How long is the flight from Boston to Belfast?

British Airways can get you from Boston to Belfast in just under 10h 30m. Your travel time can differ by up to . The distance from Boston to Belfast is about 2981 mi.

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.

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).

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

When flying from Boston to Belfast, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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.

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.

£227+ Cheap Flights from Boston to Belfast

Cheap flight deals from Boston to Belfast

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

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 19 August 2026.

Mon 5/1023:00 -

2 stops12h 15m

Wed 21/1009:35 -

1 stop16h 30m

Deal found 18/8£491

Tue 13/1020:50 -

2 stops19h 15m

Tue 20/1007:35 -

3 stops41h 45m

Deal found 14/8£561

Tue 15/912:30 -

2 stops26h 10m

Tue 22/922:30 -

3 stops45h 15m

Deal found 16/8£567

Wed 30/916:55 -

2 stops21h 20m

Wed 7/1008:30 -

3 stops35h 15m

Deal found 16/8£567

Mon 14/920:50 -

2 stops14h 25m

Wed 30/908:20 -

3 stops35h 25m

Deal found 14/8£580

Fri 2/1020:50 -

2 stops20h 00m

Fri 9/1021:30 -

3 stops27h 50m

Deal found 18/8£595

Tue 13/1018:05 -

2 stops18h 45m

Tue 20/1014:20 -

3 stops29h 25m

Deal found 14/8£626

Sat 19/920:50 -

2 stops19h 00m

Wed 23/907:00 -

3 stops35h 40m

Deal found 16/8£635

Wed 7/1015:35 -

2 stops18h 20m

Wed 21/1007:00 -

2 stops19h 45m

Deal found 18/8£638

Sun 13/920:50 -

2 stops19h 15m

Sun 20/907:00 -

3 stops39h 25m

Deal found 16/8£643

Fri 9/1017:25 -

2 stops22h 25m

Sun 11/1007:00 -

2 stops16h 50m

Deal found 14/8£653

Sun 20/920:50 -

2 stops15h 30m

Wed 23/907:00 -

3 stops35h 40m

Deal found 16/8£657

Best flights from Boston to Belfast
Discover carefully curated flight deals from Boston to Belfast that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 19 August 2026.

Mon 5/1023:00 -

2 stops12h 15m

Wed 21/1009:35 -

1 stop16h 30m

Deal found 18/8£491

Wed 25/1118:35 -

1 stop10h 30m

Wed 2/1211:40 -

1 stop13h 00m

Deal found 17/8£722

Tue 13/1020:50 -

2 stops19h 15m

Tue 20/1007:35 -

3 stops41h 45m

Deal found 14/8£561

Tue 15/912:30 -

2 stops26h 10m

Tue 22/922:30 -

3 stops45h 15m

Deal found 16/8£567

Mon 14/920:50 -

2 stops14h 25m

Wed 30/908:20 -

3 stops35h 25m

Deal found 14/8£580

Tue 24/1118:45 -

1 stop11h 05m

Mon 30/1117:35 -

1 stop25h 45m

Deal found 15/8£722

Sat 24/1020:50 -

2 stops15h 00m

Sat 31/1007:50 -

3 stops35h 50m

Deal found 17/8£582

Mon 23/1107:30 -

1 stop19h 20m

Tue 1/1208:45 -

1 stop10h 35m

Deal found 17/8£722

Fri 2/1020:50 -

2 stops20h 00m

Fri 9/1021:30 -

3 stops27h 50m

Deal found 18/8£595

Mon 25/118:35 -

1 stop11h 15m

Mon 1/217:35 -

1 stop31h 05m

Deal found 18/8£724

Sun 4/1021:55 -

1 stop11h 40m

Tue 20/1006:30 -

1 stop18h 35m

Deal found 18/8£745

Fri 25/905:50 -

3 stops34h 25m

Sun 4/1007:10 -

3 stops42h 10m

Deal found 16/8£623

Tue 6/1019:35 -

1 stop10h 10m

Fri 23/1006:30 -

1 stop18h 35m

Deal found 18/8£745

Thu 26/1118:35 -

1 stop11h 20m

Wed 2/1208:40 -

1 stop10h 40m

Deal found 17/8£759

Sat 10/1021:50 -

1 stop9h 35m

Thu 22/1014:20 -

1 stop10h 45m

Deal found 18/8£782

Fri 9/1007:25 -

1 stop20h 25m

Mon 19/1011:35 -

1 stop10h 25m

Deal found 18/8£819

Wed 25/1118:35 -

1 stop10h 30m

Sat 28/1115:15 -

1 stop11h 35m

Deal found 17/8£872

Sun 15/1117:30 -

2 stops15h 20m

Thu 19/1106:30 -

2 stops15h 20m

Deal found 15/8£872

Sun 18/1007:25 -

1 stop22h 05m

Wed 21/1016:05 -

1 stop11h 30m

Deal found 14/8£903

Find flight deals from Boston to Belfast

Round-trip from	£491
One-way from	£227
Popular in	November
Cheapest in	March
Average price	£919

5/10-21/10
3 total stops
28h 45m total
Boston to Belfast

Search Deals

14/10
2 total stops
28h 10m total
Boston to Belfast

Search Deals

Highest demand for flights based on searches. 33% potential increase in price (£284 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 16% potential price decrease (£81 potential savings vs. average return price).

Search Deals

Average for round-trip flights in August 2026

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BostonBelfast

BOS Boston Logan Intl - BFS Belfast Intl

BOSBFS

Boston Logan Intl

Mon 5/10

23:00-16:15

2 stops12h 15m

Belfast Intl

Wed 21/10

09:35-21:05

1 stop16h 30m

£491

BostonBelfast

BOS Boston Logan Intl - BFS Belfast Intl

BOSBFS

Boston Logan Intl

Tue 13/10

20:50-21:05

2 stops19h 15m

Belfast Intl

Tue 20/10

07:35-20:20

3 stops41h 45m

£561

BostonBelfast

BOS Boston Logan Intl - BFS Belfast Intl

BOSBFS

Boston Logan Intl

Tue 15/9

12:30-19:40

2 stops26h 10m

Belfast Intl

Tue 22/9

22:30-14:45

3 stops45h 15m

£567

BostonBelfast

BOS Boston Logan Intl - BFS Belfast Intl

BOSBFS

Boston Logan Intl

Mon 14/9

20:50-16:15

2 stops14h 25m

Belfast Intl

Wed 30/9

08:20-14:45

3 stops35h 25m

£580

BostonBelfast

BOS Boston Logan Intl - BFS Belfast Intl

BOSBFS

Boston Logan Intl

Sat 24/10

20:50-16:50

2 stops15h 00m

Belfast Intl

Sat 31/10

07:50-15:40

3 stops35h 50m

£582

BostonBelfast

BOS Boston Logan Intl - BFS Belfast Intl

BOSBFS

Boston Logan Intl

Fri 2/10

20:50-21:50

2 stops20h 00m

Belfast Intl

Fri 9/10

21:30-20:20

3 stops27h 50m

£595

BostonBelfast

BOS Boston Logan Intl - BFS Belfast Intl

BOSBFS

Boston Logan Intl

Fri 25/9

05:50-21:15

3 stops34h 25m

Belfast Intl

Sun 4/10

07:10-20:20

3 stops42h 10m

£623

BostonBelfast

BOS Boston Logan Intl - BHD Belfast City

BOSBHD

Boston Logan Intl

Wed 25/11

18:35-10:05

1 stop10h 30m

Belfast City

Wed 2/12

11:40-19:40

1 stop13h 00m

£722

BostonBelfast

BOS Boston Logan Intl - BHD Belfast City

BOSBHD

Boston Logan Intl

Tue 24/11

18:45-10:50

1 stop11h 05m

Belfast City

Mon 30/11

17:35-14:20

1 stop25h 45m

£722

BostonBelfast

BOS Boston Logan Intl - BHD Belfast City

BOSBHD

Boston Logan Intl

Mon 23/11

07:30-07:50

1 stop19h 20m

Belfast City

Tue 1/12

08:45-14:20

1 stop10h 35m

£722

Flights are sorted by cheapest return flights first.

Deals found on 13/8

Showing 1-10 of 26 resultsSorted by cheapest first

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.

BOS-BF1

BOS-BFS

BOS-BHD

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

BOS-BF1

BOS-BFS

BOS-BHD

No data available for this route at this time. Please check back soon.

Related info for your journey

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.
How long is the flight from Boston to Belfast?
British Airways can get you from Boston to Belfast in just under 10h 30m. Your travel time can differ by up to . The distance from Boston to Belfast is about 2981 mi.
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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Alternative routes

Complete your trip

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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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Cheap flights from Boston to Belfast from £227

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 14/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Boston to Belfast

Cheapest flights from Boston to BelfastExplore 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 19 August 2026.

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 19 August 2026.

Best flights from Boston to BelfastDiscover carefully curated flight deals from Boston to Belfast that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 19 August 2026.

Discover carefully curated flight deals from Boston to Belfast that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 19 August 2026.

Last-minute flights from Boston to BelfastDiscover last-minute flight deals from Boston to Belfast. Data last updated 19 August 2026 and is based on user searches.

Discover last-minute flight deals from Boston to Belfast. Data last updated 19 August 2026 and is based on user searches.

One-way flights from Boston to BelfastSearch for one-way flight options from Boston to Belfast. Find affordable one-way fares based on user searches. Data last updated 19 August 2026.

Search for one-way flight options from Boston to Belfast. Find affordable one-way fares based on user searches. Data last updated 19 August 2026.

Find flight deals from Boston to Belfast

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Best time to book a flight from Boston to Belfast

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Cheapflights Insights

Related info for your journey

What airport do you fly from for flights from Boston to Belfast?

How long is the flight from Boston to Belfast?

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

How can I find direct flights from Boston to Belfast?

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Boston to Belfast

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Belfast by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to Northern Ireland

Book a non-stop flight to one of these other cities located in Northern Ireland.

Search flights from Boston to Belfast by cabin class

Find flights from Boston to Belfast, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Boston and Belfast flights

Browse other Boston and Belfast flight options. Last updated on 19 August 2026.

Other flights from Boston

Browse through other flights departing from Boston. Flights are based on user searches made on Cheapflights and were last updated on 19 August 2026.

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Check out other popular destinations found by fellow travellers in 2026

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

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

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

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

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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 19 August 2026.

Best flights from Boston to Belfast
Discover carefully curated flight deals from Boston to Belfast that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 19 August 2026.

Last-minute flights from Boston to Belfast
Discover last-minute flight deals from Boston to Belfast. Data last updated 19 August 2026 and is based on user searches.

One-way flights from Boston to Belfast
Search for one-way flight options from Boston to Belfast. Find affordable one-way fares based on user searches. Data last updated 19 August 2026.