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Cheap flights from Boston to Saint John from C$ 397

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 28/11. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — YSJ
27 Nov — 4 Dec1
1 adult
1 adult, Economy, 0 bags

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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 28 October 2025.

Tue 9/1210:15 a.m.BOS - YSJ
1 stop4h 18mAir Canada
Fri 12/124:15 p.m.YSJ - BOS
1 stop4h 27mAir Canada
Deal found 27/10C$ 887
Wed 26/116:15 a.m.BOS - YSJ
2 stops8h 18mAir Canada
Wed 3/124:15 p.m.YSJ - BOS
1 stop6h 12mAir Canada
Deal found 27/10C$ 902
Fri 12/126:15 a.m.BOS - YSJ
2 stops8h 18mAir Canada
Fri 19/1211:30 a.m.YSJ - BOS
1 stop12h 07mAir Canada
Deal found 28/10C$ 944
Thu 11/126:00 a.m.BOS - YSJ
2 stops16h 29mUnited Airlines
Thu 18/124:15 p.m.YSJ - BOS
1 stop4h 27mUnited Airlines
Deal found 27/10C$ 1,029
Tue 9/123:40 p.m.BOS - YSJ
3 stops23h 05mMultiple Airlines
Fri 12/1212:00 p.m.YSJ - BOS
3 stops32h 06mMultiple Airlines
Deal found 27/10C$ 1,080
Wed 26/113:40 p.m.BOS - YSJ
3 stops23h 05mMultiple Airlines
Wed 3/1212:00 p.m.YSJ - BOS
2 stops22h 35mMultiple Airlines
Deal found 27/10C$ 1,095

Cheap 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 28 October 2025.

Round-trip from

C$ 887

One-way from

C$ 397
Air Canada
  • Air Canada
  • 25/3-29/3
  • 2 total stops
  • 8h 27m total
  • Boston to Saint John
Search Deals
Air Canada
  • Air Canada
  • 28/11
  • 1 total stop
  • 4h 18m total
  • Boston to Saint John
Search Deals

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 629,999 searches. Data last updated 28 October 2025.
Use the filters below to find and compare flights from Boston to Saint John that are best for you.

Fly from

Boston

Fly to

St John

Route

Depart

Return

Price

BostonSaint John

BOS - YSJ

BOSYSJ

Boston Logan Intl

Tue 9/12

10:15 a.m.-3:33 p.m.

1 stop4h 18m

Saint John

Fri 12/12

4:15 p.m.-7:42 p.m.

1 stop4h 27m

C$ 887

BostonSaint John

BOS - YSJ

BOSYSJ

Boston Logan Intl

Wed 25/3

10:15 a.m.-3:35 p.m.

1 stop4h 20m

Saint John

Sun 29/3

11:45 a.m.-2:52 p.m.

1 stop4h 07m

C$ 887

BostonSaint John

BOS - YSJ

BOSYSJ

Boston Logan Intl

Wed 26/11

5:30 a.m.-3:33 p.m.

1 stop9h 03m

Saint John

Wed 3/12

4:15 p.m.-9:27 p.m.

1 stop6h 12m

C$ 933

BostonSaint John

BOS - YSJ

BOSYSJ

Boston Logan Intl

Fri 12/12

5:30 a.m.-3:33 p.m.

1 stop9h 03m

Saint John

Fri 19/12

11:30 a.m.-10:37 p.m.

1 stop12h 07m

C$ 973

BostonSaint John

BOS - YSJ

BOSYSJ

Boston Logan Intl

Thu 11/12

6:00 a.m.-11:29 p.m.

2 stops16h 29m

Saint John

Thu 18/12

4:15 p.m.-7:42 p.m.

1 stop4h 27m

C$ 1,029

BostonSaint John

BOS - YSJ

BOSYSJ

Boston Logan Intl

Fri 28/11

10:15 a.m.-3:33 p.m.

1 stop4h 18m

C$ 397

BostonSaint John

BOS - YSJ

BOSYSJ

Boston Logan Intl

Tue 27/1

10:15 a.m.-3:35 p.m.

1 stop4h 20m

C$ 397

BostonSaint John

BOS - YSJ

BOSYSJ

Boston Logan Intl

Tue 27/1

5:45 a.m.-3:45 p.m.

3 stops33h 00m

C$ 428

BostonSaint John

BOS - YSJ

BOSYSJ

Boston Logan Intl

Sun 16/11

12:59 p.m.-3:45 p.m.

3 stops25h 46m

C$ 550

BostonSaint John

BOS - YSJ

BOSYSJ

Boston Logan Intl

Fri 14/11

6:15 a.m.-3:33 p.m.

2 stops8h 18m

C$ 569

Flights are sorted by cheapest round-trip flights first.

Deals found on 27/10

Showing 1-10 of 13 results
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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.

  • How long is the flight from Boston to Saint John?

    Air Canada can get you from Boston to Saint John in just under 4h 18m. Your travel time can differ by up to . The distance between Boston and Saint John is about 526 km.

  • 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.

See more FAQs

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Alternative routes for Boston to St John

See prices for flight routes from nearby airports that may be better suited for you.
Boston to Moncton flights

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Can Cheapflights find flights from Boston to St John with no change fees?

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