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Cheap flights from Seattle to Ottawa from $111

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 5/5. 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 43m
1 stop
WestJet Logo
5:45 pm - 2:19 pm
YOW
-
SEA
23h 34m
1 stop
$316WestJet
Mon, Mar 2 - Mon, Mar 9
WestJet Logo
3:10 pm - 6:23 pm
SEA
-
YOW
24h 13m
2 stops
WestJet Logo
1:20 pm - 6:45 pm
YOW
-
SEA
8h 25m
1 stop
$319WestJet
Thu, Apr 9 - Mon, Apr 27
WestJet Logo
3:10 pm - 4:53 pm
SEA
-
YOW
22h 43m
1 stop
WestJet Logo
7:15 pm - 2:19 pm
YOW
-
SEA
22h 04m
2 stops
$326WestJet
Mon, Mar 2 - Mon, Mar 9
WestJet Logo
3:10 pm - 12:39 am
SEA
-
YOW
30h 29m
2 stops
WestJet Logo
7:15 pm - 2:19 pm
YOW
-
SEA
22h 04m
2 stops
$327WestJet
Mon, Mar 2 - Mon, Mar 9
Multiple Airlines Logo
8:41 am - 2:44 pm
SEA
-
YOW
27h 03m
1 stop
Multiple Airlines Logo
1:20 pm - 6:45 pm
YOW
-
SEA
8h 25m
1 stop
$330Multiple Airlines
Tue, Apr 7 - Mon, Apr 27
WestJet Logo
3:10 pm - 4:53 pm
SEA
-
YOW
22h 43m
1 stop
WestJet Logo
1:20 pm - 6:45 pm
YOW
-
SEA
8h 25m
1 stop
$338WestJet
Thu, Apr 9 - Thu, Apr 30
Multiple Airlines Logo
8:41 am - 8:04 pm
SEA
-
YOW
8h 23m
1 stop
Multiple Airlines Logo
1:20 pm - 6:45 pm
YOW
-
SEA
8h 25m
1 stop
$342Multiple Airlines
Thu, Apr 9 - Sun, Apr 26
WestJet Logo
3:10 pm - 12:39 am
SEA
-
YOW
30h 29m
2 stops
WestJet Logo
5:40 am - 2:19 pm
YOW
-
SEA
11h 39m
2 stops
$345WestJet
Fri, Apr 17 - Fri, Apr 24
Multiple Airlines Logo
11:05 pm - 6:23 pm
SEA
-
YOW
16h 18m
2 stops
Multiple Airlines Logo
1:20 pm - 6:45 pm
YOW
-
SEA
8h 25m
1 stop
$351Multiple Airlines
Thu, Apr 9 - Thu, Apr 30
WestJet Logo
3:10 pm - 6:23 pm
SEA
-
YOW
24h 13m
2 stops
WestJet Logo
1:20 pm - 6:45 pm
YOW
-
SEA
8h 25m
1 stop
$362WestJet
Thu, Apr 9 - Wed, Apr 29

United Airlines flights from Seattle to Ottawa

Our best United Airlines deals on Seattle to Ottawa flight tickets
United Airlines
May 5
SEA7:00 amSeattle/Tacoma Intl
7h 07m
1 stop
YOW5:07 pmOttawa
May 5
YOW7:37 pmOttawa
19h 11m
1 stop
SEA11:48 amSeattle/Tacoma Intl
$382
United Airlines
May 5
SEA7:00 amSeattle/Tacoma Intl
7h 07m
1 stop
YOW5:07 pmOttawa
May 5
YOW7:37 pmOttawa
17h 03m
2 stops
SEA9:40 amSeattle/Tacoma Intl
$392
United Airlines
Apr 6
SEA10:35 pmSeattle/Tacoma Intl
15h 32m
1 stop
YOW5:07 pmOttawa
Apr 26
YOW5:20 pmOttawa
9h 59m
1 stop
SEA12:19 amSeattle/Tacoma Intl
$412

Air Canada flights from Seattle to Ottawa

Our best Air Canada deals on Seattle to Ottawa flight tickets
Air Canada
Apr 4
SEA8:00 pmSeattle/Tacoma Intl
7h 45m
1 stop
YOW6:45 amOttawa
Apr 24
YOW6:00 pmOttawa
7h 50m
1 stop
SEA10:50 pmSeattle/Tacoma Intl
$397
Air Canada
Apr 6
SEA8:00 amSeattle/Tacoma Intl
7h 34m
1 stop
YOW6:34 pmOttawa
Apr 29
YOW6:00 pmOttawa
7h 50m
1 stop
SEA10:50 pmSeattle/Tacoma Intl
$405
Air Canada
Mar 4
SEA5:40 amSeattle/Tacoma Intl
7h 05m
1 stop
YOW3:45 pmOttawa
Mar 8
YOW5:45 amOttawa
12h 16m
2 stops
SEA2:01 pmSeattle/Tacoma Intl
$406

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 February 4, 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

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Mon 3/2

3:10 pm-4:53 pm

1 stop22h 43m

Ottawa

Mon 3/9

5:45 pm-2:19 pm

1 stop23h 34m

$316

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Thu 4/9

3:10 pm-6:23 pm

2 stops24h 13m

Ottawa

Mon 4/27

1:20 pm-6:45 pm

1 stop8h 25m

$319

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Mon 3/2

3:10 pm-4:53 pm

1 stop22h 43m

Ottawa

Mon 3/9

7:15 pm-2:19 pm

2 stops22h 04m

$326

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Mon 3/2

3:10 pm-12:39 am

2 stops30h 29m

Ottawa

Mon 3/9

7:15 pm-2:19 pm

2 stops22h 04m

$327

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Tue 4/7

8:41 am-2:44 pm

1 stop27h 03m

Ottawa

Mon 4/27

1:20 pm-6:45 pm

1 stop8h 25m

$330

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Thu 4/9

3:10 pm-4:53 pm

1 stop22h 43m

Ottawa

Thu 4/30

1:20 pm-6:45 pm

1 stop8h 25m

$338

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Thu 4/9

8:41 am-8:04 pm

1 stop8h 23m

Ottawa

Sun 4/26

1:20 pm-6:45 pm

1 stop8h 25m

$342

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Fri 4/17

3:10 pm-12:39 am

2 stops30h 29m

Ottawa

Fri 4/24

5:40 am-2:19 pm

2 stops11h 39m

$345

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Thu 4/9

11:05 pm-6:23 pm

2 stops16h 18m

Ottawa

Thu 4/30

1:20 pm-6:45 pm

1 stop8h 25m

$351

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Thu 4/9

3:10 pm-6:23 pm

2 stops24h 13m

Ottawa

Wed 4/29

1:20 pm-6:45 pm

1 stop8h 25m

$362

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.

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 $491 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 3% on your flight if you consider stops on a Seattle to Ottawa flight.

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 07m

Direct flights

None
The fastest flight from Seattle to Ottawa takes 7h 07m
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. 7h 07m 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
9,236 reviews
Search United Airlines flights
Air CanadaPriceFrom $242Free CancellationRating
7.1
10,684 reviews
Search Air Canada flights
WestJetPriceFrom $284Free CancellationRating
7.2
3,255 reviews
Search WestJet flights

Traveling to a place near Ottawa?

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