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Cheap flights from Seattle to Ottawa from $150

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 1/15. 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
3:10 pm - 4:53 pm
SEA
-
YOW
22h 43m1 stop
WestJet Logo
5:40 am - 2:20 pm
YOW
-
SEA
11h 40m2 stops
$259WestJet
Wed, Jan 21 - Wed, Jan 28
WestJet Logo
3:10 pm - 4:53 pm
SEA
-
YOW
22h 43m1 stop
WestJet Logo
5:45 pm - 2:19 pm
YOW
-
SEA
23h 34m1 stop
$265WestJet
Mon, Feb 2 - Tue, Feb 10
WestJet Logo
3:10 pm - 6:23 pm
SEA
-
YOW
24h 13m2 stops
WestJet Logo
5:40 am - 2:19 pm
YOW
-
SEA
11h 39m2 stops
$271WestJet
Thu, Apr 16 - Sun, Apr 19
WestJet Logo
3:10 pm - 12:42 am
SEA
-
YOW
30h 32m2 stops
WestJet Logo
5:40 am - 2:20 pm
YOW
-
SEA
11h 40m2 stops
$283WestJet
Wed, Jan 21 - Wed, Jan 28
Multiple Airlines Logo
3:10 pm - 4:53 pm
SEA
-
YOW
22h 43m1 stop
Multiple Airlines Logo
2:05 pm - 10:51 pm
YOW
-
SEA
11h 46m2 stops
$293Multiple Airlines
Mon, Feb 2 - Tue, Feb 10
Multiple Airlines Logo
11:05 pm - 2:45 pm
SEA
-
YOW
12h 40m1 stop
Multiple Airlines Logo
5:40 am - 2:20 pm
YOW
-
SEA
35h 40m2 stops
$303Multiple Airlines
Wed, Jan 21 - Wed, Jan 28
WestJet Logo
3:10 pm - 6:23 pm
SEA
-
YOW
24h 13m2 stops
WestJet Logo
5:40 am - 2:19 pm
YOW
-
SEA
35h 39m2 stops
$306WestJet
Thu, Apr 16 - Sun, Apr 19
Multiple Airlines Logo
11:05 pm - 2:45 pm
SEA
-
YOW
12h 40m1 stop
Multiple Airlines Logo
5:40 am - 7:17 pm
YOW
-
SEA
16h 37m1 stop
$318Multiple Airlines
Tue, Jan 13 - Tue, Jan 20
Multiple Airlines Logo
9:23 pm - 12:40 am
SEA
-
YOW
24h 17m2 stops
Multiple Airlines Logo
5:40 am - 7:17 pm
YOW
-
SEA
16h 37m1 stop
$323Multiple Airlines
Sun, Jan 11 - Sat, Jan 17
Air Canada Logo
8:00 pm - 9:23 am
SEA
-
YOW
10h 23m2 stops
Air Canada Logo
7:15 am - 2:31 pm
YOW
-
SEA
10h 16m2 stops
$327Air Canada
Mon, Feb 2 - Tue, Feb 10

Air Canada flights from Seattle to Ottawa

Our best Air Canada deals on Seattle to Ottawa flight tickets
Air Canada
Feb 2
SEA8:00 pmSeattle/Tacoma Intl
10h 23m
2 stops
YOW9:23 amOttawa
Feb 10
YOW7:15 amOttawa
10h 16m
2 stops
SEA2:31 pmSeattle/Tacoma Intl
$327
Find similar
Air Canada
Jan 11
SEA8:00 pmSeattle/Tacoma Intl
7h 43m
1 stop
YOW6:43 amOttawa
Jan 15
YOW7:45 amOttawa
9h 46m
1 stop
SEA2:31 pmSeattle/Tacoma Intl
$342
Find similar
Air Canada
Jan 9
SEA8:00 pmSeattle/Tacoma Intl
7h 43m
1 stop
YOW6:43 amOttawa
Jan 12
YOW4:15 pmOttawa
9h 01m
1 stop
SEA10:16 pmSeattle/Tacoma Intl
$349
Find similar

WestJet flights from Seattle to Ottawa

Our best WestJet deals on Seattle to Ottawa flight tickets
WestJet
Jan 21
SEA3:10 pmSeattle/Tacoma Intl
22h 43m
1 stop
YOW4:53 pmOttawa
Jan 28
YOW5:40 amOttawa
11h 40m
2 stops
SEA2:20 pmSeattle/Tacoma Intl
$259
Find similar
WestJet
Feb 2
SEA3:10 pmSeattle/Tacoma Intl
22h 43m
1 stop
YOW4:53 pmOttawa
Feb 10
YOW5:45 pmOttawa
23h 34m
1 stop
SEA2:19 pmSeattle/Tacoma Intl
$265
Find similar
WestJet
Apr 16
SEA3:10 pmSeattle/Tacoma Intl
24h 13m
2 stops
YOW6:23 pmOttawa
Apr 19
YOW5:40 amOttawa
11h 39m
2 stops
SEA2:19 pmSeattle/Tacoma Intl
$271
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 December 18, 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

Wed 1/21

3:10 pm-4:53 pm

1 stop22h 43m

Ottawa

Wed 1/28

5:40 am-2:20 pm

2 stops11h 40m

$259

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Mon 2/2

3:10 pm-4:53 pm

1 stop22h 43m

Ottawa

Tue 2/10

5:45 pm-2:19 pm

1 stop23h 34m

$265

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Thu 4/16

3:10 pm-6:23 pm

2 stops24h 13m

Ottawa

Sun 4/19

5:40 am-2:19 pm

2 stops11h 39m

$271

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Wed 1/21

3:10 pm-12:42 am

2 stops30h 32m

Ottawa

Wed 1/28

5:40 am-2:20 pm

2 stops11h 40m

$283

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Mon 2/2

3:10 pm-4:53 pm

1 stop22h 43m

Ottawa

Tue 2/10

2:05 pm-10:51 pm

2 stops11h 46m

$293

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Wed 1/21

11:05 pm-2:45 pm

1 stop12h 40m

Ottawa

Wed 1/28

5:40 am-2:20 pm

2 stops35h 40m

$303

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Thu 4/16

3:10 pm-6:23 pm

2 stops24h 13m

Ottawa

Sun 4/19

5:40 am-2:19 pm

2 stops35h 39m

$306

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Tue 1/13

11:05 pm-2:45 pm

1 stop12h 40m

Ottawa

Tue 1/20

5:40 am-7:17 pm

1 stop16h 37m

$318

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Sun 1/11

9:23 pm-12:40 am

2 stops24h 17m

Ottawa

Sat 1/17

5:40 am-7:17 pm

1 stop16h 37m

$323

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Mon 2/2

8:00 pm-9:23 am

2 stops10h 23m

Ottawa

Tue 2/10

7:15 am-2:31 pm

2 stops10h 16m

$327

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 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 $405.

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 $483 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 $240 on momondo.

Can stopping save me money on Seattle to Ottawa flights?

You could potentially save up to 68% 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

6h 56m

Direct flights

None
The fastest flight from Seattle to Ottawa takes 6h 56m
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 56m 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 $257Free CancellationRating
7.1
10,534 reviews
Search Air Canada flights
WestJetPriceFrom $286Free CancellationRating
7.2
3,204 reviews
Search WestJet flights
United AirlinesPriceFrom $362Free CancellationRating
7.4
9,092 reviews
Search United Airlines flights

Traveling to a place near Ottawa?

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

An easier way to manage your Ottawa trip

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