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Cheap flights from Saint John to Boston from C$ 318

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 10/7. Fares are subject to change and may not be available on all flights or dates of travel.
YSJ — BOS
13 Jul — 20 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from St John to Boston

Enter your travel dates to find the best prices.

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 13 June 2026.

Wed 21/104:40 p.m.
YSJ
-
BOS
1 stop5h 46m
Air Canada
Thu 22/1010:40 a.m.
BOS
-
YSJ
1 stop4h 19m
Air Canada
Deal found 12/6C$ 708
Wed 8/74:40 p.m.
YSJ
-
BOS
1 stop5h 47m
Air Canada
Sun 12/710:40 a.m.
BOS
-
YSJ
1 stop4h 05m
Air Canada
Deal found 12/6C$ 738
Sat 25/74:40 p.m.
YSJ
-
BOS
1 stop5h 47m
Air Canada
Mon 31/810:40 a.m.
BOS
-
YSJ
1 stop4h 20m
Air Canada
Deal found 11/6C$ 745
Sun 12/75:00 a.m.
YSJ
-
BOS
1 stop5h 53m
Air Canada
Wed 15/710:40 a.m.
BOS
-
YSJ
1 stop4h 05m
Air Canada
Deal found 9/6C$ 747
Wed 21/104:40 p.m.
YSJ
-
BOS
2 stops17h 53m
United Airlines
Thu 22/1012:45 p.m.
BOS
-
YSJ
2 stops10h 06m
United Airlines
Deal found 12/6C$ 820

Find 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 13 June 2026.

Round-trip from

C$ 708

One-way from

C$ 318
Air Canada
  • Air Canada
  • 21/10-22/10
  • 2 total stops
  • 10h 05m total
  • Saint John to Boston
Search Deals
10/7
  • 10/7
  • 1 total stop
  • 8h 50m total
  • Saint John to Boston
Search Deals

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 629,999 searches. Data last updated 13 June 2026.
Use the filters below to find and compare flights from Saint John to Boston that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Saint JohnBoston

YSJ - BOS

YSJBOS

Saint John

Wed 21/10

4:40 p.m.-9:26 p.m.

1 stop5h 46m

Boston Logan Intl

Thu 22/10

6:00 a.m.-3:59 p.m.

2 stops8h 59m

C$ 719
Quickest round-trip

Saint JohnBoston

YSJ - BOS

YSJBOS

Saint John

Wed 8/7

4:40 p.m.-9:27 p.m.

1 stop5h 47m

Boston Logan Intl

Sun 12/7

10:40 a.m.-3:45 p.m.

1 stop4h 05m

C$ 738

Saint JohnBoston

YSJ - BOS

YSJBOS

Saint John

Sun 12/7

5:00 a.m.-11:52 a.m.

1 stop7h 52m

Boston Logan Intl

Tue 14/7

10:40 a.m.-3:45 p.m.

1 stop4h 05m

C$ 747

Saint JohnBoston

YSJ - BOS

YSJBOS

Saint John

Sun 12/7

5:00 a.m.-9:53 a.m.

1 stop5h 53m

Boston Logan Intl

Wed 15/7

10:40 a.m.-3:45 p.m.

1 stop4h 05m

C$ 747

Saint JohnBoston

YSJ - BOS

YSJBOS

Saint John

Wed 21/10

4:40 p.m.-9:33 a.m.

2 stops17h 53m

Boston Logan Intl

Thu 22/10

12:45 p.m.-11:51 p.m.

2 stops10h 06m

C$ 820

Saint JohnBoston

YSJ - BOS

YSJBOS

Saint John

Sat 25/7

4:40 p.m.-9:27 p.m.

1 stop5h 47m

Boston Logan Intl

Mon 31/8

6:00 a.m.-4:00 p.m.

2 stops9h 00m

C$ 842

Saint JohnBoston

YSJ - BOS

YSJBOS

Saint John

Tue 28/7

4:40 p.m.-9:27 p.m.

1 stop5h 47m

Boston Logan Intl

Tue 4/8

10:40 a.m.-4:00 p.m.

1 stop4h 20m

C$ 843
Cheapest one-way

Saint JohnBoston

YSJ - BOS

YSJBOS

Saint John

Fri 25/9

4:30 p.m.-9:26 p.m.

1 stop5h 56m

C$ 362

Saint JohnBoston

YSJ - BOS

YSJBOS

Saint John

Thu 27/8

4:30 p.m.-9:27 p.m.

1 stop5h 57m

C$ 362

Saint JohnBoston

YSJ - BOS

YSJBOS

Saint John

Fri 10/7

10:45 a.m.-8:55 p.m.

2 stops11h 10m

C$ 392

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/6

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

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’s the top layover airport for flights from Saint John to Boston?

Share of one-stop round-trip flights from Saint John to Boston chosen by Cheapflights users in the past 12 months, using the same layover each way.

Montreal (YUL) – chosen by Cheapflights users on 50% of one-stop itineraries from Saint John to Boston on Cheapflights.

What’s the cheapest layover airport for flights from Saint John to Boston?

Average round-trip fare for 1-stop flights from Saint John to Boston, chosen by Cheapflights users in the past 12 months, with the same layover each way.

Montreal (YUL) is the most affordable 1-stop option, with an average round-trip price of C$ 689.

What’s the fastest layover option from Saint John to Boston?

Shortest average travel time for 1-stop one-way flights from Saint John to Boston, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via Montreal (YUL) have the shortest average one-way travel time for 1-stop routes: 3h 57m.

Which airport typically offers the quickest layover for flights from Saint John to Boston?

Average layover duration for 1-stop one-way flights from Saint John to Boston, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Montreal (YUL) offer the fastest connection on this route, with an average layover time of 1h 31m.

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.

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

    Airlines like Air Canada fly from Saint John to Boston in about 5h 46m. The time it takes to get you to your destination can typically vary by up to . The distance from Saint John to Boston is about 526 km.

  • 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.

See more FAQs

Travelling to a place near Boston?

Book flights to Boston if you plan to visit one of these locations
Medford
Merrimack
Chelsea
Braintree
Milford
Seekonk
Hampton
Old Orchard Beach
Revere
Waltham
Watertown
Warwick
Ogunquit
Lawrence
Pawtucket
Nashua

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for St John to Boston

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

Fly with Cheapflights

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How does Cheapflights help users find flights from St John to Boston?

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Why should you use Cheapflights to find cheap flight tickets from St John to Boston?

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

Yes! Cheapflights helps users easily find flights from St John to Boston with no change fees.

Can Cheapflights notify me if prices for flights from St John to Boston become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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