BOS - YSJ

$561 Find Cheap Flights from Boston to Saint John

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boston to Saint John departing on 6/17. 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
$561
Multiple Airlines
Wed 6/17Wed 6/24
BOS - YSJ • 2 stops
Cheapest one-way
$681
Air Canada
Thu 5/21
BOS - YSJ • 1 stop
Top airlines
Air Canada
Cheapest • from $639 (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 $691 (round-trip)
Montreal (YUL)
Shortest trip • 4h 12m (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

Wed, Jun 17 - Wed, Jun 24
Multiple Airlines Logo
3:25 pm - 1:30 pm
BOS
-
YSJ
21h 05m
2 stops
Multiple Airlines Logo
10:45 am - 5:35 pm
YSJ
-
BOS
7h 50m
1 stop
$561Multiple Airlines
Thu, Jun 18 - Thu, Jun 25
Multiple Airlines Logo
10:05 am - 10:00 am
BOS
-
YSJ
22h 55m
1 stop
Multiple Airlines Logo
11:30 am - 5:35 pm
YSJ
-
BOS
31h 05m
2 stops
$622Multiple Airlines
Thu, May 28 - Fri, May 29
Air Canada Logo
10:35 am - 3:40 pm
BOS
-
YSJ
4h 05m
1 stop
Air Canada Logo
4:30 pm - 9:27 pm
YSJ
-
BOS
5h 57m
1 stop
$639Air Canada
Thu, May 28 - Fri, May 29
Air Canada Logo
5:10 am - 3:40 pm
BOS
-
YSJ
9h 30m
2 stops
Air Canada Logo
4:30 pm - 9:27 pm
YSJ
-
BOS
5h 57m
1 stop
$652Air Canada
Wed, Jun 17 - Wed, Jun 24
Air Canada Logo
10:35 am - 3:50 pm
BOS
-
YSJ
4h 15m
1 stop
Air Canada Logo
4:35 pm - 9:27 pm
YSJ
-
BOS
5h 52m
1 stop
$667Air Canada
Wed, Jun 17 - Wed, Jun 24
Multiple Airlines Logo
1:35 pm - 1:30 pm
BOS
-
YSJ
22h 55m
3 stops
Multiple Airlines Logo
10:45 am - 5:35 pm
YSJ
-
BOS
7h 50m
1 stop
$669Multiple Airlines
Thu, May 28 - Fri, May 29
Air Canada Logo
5:10 am - 3:40 pm
BOS
-
YSJ
9h 30m
2 stops
Air Canada Logo
4:30 pm - 9:49 am
YSJ
-
BOS
18h 19m
2 stops
$691Air Canada
Tue, Jun 16 - Sat, Jun 20
Air Canada Logo
10:35 am - 3:50 pm
BOS
-
YSJ
4h 15m
1 stop
Air Canada Logo
4:35 pm - 9:27 pm
YSJ
-
BOS
5h 52m
1 stop
$693Air Canada
Fri, Jul 10 - Sun, Jul 12
Air Canada Logo
10:40 am - 3:56 pm
BOS
-
YSJ
4h 16m
1 stop
Air Canada Logo
5:00 am - 11:52 am
YSJ
-
BOS
7h 52m
1 stop
$694Air Canada
Mon, Jul 27 - Fri, Jul 31
Air Canada Logo
10:40 am - 3:56 pm
BOS
-
YSJ
4h 16m
1 stop
Air Canada Logo
5:00 am - 11:52 am
YSJ
-
BOS
7h 52m
1 stop
$695Air 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 ($639) and United Airlines ($862).

Find deals

Good to know

Cheapest flight$561
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 $681 for a one-way ticket and $561 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 11000 reviews
7.1Comfort
6.3Food
7.8Crew
6.8Entertainment
7.3Boarding
Airline reviews

I was charge a baggage checking fee $68!! I volunteered to check my duffle bag which usually goes under my seat!

2.0 MediocreRobert, May 2026
SFO - YYZ
Read more Air Canada reviews

I was charge a baggage checking fee $68!! I volunteered to check my duffle bag which usually goes under my seat!

I did not like anything because the flight was cancelled yesterday and I did not get to arrive on time in Toronto as I was rebooked with another airline. This caused me to be really stressed out as I am an individual with back injury and to be forced to stay longer in an airport to accommodate a change of airline and the transfers associated with it Due to this I am probably not going to book through your website to eliminate this potentially chaos in the future

shittiest airline in the hemisphere. To improve - start thinking you're flying people, not cattle

Easy boarding, inflight refreshments came on time and comfortable seat

It was good that our flight left early. It was a nice smooth flight and landing.

All good……but luggage didn’t make it on the airplane. Had to wait 3 days. Was a bummer.

Small suitcase used for carryon the last time was refused by boarding crew this time. Appears to be at the discretion and mood of the person on the day. Flight was only half booked, there would have been no problem with space.

It was a problem because there was a delay where we sat before taking off from newark,then when landed in Toronto we sat on tarmac and they wouldn't let us out for a long period of time. When we finally were released to the airport in Toronto the attendant scanned our boarding pass that we were here for our connection to Brazil. We ran all the way to the gate and they said at the gate the door is shut so we can not let you on the plane. We explained that we were checked in by the attendant when we arrived at Toronto airport to go to Brazil and they should not have shut the door. We were ignored at the gate

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)

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)