$322+ Cheap flights from Saint John (YSJ) to Boston (BOS)
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 10/29. Fares are subject to change and may not be available on all flights or dates of travel.
YSJ — BOS
Oct 30 — Nov 61
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from St John to Boston 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 St John to Boston
Cheapest
Best
One-way
Cheapest flights from St John to BostonExplore 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 September 30, 2026.
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 September 30, 2026.
This Air Canada deal was found by Cheapflights users on 9/28. 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.
Tue 12/811:05 am -
1 stop4h 48m
Thu 12/105:30 am -
1 stop3h 55m
Deal found 9/28![Air Canada logo]()
$669
This Air Canada deal was found by Cheapflights users on 9/28. 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.
Thu 11/1211:05 am -
2 stops7h 53m
Thu 11/195:30 am -
1 stop3h 49m
Deal found 9/28![Air Canada logo]()
$697
This United Airlines deal was found by Cheapflights users on 9/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1011:05 am -
1 stop4h 48m
Tue 11/175:30 am -
1 stop3h 49m
Deal found 9/26![United Airlines logo]()
$744
Best flights from St John to BostonDiscover carefully curated flight deals from St John to Boston that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 30, 2026.
Discover carefully curated flight deals from St John to Boston that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 30, 2026.
This Air Canada deal was found by Cheapflights users on 9/28. 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.
Tue 12/811:05 am -
1 stop4h 48m
Thu 12/105:30 am -
1 stop3h 55m
Deal found 9/28![Air Canada logo]()
$669
This United Airlines deal was found by Cheapflights users on 9/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1011:05 am -
1 stop4h 48m
Tue 11/177:31 am -
2 stops8h 23m
Deal found 9/26![United Airlines logo]()
$749
This Air Canada deal was found by Cheapflights users on 9/28. 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.
Thu 11/125:20 am -
1 stop6h 02m
Thu 11/195:30 am -
1 stop3h 49m
Deal found 9/28![Air Canada logo]()
$688
This United Airlines deal was found by Cheapflights users on 9/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/1411:05 am -
1 stop4h 48m
Sat 11/215:30 am -
1 stop3h 49m
Deal found 9/30![United Airlines logo]()
$809
One-way flights from St John to BostonSearch for one-way flight options from St John to Boston. Find affordable one-way fares based on user searches. Data last updated September 30, 2026.
Search for one-way flight options from St John to Boston. Find affordable one-way fares based on user searches. Data last updated September 30, 2026.
This Air Canada deal was found by Cheapflights users on 9/28. 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.
Thu 10/2911:05 am -
1 stop4h 38m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/28![Air Canada logo]()
$322
This Air Canada deal was found by Cheapflights users on 9/27. 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 11/1111:05 am -
1 stop4h 48m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/27![Air Canada logo]()
$362
This Air Canada deal was found by Cheapflights users on 9/28. 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.
Thu 11/125:20 am -
1 stop6h 02m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/28![Air Canada logo]()
$367
This Air Canada deal was found by Cheapflights users on 9/26. 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 12/1111:05 am -
1 stop4h 48m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/26![Air Canada logo]()
$369
This United Airlines deal was found by Cheapflights users on 9/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/295:15 am -
3 stops30h 04m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/28![United Airlines logo]()
$700
This United Airlines deal was found by Cheapflights users on 9/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1211:05 am -
3 stops24h 14m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/28![United Airlines logo]()
$729
This United Airlines deal was found by Cheapflights users on 9/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1111:05 am -
3 stops24h 14m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/27![United Airlines logo]()
$973
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 September 30, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $669 (Air Canada) |
One-way from | $322 (Air Canada) |
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 7,457,451 searches. Data last updated September 30, 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
Cheapest round-trip
Quickest round-trip
Saint JohnBoston
YSJ Saint John - BOS Boston Logan Intl
YSJBOS
Saint John
Thu 10/29
11:05 am-2:43 pm
1 stop4h 38m
Boston Logan Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$322
Saint JohnBoston
YSJ Saint John - BOS Boston Logan Intl
YSJBOS
Saint John
Wed 11/11
11:05 am-2:53 pm
1 stop4h 48m
Boston Logan Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$362
Saint JohnBoston
YSJ Saint John - BOS Boston Logan Intl
YSJBOS
Saint John
Thu 11/12
5:20 am-10:22 am
1 stop6h 02m
Boston Logan Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$367
Saint JohnBoston
YSJ Saint John - BOS Boston Logan Intl
YSJBOS
Saint John
Fri 12/11
11:05 am-2:53 pm
1 stop4h 48m
Boston Logan Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$369
Saint JohnBoston
YSJ Saint John - BOS Boston Logan Intl
YSJBOS
Saint John
Tue 12/8
11:05 am-2:53 pm
1 stop4h 48m
Boston Logan Intl
Thu 12/10
5:30 am-10:25 am
1 stop3h 55m
$669
Saint JohnBoston
YSJ Saint John - BOS Boston Logan Intl
YSJBOS
Saint John
Thu 11/12
5:20 am-10:22 am
1 stop6h 02m
Boston Logan Intl
Thu 11/19
5:30 am-10:19 am
1 stop3h 49m
$688
Saint JohnBoston
YSJ Saint John - BOS Boston Logan Intl
YSJBOS
Saint John
Thu 10/29
5:15 am-10:19 am
3 stops30h 04m
Boston Logan Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$700
Saint JohnBoston
YSJ Saint John - BOS Boston Logan Intl
YSJBOS
Saint John
Thu 11/12
11:05 am-10:19 am
3 stops24h 14m
Boston Logan Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$729
Saint JohnBoston
YSJ Saint John - BOS Boston Logan Intl
YSJBOS
Saint John
Tue 11/10
11:05 am-2:53 pm
1 stop4h 48m
Boston Logan Intl
Tue 11/17
7:31 am-4:54 pm
2 stops8h 23m
$749
Saint JohnBoston
YSJ Saint John - BOS Boston Logan Intl
YSJBOS
Saint John
Sat 11/14
11:05 am-2:53 pm
1 stop4h 48m
Boston Logan Intl
Sat 11/21
5:30 am-10:19 am
1 stop3h 49m
$809
Showing 1-10 of 11 resultsSorted by cheapest first
Compare providers for flights from St John to Boston
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St John to Boston in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Saint John-Boston flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Saint John-Boston flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Saint John-Boston flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Saint John-Boston 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 Saint John-Boston 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 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.
YSJ-BOS
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 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.
Traveling to a place near Boston?
Book flights to Boston if you plan to visit one of these locationsWaltham
Randolph
Concord
Cambridge
Brockton
Dedham
Cranston
Revere
Warwick
Pawtucket
Peabody
Auburn
Londonderry
York Beach
Fitchburg
North Falmouth
Swansea
Chelsea
Braintree
Sandwich
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
Boston flight routes
Complete your trip
Flights by cabin class
Other flight options
Popular flights