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$231+ 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 11/12. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — BHD
nov. 29 — dic. 61
sáb. 11/29
sáb. 12/6
1 adult, Economy
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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 octubre 30, 2025.

This Air France deal was found by Cheapflights users on 10/29. 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.
lun. 11/108:50 pmBOS - BHD
1 stop19h 10mKLM
lun. 11/175:20 pmBHD - BOS
1 stop25h 00mKLM
Deal found 10/29$559
This Air France deal was found by Cheapflights users on 10/29. 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.
lun. 12/17:10 pmBOS - BHD
1 stop16h 40mMultiple Airlines
mar. 12/166:30 amBHD - BOS
2 stops14h 41mMultiple Airlines
Deal found 10/29$569
This FlightHub deal was found by Cheapflights users on 10/29. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/49:35 pmBOS - BHD
1 stop14h 10mBritish Airways
jue. 11/63:05 pmBHD - BOS
2 stops29h 10mBritish Airways
Deal found 10/29$588
This American Airlines deal was found by Cheapflights users on 10/29. 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.
mié. 11/123:47 pmBOS - BHD
2 stops13h 28mAmerican Airlines
lun. 11/176:35 amBHD - BOS
1 stop14h 35mAmerican Airlines
Deal found 10/29$593
This American Airlines deal was found by Cheapflights users on 10/29. 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.
lun. 11/103:47 pmBOS - BHD
2 stops13h 53mAmerican Airlines
lun. 11/179:15 amBHD - BOS
1 stop11h 55mAmerican Airlines
Deal found 10/29$594
This Delta deal was found by Cheapflights users on 10/29. 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.
mié. 11/58:50 pmBOS - BHD
1 stop15h 00mDelta
dom. 11/95:20 pmBHD - BOS
1 stop25h 00mDelta
Deal found 10/29$609
This FlightHub deal was found by Cheapflights users on 10/29. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/1011:56 amBOS - BHD
2 stops17h 44mBritish Airways
lun. 11/177:25 pmBHD - BOS
2 stops25h 25mBritish Airways
Deal found 10/29$616
This Trip.com deal was found by Cheapflights users on 10/29. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/309:35 pmBOS - BHD
1 stop12h 15mBritish Airways
lun. 1/57:25 pmBHD - BOS
1 stop31h 30mBritish Airways
Deal found 10/29$619
This Delta deal was found by Cheapflights users on 10/29. 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.
mié. 11/121:10 pmBOS - BHD
2 stops22h 40mDelta
lun. 11/176:30 amBHD - BOS
2 stops17h 44mDelta
Deal found 10/29$623
This Mytrip deal was found by Cheapflights users on 10/29. 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.
lun. 12/17:50 pmBOS - BFS
2 stops20h 20mMultiple Airlines
mar. 12/168:10 amBFS - BOS
3 stops35h 25mMultiple Airlines
Deal found 10/29$637
This Mytrip deal was found by Cheapflights users on 10/29. 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.
jue. 12/47:50 pmBOS - BFS
2 stops21h 15mMultiple Airlines
lun. 12/88:40 amBFS - BOS
2 stops14h 10mMultiple Airlines
Deal found 10/29$649
This FlightHub deal was found by Cheapflights users on 10/29. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/136:55 pmBOS - BHD
1 stop10h 25mBritish Airways
lun. 11/177:25 pmBHD - BOS
2 stops25h 56mBritish Airways
Deal found 10/29$652

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 octubre 30, 2025.

Round-trip from

$559
(Air France)

One-way from

$231
(Mytrip)

Popular in

December

Cheapest in

September

Average price

$665
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. 11% potential increase in price ($95 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($25 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
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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 octubre 30, 2025.
Use the filters below to find and compare flights from Boston to Belfast that are best for you.

Fly from

Boston

Fly to

Belfast

Route

Depart

Return

Price

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

lun. 11/10

8:50 pm-9:00 pm

1 stop19h 10m

Belfast City

lun. 11/17

5:20 pm-1:20 pm

1 stop25h 00m

$559

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

lun. 12/1

7:10 pm-4:50 pm

1 stop16h 40m

Belfast City

mar. 12/16

6:30 am-1:20 pm

1 stop11h 50m

$559

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

mié. 11/12

8:50 pm-9:00 pm

1 stop19h 10m

Belfast City

lun. 11/17

5:20 pm-1:20 pm

1 stop25h 00m

$559

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

mié. 11/12

3:47 pm-10:15 am

2 stops13h 28m

Belfast City

lun. 11/17

6:35 am-4:10 pm

1 stop14h 35m

$593

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

lun. 11/10

3:47 pm-10:40 am

2 stops13h 53m

Belfast City

lun. 11/17

9:15 am-4:10 pm

1 stop11h 55m

$594

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

jue. 11/13

7:10 pm-4:50 pm

1 stop16h 40m

Belfast City

lun. 11/17

5:20 pm-1:20 pm

1 stop25h 00m

$609

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

lun. 11/10

11:56 am-10:40 am

2 stops17h 44m

Belfast City

lun. 11/17

7:25 pm-3:50 pm

2 stops25h 25m

$616

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

sáb. 3/14

7:39 pm-2:15 pm

2 stops14h 36m

Belfast City

dom. 3/22

12:10 pm-8:45 pm

1 stop12h 35m

$617

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

mar. 12/30

9:35 pm-2:50 pm

1 stop12h 15m

Belfast City

lun. 1/5

7:25 pm-9:55 pm

1 stop31h 30m

$619

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

mié. 11/12

1:10 pm-4:50 pm

2 stops22h 40m

Belfast City

lun. 11/17

6:30 am-7:14 pm

2 stops17h 44m

$623

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/30

Showing 1-10 of 27 results
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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, September is the cheapest month in which you can book a flight from Boston to Belfast (average of $534). Flying from Boston to Belfast in December is currently the most expensive (average of $994). 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 octubre 30, 2025.
See what other customers who have flown with American Airlines and 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.
American Airlines
7.2
Good
11,030 reviews

Crew

8.0

Comfort

7.2

Food

6.4

Entertainment

6.9

Boarding

7.5

Overall

7.2

Reviews

1 / 20
2.0
Mediocre

Jeremy,Sep 2025

SAN - PHL

Terrible. Bad customer service and unacceptable delay on the tarmac
American Airlines
7.2
Good
11,030 reviews
American Airlines
7.2
Good
11,030 reviews

Crew

8.0

Comfort

7.2

Food

6.4

Entertainment

6.9

Boarding

7.5

Overall

7.2

Reviews

1 / 20
2.0
Mediocre

Jeremy,Sep 2025

SAN - PHL

Terrible. Bad customer service and unacceptable delay on the tarmac
British Airways
6.7
Okay
7,487 reviews
American Airlines
7.2
Good
11,030 reviews

Crew

8.0

Comfort

7.2

Food

6.4

Entertainment

6.9

Boarding

7.5

Overall

7.2

Reviews

1 / 20
2.0
Mediocre

Jeremy,Sep 2025

SAN - PHL

Terrible. Bad customer service and unacceptable delay on the tarmac

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.

  • How long is the flight from Boston to Belfast?

    For as low as $593, KLM can have you in Belfast from Boston in 13h 28m. There are 2981 mi between Boston and Belfast. Both multi-stop and nonstop flights can be found to your destination and back.

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

    According to our current data, British Airways ($538), and American Airlines ($565) offers the cheapest pricing from Boston to Belfast. You may be able to fly from Boston to Belfast for 27% 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, September is the cheapest month in which you can book a flight from Boston to Belfast (average of $534). Flying from Boston to Belfast in December is currently the most expensive (average of $994). 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

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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 Intl 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 octubre 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$538Average$676FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$565Average$694FlexibilityNo cancel feeOn-time71%

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