Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Ottawa to Seattle from C$ 241

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ottawa to Seattle departing on 13/6. 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

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names, great deals

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Early arrival? Instantly customize your results

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Ottawa to Seattle

Cheap round-trip flights

Enter your travel dates to find the best prices.
WestJet Logo
1:20 p.m. - 6:45 p.m.
YOW
-
SEA
8h 25m
1 stop
WestJet Logo
7:35 p.m. - 5:35 a.m.
SEA
-
YOW
7h 00m
1 stop
C$ 390WestJet
Tue, 19 May - Tue, 2 Jun
WestJet Logo
6:25 p.m. - 6:45 p.m.
YOW
-
SEA
27h 20m
2 stops
WestJet Logo
7:35 p.m. - 5:35 a.m.
SEA
-
YOW
7h 00m
1 stop
C$ 394WestJet
Wed, 29 Apr - Wed, 6 May
WestJet Logo
5:40 a.m. - 2:19 p.m.
YOW
-
SEA
11h 39m
2 stops
WestJet Logo
3:10 p.m. - 12:39 a.m.
SEA
-
YOW
30h 29m
2 stops
C$ 402WestJet
Tue, 14 Apr - Fri, 17 Apr
WestJet Logo
1:20 p.m. - 6:45 p.m.
YOW
-
SEA
8h 25m
1 stop
WestJet Logo
7:35 p.m. - 5:35 a.m.
SEA
-
YOW
7h 00m
1 stop
C$ 417WestJet
Mon, 15 Jun - Mon, 22 Jun
WestJet Logo
5:40 a.m. - 2:19 p.m.
YOW
-
SEA
11h 39m
2 stops
WestJet Logo
10:30 a.m. - 12:30 p.m.
SEA
-
YOW
23h 00m
2 stops
C$ 432WestJet
Fri, 24 Apr - Sun, 3 May
WestJet Logo
1:20 p.m. - 6:45 p.m.
YOW
-
SEA
8h 25m
1 stop
WestJet Logo
10:30 a.m. - 5:15 p.m.
SEA
-
YOW
27h 45m
1 stop
C$ 434WestJet
Mon, 11 May - Fri, 15 May
WestJet Logo
5:45 p.m. - 2:19 p.m.
YOW
-
SEA
23h 34m
1 stop
WestJet Logo
3:10 p.m. - 12:39 a.m.
SEA
-
YOW
30h 29m
2 stops
C$ 436WestJet
Tue, 14 Apr - Fri, 17 Apr
WestJet Logo
1:20 p.m. - 6:45 p.m.
YOW
-
SEA
8h 25m
1 stop
WestJet Logo
7:35 p.m. - 5:35 p.m.
SEA
-
YOW
19h 00m
2 stops
C$ 438WestJet
Mon, 11 May - Fri, 15 May
WestJet Logo
5:40 a.m. - 2:19 p.m.
YOW
-
SEA
11h 39m
2 stops
WestJet Logo
10:30 a.m. - 12:20 a.m.
SEA
-
YOW
34h 50m
2 stops
C$ 441WestJet
Fri, 24 Apr - Sun, 3 May
WestJet Logo
5:40 a.m. - 2:19 p.m.
YOW
-
SEA
11h 39m
2 stops
WestJet Logo
10:30 a.m. - 11:35 a.m.
SEA
-
YOW
22h 05m
2 stops
C$ 442WestJet
Fri, 24 Apr - Sun, 3 May

Air Canada flights from Ottawa to Seattle

Our best Air Canada deals on Ottawa to Seattle flight tickets
Air Canada
14 Apr
YOW2:50 p.m.Ottawa
11h 03m
2 stops
SEA10:53 p.m.Seattle/Tacoma Intl
21 Apr
SEA8:00 p.m.Seattle/Tacoma Intl
7h 45m
1 stop
YOW6:45 a.m.Ottawa
C$ 453
Air Canada
5 Apr
YOW7:45 a.m.Ottawa
10h 20m
1 stop
SEA3:05 p.m.Seattle/Tacoma Intl
8 Apr
SEA8:00 p.m.Seattle/Tacoma Intl
7h 45m
1 stop
YOW6:45 a.m.Ottawa
C$ 454
Air Canada
14 Apr
YOW2:50 p.m.Ottawa
11h 03m
2 stops
SEA10:53 p.m.Seattle/Tacoma Intl
21 Apr
SEA5:40 a.m.Seattle/Tacoma Intl
9h 56m
2 stops
YOW6:36 p.m.Ottawa
C$ 469

United Airlines flights from Ottawa to Seattle

Our best United Airlines deals on Ottawa to Seattle flight tickets
United Airlines
8 Apr
YOW6:25 a.m.Ottawa
15h 35m
1 stop
SEA7:00 p.m.Seattle/Tacoma Intl
14 Apr
SEA11:59 p.m.Seattle/Tacoma Intl
11h 00m
1 stop
YOW1:59 p.m.Ottawa
C$ 476
United Airlines
8 Apr
YOW2:40 p.m.Ottawa
11h 16m
2 stops
SEA10:56 p.m.Seattle/Tacoma Intl
14 Apr
SEA7:37 p.m.Seattle/Tacoma Intl
15h 22m
2 stops
YOW1:59 p.m.Ottawa
C$ 477
United Airlines
9 Apr
YOW10:44 a.m.Ottawa
16h 50m
1 stop
SEA12:34 a.m.Seattle/Tacoma Intl
12 Apr
SEA11:59 p.m.Seattle/Tacoma Intl
11h 00m
1 stop
YOW1:59 p.m.Ottawa
C$ 482

momondo Fare Finder

 
Customize your flight search to find flights from Ottawa to Seattle 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 96,600 searches. Data last updated 4 March 2026.
Use the filters below to find and compare flights from Ottawa to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Tue 19/5

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

1 stop8h 25m

Seattle/Tacoma Intl

Tue 2/6

7:35 p.m.-5:35 a.m.

1 stop7h 00m

C$ 390

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Wed 29/4

6:25 p.m.-6:45 p.m.

2 stops27h 20m

Seattle/Tacoma Intl

Wed 6/5

7:35 p.m.-5:35 a.m.

1 stop7h 00m

C$ 394

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Tue 14/4

5:40 a.m.-2:19 p.m.

2 stops11h 39m

Seattle/Tacoma Intl

Fri 17/4

3:10 p.m.-12:39 a.m.

2 stops30h 29m

C$ 402

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Mon 15/6

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

1 stop8h 25m

Seattle/Tacoma Intl

Mon 22/6

7:35 p.m.-5:35 a.m.

1 stop7h 00m

C$ 417

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Fri 24/4

5:40 a.m.-2:19 p.m.

2 stops11h 39m

Seattle/Tacoma Intl

Sun 3/5

10:30 a.m.-12:30 p.m.

2 stops23h 00m

C$ 432

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Mon 11/5

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

1 stop8h 25m

Seattle/Tacoma Intl

Fri 15/5

10:30 a.m.-5:15 p.m.

1 stop27h 45m

C$ 434

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Tue 14/4

5:45 p.m.-2:19 p.m.

1 stop23h 34m

Seattle/Tacoma Intl

Fri 17/4

3:10 p.m.-12:39 a.m.

2 stops30h 29m

C$ 436

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Mon 11/5

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

1 stop8h 25m

Seattle/Tacoma Intl

Fri 15/5

7:35 p.m.-5:35 p.m.

2 stops19h 00m

C$ 438

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Fri 24/4

5:40 a.m.-2:19 p.m.

2 stops11h 39m

Seattle/Tacoma Intl

Sun 3/5

10:30 a.m.-12:20 a.m.

2 stops34h 50m

C$ 441

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Fri 24/4

5:40 a.m.-2:19 p.m.

2 stops11h 39m

Seattle/Tacoma Intl

Sun 3/5

10:30 a.m.-11:35 a.m.

2 stops22h 05m

C$ 442

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Seattle from

How to get the cheapest flight ticket from Ottawa to Seattle

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 Seattle?

If you aren’t able to travel to Seattle during the month of January, then flying in September is also cheap. Prices for this month can be found on momondo for an average of C$ 461.

How far in advance should I book a flight to Seattle?

You are more likely to see cheaper flights to Seattle from Ottawa when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around C$ 546 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Ottawa for as low as C$ 423 on momondo.

Can stopping save me money on Ottawa to Seattle flights?

You could potentially save up to 72% on your flight if you consider stops on a Ottawa to Seattle flight.

How have Ottawa to Seattle flight prices changed over time?

As of March 2026, prices for Ottawa to Seattle flights are approximately 62% cheaper when compared to flights at the same time last year.

When to book flights from Ottawa to Seattle

Are you open to changing your travel dates? Check out the ideal times to fly from Ottawa to Seattle according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Ottawa to Seattle (YOW to SEA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ottawa to Seattle

Fastest flight time

8h 25m

Direct flights

None
The fastest flight from Ottawa to Seattle takes 8h 25m
There are no direct flights from Ottawa to Seattle. There are no popular flight routes from Ottawa to Seattle.
Search flight deals

  • How far is Ottawa to Seattle/Tacoma Intl by plane?

    The distance between Ottawa and Seattle/Tacoma Intl is about 3521.0 km. 8h 25m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Ottawa Airport to Seattle/Tacoma Intl Airport?

    Prices for flights from Ottawa Airport to Seattle/Tacoma Intl Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Ottawa Airport to Seattle/Tacoma Intl Airport?

  • How old do you have to be to fly from Ottawa Airport to Seattle/Tacoma Intl Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ottawa Airport to Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The travel and health documents you'll need for your trip to Seattle/Tacoma Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Ottawa to Seattle?

Best airlines flying from Ottawa to Seattle

Compare and see reviews for airlines that fly from Ottawa to Seattle with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom C$ 262Free CancellationRating
7.4
9,382 reviews
Search United Airlines flights
Air CanadaPriceFrom C$ 328Free CancellationRating
7.1
10,775 reviews
Search Air Canada flights
WestJetPriceFrom C$ 341Free CancellationRating
7.2
3,281 reviews
Search WestJet flights

Travelling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Lynnwood
Leavenworth
SeaTac
Tacoma
Marysville
Redmond
Kirkland
Puyallup
Tukwila
Olympia
Ocean Shores
Ellensburg
Bainbridge Island
Gig Harbor
Renton
Centralia
Kent
Edmonds
Federal Way
Shelton

Why use momondo?

Why should I use momondo to find a flight deal from Ottawa to Seattle?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Seattle from Ottawa.

Can I find flights from Ottawa to Seattle with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Seattle from Ottawa with this policy.

How can momondo help me find flights from Ottawa to Seattle?

momondo provides multiple filters to help you find the best flight to Seattle from Ottawa. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Ottawa to Seattle right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Ottawa to Seattle flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your Seattle trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Fri 3/4
Fri 10/4
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States