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$443+ Cheap flights from Saint John (YSJ) to Boston (BOS)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/3. Fares are subject to change and may not be available on all flights or dates of travel.
YSJ — BOS
Aug 18 — Aug 251
Mon 8/18
Mon 8/25
1 adult, Economy
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Cheap flight deals from St John to Boston

Discover tips and strategies to find the most affordable flight options for your journey from St John (YSJ) to Boston (BOS). 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 August 13, 2025.

Round-trip from

$443
(Air Canada)
From Saint John to Boston Logan Intl
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Find flight deals from St John to Boston

Cheapest flights from St John to Boston
Explore the most affordable flight options available from St John to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 13, 2025.

This Air Canada deal was found by Cheapflights users on 8/11. 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 9/35:55 amYSJ - BOS
1 stop6h 34mAir Canada
Sun 9/76:00 amBOS - YSJ
1 stop3h 49mAir Canada
Deal found 8/11$443
This Air Canada deal was found by Cheapflights users on 8/13. 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 9/105:55 amYSJ - BOS
1 stop5h 00mAir Canada
Wed 9/1710:40 amBOS - YSJ
1 stop6h 06mAir Canada
Deal found 8/13$471
This Air Canada deal was found by Cheapflights users on 8/10. 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.
Thu 9/256:40 pmYSJ - BOS
1 stop4h 59mAir Canada
Thu 10/26:00 amBOS - YSJ
1 stop3h 49mAir Canada
Deal found 8/10$488
This Air Canada deal was found by Cheapflights users on 8/12. 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.
Fri 9/2611:30 amYSJ - BOS
2 stops12h 09mAir Canada
Fri 10/36:00 amBOS - YSJ
1 stop3h 49mAir Canada
Deal found 8/12$493
This United Airlines deal was found by Cheapflights users on 8/13. 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.
Wed 9/105:55 amYSJ - BOS
2 stops8h 29mUnited Airlines
Wed 9/177:10 amBOS - YSJ
2 stops9h 36mUnited Airlines
Deal found 8/13$560
This United Airlines deal was found by Cheapflights users on 8/10. 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 9/255:55 amYSJ - BOS
2 stops10h 18mUnited Airlines
Thu 10/25:30 amBOS - YSJ
2 stops11h 10mUnited Airlines
Deal found 8/10$583
This Mytrip deal was found by Cheapflights users on 8/10. 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.
Thu 9/2512:00 pmYSJ - BOS
3 stops36h 57mMultiple Airlines
Thu 10/22:53 pmBOS - YSJ
2 stops18h 07mMultiple Airlines
Deal found 8/10$819

Cheapflights Fare Finder

 
Customize your flight search to find flights from St John to Boston 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 August 13, 2025.
Use the filters below to find and compare flights from Saint John to Boston that are best for you.

Fly from

St John

Fly to

Boston

Route

Depart

Return

Price

Saint JohnBoston

YSJ - BOS

YSJBOS

Saint John

Wed 9/3

5:55 am-11:29 am

1 stop6h 34m

Boston Logan Intl

Sun 9/7

6:00 am-10:49 am

1 stop3h 49m

$443

Saint JohnBoston

YSJ - BOS

YSJBOS

Saint John

Wed 9/10

5:55 am-9:55 am

1 stop5h 00m

Boston Logan Intl

Wed 9/17

10:40 am-5:46 pm

1 stop6h 06m

$471

Saint JohnBoston

YSJ - BOS

YSJBOS

Saint John

Fri 9/26

5:55 am-9:55 am

1 stop5h 00m

Boston Logan Intl

Fri 10/3

6:00 am-10:49 am

1 stop3h 49m

$488

Saint JohnBoston

YSJ - BOS

YSJBOS

Saint John

Thu 9/25

6:40 pm-10:39 pm

1 stop4h 59m

Boston Logan Intl

Thu 10/2

6:00 am-10:49 am

1 stop3h 49m

$488

Saint JohnBoston

YSJ - BOS

YSJBOS

Saint John

Wed 9/10

5:55 am-1:24 pm

2 stops8h 29m

Boston Logan Intl

Wed 9/17

7:10 am-5:46 pm

2 stops9h 36m

$560

Saint JohnBoston

YSJ - BOS

YSJBOS

Saint John

Thu 9/25

5:55 am-3:13 pm

2 stops10h 18m

Boston Logan Intl

Thu 10/2

5:30 am-5:40 pm

2 stops11h 10m

$583

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/11

Best time to book a flight from St John to Boston

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

What is the cheapest month to book a flight from Saint John to Boston?

Currently, January is the cheapest month in which you can book a flight from Saint John to Boston (average of $218). Flying from Saint John to Boston in July is currently the most expensive (average of $311). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

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

  • What is the cheapest airline to fly from Saint John to Boston round-trip?

    Our cheapest airline available from Saint John to Boston is Air Canada. Our recent data shows that you can find tickets from as low as $443 on this airline.

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

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

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

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

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

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

  • What is the cheapest month to book a flight from Saint John to Boston?

    Currently, January is the cheapest month in which you can book a flight from Saint John to Boston (average of $218). Flying from Saint John to Boston in July is currently the most expensive (average of $311). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Boston?

Book flights to Boston if you plan to visit one of these locations
Cambridge
Medford
Watertown
Hampton Beach
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Seabrook
Lowell
Lincoln
Smithfield
Cranston
Chestnut Hill
Warwick
Peabody
Quincy
York Beach
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Swansea
Saugus
Burlington
Braintree

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