Cheap flights from Boston to Belfast from £204

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 6/9. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — BHD
5 Aug — 12 Aug1
1 adult

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 31 July 2025.

Round-trip from

£392

One-way from

£204

Popular in

December

Cheapest in

February

Average price

£727
British Airways
  • British Airways
  • 29/10-2/11
  • 2 total stops
  • 28h 25m total
  • Boston to Belfast
6/9
  • 6/9
  • 3 total stops
  • 49h 10m total
  • Boston to Belfast
Highest demand for flights based on searches. 11% potential increase in price (£57 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease (£14 potential savings vs. average return price).
Average for round-trip flights in July 2025

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 31 July 2025.

Wed 29/1020:15BOS - BHD
1 stop14h 00mBritish Airways
Sun 2/1105:30BHD - BOS
1 stop14h 25mBritish Airways
Deal found 29/7£392
Mon 18/820:10BOS - BHD
1 stop11h 45mAmerican Airlines
Tue 2/916:25BHD - BOS
1 stop23h 50mAmerican Airlines
Deal found 29/7£402
Mon 18/820:50BOS - BHD
2 stops19h 25mDelta
Tue 2/906:30BHD - BOS
2 stops19h 12mDelta
Deal found 29/7£432
Tue 25/1120:00BOS - BFS
2 stops20h 30mMultiple Airlines
Sun 30/1108:55BFS - BOS
2 stops37h 50mMultiple Airlines
Deal found 30/7£437
Sat 2/818:45BOS - BHD
1 stop17h 10mKLM
Mon 4/817:25BHD - BOS
1 stop30h 00mKLM
Deal found 29/7£553
Mon 18/815:20BOS - BHD
3 stops21h 55mMultiple Airlines
Tue 2/914:25BHD - BOS
3 stops32h 45mMultiple Airlines
Deal found 29/7£564
Mon 18/818:45BOS - BHD
1 stop17h 10mVirgin Atlantic
Tue 2/917:25BHD - BOS
1 stop30h 00mVirgin Atlantic
Deal found 29/7£628

Cheapflights Fare Finder

 
Customise 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 858,174 searches. Data last updated 31 July 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

Wed 29/10

20:15-14:15

1 stop14h 00m

Belfast City

Sun 2/11

05:30-15:55

1 stop14h 25m

£392

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Mon 18/8

20:10-12:55

1 stop11h 45m

Belfast City

Tue 2/9

16:25-11:15

1 stop23h 50m

£402

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Mon 18/8

20:50-21:15

2 stops19h 25m

Belfast City

Tue 2/9

06:30-20:42

2 stops19h 12m

£432

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Tue 25/11

20:00-21:30

2 stops20h 30m

Belfast Intl

Sun 30/11

08:55-17:45

2 stops37h 50m

£437

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Mon 18/8

15:20-18:15

3 stops21h 55m

Belfast City

Tue 2/9

14:25-18:10

3 stops32h 45m

£564

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Mon 18/8

18:45-16:55

1 stop17h 10m

Belfast City

Tue 2/9

17:25-18:25

1 stop30h 00m

£628

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Sat 6/9

06:00-12:10

3 stops49h 10m

£204

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Tue 26/8

07:30-10:05

1 stop21h 35m

£212

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Tue 26/8

17:59-13:00

2 stops14h 01m

£255

Flights are sorted by cheapest return flights first.

Deals found on 30/7

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 return 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, January is the cheapest month in which you can book a flight from Boston to Belfast (average of £67). Flying from Boston to Belfast in July is currently the most expensive (average of £90). 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.

How much does it cost for a return flight from Boston to Belfast?

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 31 July 2025.
Read reviews from past customers who have flown with Delta, Virgin Atlantic, andAmerican Airlines from Boston to Belfast. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
8.0
Very Good

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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?

    Located just 2.6 mi from the city center, Boston Logan Intl is the airport most travelers will use when flying to Belfast from Boston. Booking flights from Logan Intl (BOS) to Belfast should be relatively easy as there are 0 daily outbound flights to Belfast from 0 different airlines.

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

    Flying on British Airways is currently your cheapest option to Belfast, with prices starting at £392. Additional return tickets that might be worth considering are offered by American Airlines and Delta, with the lowest prices starting at £402 and £432, respectively. British Airways is priced at 30% lower than the current average price of a flight leaving 3 months from now.

  • 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 holiday 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, January is the cheapest month in which you can book a flight from Boston to Belfast (average of £67). Flying from Boston to Belfast in July is currently the most expensive (average of £90). 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

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Why should you use Cheapflights to find cheap flight tickets from Boston to Belfast?

Cheapflights simply makes it quick and affordable to book flights from Boston to Belfast by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Boston to Belfast with no change fees?

Certainly. Search results for flights to Belfast from Boston shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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Not ready to book yet? You can track prices for flights from Boston to Belfast on Cheapflights with our Price Alert feature and get notified when better prices are available.

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