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Cheap flights from Seattle to Saint John from $291

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 Saint John 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 Saint John

Cheap round-trip flights

Enter your travel dates to find the best prices.
Air Canada Logo
7:20 pm - 11:55 am
SEA
-
YSJ
12h 35m
2 stops
Air Canada Logo
5:40 am - 2:22 pm
YSJ
-
SEA
12h 42m
2 stops
$843Air Canada
Tue, Jun 23 - Tue, Jun 30
Multiple Airlines Logo
10:30 am - 10:00 am
SEA
-
YSJ
19h 30m
3 stops
Multiple Airlines Logo
11:30 am - 6:45 pm
YSJ
-
SEA
35h 15m
3 stops
$849Multiple Airlines
Tue, Jun 23 - Tue, Jun 30
Air Canada Logo
3:00 pm - 11:55 am
SEA
-
YSJ
16h 55m
2 stops
Air Canada Logo
5:00 am - 2:22 pm
YSJ
-
SEA
13h 22m
2 stops
$862Air Canada
Fri, Jul 10 - Tue, Jul 14
Air Canada Logo
10:45 am - 11:55 am
SEA
-
YSJ
21h 10m
2 stops
Air Canada Logo
12:50 pm - 10:42 pm
YSJ
-
SEA
13h 52m
2 stops
$863Air Canada
Mon, Jul 20 - Thu, Jul 23
Air Canada Logo
10:45 am - 11:55 am
SEA
-
YSJ
21h 10m
2 stops
Air Canada Logo
12:50 pm - 9:07 pm
YSJ
-
SEA
12h 17m
1 stop
$882Air Canada
Mon, Jul 20 - Thu, Jul 23
Multiple Airlines Logo
10:30 am - 10:00 am
SEA
-
YSJ
19h 30m
2 stops
Multiple Airlines Logo
11:30 am - 6:45 pm
YSJ
-
SEA
35h 15m
3 stops
$884Multiple Airlines
Tue, Jun 23 - Tue, Jun 30
Air Canada Logo
7:20 pm - 11:27 am
SEA
-
YSJ
12h 07m
2 stops
Air Canada Logo
12:20 pm - 9:08 pm
YSJ
-
SEA
12h 48m
1 stop
$902Air Canada
Fri, Jun 5 - Fri, Jun 12
Air Canada Logo
7:20 pm - 11:27 am
SEA
-
YSJ
12h 07m
2 stops
Air Canada Logo
12:20 pm - 10:40 pm
YSJ
-
SEA
14h 20m
2 stops
$921Air Canada
Fri, Jun 5 - Fri, Jun 12
United Airlines Logo
8:00 am - 11:50 pm
SEA
-
YSJ
11h 50m
1 stop
United Airlines Logo
5:40 am - 9:07 pm
YSJ
-
SEA
19h 27m
1 stop
$990United Airlines
Sat, Jun 20 - Sat, Jun 27
United Airlines Logo
8:00 am - 11:50 pm
SEA
-
YSJ
11h 50m
1 stop
United Airlines Logo
5:40 am - 7:06 pm
YSJ
-
SEA
17h 26m
2 stops
$1,044United Airlines
Sat, Jun 20 - Sat, Jun 27

Air Canada flights from Seattle to Saint John

Our best Air Canada deals on Seattle to Saint John flight tickets
Air Canada
Jun 23
SEA7:20 pmSeattle/Tacoma Intl
12h 35m
2 stops
YSJ11:55 amSaint John
Jun 30
YSJ5:40 amSaint John
12h 42m
2 stops
SEA2:22 pmSeattle/Tacoma Intl
$843
Air Canada
Jul 10
SEA3:00 pmSeattle/Tacoma Intl
16h 55m
2 stops
YSJ11:55 amSaint John
Jul 14
YSJ5:00 amSaint John
13h 22m
2 stops
SEA2:22 pmSeattle/Tacoma Intl
$862
Air Canada
Jul 20
SEA10:45 amSeattle/Tacoma Intl
21h 10m
2 stops
YSJ11:55 amSaint John
Jul 23
YSJ12:50 pmSaint John
13h 52m
2 stops
SEA10:42 pmSeattle/Tacoma Intl
$863

United Airlines flights from Seattle to Saint John

Our best United Airlines deals on Seattle to Saint John flight tickets
United Airlines
Jun 20
SEA8:00 amSeattle/Tacoma Intl
11h 50m
1 stop
YSJ11:50 pmSaint John
Jun 27
YSJ5:40 amSaint John
19h 27m
1 stop
SEA9:07 pmSeattle/Tacoma Intl
$990
United Airlines
Jun 20
SEA8:00 amSeattle/Tacoma Intl
11h 50m
1 stop
YSJ11:50 pmSaint John
Jun 27
YSJ5:40 amSaint John
17h 26m
2 stops
SEA7:06 pmSeattle/Tacoma Intl
$1,044
United Airlines
Jun 20
SEA6:08 amSeattle/Tacoma Intl
13h 42m
2 stops
YSJ11:50 pmSaint John
Jun 27
YSJ5:40 amSaint John
16h 19m
2 stops
SEA5:59 pmSeattle/Tacoma Intl
$1,715

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Saint John 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 Saint John that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleSaint John

SEA - YSJ

SEAYSJ

Seattle/Tacoma Intl

Tue 6/23

7:20 pm-11:55 am

2 stops12h 35m

Saint John

Tue 6/30

5:40 am-2:22 pm

2 stops12h 42m

$843

SeattleSaint John

SEA - YSJ

SEAYSJ

Seattle/Tacoma Intl

Tue 6/23

10:30 am-10:00 am

3 stops19h 30m

Saint John

Tue 6/30

11:30 am-6:45 pm

3 stops35h 15m

$849

SeattleSaint John

SEA - YSJ

SEAYSJ

Seattle/Tacoma Intl

Fri 7/10

3:00 pm-11:55 am

2 stops16h 55m

Saint John

Tue 7/14

5:00 am-2:22 pm

2 stops13h 22m

$862

SeattleSaint John

SEA - YSJ

SEAYSJ

Seattle/Tacoma Intl

Mon 7/20

10:45 am-11:55 am

2 stops21h 10m

Saint John

Thu 7/23

12:50 pm-10:42 pm

2 stops13h 52m

$863

SeattleSaint John

SEA - YSJ

SEAYSJ

Seattle/Tacoma Intl

Mon 7/20

10:45 am-11:55 am

2 stops21h 10m

Saint John

Thu 7/23

12:50 pm-9:07 pm

1 stop12h 17m

$882

SeattleSaint John

SEA - YSJ

SEAYSJ

Seattle/Tacoma Intl

Tue 6/23

10:30 am-10:00 am

2 stops19h 30m

Saint John

Tue 6/30

11:30 am-6:45 pm

3 stops35h 15m

$884
Quickest round-trip

SeattleSaint John

SEA - YSJ

SEAYSJ

Seattle/Tacoma Intl

Fri 6/5

7:20 pm-11:27 am

2 stops12h 07m

Saint John

Fri 6/12

12:20 pm-9:08 pm

1 stop12h 48m

$902

SeattleSaint John

SEA - YSJ

SEAYSJ

Seattle/Tacoma Intl

Fri 6/5

7:20 pm-11:27 am

2 stops12h 07m

Saint John

Fri 6/12

12:20 pm-10:40 pm

2 stops14h 20m

$921

SeattleSaint John

SEA - YSJ

SEAYSJ

Seattle/Tacoma Intl

Sat 6/20

8:00 am-11:50 pm

1 stop11h 50m

Saint John

Sat 6/27

5:40 am-9:07 pm

1 stop19h 27m

$990

SeattleSaint John

SEA - YSJ

SEAYSJ

Seattle/Tacoma Intl

Sat 6/20

8:00 am-11:50 pm

1 stop11h 50m

Saint John

Sat 6/27

5:40 am-7:06 pm

2 stops17h 26m

$1,044

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
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See travel insights to Saint John from

How to get the cheapest flight ticket from Seattle to Saint John

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 airline that flies from Seattle/Tacoma Intl to Saint John?

United Airlines is the most popular carrier operating from Seattle/Tacoma Intl to Saint John

When to book flights from Seattle to Saint John

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

Cheap Seattle to Saint John (SEA to YSJ) flight deals and tips

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

Fastest flight time

18h 41m

Direct flights

None
The fastest flight from Seattle to Saint John takes 18h 41m
There are no direct flights from Seattle to Saint John. There are no popular flight routes from Seattle to Saint John.
Search flight deals

Frequently asked questions about flying from Seattle to Saint John

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

    Saint John is 2622.7 mi away from Seattle/Tacoma Intl. In terms of flight time, this usually takes a little over 18h 41m.

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

    Prices for flights from Seattle/Tacoma Intl Airport to Saint John Airport are updated daily.

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Saint John 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 Saint John Airport.

  • What documentation or ID do you need to fly to Saint John Airport?

    The travel and health documents you'll need for your trip to Saint John 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 Saint John Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Traveling to a place near Saint John?

Book flights to Saint John if you plan to visit one of these locations
Bridgetown
Middleton

Why use momondo?

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

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 Saint John from Seattle.

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

Flights from Seattle to Saint John 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 Saint John?

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

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

Yes momondo offers price alerts on flights to Saint John from Seattle. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Saint John trip

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