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Cheap flights from Seattle to Ottawa from $168

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 11/20. 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.
United Airlines Logo
11:59 pm - 10:26 amSEA-YOW
7h 27m1 stop
United Airlines Logo
2:15 pm - 8:35 pmYOW-SEA
9h 20m1 stop
$259United Airlines
Find Deal
Tue, Mar 10 - Wed, Mar 11
United Airlines Logo
9:19 am - 10:26 amSEA-YOW
22h 07m2 stops
United Airlines Logo
2:15 pm - 8:35 pmYOW-SEA
9h 20m1 stop
$264United Airlines
Find Deal
Tue, Mar 10 - Wed, Mar 11
WestJet Logo
3:10 pm - 4:53 pmSEA-YOW
22h 43m1 stop
WestJet Logo
5:40 am - 2:19 pmYOW-SEA
11h 39m2 stops
$277WestJet
Find Deal
Mon, Feb 9 - Wed, Feb 25
Air Canada Logo
5:50 am - 3:45 pmSEA-YOW
6h 55m1 stop
Air Canada Logo
5:45 am - 2:31 pmYOW-SEA
11h 46m2 stops
$278Air Canada
Find Deal
Wed, Jan 21 - Fri, Jan 23
Air Canada Logo
5:50 am - 3:45 pmSEA-YOW
6h 55m1 stop
Air Canada Logo
4:15 pm - 10:16 pmYOW-SEA
9h 01m1 stop
$279Air Canada
Find Deal
Fri, Feb 6 - Tue, Feb 24
WestJet Logo
3:10 pm - 12:39 amSEA-YOW
30h 29m2 stops
WestJet Logo
5:40 am - 2:19 pmYOW-SEA
11h 39m2 stops
$282WestJet
Find Deal
Tue, Feb 24 - Wed, Mar 11
Air Canada Logo
8:00 pm - 6:43 amSEA-YOW
7h 43m1 stop
Air Canada Logo
5:00 am - 3:01 pmYOW-SEA
13h 01m2 stops
$284Air Canada
Find Deal
Sat, Feb 14 - Sun, Mar 1
Air Canada Logo
8:10 am - 6:38 pmSEA-YOW
7h 28m1 stop
Air Canada Logo
4:15 pm - 10:16 pmYOW-SEA
9h 01m1 stop
$286Air Canada
Find Deal
Wed, Feb 11 - Tue, Feb 24
Multiple Airlines Logo
8:00 am - 12:39 amSEA-YOW
13h 39m1 stop
Multiple Airlines Logo
5:40 am - 1:19 pmYOW-SEA
11h 39m2 stops
$324Multiple Airlines
Find Deal
Sat, Feb 21 - Sun, Mar 8
Multiple Airlines Logo
3:10 pm - 2:01 pmSEA-YOW
19h 51m2 stops
Multiple Airlines Logo
6:00 am - 2:19 pmYOW-SEA
11h 19m1 stop
$332Multiple Airlines
Find Deal
Mon, Feb 23 - Sun, Mar 8

United Airlines flights from Seattle to Ottawa

Our best United Airlines deals on Seattle to Ottawa flight tickets
United Airlines
Mar 10
SEA11:59 pmSeattle/Tacoma Intl
7h 27m
1 stop
YOW10:26 amOttawa
Mar 11
YOW2:15 pmOttawa
9h 20m
1 stop
SEA8:35 pmSeattle/Tacoma Intl
$259
Find similar
United Airlines
Mar 10
SEA9:19 amSeattle/Tacoma Intl
22h 07m
2 stops
YOW10:26 amOttawa
Mar 11
YOW2:15 pmOttawa
9h 20m
1 stop
SEA8:35 pmSeattle/Tacoma Intl
$264
Find similar
United Airlines
Feb 21
SEA8:17 amSeattle/Tacoma Intl
12h 37m
1 stop
YOW11:54 pmOttawa
Mar 12
YOW6:20 amOttawa
19h 12m
1 stop
SEA10:32 pmSeattle/Tacoma Intl
$287
Find similar

WestJet flights from Seattle to Ottawa

Our best WestJet deals on Seattle to Ottawa flight tickets
WestJet
Feb 9
SEA3:10 pmSeattle/Tacoma Intl
22h 43m
1 stop
YOW4:53 pmOttawa
Feb 25
YOW5:40 amOttawa
11h 39m
2 stops
SEA2:19 pmSeattle/Tacoma Intl
$277
Find similar
WestJet
Feb 24
SEA3:10 pmSeattle/Tacoma Intl
30h 29m
2 stops
YOW12:39 amOttawa
Mar 11
YOW5:40 amOttawa
11h 39m
2 stops
SEA2:19 pmSeattle/Tacoma Intl
$282
Find similar
WestJet
Feb 22
SEA3:10 pmSeattle/Tacoma Intl
22h 43m
1 stop
YOW4:53 pmOttawa
Mar 10
YOW5:40 amOttawa
11h 39m
2 stops
SEA2:19 pmSeattle/Tacoma Intl
$311
Find similar

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 October 30, 2025.
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

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Tue 3/10

11:59 pm-10:26 am

1 stop7h 27m

Ottawa

Wed 3/11

2:15 pm-8:35 pm

1 stop9h 20m

$259

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Tue 3/10

9:19 am-10:26 am

2 stops22h 07m

Ottawa

Wed 3/11

2:15 pm-8:35 pm

1 stop9h 20m

$264

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Mon 2/9

3:10 pm-4:53 pm

1 stop22h 43m

Ottawa

Wed 2/25

5:40 am-2:19 pm

2 stops11h 39m

$277

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Wed 1/21

5:50 am-3:45 pm

1 stop6h 55m

Ottawa

Fri 1/23

5:45 am-2:31 pm

2 stops11h 46m

$278

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Fri 2/6

5:50 am-3:45 pm

1 stop6h 55m

Ottawa

Tue 2/24

4:15 pm-10:16 pm

1 stop9h 01m

$279

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Tue 2/24

3:10 pm-12:39 am

2 stops30h 29m

Ottawa

Wed 3/11

5:40 am-2:19 pm

2 stops11h 39m

$282

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Sat 2/14

8:00 pm-6:43 am

1 stop7h 43m

Ottawa

Sun 3/1

5:00 am-3:01 pm

2 stops13h 01m

$284

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Wed 2/11

8:10 am-6:38 pm

1 stop7h 28m

Ottawa

Tue 2/24

4:15 pm-10:16 pm

1 stop9h 01m

$286

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Sat 2/21

8:00 am-12:39 am

1 stop13h 39m

Ottawa

Sun 3/8

5:40 am-1:19 pm

2 stops11h 39m

$324

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Mon 2/23

3:10 pm-2:01 pm

2 stops19h 51m

Ottawa

Sun 3/8

6:00 am-2:19 pm

1 stop11h 19m

$332

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 cheapest month to fly to Ottawa?

In general, October 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 $393. The month of August is another great option to travel to Ottawa, with average flight prices from Seattle averaging around $413.

What is the cheapest day to depart on your flight to Ottawa?

The cheapest day to depart from Seattle to Ottawa is on a Thursday. Travelers who choose to depart for Ottawa on a Thursday will often find tickets for as low as $461. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to Ottawa on Sunday is $627.

What is the cheapest time of day to depart on your flight to Ottawa?

In the afternoon is the cheapest time of day to fly from Seattle to Ottawa when you can find flight prices for as low as $384. Flying to Ottawa in the afternoon is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $559 on average. Flights to Ottawa from Seattle in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

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 $500 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 $268 on momondo.

Can stopping save me money on Seattle to Ottawa flights?

You could potentially save up to 13% 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

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?

    Seattle/Tacoma Intl and Ottawa are 2187.8 mi apart from one another. 6h 55m 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
Air CanadaPriceFrom $256Free CancellationRating
7.1
10,381 reviews
Search Air Canada flights
United AirlinesPriceFrom $282Free CancellationRating
7.4
8,998 reviews
Search United Airlines flights
WestJetPriceFrom $294Free CancellationRating
7.2
3,152 reviews
Search WestJet flights

Traveling to a place near Ottawa?

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