BOS - YSJ

$247 Find Cheap Flights from Boston to Saint John

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boston to Saint John departing on 6/25. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Saint John

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to Saint John, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to Saint John, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$549
Air Canada
Sun 3/29Thu 4/2
BOS - YSJ • 1 stop
Cheapest one-way
$247
Air Canada
Thu 6/25
BOS - YSJ • 1 stop
Top airlines
Air Canada
Cheapest • from $549 (round-trip)
Air Canada
Best reviews • 7.1 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Boston and Saint John. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Toronto (YYZ)
Cheapest • Avg $537 (round-trip)
Montreal (YUL)
Shortest trip • 4h 07m (one-way)
Insights
Insights
Insights
Insights
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Saint John!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Boston to Saint John (BOS-YSJ)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Boston to Saint John that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Boston to Saint John

Sun, Mar 29 - Thu, Apr 2
Air Canada Logo
5:30 am - 11:15 am
BOS
-
YSJ
4h 45m
1 stop
Air Canada Logo
11:55 am - 2:52 pm
YSJ
-
BOS
3h 57m
1 stop
$549Air Canada
Sat, Jun 13 - Wed, Jun 17
Air Canada Logo
10:35 am - 3:50 pm
BOS
-
YSJ
4h 15m
1 stop
Air Canada Logo
4:30 pm - 9:27 pm
YSJ
-
BOS
5h 57m
1 stop
$571Air Canada
Sun, Mar 29 - Thu, Apr 2
Air Canada Logo
5:30 am - 11:15 am
BOS
-
YSJ
4h 45m
1 stop
Air Canada Logo
5:35 am - 12:11 pm
YSJ
-
BOS
7h 36m
1 stop
$576Air Canada
Sat, Jun 13 - Tue, Jun 16
Air Canada Logo
5:10 am - 3:50 pm
BOS
-
YSJ
9h 40m
2 stops
Air Canada Logo
4:30 pm - 9:27 pm
YSJ
-
BOS
5h 57m
1 stop
$585Air Canada
Sun, Mar 29 - Thu, Apr 2
Air Canada Logo
7:55 pm - 11:10 am
BOS
-
YSJ
14h 15m
2 stops
Air Canada Logo
11:55 am - 2:52 pm
YSJ
-
BOS
3h 57m
1 stop
$588Air Canada
Sun, Mar 29 - Thu, Apr 2
Air Canada Logo
6:15 am - 11:10 am
BOS
-
YSJ
27h 55m
2 stops
Air Canada Logo
5:35 am - 12:11 pm
YSJ
-
BOS
7h 36m
1 stop
$620Air Canada
Sat, Jun 6 - Wed, Jun 10
Air Canada Logo
5:10 am - 3:50 pm
BOS
-
YSJ
9h 40m
2 stops
Air Canada Logo
4:30 pm - 9:54 am
YSJ
-
BOS
18h 24m
2 stops
$623Air Canada
Fri, Apr 17 - Fri, Apr 24
Air Canada Logo
5:30 am - 11:15 am
BOS
-
YSJ
4h 45m
1 stop
Air Canada Logo
5:35 am - 9:59 am
YSJ
-
BOS
5h 24m
1 stop
$634Air Canada
Thu, Apr 16 - Thu, Apr 23
Air Canada Logo
5:30 am - 11:15 am
BOS
-
YSJ
4h 45m
1 stop
Air Canada Logo
11:55 am - 10:39 pm
YSJ
-
BOS
11h 44m
2 stops
$643Air Canada
Sun, Mar 29 - Thu, Apr 2
Air Canada Logo
7:55 pm - 11:10 am
BOS
-
YSJ
14h 15m
2 stops
Air Canada Logo
11:55 am - 10:39 pm
YSJ
-
BOS
11h 44m
2 stops
$659Air Canada
Booking Insights

KAYAK's insights & trends for Boston to Saint John flights

Get data-powered insights and trends into flights from Boston to Saint John to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Boston to Saint John?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Boston to Saint John were found on Air Canada ($549) and United Airlines ($693).

Good to know

Cheapest flight$247
Flight from Boston to Saint John

When to book flights from Boston to Saint John

Are your dates flexible? Find out the best times to travel from Boston to Saint John based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Boston to Saint John

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

    In the last 3 days, the lowest price for a flight from Boston to Saint John was $247 for a one-way ticket and $549 for a round-trip.

  • Do I need a passport to fly between Boston and Saint John?

    Yes

  • Which aircraft models fly most regularly from Boston to Saint John?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Boston to Saint John?

    Star Alliance is the only airline alliance operating flights between Boston and Saint John.

  • How does KAYAK find such low prices on flights from Boston to Saint John?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Boston to Saint John.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Boston to Saint John?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Saint John from Boston is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Boston to Saint John?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Saint John with an airline and back to Boston with another airline. Booking your flights between Boston and YSJ can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Boston to Saint John?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Saint John from Boston up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Boston to Saint John

 
See real verified KAYAK customer reviews for airlines flying from Boston to Saint John. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Boston to Saint John? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.1
Air CanadaOverall score based on 10785 reviews
6.3Food
7.1Comfort
7.8Crew
7.3Boarding
6.8Entertainment
Airline reviews

Flight was canceled due to mechanical issues. After a considerable wait in the queue, Air Canada customer service was very helpful to get us on another flight. I am disappointed to report our rescheduled flight is for three days from now. Three days of extra expenses and inconvenience is unacceptable.

2.0 MediocreAnonymous, Feb 2026
BNA - YYZ
Read more Air Canada reviews

Flight was canceled due to mechanical issues. After a considerable wait in the queue, Air Canada customer service was very helpful to get us on another flight. I am disappointed to report our rescheduled flight is for three days from now. Three days of extra expenses and inconvenience is unacceptable.

Extremely disappointing. My original Denver–Vancouver–Bangkok itinerary was cancelled due to a crewing issue. I was not proactively supported and had to drive back home after already reaching the airport. Communication was poor throughout, and attempts to contact customer service resulted in being on hold for nearly three hours without reaching anyone. Instead of being rebooked on the same direct routing the following day, I was rerouted onto a much longer itinerary via multiple cities and airlines, which resulted in arriving approximately 30 hours later than scheduled. At Denver airport, there was no visible Air Canada representative available to properly assist. Ground staff offered no real support beyond directing passengers to a phone number. There was no clear communication, no ownership, and no meaningful customer care during a major disruption. The final journey involved three flights instead of the original two, significantly increasing travel time and stress. Overall, the handling of the cancellation and lack of customer support was unacceptable. What could have been better? Clear communication during the cancellation Accessible customer service (phone support that actually answers) Proper in-person assistance at the airport Rebooking onto a comparable routing rather than a significantly longer one

Great setup on both flights except the last flight we got condensed dripping all over me in the last 20 mins of the flight

The last 3 hours it was freezing cold in row 56. Multiple people had their winter coats on and were utilizing the blankets provided by the airline. I also did not have easy access to figure out how to book my food allergy and advance for my meals. Most of everything I received was something I couldn't eat. This needs to be made more accessible. Also, I'm 5'10 which is the average height of the American male. I flew from Philadelphia to Toronto and then to Tokyo and the seats were absolutely unbearable. For that long of a flight it is impossible to get comfortable when doing anything. Flights need to have more space and stop prioritizing costs over people.

Was delayed at every point/ connection. Luggages missing for 5days. Had no medications for diabetes and high B/p. when bags where finally delivered on the 30th, the insulin and ozempic were no longer patent, as the ice pack had since dissolved and the authenticity of the med is now questionable, since they must be refrigerated. Please have them refund my bag fees. I should sue them for all the inconveniences caused to me.

The plane was delayed substantially due to a mechanical problem, that being said, the airline was very fair with providing a meal coupon for us. I would rather arrive late on a mechanically sound plane than the alternative. The food served in the plane was just awful, however and I recommend a new catering company.

I waiting for 2 hrs to retrieve my luggage. Didn't get home till 3am.

The flight left late and I didn’t get a glass of bubbly upon boarding (which I’m used to when booking business class on other flights), but otherwise it was a pleasant flight with lovely, helpful crew members and I enjoyed my meal.

Flight cancellations, delays, mass confusion and disorganization! That’s Air Canada for you, nothing new. I would have chosen a different airline if it were an option, and Air Canada continues to prove they don’t care about their customers.

everything was fine. but paying for 1 piece of check-in luggage and denying passengers to board with carry-on luggage which by air line's standards does not fit is not acceptable. when one travels for a longer time one needs to have some essentials

Everything you need to know for your flight from Boston to Saint John

Information on your arrival and departure airports