$366+ Cheap flights from Seattle (SEA) to Saint John (YSJ)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/8. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YSJ
Mar 30 — Apr 61
1 adult, Economy
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1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Seattle to St John
Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to St John (YSJ). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated March 25, 2025.
Most accurate provider | eDreams 3 stars |
|---|---|
Most trusted provider | eDreams 3 stars |
Round-trip from | $724 (Air Canada) |
One-way from | $366 (United Airlines) |
Find flight deals from Seattle to St John
Cheapest flights from Seattle to St JohnExplore the most affordable flight options available from Seattle to St John. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 25, 2025.
Explore the most affordable flight options available from Seattle to St John. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 25, 2025.
This Air Canada deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/711:40 amSEA - YSJ
1 stop8h 09mAir Canada
Wed 5/145:50 amYSJ - SEA
1 stop9h 01mAir Canada
Deal found 3/23![Air Canada logo]()
$724
This United Airlines deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/86:15 amSEA - YSJ
2 stops24h 34mUnited Airlines
Thu 5/1511:35 amYSJ - SEA
2 stops30h 08mUnited Airlines
Deal found 3/24![United Airlines logo]()
$852
This Mytrip deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/73:39 pmSEA - YSJ
3 stops15h 41mMultiple Airlines
Wed 5/142:45 pmYSJ - SEA
2 stops33h 43mMultiple Airlines
Deal found 3/23![Multiple Airlines logo]()
$1,000
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle to St 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, Cheapflights users made 2,558,603 searches. Data last updated March 25, 2025.
Use the filters below to find and compare flights from Seattle to Saint John that are best for you.
Fly from
Seattle
Fly to
St John
Route
Depart
Return
Price
SeattleSaint John
SEA - YSJ
SEAYSJ
Seattle/Tacoma Intl
Wed 5/7
11:40 am-11:49 pm
1 stop8h 09m
Saint John
Wed 5/14
5:50 am-10:51 am
1 stop9h 01m
$724
SeattleSaint John
SEA - YSJ
SEAYSJ
Seattle/Tacoma Intl
Thu 5/8
6:15 am-10:49 am
2 stops24h 34m
Saint John
Thu 5/15
11:35 am-1:43 pm
2 stops30h 08m
$852
SeattleSaint John
SEA - YSJ
SEAYSJ
Seattle/Tacoma Intl
Wed 5/7
3:39 pm-11:20 am
3 stops15h 41m
Saint John
Wed 5/14
2:45 pm-8:28 pm
2 stops33h 43m
$1,000
SeattleSaint John
SEA - YSJ
SEAYSJ
Seattle/Tacoma Intl
Thu 5/8
6:15 am-10:49 am
2 stops24h 34m
$366
- Most accurate provider: When it comes to deals on Seattle-Saint John flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Seattle-Saint John flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Seattle-Saint John flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Seattle-Saint John flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Saint John flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Seattle to St John
Have a flexible travel schedule? Discover the best time to fly to St John from Seattle with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Seattle to Saint John
Rainfall in St John by month
Plan your trip to St John by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Saint John ranges from 3.2 - 5.3 inches per month. November is typically the wettest month, when rainfall can reach 5.3 in. August is typically the driest time to visit Saint John when rainfall is around 3.2 in.
Temperature in St John by month
Plan your trip to St John by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Saint John, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 17.6 F).
Reviews of airlines servicing St John
Get insights into the airlines that provide service to St John. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St John. Reviews last updated March 25, 2025.
See what other customers who have flown with United Airlines and Air Canada from Seattle to Saint John have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.0
Overall
7.4
Crew
8.1
Food
6.6
Boarding
7.7
Comfort
7.3
Reviews
1 / 20
4.0
OkayThomas,Mar 2025
SFO - TPE
Entertainment
7.0
Overall
7.4
Crew
8.1
Food
6.6
Boarding
7.7
Comfort
7.3
Reviews
1 / 20
4.0
OkayThomas,Mar 2025
SFO - TPE
Entertainment
7.0
Overall
7.4
Crew
8.1
Food
6.6
Boarding
7.7
Comfort
7.3
Reviews
1 / 20
4.0
OkayThomas,Mar 2025
SFO - TPE