BOS - YSJ

$284 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 9/5. 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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41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$624
Multiple Airlines
Mon 5/25Mon 6/1
BOS - YSJ • 2 stops
Cheapest one-way
$284
Air Canada
Sat 9/5
BOS - YSJ • 1 stop
Nonstop flights
Not available
There are currently no direct flights between Boston and Saint John. You'll need at least 1 connection.
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We hope you love your trip to Saint John!
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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

Mon, May 25 - Mon, Jun 1
Multiple Airlines Logo
8:55 pm - 10:00 am
BOS
-
YSJ
36h 05m
2 stops
Multiple Airlines Logo
10:45 am - 5:35 pm
YSJ
-
BOS
7h 50m
1 stop
$624Multiple Airlines
Thu, Jun 18 - Sun, Jun 21
Air Canada Logo
5:00 pm - 11:50 pm
BOS
-
YSJ
5h 50m
1 stop
Air Canada Logo
5:40 am - 11:52 am
YSJ
-
BOS
7h 12m
1 stop
$638Air Canada
Thu, Jun 18 - Sun, Jun 21
Air Canada Logo
5:10 am - 3:50 pm
BOS
-
YSJ
9h 40m
2 stops
Air Canada Logo
5:40 am - 9:48 am
YSJ
-
BOS
5h 08m
1 stop
$646Air Canada
Sat, Jun 27 - Tue, Jul 7
Air Canada Logo
5:10 am - 11:55 am
BOS
-
YSJ
5h 45m
1 stop
Air Canada Logo
4:30 pm - 9:27 pm
YSJ
-
BOS
5h 57m
1 stop
$654Air Canada
Thu, Jun 18 - Sun, Jun 21
Air Canada Logo
5:10 am - 11:55 am
BOS
-
YSJ
5h 45m
1 stop
Air Canada Logo
5:40 am - 11:52 am
YSJ
-
BOS
7h 12m
1 stop
$659Air Canada
Sat, Jun 27 - Tue, Jul 7
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
$663Air Canada
Thu, Jun 18 - Sun, Jun 21
Air Canada Logo
5:10 am - 3:50 pm
BOS
-
YSJ
9h 40m
2 stops
Air Canada Logo
12:50 pm - 6:22 pm
YSJ
-
BOS
6h 32m
1 stop
$668Air Canada
Sat, May 23 - Sat, May 30
Air Canada Logo
5:10 am - 3:40 pm
BOS
-
YSJ
9h 30m
2 stops
Air Canada Logo
5:00 am - 2:47 pm
YSJ
-
BOS
10h 47m
2 stops
$683Air Canada
Fri, May 22 - Fri, May 29
Air Canada Logo
5:10 am - 11:57 am
BOS
-
YSJ
5h 47m
1 stop
Air Canada Logo
5:00 am - 2:47 pm
YSJ
-
BOS
10h 47m
2 stops
$695Air Canada
Thu, Jun 18 - Sun, Jun 21
Air Canada Logo
10:40 am - 3:50 pm
BOS
-
YSJ
4h 10m
1 stop
Air Canada Logo
4:30 pm - 9:27 pm
YSJ
-
BOS
5h 57m
1 stop
$704Air Canada
Booking Insights

Good to know

Cheapest flight$284
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 $284 for a one-way ticket and $624 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 10916 reviews
7.1Comfort
6.3Food
7.8Crew
7.3Boarding
6.8Entertainment
Airline reviews

Flight home was delayed multiple times, did not get home until 2am

2.0 MediocreAnonymous, Apr 2026
IAD - YYZ
Read more Air Canada reviews

Flight home was delayed multiple times, did not get home until 2am

the check-in lady at ORD was extremely rude and unprofessional. very disappointed as it was supposed to be a celebration for my wife's birthday and it really put a damper on things. if i wanted to be treated like trash, i would have flown Economy! (as opposed to business class)

My original flight was cancelled and then rebooked four hours later on a recovery flight, but I was checked in as stanby and had no seats so as a family of four we were concerned about not being seated altogether. Our flight then got delayed by another 1.5 hours and when seats were assigned at the gate, three of the four of us were together and we could get my wife closer, they offered no assistance.

I bought a ticket from Kayak. When I got to the airport, the was no ticket. I had to pay 5X to get to my destination. No response received from Kayak. I will NEVER use them again.

My wallet was stolen while I was sleeping on the plane.

Good boarding but extremely cold temperature in both flights (60 F!).

The whole plane smelled and felt old. The seats were very uncomfortable. Multiple delays. Extra fees.

Very rude gate attendants in San Francisco who didn’t let me bring my little carry on (smaller than usual size) and after boarding I realized that there still were a lot of overhead compartment space (like a full section available in some spots). That made me lose 30 minutes at my destination at 1am and it could have broken something fragile that I had in it

The most uncomfortable flight I’ve ever been on. I’m only 5,4” and barely had enough room to exist, couldn’t even fully relax my shoulders. Not sure why they bother with snacks. Half a coke and a single cookie?? Wow. Purchasable food looked gross too. Remember when airlines used to treat you like a human being?

Departed Palm Springs over an hour late because there’s only one gate, and it has always delayed by the arriving and departing flight to Toronto and the arriving flight from Vancouver.

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

Information on your arrival and departure airports

Boston (BOS)
Saint John (YSJ)