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Belfast

$315+ 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 7/19. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — BHD
Jul 29 — Aug 51
Wed 7/29
Wed 8/5
1 adult, Economy
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Cheap 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 June 29, 2026.

This Mytrip deal was found by Cheapflights users on 6/26. 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.
Mon 9/711:00 pm
BOS
-
BFS
2 stops19h 10m
Multiple Airlines
Sun 9/1312:20 pm
BFS
-
BOS
2 stops35h 30m
Multiple Airlines
Deal found 6/26$744
This Mytrip deal was found by Cheapflights users on 6/26. 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 10/78:50 pm
BOS
-
BFS
2 stops18h 35m
Multiple Airlines
Wed 10/219:35 am
BFS
-
BOS
2 stops34h 10m
Multiple Airlines
Deal found 6/26$784
This Mytrip deal was found by Cheapflights users on 6/27. 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.
Tue 9/18:50 pm
BOS
-
BFS
2 stops21h 20m
Multiple Airlines
Fri 9/117:35 am
BFS
-
BOS
2 stops16h 15m
Multiple Airlines
Deal found 6/27$785
This Mytrip deal was found by Cheapflights users on 6/26. 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.
Fri 10/211:00 pm
BOS
-
BFS
2 stops19h 20m
Multiple Airlines
Thu 10/158:40 pm
BFS
-
BOS
2 stops24h 00m
Multiple Airlines
Deal found 6/26$792
This Mytrip deal was found by Cheapflights users on 6/26. 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.
Mon 9/78:50 pm
BOS
-
BHD
2 stops18h 40m
Multiple Airlines
Sun 9/133:10 pm
BHD
-
BOS
2 stops32h 40m
Multiple Airlines
Deal found 6/26$796
This Kiwi.com deal was found by Cheapflights users on 6/26. 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.
Sat 10/108:50 pm
BOS
-
BFS
2 stops17h 40m
Multiple Airlines
Thu 10/2210:15 am
BFS
-
BOS
1 stop15h 50m
Multiple Airlines
Deal found 6/26$802
This Kiwi.com deal was found by Cheapflights users on 6/26. 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 10/58:50 pm
BOS
-
BFS
2 stops17h 00m
Multiple Airlines
Thu 10/2210:15 am
BFS
-
BOS
1 stop15h 50m
Multiple Airlines
Deal found 6/26$805
This Mytrip deal was found by Cheapflights users on 6/28. 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 11/47:50 pm
BOS
-
BFS
3 stops19h 55m
Multiple Airlines
Wed 11/116:45 pm
BFS
-
BOS
3 stops30h 10m
Multiple Airlines
Deal found 6/28$806
This Mytrip deal was found by Cheapflights users on 6/26. 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 10/78:50 pm
BOS
-
BHD
2 stops17h 50m
Multiple Airlines
Wed 10/217:00 am
BHD
-
BOS
2 stops19h 45m
Multiple Airlines
Deal found 6/26$820
This Mytrip deal was found by Cheapflights users on 6/27. 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.
Tue 9/18:50 pm
BOS
-
BHD
2 stops16h 00m
Multiple Airlines
Fri 9/117:00 am
BHD
-
BOS
2 stops16h 50m
Multiple Airlines
Deal found 6/27$827
This Mytrip deal was found by Cheapflights users on 6/28. 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.
Sun 11/87:50 pm
BOS
-
BHD
2 stops19h 40m
Multiple Airlines
Sat 11/147:40 pm
BHD
-
BOS
3 stops29h 15m
Multiple Airlines
Deal found 6/28$834
This Priceline deal was found by Cheapflights users on 6/26. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/77:35 pm
BOS
-
BHD
1 stop13h 00m
British Airways
Wed 10/2110:05 am
BHD
-
BOS
1 stop11h 55m
British Airways
Deal found 6/26$859

Find 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 June 29, 2026.

Round-trip from

$744
(Mytrip)

One-way from

$315
(Kiwi.com)

Popular in

November

Cheapest in

February

Average price

$827
From Boston Logan Intl to Belfast
Search Deals
One-way flight from Boston Logan Intl to Belfast
Search Deals
Highest demand for flights based on searches. 38% potential increase in price ($603 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 15% potential price decrease ($129 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
Search Deals

Cheapflights Fare Finder

 
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 June 29, 2026.
Use the filters below to find and compare flights from Boston to Belfast that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Wed 10/7

8:50 pm-8:25 pm

2 stops18h 35m

Belfast Intl

Wed 10/21

9:35 am-2:45 pm

2 stops34h 10m

$784

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Tue 9/1

8:50 pm-11:10 pm

2 stops21h 20m

Belfast Intl

Fri 9/11

7:35 am-6:50 pm

2 stops16h 15m

$785

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Wed 11/25

7:50 pm-8:45 pm

3 stops19h 55m

Belfast Intl

Mon 11/30

10:05 pm-2:40 pm

3 stops45h 35m

$792

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Tue 10/6

8:50 pm-7:20 pm

2 stops17h 30m

Belfast Intl

Wed 10/21

9:35 am-9:05 pm

1 stop16h 30m

$805

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Sun 11/8

7:50 pm-8:35 pm

3 stops19h 45m

Belfast Intl

Sat 11/14

3:25 pm-2:40 pm

3 stops28h 15m

$810

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Mon 10/5

11:00 pm-11:20 pm

2 stops19h 20m

Belfast Intl

Mon 10/19

10:30 am-8:20 pm

1 stop14h 50m

$815

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Sat 10/10

8:50 pm-7:30 pm

2 stops17h 40m

Belfast Intl

Sun 10/18

6:10 am-9:45 pm

1 stop20h 35m

$815

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Wed 10/7

11:00 pm-7:40 pm

2 stops15h 40m

Belfast Intl

Sun 10/18

6:10 am-9:45 pm

1 stop20h 35m

$832

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Sun 11/8

12:03 pm-8:35 am

2 stops15h 32m

Belfast City

Sat 11/14

11:35 am-9:50 pm

1 stop15h 15m

$864

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Sun 11/8

7:50 pm-8:55 pm

3 stops20h 05m

Belfast City

Sat 11/14

7:40 pm-7:55 pm

3 stops29h 15m

$864

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/27

Showing 1-10 of 30 resultsSorted by cheapest first
1
2
3

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.

Cheapflights Insights

Everything you need to know about your flight from Boston to Belfast

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

Currently, March is the cheapest month in which you can book a flight from Boston to Belfast (average of $513). Flying from Boston to Belfast in December is currently the most expensive (average of $992). 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.

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 June 29, 2026.
See what other customers who have flown with British Airways from Boston to Belfast have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
British Airways
6.7
Okay
8,082 reviews

Boarding

6.9

Overall

6.7

Food

6.4

Comfort

6.8

Crew

7.7

Entertainment

6.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Jun 2026

IAH - LHR

Airline was good the flight attendant were very helpful and kind. The problem I had is with cheap tickets, my ticket was not allowed one check in baggage this was new to me. I do a lot of traveling overseas and 1 check in baggage is always allowed. Also I bought insurance for my ticket it proved to be useless. I have called several times and spoke to your customer service, not one single person mentioned it to me that baggage was not allowed. All this additional expense was too much for me. I even asked one of your customer service representative I need to buy extra baggage should I buy it now and he told me when you receive check in information you can buy it @ that time never mentioned it to me that my ticket didn’t include baggage. It was very frustrating. I will never use cheap ticket again.
British Airways
6.7
Okay
8,082 reviews
British Airways
6.7
Okay
8,082 reviews

Boarding

6.9

Overall

6.7

Food

6.4

Comfort

6.8

Crew

7.7

Entertainment

6.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Jun 2026

IAH - LHR

Airline was good the flight attendant were very helpful and kind. The problem I had is with cheap tickets, my ticket was not allowed one check in baggage this was new to me. I do a lot of traveling overseas and 1 check in baggage is always allowed. Also I bought insurance for my ticket it proved to be useless. I have called several times and spoke to your customer service, not one single person mentioned it to me that baggage was not allowed. All this additional expense was too much for me. I even asked one of your customer service representative I need to buy extra baggage should I buy it now and he told me when you receive check in information you can buy it @ that time never mentioned it to me that my ticket didn’t include baggage. It was very frustrating. I will never use cheap ticket again.

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 1 airline.

  • How long is the flight from Boston to Belfast?

    For as low as $864, British Airways can have you in Belfast from Boston in 15h 32m. There are 2981 mi between Boston and Belfast.

  • What is the cheapest airline to fly from Boston to Belfast round-trip?

    According to our current data, British Airways ($534), offers the cheapest pricing from Boston to Belfast. You may be able to fly from Boston to Belfast for 44% less than the average price by searching for this airline.

  • 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, March is the cheapest month in which you can book a flight from Boston to Belfast (average of $513). Flying from Boston to Belfast in December is currently the most expensive (average of $992). 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

Top airline flying from Boston to Belfast

Discover the top airline 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 June 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$534Average$650FlexibilityNo cancel feeOn-time70%

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