Find flights
When to book

Cheap flights from Saint John to Boston from C$ 320

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 10/6. Fares are subject to change and may not be available on all flights or dates of travel.
YSJ — BOS
29 May — 5 Jun1
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 29 April 2026.

Mon 29/610:45 a.m.
YSJ
-
BOS
1 stop23h 20m
Multiple Airlines
Sun 2/86:35 p.m.
BOS
-
YSJ
1 stop14h 25m
Multiple Airlines
Deal found 26/4C$ 641
Fri 3/710:45 a.m.
YSJ
-
BOS
1 stop7h 50m
Multiple Airlines
Sun 2/86:35 p.m.
BOS
-
YSJ
1 stop14h 25m
Multiple Airlines
Deal found 26/4C$ 652
Mon 29/610:45 a.m.
YSJ
-
BOS
1 stop23h 20m
Multiple Airlines
Tue 4/86:35 p.m.
BOS
-
YSJ
1 stop14h 25m
Multiple Airlines
Deal found 26/4C$ 675
Mon 29/610:45 a.m.
YSJ
-
BOS
1 stop23h 20m
Multiple Airlines
Thu 30/76:35 p.m.
BOS
-
YSJ
1 stop14h 25m
Multiple Airlines
Deal found 26/4C$ 679
Fri 3/710:45 a.m.
YSJ
-
BOS
1 stop7h 50m
Multiple Airlines
Tue 4/86:35 p.m.
BOS
-
YSJ
1 stop14h 25m
Multiple Airlines
Deal found 26/4C$ 686
Fri 3/710:45 a.m.
YSJ
-
BOS
1 stop7h 50m
Multiple Airlines
Thu 30/76:35 p.m.
BOS
-
YSJ
1 stop14h 25m
Multiple Airlines
Deal found 26/4C$ 690
Fri 10/74:30 p.m.
YSJ
-
BOS
1 stop5h 57m
Air Canada
Tue 14/710:40 a.m.
BOS
-
YSJ
1 stop4h 10m
Air Canada
Deal found 26/4C$ 706
Sat 4/74:30 p.m.
YSJ
-
BOS
1 stop5h 57m
Air Canada
Sat 1/810:40 a.m.
BOS
-
YSJ
1 stop4h 10m
Air Canada
Deal found 26/4C$ 709
Tue 30/612:50 p.m.
YSJ
-
BOS
1 stop6h 32m
Air Canada
Sat 1/810:40 a.m.
BOS
-
YSJ
1 stop4h 10m
Air Canada
Deal found 26/4C$ 714

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 29 April 2026.

Round-trip from

C$ 641

One-way from

C$ 320
29/6-2/8
  • 29/6-2/8
  • 2 total stops
  • 37h 45m total
  • Saint John to Boston
Search Deals
10/6
  • 10/6
  • 1 total stop
  • 7h 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 29 April 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
Quickest round-trip

Saint JohnBoston

YSJ - BOS

YSJBOS

Saint John

Fri 10/7

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

1 stop5h 57m

Boston Logan Intl

Tue 14/7

10:40 a.m.-3:50 p.m.

1 stop4h 10m

C$ 706

Saint JohnBoston

YSJ - BOS

YSJBOS

Saint John

Tue 9/6

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

1 stop5h 57m

Boston Logan Intl

Tue 16/6

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

1 stop5h 52m

C$ 714

Saint JohnBoston

YSJ - BOS

YSJBOS

Saint John

Tue 9/6

12:00 p.m.-7:05 p.m.

2 stops32h 05m

Boston Logan Intl

Tue 16/6

6:35 p.m.-10:00 a.m.

1 stop14h 25m

C$ 717

Saint JohnBoston

YSJ - BOS

YSJBOS

Saint John

Sat 4/7

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

1 stop5h 57m

Boston Logan Intl

Wed 29/7

5:45 a.m.-11:50 p.m.

2 stops17h 05m

C$ 818

Saint JohnBoston

YSJ - BOS

YSJBOS

Saint John

Fri 10/7

4:30 p.m.-1:08 a.m.

2 stops9h 38m

Boston Logan Intl

Tue 14/7

6:00 a.m.-3:50 p.m.

2 stops8h 50m

C$ 820
Cheapest one-way

Saint JohnBoston

YSJ - BOS

YSJBOS

Saint John

Wed 10/6

10:45 a.m.-5:35 p.m.

1 stop7h 50m

C$ 320

Saint JohnBoston

YSJ - BOS

YSJBOS

Saint John

Tue 7/7

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

1 stop5h 57m

C$ 392

Saint JohnBoston

YSJ - BOS

YSJBOS

Saint John

Sat 6/6

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

1 stop5h 57m

C$ 392

Saint JohnBoston

YSJ - BOS

YSJBOS

Saint John

Fri 12/6

10:45 a.m.-5:35 p.m.

1 stop7h 50m

C$ 400
Quickest one-way

Saint JohnBoston

YSJ - BOS

YSJBOS

Saint John

Fri 12/6

5:35 a.m.-9:49 a.m.

1 stop5h 14m

C$ 404

Flights are sorted by cheapest round-trip flights first.

Deals found on 26/4

Sorted by cheapest first

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$ 673.

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.

  • 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.

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
Kennebunk
Watertown
Ogunquit
Warwick
Lawrence
Pawtucket
Nashua

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

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

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Boston from St John today with Cheapflights!

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

Cheapflights simply makes it quick and affordable to book flights from St John to Boston by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

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!

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.