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St John

$205+ Cheap flights from Boston (BOS) 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 9/27. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — YSJ
Aug 27 — Sep 31
Thu 8/27
Thu 9/3
1 adult, Economy
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Cheap flight deals from Boston to St John

Cheapest flights from Boston to St John
Explore the most affordable flight options available from Boston to St John. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 28, 2026.

This Kiwi.com deal was found by Cheapflights users on 7/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/33:55 pm
BOS
-
YSJ
2 stops17h 05m
Multiple Airlines
Fri 9/1810:45 am
YSJ
-
BOS
1 stop8h 50m
Multiple Airlines
Deal found 7/27$440
This Mytrip deal was found by Cheapflights users on 7/24. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/83:35 pm
BOS
-
YSJ
2 stops17h 25m
Multiple Airlines
Tue 9/155:00 am
YSJ
-
BOS
1 stop14h 04m
Multiple Airlines
Deal found 7/24$452
This Kiwi.com deal was found by Cheapflights users on 7/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/77:00 am
BOS
-
YSJ
2 stops15h 15m
Multiple Airlines
Mon 9/1410:45 am
YSJ
-
BOS
1 stop8h 50m
Multiple Airlines
Deal found 7/23$644
This Air Canada deal was found by Cheapflights users on 7/23. 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.
Sun 8/3010:40 am
BOS
-
YSJ
1 stop4h 20m
Air Canada
Wed 9/212:50 pm
YSJ
-
BOS
1 stop6h 32m
Air Canada
Deal found 7/23$647

Find flight deals from Boston to St John

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) 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 July 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$440
(Kiwi.com)

One-way from

$205
(Kiwi.com)
Provider with most accurate pricing for Boston Logan Intl-Saint John flight deals.
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Provider most trusted by Cheapflights users for Boston Logan Intl-Saint John flights.
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From Boston Logan Intl to Saint John
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One-way flight from Boston Logan Intl to Saint John
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Boston 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 July 28, 2026.
Use the filters below to find and compare flights from Boston to Saint John that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BostonSaint John

BOS - YSJ

BOSYSJ

Boston Logan Intl

Thu 9/3

10:05 am-10:00 am

1 stop22h 55m

Saint John

Fri 9/18

10:45 am-6:35 pm

1 stop8h 50m

$440

BostonSaint John

BOS - YSJ

BOSYSJ

Boston Logan Intl

Tue 9/8

3:35 pm-10:00 am

2 stops17h 25m

Saint John

Tue 9/15

5:00 am-9:26 pm

2 stops17h 26m

$459

BostonSaint John

BOS - YSJ

BOSYSJ

Boston Logan Intl

Sun 8/30

10:40 am-4:00 pm

1 stop4h 20m

Saint John

Wed 9/2

12:50 pm-9:27 pm

2 stops9h 37m

$656
Quickest round-trip

BostonSaint John

BOS - YSJ

BOSYSJ

Boston Logan Intl

Mon 12/21

5:30 am-10:25 am

1 stop3h 55m

Saint John

Mon 12/28

11:05 am-2:53 pm

1 stop4h 48m

$877

BostonSaint John

BOS - YSJ

BOSYSJ

Boston Logan Intl

Mon 9/7

10:40 am-4:00 pm

1 stop4h 20m

Saint John

Mon 9/14

4:40 pm-9:26 pm

1 stop5h 46m

$877

BostonSaint John

BOS - YSJ

BOSYSJ

Boston Logan Intl

Sun 12/20

5:30 am-10:25 am

1 stop3h 55m

Saint John

Mon 12/28

11:05 am-2:53 pm

1 stop4h 48m

$877

BostonSaint John

BOS - YSJ

BOSYSJ

Boston Logan Intl

Tue 9/8

10:40 am-3:59 pm

1 stop4h 19m

Saint John

Tue 9/15

4:40 pm-9:26 pm

1 stop5h 46m

$877
Cheapest one-way

BostonSaint John

BOS - YSJ

BOSYSJ

Boston Logan Intl

Sun 9/27

7:00 am-10:00 am

1 stop26h 00m

$205

BostonSaint John

BOS - YSJ

BOSYSJ

Boston Logan Intl

Tue 8/11

8:30 pm-10:00 am

1 stop12h 30m

$219

BostonSaint John

BOS - YSJ

BOSYSJ

Boston Logan Intl

Sun 8/9

7:10 am-10:00 am

1 stop25h 50m

$228

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/24

Showing 1-10 of 13 resultsSorted by cheapest first
1
2
  • Most accurate provider: When it comes to deals on Boston-Saint John flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Boston-Saint John flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Boston-Saint John flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Boston-Saint John flights, Cheapflights users trust FlightHub the most. FlightHub 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 Boston-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 Boston to St John

Have a flexible travel schedule? Discover the best time to fly to St John from Boston 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.

Related info for your journey

Find useful and relevant information for your journey from Boston to St John. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • Can I find deals for flights from Boston to St John that include hotel bookings?

    Yes. In addition to deals on Boston to St John flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Boston to St John?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boston to St John.

  • Can I find deals for business class flights from Boston to St John?

    Yes. Cheapflights offers flight deals from Boston to St John by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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