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Cheap flights from Boston to Belfast from £242

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 14/5. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — BHD
5 May — 12 May1
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 30 April 2025.

Round-trip from

£426

One-way from

£242

Popular in

July

Cheapest in

February

Average price

£493
Iberia
  • Iberia
  • 15/9-24/9
  • 2 total stops
  • 32h 10m total
  • Boston to Belfast
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14/5
  • 14/5
  • 2 total stops
  • 15h 15m total
  • Boston to Belfast
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (£70 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease (£14 potential savings vs. average return price).
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Average for round-trip flights in April 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 30 April 2025.

Mon 5/519:15BOS - BFS
2 stops13h 35mMultiple Airlines
Tue 13/506:45BFS - BOS
2 stops16h 05mMultiple Airlines
Deal found 28/4£424
Mon 15/919:40BOS - BHD
1 stop16h 50mIberia
Wed 24/906:50BHD - BOS
1 stop15h 20mIberia
Deal found 29/4£426
Mon 8/922:00BOS - BHD
1 stop12h 40mMultiple Airlines
Tue 16/916:25BHD - BOS
1 stop23h 50mMultiple Airlines
Deal found 29/4£430
Mon 8/917:48BOS - BHD
2 stops14h 07mBritish Airways
Tue 16/909:35BHD - BOS
2 stops15h 15mBritish Airways
Deal found 29/4£459
Tue 6/507:25BOS - BHD
1 stop20h 35mAmerican Airlines
Tue 13/506:35BHD - BOS
1 stop15h 30mAmerican Airlines
Deal found 29/4£469
Tue 29/418:50BOS - BHD
2 stops17h 05mDelta
Wed 7/506:30BHD - BOS
2 stops17h 38mDelta
Deal found 29/4£535
Tue 15/717:30BOS - BHD
2 stops14h 20mAer Lingus
Fri 18/706:45BHD - BOS
2 stops17h 00mAer Lingus
Deal found 29/4£1,002

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 30 April 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

Mon 15/9

19:40-17:30

1 stop16h 50m

Belfast City

Wed 24/9

06:50-17:10

1 stop15h 20m

£426

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Mon 8/9

22:00-15:40

1 stop12h 40m

Belfast City

Tue 16/9

16:25-11:15

1 stop23h 50m

£430

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Mon 8/9

17:48-12:55

2 stops14h 07m

Belfast City

Tue 16/9

09:35-19:50

2 stops15h 15m

£459

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Mon 15/9

22:00-12:55

1 stop9h 55m

Belfast City

Wed 24/9

06:50-17:01

2 stops15h 11m

£497

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Thu 12/6

08:45-16:15

3 stops26h 30m

Belfast Intl

Thu 19/6

06:10-07:12

3 stops30h 02m

£590

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Sun 1/6

17:19-21:15

2 stops22h 56m

Belfast City

Sun 8/6

06:30-19:14

2 stops17h 44m

£669

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Tue 15/7

17:30-12:50

2 stops14h 20m

Belfast City

Fri 18/7

06:45-18:45

2 stops17h 00m

£1,002

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Wed 14/5

19:15-15:30

2 stops15h 15m

£242

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Wed 14/5

19:15-14:40

2 stops14h 25m

£249

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Wed 14/5

19:40-11:55

1 stop11h 15m

£324

Flights are sorted by cheapest return flights first.

Deals found on 29/4

Showing 1-10 of 11 results
1
2

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.

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 50.0 - 90.0 inches per month. October is typically the wettest month, when rainfall can reach 90.0 mm. April is typically the driest time to visit Belfast when rainfall is around 50.0 mm.

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 16.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 5.0 C).

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 30 April 2025.
See what other customers who have flown with Delta, American Airlines and Aer Lingus from Boston to Belfast have to say. 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.
Delta
8.0
Very Good
7,934 reviews
Check prices

Comfort

7.9

Boarding

8.2

Overall

8.0

Food

7.3

Entertainment

7.9

Crew

8.5

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
7,934 reviews
Delta
8.0
Very Good
7,934 reviews
Check prices

Comfort

7.9

Boarding

8.2

Overall

8.0

Food

7.3

Entertainment

7.9

Crew

8.5

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.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very Good
7,934 reviews
Check prices

Comfort

7.9

Boarding

8.2

Overall

8.0

Food

7.3

Entertainment

7.9

Crew

8.5

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
1,076 reviews
Delta
8.0
Very Good
7,934 reviews
Check prices

Comfort

7.9

Boarding

8.2

Overall

8.0

Food

7.3

Entertainment

7.9

Crew

8.5

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.
Iberia
7.0
Good
2,698 reviews
Delta
8.0
Very Good
7,934 reviews
Check prices

Comfort

7.9

Boarding

8.2

Overall

8.0

Food

7.3

Entertainment

7.9

Crew

8.5

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
6,842 reviews
Delta
8.0
Very Good
7,934 reviews
Check prices

Comfort

7.9

Boarding

8.2

Overall

8.0

Food

7.3

Entertainment

7.9

Crew

8.5

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?

    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 Iberia is currently your cheapest option to Belfast, with prices starting at £426. Additional return tickets that might be worth considering are offered by British Airways and American Airlines, with the lowest prices starting at £459 and £497, respectively. Iberia is priced at 23% 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

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

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Boston to Belfast?

Cheapflights makes it easy to find Boston to Belfast flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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.

Can Cheapflights notify me if prices for flights from Boston to Belfast become cheaper?

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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