BOS - YSJ

$223 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 10/30. 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

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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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

Sat, Oct 18 - Tue, Oct 21
Air Canada Logo
6:00 am - 10:49 amBOS-YSJ
3h 49m1 stop
Air Canada Logo
11:35 am - 2:30 pmYSJ-BOS
3h 55m1 stop
$602Air Canada
Find Deal
Wed, Oct 15 - Sun, Oct 19
Air Canada Logo
6:00 am - 10:49 amBOS-YSJ
3h 49m1 stop
Air Canada Logo
5:55 am - 9:55 amYSJ-BOS
5h 00m1 stop
$608Air Canada
Find Deal
Tue, Oct 28 - Wed, Oct 29
Air Canada Logo
5:30 am - 11:15 amBOS-YSJ
4h 45m1 stop
Air Canada Logo
11:55 am - 2:52 pmYSJ-BOS
3h 57m1 stop
$612Air Canada
Find Deal
Sat, Oct 18 - Tue, Oct 21
Air Canada Logo
6:00 am - 10:49 amBOS-YSJ
3h 49m1 stop
Air Canada Logo
11:35 am - 6:10 pmYSJ-BOS
7h 35m2 stops
$613Air Canada
Find Deal
Wed, Oct 15 - Sun, Oct 19
Air Canada Logo
10:40 am - 5:40 pmBOS-YSJ
6h 00m1 stop
Air Canada Logo
5:55 am - 2:30 pmYSJ-BOS
9h 35m2 stops
$618Air Canada
Find Deal
Fri, Oct 31 - Fri, Nov 7
Air Canada Logo
5:30 am - 11:15 amBOS-YSJ
4h 45m1 stop
Air Canada Logo
6:15 pm - 10:37 pmYSJ-BOS
5h 22m1 stop
$619Air Canada
Find Deal
Thu, Oct 30 - Thu, Nov 6
Multiple Airlines Logo
6:55 pm - 3:45 pmBOS-YSJ
19h 50m3 stops
Multiple Airlines Logo
12:00 pm - 9:35 amYSJ-BOS
22h 35m2 stops
$659Multiple Airlines
Find Deal
Thu, Oct 16 - Sun, Oct 19
United Airlines Logo
6:00 am - 10:49 amBOS-YSJ
3h 49m1 stop
United Airlines Logo
5:55 am - 11:29 amYSJ-BOS
6h 34m1 stop
$694United Airlines
Find Deal
Thu, Oct 30 - Thu, Nov 6
United Airlines Logo
5:30 am - 11:15 amBOS-YSJ
4h 45m1 stop
United Airlines Logo
11:55 am - 2:52 pmYSJ-BOS
3h 57m1 stop
$698United Airlines
Find Deal
Fri, Oct 31 - Fri, Nov 7
United Airlines Logo
5:30 am - 11:15 amBOS-YSJ
4h 45m1 stop
United Airlines Logo
6:15 pm - 10:37 pmYSJ-BOS
5h 22m1 stop
$705United Airlines
Find Deal

Everything you should know

Top airlines
Air Canada
Cheapest • from $602 (round-trip)
Air Canada
Best reviews • 7.1 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Cheapest round-trip
$602
Air Canada
Sat 10/18Tue 10/21
BOS - YSJ • 1 stop
Cheapest one-way
$223
Multiple Airlines
Thu 10/30
BOS - YSJ • 3 stops
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KAYAK searches 100s of sites at once to find you the best travel deals.
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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 ($602) and United Airlines ($694).

Find deals

Good to know

Cheapest flight$223
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 $223 for a one-way ticket and $602 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 10000 reviews
7.3Boarding
7.8Crew
7.1Comfort
6.3Food
6.8Entertainment
Airline reviews

For the price, it was a really good experience. There was no entertainment on board, so I couldn't really rate this, and I didn't order a meal. I appreciated that there was a free glass of wine.

10.0 ExcellentAnonymous, Sep 2025MCO - YUL
Read more Air Canada reviews

For the price, it was a really good experience. There was no entertainment on board, so I couldn't really rate this, and I didn't order a meal. I appreciated that there was a free glass of wine.

Short flight. Everything was fine except the flight was delayed twice for a total of an hour.

My flight from New York to Canada and Canada to Brisbane was canceled, so I had to take united airlines instead flight from New York to Dubai then layover in Dubai 8 hours then from Dubai to Brisbane it was extremely difficult for me , it was a nightmare flying with Canadian airlines unfortunately.

I found the boarding easy and my seat was very comfortable as I had a lot of leg room. I am not too happy that I no longer have lounge access even though I used to get it with my TD credit card.

Flight cancelled. Major disruption to our travel. Do not use Air Canada from KC. To few flights.

Real smooth and easy, Real good leg room in coach!

There labor disputes cancelled my flight less than 24 hours before my boarding time but there customer service/website was easy enough to navigate and they rebooked me for no upcharge.

Re luggage I carried a backpack only. I did not check any bags in. However there were other passengers with carry on luggage going in the plane. My question is why are others allowed to have a carry on luggage inside the plane? Shouldn’t they have dropped it off at the gate? I’m asking because I could have brought the same thing instead of a backpack only. Please clarify for future reference. Thank you.

Like the service. Very hard to communicate or contact when have problems

Very bad, flight was cancelled due to strike and staff was unable to rebook us

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)

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