$573+ 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 10/23. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — YSJ
Oct 11 — Oct 181
Round-trip
1 adult, Economy
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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
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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
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Last-minute
Cheapest flights from Boston to St JohnExplore 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 September 11, 2026.
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 September 11, 2026.
This Air Canada deal was found by Cheapflights users on 9/8. 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 10/234:55 pm -
1 stop5h 56m
Fri 10/306:00 pm -
1 stop5h 37m
Deal found 9/8![Air Canada logo]()
$573
This Air Canada deal was found by Cheapflights users on 9/9. 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.
Mon 11/910:25 am -
2 stops11h 59m
Fri 11/135:20 am -
1 stop6h 02m
Deal found 9/9![Air Canada logo]()
$578
This Kiwi.com deal was found by Cheapflights users on 9/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/69:55 am -
2 stops12h 20m
Mon 10/1210:45 am -
1 stop23h 20m
Deal found 9/6![Multiple Airlines logo]()
$649
This Air Canada deal was found by Cheapflights users on 9/7. 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.
Mon 10/123:35 pm -
2 stops7h 16m
Sat 10/245:00 am -
1 stop5h 55m
Deal found 9/7![Air Canada logo]()
$667
This Air Canada deal was found by Cheapflights users on 9/9. 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 10/154:55 pm -
1 stop5h 56m
Sat 10/1712:50 pm -
1 stop6h 24m
Deal found 9/9![Air Canada logo]()
$679
Best flights from Boston to St JohnDiscover carefully curated flight deals from Boston to St John that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 11, 2026.
Discover carefully curated flight deals from Boston to St John that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 11, 2026.
This Air Canada deal was found by Cheapflights users on 9/8. 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 10/234:55 pm -
1 stop5h 56m
Fri 10/306:00 pm -
1 stop5h 37m
Deal found 9/8![Air Canada logo]()
$573
This Air Canada deal was found by Cheapflights users on 9/9. 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.
Mon 11/911:15 am -
1 stop11h 09m
Fri 11/135:20 am -
1 stop6h 02m
Deal found 9/9![Air Canada logo]()
$594
This Air Canada deal was found by Cheapflights users on 9/7. 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.
Mon 10/126:00 am -
2 stops8h 59m
Sat 10/245:00 am -
2 stops10h 41m
Deal found 9/7![Air Canada logo]()
$670
This Air Canada deal was found by Cheapflights users on 9/9. 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 10/154:55 pm -
1 stop5h 56m
Sat 10/1712:50 pm -
1 stop6h 24m
Deal found 9/9![Air Canada logo]()
$679
This Air Canada deal was found by Cheapflights users on 9/6. 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 10/64:55 pm -
1 stop5h 56m
Mon 10/125:00 am -
1 stop5h 55m
Deal found 9/6![Air Canada logo]()
$679
This Air Canada deal was found by Cheapflights users on 9/6. 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 10/103:35 pm -
2 stops7h 16m
Sun 10/1112:50 pm -
2 stops9h 36m
Deal found 9/6![Air Canada logo]()
$696
Last-minute flights from Boston to St JohnDiscover last-minute flight deals from Boston to St John. Data last updated September 11, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to St John. Data last updated September 11, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 9/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/69:55 am -
2 stops12h 20m
Mon 10/1210:45 am -
1 stop23h 20m
Deal found 9/6![Multiple Airlines logo]()
$649
This Air Canada deal was found by Cheapflights users on 9/7. 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.
Mon 10/123:35 pm -
2 stops7h 16m
Sat 10/245:00 am -
1 stop5h 55m
Deal found 9/7![Air Canada logo]()
$667
This Air Canada deal was found by Cheapflights users on 9/9. 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 10/154:55 pm -
1 stop5h 56m
Sat 10/1712:50 pm -
1 stop6h 24m
Deal found 9/9![Air Canada logo]()
$679
This Air Canada deal was found by Cheapflights users on 9/8. 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 10/234:55 pm -
1 stop5h 56m
Fri 10/306:00 pm -
1 stop5h 37m
Deal found 9/8![Air Canada logo]()
$573
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 September 11, 2026.
Round-trip from | $573 (Air Canada) |
|---|
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 7,457,451 searches. Data last updated September 11, 2026.
Use the filters below to find and compare flights from Boston to Saint John that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
BostonSaint John
BOS Boston Logan Intl - YSJ Saint John
BOSYSJ
Boston Logan Intl
Fri 10/23
4:55 pm-11:51 pm
1 stop5h 56m
Saint John
Fri 10/30
6:00 pm-10:37 pm
1 stop5h 37m
$573
BostonSaint John
BOS Boston Logan Intl - YSJ Saint John
BOSYSJ
Boston Logan Intl
Mon 11/9
11:15 am-11:24 pm
1 stop11h 09m
Saint John
Fri 11/13
5:20 am-10:22 am
1 stop6h 02m
$594
BostonSaint John
BOS Boston Logan Intl - YSJ Saint John
BOSYSJ
Boston Logan Intl
Mon 10/12
6:00 am-3:59 pm
2 stops8h 59m
Saint John
Sat 10/24
5:00 am-2:41 pm
2 stops10h 41m
$670
BostonSaint John
BOS Boston Logan Intl - YSJ Saint John
BOSYSJ
Boston Logan Intl
Thu 10/15
4:55 pm-11:51 pm
1 stop5h 56m
Saint John
Sat 10/17
12:50 pm-6:14 pm
1 stop6h 24m
$679
BostonSaint John
BOS Boston Logan Intl - YSJ Saint John
BOSYSJ
Boston Logan Intl
Tue 10/6
4:55 pm-11:51 pm
1 stop5h 56m
Saint John
Mon 10/12
5:00 am-9:55 am
1 stop5h 55m
$679
BostonSaint John
BOS Boston Logan Intl - YSJ Saint John
BOSYSJ
Boston Logan Intl
Sat 10/10
3:35 pm-11:51 pm
2 stops7h 16m
Saint John
Sun 10/11
12:50 pm-9:26 pm
2 stops9h 36m
$696
Sorted by cheapest first
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.
BOS-YSJ
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
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