How long is the flight from Boston to Saint John?

Airlines like Air Canada and United Airlines fly from Boston to Saint John in about 3h 55m. The time it takes to get you to your destination can typically vary by up to . Boston and Saint John are separated by a distance of 327 mi.

In terms of precipitation, rainfall in Saint John ranges from 3.2 - 5.3 inches per month. November is typically the wettest month, when rainfall can reach 5.3 in. August is typically the driest time to visit Saint John when rainfall is around 3.2 in.

If weather is an important factor for your trip to Saint John, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 17.6 F).

What is the cheapest time of day to fly from BOS to YSJ?

When flying from Boston to Saint John, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Can I find deals for flights from Boston to St John that include hotel bookings?

Yes. In addition to deals on Boston to St John flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Boston to St John?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boston to St John.

Can I find deals for business class flights from Boston to St John?

Yes. Cheapflights offers flight deals from Boston to St John by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$329+ Cheap Flights from Boston to Saint John

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Cheap flight deals from Boston to St John

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Cheapest flights from Boston to St John
Explore the most affordable flight options available from Boston to St John. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 23, 2026.

Sun 12/65:30 am -

1 stop3h 55m

Sun 12/1311:05 am -

1 stop4h 48m

Deal found 10/22

$566

Fri 12/45:30 am -

1 stop3h 55m

Fri 12/1111:05 am -

1 stop4h 48m

Deal found 10/20

$690

Thu 12/35:30 am -

1 stop3h 49m

Thu 12/1011:05 am -

1 stop11h 23m

Deal found 10/19

$755

Sun 11/15:30 am -

1 stop3h 55m

Sat 11/75:35 pm -

1 stop6h 02m

Deal found 10/20

$997

Best flights from Boston to St John
Discover carefully curated flight deals from Boston to St John that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 23, 2026.

Sun 12/65:30 am -

1 stop3h 55m

Sun 12/1311:05 am -

1 stop4h 48m

Deal found 10/22

$566

Tue 3/305:30 am -

1 stop3h 55m

Wed 3/3111:05 am -

1 stop4h 47m

Deal found 10/21

$778

Fri 12/45:30 am -

1 stop3h 55m

Fri 12/1111:05 am -

1 stop4h 48m

Deal found 10/20

$690

Thu 12/35:30 am -

1 stop3h 49m

Thu 12/1011:05 am -

1 stop11h 23m

Deal found 10/19

$755

Tue 3/305:30 am -

1 stop3h 55m

Wed 3/3111:05 am -

1 stop4h 47m

Deal found 10/20

$844

Find flight deals from Boston to St John

Round-trip from	$566 (Air Canada)
One-way from	$329 (Air Canada)

From Boston Logan Intl to Saint John

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One-way flight from Boston Logan Intl to Saint John

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Cheapest round-trip

BostonSaint John

BOS Boston Logan Intl - YSJ Saint John

BOSYSJ

Boston Logan Intl

Thu 12/3

5:30 am-4:56 pm

2 stops10h 26m

Saint John

Wed 12/31

12:00 am-11:00 pm

Nonstop0h 00m

$337

BostonSaint John

BOS Boston Logan Intl - YSJ Saint John

BOSYSJ

Boston Logan Intl

Sun 12/6

5:30 am-10:25 am

1 stop3h 55m

Saint John

Sun 12/13

11:05 am-2:53 pm

1 stop4h 48m

$566

BostonSaint John

BOS Boston Logan Intl - YSJ Saint John

BOSYSJ

Boston Logan Intl

Fri 12/4

5:30 am-10:25 am

1 stop3h 55m

Saint John

Fri 12/11

11:05 am-2:53 pm

1 stop4h 48m

$690

BostonSaint John

BOS Boston Logan Intl - YSJ Saint John

BOSYSJ

Boston Logan Intl

Thu 12/3

5:30 am-10:19 am

1 stop3h 49m

Saint John

Thu 12/10

11:05 am-9:28 pm

1 stop11h 23m

$755

Quickest round-trip

BostonSaint John

BOS Boston Logan Intl - YSJ Saint John

BOSYSJ

Boston Logan Intl

Tue 3/30

5:30 am-10:25 am

1 stop3h 55m

Saint John

Wed 3/31

11:05 am-2:52 pm

1 stop4h 47m

$778

BostonSaint John

BOS Boston Logan Intl - YSJ Saint John

BOSYSJ

Boston Logan Intl

Tue 3/30

5:30 am-10:25 am

1 stop3h 55m

Saint John

Wed 3/31

11:05 am-2:52 pm

1 stop4h 47m

$844

BostonSaint John

BOS Boston Logan Intl - YSJ Saint John

BOSYSJ

Boston Logan Intl

Thu 12/3

3:42 pm-11:58 pm

3 stops31h 16m

Saint John

Wed 12/31

12:00 am-11:00 pm

Nonstop0h 00m

$1,089

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/19

Sorted by cheapest first

Best time to book a flight from Boston to St John

Have a flexible travel schedule? Discover the best time to fly to St John from Boston with our price prediction graph.

BOS-YSJ

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Related info for your journey

How long is the flight from Boston to Saint John?
Airlines like Air Canada and United Airlines fly from Boston to Saint John in about 3h 55m. The time it takes to get you to your destination can typically vary by up to . Boston and Saint John are separated by a distance of 327 mi.
Can I find deals for flights from Boston to St John that include hotel bookings?
Yes. In addition to deals on Boston to St John flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Boston to St John?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boston to St John.
Can I find deals for business class flights from Boston to St John?
Yes. Cheapflights offers flight deals from Boston to St John by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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$329+ Cheap flights from Boston (BOS) to Saint John (YSJ)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/3. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Boston to St John with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Boston to St John

Cheapest flights from Boston to St JohnExplore the most affordable flight options available from Boston to St John. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 23, 2026.

Explore the most affordable flight options available from Boston to St John. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 23, 2026.

Best flights from Boston to St JohnDiscover carefully curated flight deals from Boston to St John that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 23, 2026.

Discover carefully curated flight deals from Boston to St John that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 23, 2026.

Last-minute flights from Boston to St JohnDiscover last-minute flight deals from Boston to St John. Data last updated October 23, 2026 and is based on user searches.

Discover last-minute flight deals from Boston to St John. Data last updated October 23, 2026 and is based on user searches.

One-way flights from Boston to St JohnSearch for one-way flight options from Boston to St John. Find affordable one-way fares based on user searches. Data last updated October 23, 2026.

Search for one-way flight options from Boston to St John. Find affordable one-way fares based on user searches. Data last updated October 23, 2026.

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Best time to book a flight from Boston to St John

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Related info for your journey

How long is the flight from Boston to Saint John?

Can I find deals for flights from Boston to St John that include hotel bookings?

How can I find direct flights from Boston to St John?

Can I find deals for business class flights from Boston to St John?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Boston to St John

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Complete your trip

Complete your trip to St John by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Boston to St John by cabin class

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Boston and St John flights

Browse other Boston and St John flight options. Last updated on October 23, 2026.

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Cheapest flights from Boston to St John
Explore the most affordable flight options available from Boston to St John. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 23, 2026.

Best flights from Boston to St John
Discover carefully curated flight deals from Boston to St John that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 23, 2026.

Last-minute flights from Boston to St John
Discover last-minute flight deals from Boston to St John. Data last updated October 23, 2026 and is based on user searches.

One-way flights from Boston to St John
Search for one-way flight options from Boston to St John. Find affordable one-way fares based on user searches. Data last updated October 23, 2026.