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Cheap flights from Boston to Saint John from C$ 350

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 22/9. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — YSJ
3 Aug — 10 Aug1
1 adult

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 29 July 2025.

Round-trip from

C$ 576

One-way from

C$ 350
Air Canada
  • Air Canada
  • 10/9-17/9
  • 2 total stops
  • 10h 23m total
  • Boston to Saint John
Search Deals
22/9
  • 22/9
  • 2 total stops
  • 23h 15m total
  • Boston to Saint John
Search Deals

Find 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 29 July 2025.

Wed 10/96:00 a.m.BOS - YSJ
1 stop3h 49mAir Canada
Wed 17/95:55 a.m.YSJ - BOS
1 stop6h 34mAir Canada
Deal found 27/7C$ 576
Wed 10/96:00 a.m.BOS - YSJ
1 stop3h 49mMultiple Airlines
Wed 17/95:55 a.m.YSJ - BOS
2 stops11h 33mMultiple Airlines
Deal found 27/7C$ 675
Sat 13/96:00 a.m.BOS - YSJ
2 stops10h 46mUnited Airlines
Sun 14/95:55 a.m.YSJ - BOS
2 stops11h 23mUnited Airlines
Deal found 27/7C$ 897

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 29 July 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

Wed 10/9

6:00 a.m.-10:49 a.m.

1 stop3h 49m

Saint John

Wed 17/9

5:55 a.m.-11:29 a.m.

1 stop6h 34m

C$ 576

BostonSaint John

BOS - YSJ

BOSYSJ

Boston Logan Intl

Wed 10/9

6:00 a.m.-10:49 a.m.

1 stop3h 49m

Saint John

Wed 17/9

5:55 a.m.-4:28 p.m.

2 stops11h 33m

C$ 675

BostonSaint John

BOS - YSJ

BOSYSJ

Boston Logan Intl

Sat 13/9

6:00 a.m.-5:46 p.m.

2 stops10h 46m

Saint John

Sun 14/9

5:55 a.m.-4:18 p.m.

2 stops11h 23m

C$ 897

BostonSaint John

BOS - YSJ

BOSYSJ

Boston Logan Intl

Mon 22/9

3:30 p.m.-3:45 p.m.

2 stops23h 15m

C$ 350

BostonSaint John

BOS - YSJ

BOSYSJ

Boston Logan Intl

Mon 22/9

6:00 a.m.-10:49 a.m.

1 stop3h 49m

C$ 376

Flights are sorted by cheapest round-trip flights first.

Deals found on 28/7

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.

Reviews of airlines servicing St John

Get insights into the airlines that provide service to St John. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St John. Reviews last updated 29 July 2025.
See what other customers who have flown with United Airlines and Air Canada from Boston to Saint John have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,896 reviews
Check prices

Food

6.6

Overall

7.4

Boarding

7.7

Entertainment

7.1

Crew

8.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
8,896 reviews
United Airlines
7.4
Good
8,896 reviews
Check prices

Food

6.6

Overall

7.4

Boarding

7.7

Entertainment

7.1

Crew

8.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Air Canada
7.1
Good
9,826 reviews
United Airlines
7.4
Good
8,896 reviews
Check prices

Food

6.6

Overall

7.4

Boarding

7.7

Entertainment

7.1

Crew

8.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

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.

  • What are the cheapest airlines flying from Boston to Saint John round-trip?

    Our cheapest airline available from Boston to Saint John is Air Canada. Our recent data shows that you can find tickets from as low as C$ 576 on this airline. An additional option worth looking into is United Airlines, starting at C$ 897.

  • 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.

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

    Currently, May is the cheapest month in which you can book a flight from Boston to Saint John (average of C$ 213). Flying from Boston to Saint John in December is currently the most expensive (average of C$ 461). 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

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Alternative routes for Boston to St John

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Cheapflights makes it easy to find Boston to St John flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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

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

Users can book flights with no change fees policies with our dedicated filters. Book flights from Boston to St John flexibly with Cheapflights today.

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

Yes! Start tracking prices for Boston to St John flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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