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$544+ Cheap flights from Belfast Intl (BFS) to Boston (BOS)

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 3/4. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — BOS
Mar 16 — Mar 231
Mon 3/16
Mon 3/23
1 adult, Economy
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Cheap flight deals from Belfast Intl to Boston

Cheapest flights from Belfast Intl to Boston
Explore the most affordable flight options available from Belfast Intl to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 14, 2026.

This Mytrip deal was found by Cheapflights users on 2/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/46:30 am
BFS
-
BOS
2 stops16h 20m
Multiple Airlines
Sun 3/812:35 pm
BOS
-
BFS
2 stops27h 35m
Multiple Airlines
Deal found 2/13$544
This Kiwi.com deal was found by Cheapflights users on 2/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/309:10 am
BFS
-
BOS
1 stop16h 55m
Multiple Airlines
Mon 4/611:00 pm
BOS
-
BFS
2 stops27h 05m
Multiple Airlines
Deal found 2/13$772
This Booking.com deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/275:45 am
BFS
-
BOS
2 stops20h 30m
Multiple Airlines
Fri 4/38:50 pm
BOS
-
BFS
3 stops19h 55m
Multiple Airlines
Deal found 2/10$1,105

Find flight deals from Belfast Intl to Boston

Discover tips and strategies to find the most affordable flight options for your journey from Belfast Intl (BFS) to Boston (BOS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated February 14, 2026.

Round-trip from

$544
(Mytrip)

Popular in

December

Cheapest in

February

Average price

$530
From Belfast Intl to Boston Logan Intl
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($55 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($27 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Belfast Intl to Boston 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, Cheapflights users made 2,558,603 searches. Data last updated February 14, 2026.
Use the filters below to find and compare flights from Belfast Intl Airport to Boston that are best for you.

Fly from

Belfast Intl

Fly to

Boston

Route

Depart

Return

Price

BelfastBoston

BFS - BOS

BFSBOS

Belfast Intl

Wed 3/4

6:30 am-5:50 pm

2 stops16h 20m

Boston Logan Intl

Sun 3/8

12:35 pm-8:10 pm

2 stops27h 35m

$544

BelfastBoston

BFS - BOS

BFSBOS

Belfast Intl

Mon 3/30

9:10 am-9:05 pm

1 stop16h 55m

Boston Logan Intl

Mon 4/6

11:00 pm-7:05 am

2 stops27h 05m

$772

BelfastBoston

BFS - BOS

BFSBOS

Belfast Intl

Fri 3/27

5:45 am-10:15 pm

2 stops20h 30m

Boston Logan Intl

Fri 4/3

8:50 pm-9:45 pm

3 stops19h 55m

$1,105

BelfastBoston

BFS - BOS

BFSBOS

Belfast Intl

Mon 6/29

8:40 am-7:41 pm

3 stops40h 01m

$589

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/10

Best time to book a flight from Belfast Intl to Boston

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

Find useful and relevant information for your journey from Belfast Intl to Boston. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Boston from Belfast Intl?

    Most people fly into Boston Logan Intl (BOS) if they book a flight to Boston from Belfast Intl. On average, Logan Intl has 0 inbound flights from Belfast Intl per day from 0 airlines. Boston Logan Intl is conveniently located just 2.6 mi from Boston’s city center.

  • Can I find deals for flights from Belfast Intl to Boston that include hotel bookings?

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

  • How can I find direct flights from Belfast Intl to Boston?

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

  • Can I find deals for business class flights from Belfast Intl to Boston?

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

See more FAQs

Traveling to a place near Boston?

Book flights to Boston if you plan to visit one of these locations
Medford
Cambridge
Hampton Beach
Watertown
Seekonk
Brockton
Concord
Seabrook
Cranston
Lincoln
Warwick
Smithfield
Peabody
Quincy
York Beach
Londonderry
Swansea
Old Orchard Beach
Waltham
Lowell

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Alternative routes for Belfast Intl to Boston

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