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Cheap flights from Boston to Saint John from $278

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Boston to Saint John departing on 4/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Find the cheapest flights from Boston to Saint John

Cheap round-trip flights

Enter your travel dates to find the best prices.
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
$620Air Canada
Sat, Jun 6 - Wed, Jun 10
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
$625Air Canada
Tue, Apr 21 - Tue, Apr 28
Air Canada Logo
5:30 am - 11:10 am
BOS
-
YSJ
4h 40m
1 stop
Air Canada Logo
11:55 am - 2:52 pm
YSJ
-
BOS
3h 57m
1 stop
$631Air Canada
Thu, Apr 23 - Thu, Apr 30
Air Canada Logo
5:30 am - 11:10 am
BOS
-
YSJ
4h 40m
1 stop
Air Canada Logo
4:30 pm - 9:27 pm
YSJ
-
BOS
5h 57m
1 stop
$632Air Canada
Sat, Apr 25 - Sat, May 2
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
$634Air Canada
Sat, Jun 6 - Wed, Jun 10
Air Canada Logo
5:00 pm - 11:52 pm
BOS
-
YSJ
5h 52m
1 stop
Air Canada Logo
4:30 pm - 9:27 pm
YSJ
-
BOS
5h 57m
1 stop
$637Air Canada
Fri, May 15 - Mon, May 18
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
$642Air Canada
Fri, Aug 7 - Sat, Aug 15
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
$645Air Canada
Sat, Jun 6 - Wed, Jun 10
Air Canada Logo
6:00 am - 3:50 pm
BOS
-
YSJ
8h 50m
2 stops
Air Canada Logo
4:30 pm - 9:27 pm
YSJ
-
BOS
5h 57m
1 stop
$656Air Canada
Fri, Aug 7 - Sat, Aug 15
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
$664Air Canada
Tue, Apr 21 - Tue, Apr 28

Air Canada flights from Boston to Saint John

Our best Air Canada deals on Boston to Saint John flight tickets
Air Canada
Jun 6
BOS10:35 amBoston Logan Intl
4h 15m
1 stop
YSJ3:50 pmSaint John
Jun 10
YSJ4:30 pmSaint John
5h 57m
1 stop
BOS9:27 pmBoston Logan Intl
$620
Air Canada
Apr 23
BOS5:30 amBoston Logan Intl
4h 40m
1 stop
YSJ11:10 amSaint John
Apr 30
YSJ11:55 amSaint John
3h 57m
1 stop
BOS2:52 pmBoston Logan Intl
$631
Air Canada
Apr 25
BOS5:30 amBoston Logan Intl
4h 40m
1 stop
YSJ11:10 amSaint John
May 2
YSJ4:30 pmSaint John
5h 57m
1 stop
BOS9:27 pmBoston Logan Intl
$632

United Airlines flights from Boston to Saint John

Our best United Airlines deals on Boston to Saint John flight tickets
United Airlines
Apr 21
BOS5:30 amBoston Logan Intl
4h 45m
1 stop
YSJ11:15 amSaint John
Apr 28
YSJ5:35 amSaint John
7h 36m
1 stop
BOS12:11 pmBoston Logan Intl
$722
United Airlines
Jun 6
BOS5:45 amBoston Logan Intl
9h 05m
2 stops
YSJ3:50 pmSaint John
Jun 10
YSJ4:30 pmSaint John
9h 29m
2 stops
BOS12:59 amBoston Logan Intl
$742
United Airlines
Jun 6
BOS6:00 amBoston Logan Intl
8h 50m
2 stops
YSJ3:50 pmSaint John
Jun 10
YSJ4:30 pmSaint John
8h 29m
2 stops
BOS11:59 pmBoston Logan Intl
$753

momondo Fare Finder

 
Customize your flight search to find flights from Boston to Saint 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, momondo users made 832,500 searches. Data last updated March 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

Price

Cheapest round-trip

BostonSaint John

BOS - YSJ

BOSYSJ

Boston Logan Intl

Sat 6/6

10:35 am-3:50 pm

1 stop4h 15m

Saint John

Wed 6/10

4:30 pm-9:27 pm

1 stop5h 57m

$620

BostonSaint John

BOS - YSJ

BOSYSJ

Boston Logan Intl

Tue 4/21

5:30 am-11:15 am

1 stop4h 45m

Saint John

Tue 4/28

5:35 am-12:11 pm

1 stop7h 36m

$625
Quickest round-trip

BostonSaint John

BOS - YSJ

BOSYSJ

Boston Logan Intl

Thu 4/23

5:30 am-11:10 am

1 stop4h 40m

Saint John

Thu 4/30

11:55 am-2:52 pm

1 stop3h 57m

$631

BostonSaint John

BOS - YSJ

BOSYSJ

Boston Logan Intl

Sat 4/25

5:30 am-11:10 am

1 stop4h 40m

Saint John

Sat 5/2

4:30 pm-9:27 pm

1 stop5h 57m

$632

BostonSaint John

BOS - YSJ

BOSYSJ

Boston Logan Intl

Sat 6/6

5:10 am-3:50 pm

2 stops9h 40m

Saint John

Wed 6/10

4:30 pm-9:27 pm

1 stop5h 57m

$634

BostonSaint John

BOS - YSJ

BOSYSJ

Boston Logan Intl

Fri 5/15

5:00 pm-11:52 pm

1 stop5h 52m

Saint John

Mon 5/18

4:30 pm-9:27 pm

1 stop5h 57m

$637

BostonSaint John

BOS - YSJ

BOSYSJ

Boston Logan Intl

Fri 8/7

10:40 am-3:50 pm

1 stop4h 10m

Saint John

Sat 8/15

4:30 pm-9:27 pm

1 stop5h 57m

$642

BostonSaint John

BOS - YSJ

BOSYSJ

Boston Logan Intl

Sat 6/6

5:10 am-3:50 pm

2 stops9h 40m

Saint John

Wed 6/10

4:30 pm-9:27 pm

1 stop5h 57m

$645

BostonSaint John

BOS - YSJ

BOSYSJ

Boston Logan Intl

Fri 8/7

6:00 am-3:50 pm

2 stops8h 50m

Saint John

Sat 8/15

4:30 pm-9:27 pm

1 stop5h 57m

$656

BostonSaint John

BOS - YSJ

BOSYSJ

Boston Logan Intl

Tue 4/21

5:30 am-11:15 am

1 stop4h 45m

Saint John

Tue 4/28

11:55 am-10:39 pm

2 stops11h 44m

$664

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 resultsSorted by cheapest first
1
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See travel insights to Saint John from

How to get the cheapest flight ticket from Boston to Saint John

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Boston Logan Intl to Saint John?

Air Canada and United Airlines are the most popular carriers operating from Boston Logan Intl to Saint John

When to book flights from Boston to Saint John

Are you open to changing your travel dates? Check out the ideal times to fly from Boston to Saint John according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Boston to Saint John (BOS to YSJ) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Boston to Saint John

Fastest flight time

4h 15m

Direct flights

None
The fastest flight from Boston to Saint John takes 4h 15m
There are no direct flights from Boston to Saint John. There are no popular flight routes from Boston to Saint John.
Search flight deals

  • How far is Boston Logan Intl to Saint John by plane?

    Saint John is 319.7 mi away from Boston Logan Intl. Flights usually cover this in 4h 15m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Boston Logan Intl Airport to Saint John Airport?

    Prices for flights from Boston Logan Intl Airport to Saint John Airport are updated daily.

  • How many operators does momondo search for flights from Boston Logan Intl Airport to Saint John Airport?

  • How old do you have to be to fly from Boston Logan Intl Airport to Saint John Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Boston Logan Intl Airport to Saint John Airport.

  • What documentation or ID do you need to fly to Saint John Airport?

    The travel and health documents required for your trip to Saint John Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Saint John Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from Boston to Saint John?

Best airlines flying from Boston to Saint John

Compare and see reviews for airlines that fly from Boston to Saint John with momondo
Airline
Rating
Free Cancellation
Price
Air CanadaPriceFrom $235Free CancellationRating
7.1
10,800 reviews
Search Air Canada flights

Traveling to a place near Saint John?

Book flights to Saint John if you plan to visit one of these locations
Bridgetown
Middleton

Why use momondo?

Why should I use momondo to find a flight deal from Boston to Saint John?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Boston to Saint John. momondo saves you time and could save you money on your trip.

Can I find flights from Boston to Saint John with flexible booking policies on momondo?

Yes. All flights to Saint John from Boston on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Boston to Saint John?

momondo provides multiple filters to help you find the best flight to Saint John from Boston. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Boston to Saint John right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Boston to Saint John now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Saint John and let you know when they change.

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