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$370+ Cheap flights from Boston (BOS) to Belfast

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/1. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — BHD
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
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Cheap flight deals from Boston to Belfast

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to Belfast (BF1). 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 20, 2025.

Round-trip from

$591
(Trip.com)

One-way from

$370
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$608
From Boston Logan Intl to Belfast
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One-way flight from Boston Logan Intl to Belfast
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Highest demand for flights based on searches. 17% potential increase in price ($160 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($19 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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Find flight deals from Boston to Belfast

Cheapest flights from Boston to Belfast
Explore the most affordable flight options available from Boston to Belfast. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.

This Kiwi.com deal was found by Cheapflights users on 2/18. 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.
Sun 3/3011:55 pmBOS - BFS
2 stops15h 30mMultiple Airlines
Wed 4/29:35 amBFS - BOS
1 stop16h 30mMultiple Airlines
Deal found 2/18$594
This oojo deal was found by Cheapflights users on 2/19. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/187:25 pmBOS - BHD
1 stop11h 05mBritish Airways
Mon 3/247:30 pmBHD - BOS
1 stop22h 35mBritish Airways
Deal found 2/19$623
This American Airlines deal was found by Cheapflights users on 2/19. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/208:00 pmBOS - BHD
1 stop17h 50mAmerican Airlines
Thu 2/2711:05 amBHD - BOS
2 stops16h 49mAmerican Airlines
Deal found 2/19$671
This Delta deal was found by Cheapflights users on 2/18. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/248:05 pmBOS - BHD
1 stop16h 45mDelta
Fri 3/286:30 amBHD - BOS
1 stop11h 55mDelta
Deal found 2/18$674
This Air France deal was found by Cheapflights users on 2/18. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/2610:15 pmBOS - BHD
1 stop14h 35mMultiple Airlines
Mon 3/316:30 amBHD - BOS
2 stops15h 47mMultiple Airlines
Deal found 2/18$684
This StudentUniverse deal was found by Cheapflights users on 2/20. 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 StudentUniverse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/127:49 pmBOS - BHD
2 stops33h 46mFinnair
Fri 5/168:05 pmBHD - BOS
1 stop20h 00mFinnair
Deal found 2/20$690
This Air France deal was found by Cheapflights users on 2/18. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/2810:15 pmBOS - BHD
1 stop18h 45mKLM
Tue 4/16:30 amBHD - BOS
2 stops13h 38mKLM
Deal found 2/18$751
This Gurufare deal was found by Cheapflights users on 2/19. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/117:15 amBOS - BHD
1 stop20h 35mAer Lingus
Fri 7/256:35 amBHD - BOS
1 stop15h 35mAer Lingus
Deal found 2/19$1,044

Find flights from Boston to Belfast within your budget

Customize your flight search to find flights from Boston to Belfast 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 20, 2025.

Fly from

Boston

Fly to

Belfast

Route

Depart

Return

Price

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Sun 3/30

11:55 pm-8:25 pm

2 stops15h 30m

Belfast Intl

Wed 4/2

9:35 am-9:05 pm

1 stop16h 30m

$594

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Tue 3/18

7:25 pm-10:30 am

1 stop11h 05m

Belfast City

Mon 3/24

7:30 pm-2:05 pm

1 stop22h 35m

$623

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Mon 3/24

8:05 pm-4:50 pm

1 stop16h 45m

Belfast City

Fri 3/28

6:30 am-2:25 pm

1 stop11h 55m

$674

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Wed 3/26

10:15 pm-4:50 pm

1 stop14h 35m

Belfast City

Mon 3/31

6:30 am-5:17 pm

2 stops15h 47m

$684

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Mon 5/12

7:49 pm-10:35 am

2 stops33h 46m

Belfast City

Fri 5/16

8:05 pm-11:05 am

1 stop20h 00m

$690

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Fri 3/28

10:15 pm-9:00 pm

1 stop18h 45m

Belfast City

Tue 4/1

6:30 am-3:08 pm

2 stops13h 38m

$751

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Fri 7/11

7:15 am-8:50 am

1 stop20h 35m

Belfast City

Fri 7/25

6:35 am-5:10 pm

1 stop15h 35m

$1,044

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Sun 6/1

11:35 pm-10:10 am

3 stops29h 35m

$370

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Wed 6/25

7:40 pm-11:55 am

1 stop11h 15m

$603

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Best time to book a flight from Boston to Belfast

Have a flexible travel schedule? Discover the best time to fly to Belfast from Boston 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.

Travel insights for flights from Boston to Belfast

Get recent, data-driven insights about flights from Boston to Belfast including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Boston to Belfast?

Currently, February is the cheapest month in which you can book a flight from Boston to Belfast (average of $657). Flying from Boston to Belfast in June is currently the most expensive (average of $1,189). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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

Find hourly flight availability from Boston to Belfast. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 20, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 13% on flights from Boston to Belfast by exploring options for tickets in the morning.

Rainfall in Belfast by month

Plan your trip to Belfast by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Belfast ranges from 2.0 - 3.5 inches per month. October is typically the wettest month, when rainfall can reach 3.5 in. April is typically the driest time to visit Belfast when rainfall is around 2.0 in.

Temperature in Belfast by month

Plan your trip to Belfast by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Belfast, 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 60.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 41.0 F).

Reviews of airlines servicing Belfast

Get insights into the airlines that provide service to Belfast. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Belfast. Reviews last updated February 20, 2025.
Delta
8.0
Very good
8,219 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta
8.0
Very good
8,219 reviews
Delta
8.0
Very good
8,219 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM
7.8
Good
1,333 reviews
Delta
8.0
Very good
8,219 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Finnair
7.6
Good
1,274 reviews
Delta
8.0
Very good
8,219 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Aer Lingus
7.0
Good
1,070 reviews
Delta
8.0
Very good
8,219 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

British Airways
6.6
Okay
6,762 reviews
Delta
8.0
Very good
8,219 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from Boston to Belfast. 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 from for flights from Boston to Belfast?

    If you book a flight to Belfast from Boston, you will be flying from Logan Intl, which is the city’s only airport. Boston Logan Intl (BOS) is located 2.6 mi from the center of Boston. There are 0 flights from Logan Intl to Belfast per day from 2 different airlines.

  • What are the cheapest airlines flying from Boston to Belfast round-trip?

    According to our current data, British Airways ($623), Delta ($674), and Finnair ($690) offers the cheapest pricing from Boston to Belfast. You may be able to fly from Boston to Belfast for 17% less than the average price by searching for these airlines.

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

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

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

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

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

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

  • What is the cheapest month to book a flight from Boston to Belfast?

    Currently, February is the cheapest month in which you can book a flight from Boston to Belfast (average of $657). Flying from Boston to Belfast in June is currently the most expensive (average of $1,189). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Boston to Belfast

See prices for flight routes from nearby airports that may be better suited for you.
Boston to Belfast Intl flights
Boston to Belfast City flights
Hartford to Belfast City flights
Worcester to Belfast City flights

Top 2 airlines flying from Boston to Belfast

Discover the top 2 airlines that operate flights from Boston to Belfast. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$586Average$658FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$595Average$678FlexibilityNo cancel feeOn-time70%
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