HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
St John

$684+ Cheap flights from Boston (BOS) to Saint John (YSJ)

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 3/29. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — YSJ
Feb 26 — Mar 51
Thu 2/26
Thu 3/5
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Boston to St John with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap 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 January 27, 2026.

This Air Canada deal was found by Cheapflights users on 1/25. 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.
Sun 3/295:30 am
BOS
-
YSJ
1 stop4h 50m
Air Canada
Thu 4/211:55 am
YSJ
-
BOS
1 stop3h 57m
Air Canada
Deal found 1/25$684
This Air Canada deal was found by Cheapflights users on 1/26. 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 5/225:10 am
BOS
-
YSJ
1 stop5h 17m
Air Canada
Wed 5/274:30 pm
YSJ
-
BOS
1 stop5h 57m
Air Canada
Deal found 1/26$689
This Air Canada deal was found by Cheapflights users on 1/24. 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 3/116:15 am
BOS
-
YSJ
2 stops8h 20m
Air Canada
Wed 3/184:15 pm
YSJ
-
BOS
2 stops7h 22m
Air Canada
Deal found 1/24$741
This Air Canada deal was found by Cheapflights users on 1/26. 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.
Sat 5/235:10 am
BOS
-
YSJ
2 stops9h 30m
Air Canada
Wed 5/2712:20 pm
YSJ
-
BOS
2 stops10h 07m
Air Canada
Deal found 1/26$793
This Mytrip deal was found by Cheapflights users on 1/24. 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.
Wed 3/116:10 pm
BOS
-
YSJ
3 stops44h 35m
Multiple Airlines
Wed 3/1812:00 pm
YSJ
-
BOS
3 stops36h 59m
Multiple Airlines
Deal found 1/24$932

Find 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 January 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$684
(Air Canada)
Provider with most accurate pricing for Boston Logan Intl-Saint John flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boston Logan Intl-Saint John flights.
Search Deals
From Boston Logan Intl 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 2,558,603 searches. Data last updated January 27, 2026.
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 3/11

10:15 am-3:35 pm

1 stop4h 20m

Saint John

Wed 3/18

4:15 pm-7:12 pm

1 stop3h 57m

$684

BostonSaint John

BOS - YSJ

BOSYSJ

Boston Logan Intl

Sat 5/23

10:35 am-3:40 pm

1 stop4h 05m

Saint John

Wed 5/27

4:30 pm-9:27 pm

1 stop5h 57m

$684

BostonSaint John

BOS - YSJ

BOSYSJ

Boston Logan Intl

Sun 3/29

5:30 am-11:20 am

1 stop4h 50m

Saint John

Thu 4/2

11:55 am-2:52 pm

1 stop3h 57m

$684

BostonSaint John

BOS - YSJ

BOSYSJ

Boston Logan Intl

Fri 5/22

5:10 am-11:27 am

1 stop5h 17m

Saint John

Wed 5/27

4:30 pm-9:27 pm

1 stop5h 57m

$689

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/24

  • Most accurate provider: When it comes to deals on Boston-Saint John flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Boston-Saint John flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Boston-Saint John flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Boston-Saint John flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Boston-Saint John flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 January 27, 2026.
Get a feel of what it's like to fly with Air Canada from Boston to Saint John by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Air Canada
7.1
Good
10,660 reviews

Boarding

7.3

Comfort

7.1

Overall

7.1

Food

6.3

Crew

7.8

Entertainment

6.8

Reviews

1 / 20
2.0
Mediocre

Shawna,Sep 2025

DCA - YYZ

Business class cabin was *freezing*. Landing was so hard it injured my back - no apology or explanation given
Air Canada
7.1
Good
10,660 reviews
Air Canada
7.1
Good
10,660 reviews

Boarding

7.3

Comfort

7.1

Overall

7.1

Food

6.3

Crew

7.8

Entertainment

6.8

Reviews

1 / 20
2.0
Mediocre

Shawna,Sep 2025

DCA - YYZ

Business class cabin was *freezing*. Landing was so hard it injured my back - no apology or explanation given

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?

    Airlines like Air Canada fly from Boston to Saint John in about 4h 20m. The time it takes to get you to your destination can typically vary by up to . Boston and Saint John are separated by a distance of 327 mi.

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

    According to our current data, Air Canada ($235), offers the cheapest pricing from Boston to Saint John.

  • 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

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 Boston to St John

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

Top airline flying from Boston to St John

Discover the top airline that operate flights from Boston to St John. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$235Average$574FlexibilityNo cancel feeOn-time67%

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.