aug 5 - Wed, Aug 12
WestJet Logo
7:35 pm - 5:35 am
SEA
-
YOW
7h 00m
1 stop
WestJet Logo
1:20 pm - 6:45 pm
YOW
-
SEA
8h 25m
1 stop
$371WestJet
Wed, Jun 3 - Wed, Jun 10
WestJet Logo
7:35 pm - 5:35 am
SEA
-
YOW
7h 00m
1 stop
WestJet Logo
1:20 pm - 6:45 pm
YOW
-
SEA
8h 25m
1 stop
$379WestJet
Sat, Jul 25 - Sat, Aug 1
WestJet Logo
7:35 pm - 5:35 am
SEA
-
YOW
7h 00m
1 stop
WestJet Logo
1:20 pm - 6:45 pm
YOW
-
SEA
8h 25m
1 stop
$380WestJet
Thu, Jun 4 - Wed, Jun 10
WestJet Logo
7:00 am - 7:20 pm
SEA
-
YOW
9h 20m
1 stop
WestJet Logo
12:25 pm - 9:00 pm
YOW
-
SEA
11h 35m
2 stops
$384WestJet
Tue, Jul 7 - Thu, Jul 9
WestJet Logo
7:00 am - 5:15 pm
SEA
-
YOW
7h 15m
1 stop
WestJet Logo
7:20 am - 6:45 pm
YOW
-
SEA
14h 25m
1 stop
$387WestJet
Wed, Aug 5 - Fri, Aug 7
WestJet Logo
7:00 am - 5:15 pm
SEA
-
YOW
7h 15m
1 stop
WestJet Logo
1:20 pm - 9:40 am
YOW
-
SEA
23h 20m
1 stop
$388WestJet
Sat, Jul 4 - Sat, Jul 11
WestJet Logo
7:00 am - 7:20 pm
SEA
-
YOW
9h 20m
1 stop
WestJet Logo
6:00 am - 6:45 pm
YOW
-
SEA
15h 45m
1 stop
$389WestJet
Tue, Jul 7 - Thu, Jul 9
WestJet Logo
10:30 am - 12:20 am
SEA
-
YOW
10h 50m
2 stops
WestJet Logo
1:20 pm - 6:45 pm
YOW
-
SEA
8h 25m
1 stop
$390WestJet
Wed, Jun 24 - Tue, Jul 7

WestJet flights from Seattle to Ottawa

Our best WestJet deals on Seattle to Ottawa flight tickets
WestJet
Jun 4
SEA7:35 pmSeattle/Tacoma Intl
7h 00m
1 stop
YOW5:35 amOttawa
Jun 10
YOW1:20 pmOttawa
8h 25m
1 stop
SEA6:45 pmSeattle/Tacoma Intl
$355
WestJet
Aug 5
SEA7:00 amSeattle/Tacoma Intl
9h 20m
1 stop
YOW7:20 pmOttawa
Aug 12
YOW1:20 pmOttawa
8h 25m
1 stop
SEA6:45 pmSeattle/Tacoma Intl
$356
WestJet
Jun 3
SEA7:35 pmSeattle/Tacoma Intl
7h 00m
1 stop
YOW5:35 amOttawa
Jun 10
YOW1:20 pmOttawa
8h 25m
1 stop
SEA6:45 pmSeattle/Tacoma Intl
$371

American Airlines flights from Seattle to Ottawa

Our best American Airlines deals on Seattle to Ottawa flight tickets
American Airlines
May 21
SEA10:35 pmSeattle/Tacoma Intl
18h 30m
2 stops
YOW8:05 pmOttawa
May 24
YOW7:00 amOttawa
16h 33m
3 stops
SEA8:33 pmSeattle/Tacoma Intl
$1,241
American Airlines
May 21
SEA12:46 pmSeattle/Tacoma Intl
23h 09m
2 stops
YOW2:55 pmOttawa
May 24
YOW7:00 amOttawa
16h 33m
3 stops
SEA8:33 pmSeattle/Tacoma Intl
$1,365
American Airlines
May 20
SEA11:33 pmSeattle/Tacoma Intl
17h 32m
3 stops
YOW8:05 pmOttawa
May 22
YOW8:40 amOttawa
15h 24m
3 stops
SEA9:04 pmSeattle/Tacoma Intl
$1,593

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Ottawa that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated May 11, 2026.
Use the filters below to find and compare flights from Seattle to Ottawa that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Thu 6/4

7:35 pm-5:35 am

1 stop7h 00m

Ottawa

Wed 6/10

1:20 pm-6:45 pm

1 stop8h 25m

$355

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Wed 8/5

7:00 am-7:20 pm

1 stop9h 20m

Ottawa

Wed 8/12

1:20 pm-6:45 pm

1 stop8h 25m

$356

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Wed 6/3

7:35 pm-5:35 am

1 stop7h 00m

Ottawa

Wed 6/10

1:20 pm-6:45 pm

1 stop8h 25m

$371

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Sat 7/25

7:35 pm-5:35 am

1 stop7h 00m

Ottawa

Sat 8/1

1:20 pm-6:45 pm

1 stop8h 25m

$379

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Thu 6/4

7:35 pm-5:35 am

1 stop7h 00m

Ottawa

Wed 6/10

1:20 pm-6:45 pm

1 stop8h 25m

$380

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Tue 7/7

7:00 am-7:20 pm

1 stop9h 20m

Ottawa

Thu 7/9

12:25 pm-9:00 pm

2 stops11h 35m

$384

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Wed 8/5

7:00 am-5:15 pm

1 stop7h 15m

Ottawa

Fri 8/7

7:20 am-6:45 pm

1 stop14h 25m

$387

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Sat 7/4

7:00 am-5:15 pm

1 stop7h 15m

Ottawa

Sat 7/11

1:20 pm-9:40 am

1 stop23h 20m

$388

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Tue 7/7

7:00 am-7:20 pm

1 stop9h 20m

Ottawa

Thu 7/9

6:00 am-6:45 pm

1 stop15h 45m

$389

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Wed 6/24

10:30 am-12:20 am

2 stops10h 50m

Ottawa

Tue 7/7

1:20 pm-6:45 pm

1 stop8h 25m

$390

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Ottawa from

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

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

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 April is another great option to travel to Ottawa, with average flight prices from Seattle averaging around $354.

Can stopping save me money on Seattle to Ottawa flights?

You could potentially save up to 19% 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

Fastest flight time

7h 00m

Direct flights

None
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?

    Seattle/Tacoma Intl and Ottawa are 2187.8 mi apart from one another. 7h 00m 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?

  • 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?

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
United AirlinesPriceFrom $238Free CancellationRating
7.4
9,694 reviews
Search United Airlines flights
WestJetPriceFrom $266Free CancellationRating
7.2
3,332 reviews
Search WestJet flights
Air CanadaPriceFrom $354Free CancellationRating
7.1
11,012 reviews
Search Air Canada flights

Traveling to a place near Ottawa?

Book flights to Ottawa if you plan to visit one of these locations
Gatineau
Pembroke
Petawawa
Smiths Falls
Brockville
Calabogie
Perth
Prescott
Winchester
Wakefield

Why use momondo?

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.

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