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Cheap flights from Seattle to Saint John from $343

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 7/27. 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
1 adult, Economy, 0 bags

Find the cheapest flights from Seattle to Saint John

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
10:30 am - 10:00 am
SEA
-
YSJ
19h 30m
2 stops
Multiple Airlines Logo
10:45 am - 6:45 pm
YSJ
-
SEA
12h 00m
2 stops
$660Multiple Airlines
Thu, Sep 17 - Mon, Sep 21
Multiple Airlines Logo
10:30 am - 10:00 am
SEA
-
YSJ
19h 30m
2 stops
Multiple Airlines Logo
10:45 am - 6:45 pm
YSJ
-
SEA
36h 00m
3 stops
$721Multiple Airlines
Thu, Sep 17 - Mon, Sep 21
Multiple Airlines Logo
10:30 am - 10:00 am
SEA
-
YSJ
19h 30m
2 stops
Multiple Airlines Logo
10:45 am - 7:13 pm
YSJ
-
SEA
12h 28m
1 stop
$773Multiple Airlines
Thu, Sep 17 - Mon, Sep 21
Multiple Airlines Logo
10:30 am - 10:00 am
SEA
-
YSJ
19h 30m
3 stops
Multiple Airlines Logo
10:45 am - 6:45 pm
YSJ
-
SEA
36h 00m
3 stops
$784Multiple Airlines
Thu, Sep 17 - Mon, Sep 21
Air Canada Logo
5:40 am - 11:51 pm
SEA
-
YSJ
14h 11m
2 stops
Air Canada Logo
5:40 am - 2:22 pm
YSJ
-
SEA
12h 42m
2 stops
$790Air Canada
Thu, Sep 17 - Mon, Sep 21
Multiple Airlines Logo
7:52 am - 10:00 am
SEA
-
YSJ
22h 08m
1 stop
Multiple Airlines Logo
10:45 am - 7:13 pm
YSJ
-
SEA
12h 28m
1 stop
$807Multiple Airlines
Thu, Sep 17 - Mon, Sep 21
Air Canada Logo
8:00 am - 11:51 pm
SEA
-
YSJ
11h 51m
1 stop
Air Canada Logo
5:40 am - 2:22 pm
YSJ
-
SEA
12h 42m
2 stops
$809Air Canada
Thu, Sep 17 - Mon, Sep 21
Air Canada Logo
8:00 am - 11:51 pm
SEA
-
YSJ
11h 51m
1 stop
Air Canada Logo
12:50 pm - 9:04 pm
YSJ
-
SEA
12h 14m
1 stop
$828Air Canada
Thu, Sep 17 - Mon, Sep 21
Air Canada Logo
7:05 pm - 10:25 am
SEA
-
YSJ
11h 20m
2 stops
Air Canada Logo
5:25 am - 2:37 pm
YSJ
-
SEA
13h 12m
2 stops
$902Air Canada
Mon, Dec 7 - Thu, Dec 10
Air Canada Logo
7:20 pm - 11:55 am
SEA
-
YSJ
12h 35m
2 stops
Air Canada Logo
12:50 pm - 10:42 pm
YSJ
-
SEA
13h 52m
2 stops
$906Air Canada
Thu, Jul 23 - Thu, Jul 30

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Air Canada flights from Seattle to Saint John

Our best Air Canada deals on Seattle to Saint John flight tickets
Air Canada
Sep 17
SEA5:40 amSeattle/Tacoma Intl
14h 11m
2 stops
YSJ11:51 pmSaint John
Sep 21
YSJ5:40 amSaint John
12h 42m
2 stops
SEA2:22 pmSeattle/Tacoma Intl
$790
Air Canada
Sep 17
SEA8:00 amSeattle/Tacoma Intl
11h 51m
1 stop
YSJ11:51 pmSaint John
Sep 21
YSJ5:40 amSaint John
12h 42m
2 stops
SEA2:22 pmSeattle/Tacoma Intl
$809
Air Canada
Sep 17
SEA8:00 amSeattle/Tacoma Intl
11h 51m
1 stop
YSJ11:51 pmSaint John
Sep 21
YSJ12:50 pmSaint John
12h 14m
1 stop
SEA9:04 pmSeattle/Tacoma Intl
$828

United Airlines flights from Seattle to Saint John

Our best United Airlines deals on Seattle to Saint John flight tickets
United Airlines
Sep 17
SEA5:13 pmSeattle/Tacoma Intl
18h 46m
2 stops
YSJ3:59 pmSaint John
Sep 21
YSJ4:40 pmSaint John
30h 28m
3 stops
SEA7:08 pmSeattle/Tacoma Intl
$1,004
United Airlines
Sep 17
SEA5:00 amSeattle/Tacoma Intl
14h 51m
2 stops
YSJ11:51 pmSaint John
Sep 21
YSJ4:30 pmSaint John
30h 38m
3 stops
SEA7:08 pmSeattle/Tacoma Intl
$1,033
United Airlines
Jul 27
SEA8:00 amSeattle/Tacoma Intl
11h 50m
1 stop
YSJ11:50 pmSaint John
Aug 3
YSJ4:40 pmSaint John
21h 00m
2 stops
SEA9:40 amSeattle/Tacoma Intl
$1,038

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 June 12, 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

Thu 9/17

10:30 am-10:00 am

2 stops19h 30m

Saint John

Mon 9/21

10:45 am-6:45 pm

2 stops12h 00m

$660

SeattleSaint John

SEA - YSJ

SEAYSJ

Seattle/Tacoma Intl

Thu 9/17

10:30 am-10:00 am

2 stops19h 30m

Saint John

Mon 9/21

10:45 am-6:45 pm

3 stops36h 00m

$721

SeattleSaint John

SEA - YSJ

SEAYSJ

Seattle/Tacoma Intl

Thu 9/17

10:30 am-10:00 am

2 stops19h 30m

Saint John

Mon 9/21

10:45 am-7:13 pm

1 stop12h 28m

$773

SeattleSaint John

SEA - YSJ

SEAYSJ

Seattle/Tacoma Intl

Thu 9/17

10:30 am-10:00 am

3 stops19h 30m

Saint John

Mon 9/21

10:45 am-6:45 pm

3 stops36h 00m

$784

SeattleSaint John

SEA - YSJ

SEAYSJ

Seattle/Tacoma Intl

Thu 9/17

5:40 am-11:51 pm

2 stops14h 11m

Saint John

Mon 9/21

5:40 am-2:22 pm

2 stops12h 42m

$790

SeattleSaint John

SEA - YSJ

SEAYSJ

Seattle/Tacoma Intl

Thu 9/17

7:52 am-10:00 am

1 stop22h 08m

Saint John

Mon 9/21

10:45 am-7:13 pm

1 stop12h 28m

$807

SeattleSaint John

SEA - YSJ

SEAYSJ

Seattle/Tacoma Intl

Thu 9/17

8:00 am-11:51 pm

1 stop11h 51m

Saint John

Mon 9/21

5:40 am-2:22 pm

2 stops12h 42m

$809
Quickest round-trip

SeattleSaint John

SEA - YSJ

SEAYSJ

Seattle/Tacoma Intl

Thu 9/17

8:00 am-11:51 pm

1 stop11h 51m

Saint John

Mon 9/21

12:50 pm-9:04 pm

1 stop12h 14m

$828

SeattleSaint John

SEA - YSJ

SEAYSJ

Seattle/Tacoma Intl

Mon 12/7

7:05 pm-10:25 am

2 stops11h 20m

Saint John

Thu 12/10

5:25 am-2:37 pm

2 stops13h 12m

$902

SeattleSaint John

SEA - YSJ

SEAYSJ

Seattle/Tacoma Intl

Thu 7/23

7:20 pm-11:55 am

2 stops12h 35m

Saint John

Thu 7/30

12:50 pm-10:42 pm

2 stops13h 52m

$906

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 resultsSorted by cheapest first
1
2

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?

Air Canada 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 46m

Direct flights

None
The fastest flight from Seattle to Saint John takes 18h 46m
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 46m.

  • 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.

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