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Cheap flights from Boston to Belfast from £177

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Boston to Belfast departing on 8/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags
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Cheap return flights

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Multiple Airlines Logo
23:00 - 20:30
BOS
-
BHD
16h 30m
2 stops
Multiple Airlines Logo
12:45 - 21:45
BHD
-
BOS
38h 00m
2 stops
£389Multiple Airlines
Mon, 13 Apr - Wed, 29 Apr
Multiple Airlines Logo
21:50 - 15:30
BOS
-
BHD
12h 40m
1 stop
Multiple Airlines Logo
10:05 - 21:05
BHD
-
BOS
16h 00m
2 stops
£411Multiple Airlines
Mon, 13 Apr - Wed, 29 Apr
British Airways Logo
07:25 - 08:50
BOS
-
BHD
20h 25m
1 stop
British Airways Logo
11:35 - 17:00
BHD
-
BOS
10h 25m
1 stop
£412British Airways
Mon, 13 Apr - Wed, 29 Apr
American Airlines Logo
20:10 - 10:15
BOS
-
BHD
10h 05m
1 stop
American Airlines Logo
06:30 - 13:45
BHD
-
BOS
12h 15m
1 stop
£421American Airlines
Wed, 18 Mar - Wed, 1 Apr
Multiple Airlines Logo
22:50 - 20:55
BOS
-
BFS
17h 05m
2 stops
Multiple Airlines Logo
09:10 - 21:05
BFS
-
BOS
16h 55m
1 stop
£436Multiple Airlines
Mon, 13 Apr - Mon, 20 Apr
Multiple Airlines Logo
22:50 - 07:05
BOS
-
BFS
27h 15m
2 stops
Multiple Airlines Logo
09:35 - 21:05
BFS
-
BOS
16h 30m
1 stop
£438Multiple Airlines
Mon, 13 Apr - Wed, 29 Apr
Multiple Airlines Logo
22:50 - 09:20
BOS
-
BFS
29h 30m
2 stops
Multiple Airlines Logo
09:35 - 21:05
BFS
-
BOS
16h 30m
1 stop
£440Multiple Airlines
Mon, 13 Apr - Wed, 29 Apr
American Airlines Logo
21:50 - 15:30
BOS
-
BHD
12h 40m
1 stop
American Airlines Logo
06:30 - 17:00
BHD
-
BOS
15h 30m
1 stop
£452American Airlines
Mon, 13 Apr - Wed, 29 Apr
British Airways Logo
19:35 - 10:10
BOS
-
BHD
9h 35m
1 stop
British Airways Logo
16:05 - 22:35
BHD
-
BOS
11h 30m
1 stop
£467British Airways
Thu, 14 May - Wed, 20 May
British Airways Logo
19:35 - 18:45
BOS
-
BHD
18h 10m
1 stop
British Airways Logo
20:35 - 17:00
BHD
-
BOS
25h 25m
1 stop
£480British Airways
Thu, 9 Apr - Wed, 15 Apr

British Airways flights from Boston to Belfast

Our best British Airways deals on Boston to Belfast flight tickets
British Airways
13 Apr
BOS07:25Boston Logan Intl
20h 25m
1 stop
BHD08:50Belfast City
29 Apr
BHD11:35Belfast City
10h 25m
1 stop
BOS17:00Boston Logan Intl
£412
British Airways
14 May
BOS19:35Boston Logan Intl
9h 35m
1 stop
BHD10:10Belfast City
20 May
BHD16:05Belfast City
11h 30m
1 stop
BOS22:35Boston Logan Intl
£467
British Airways
9 Apr
BOS19:35Boston Logan Intl
18h 10m
1 stop
BHD18:45Belfast City
15 Apr
BHD20:35Belfast City
25h 25m
1 stop
BOS17:00Boston Logan Intl
£480

Aer Lingus flights from Boston to Belfast

Our best Aer Lingus deals on Boston to Belfast flight tickets
Aer Lingus
13 Apr
BOS17:25Boston Logan Intl
13h 30m
2 stops
BHD11:55Belfast City
29 Apr
BHD07:00Belfast City
12h 55m
2 stops
BOS14:55Boston Logan Intl
£601
Aer Lingus
12 Mar
BOS22:20Boston Logan Intl
14h 00m
2 stops
BHD16:20Belfast City
13 Mar
BHD19:35Belfast City
26h 15m
2 stops
BOS17:50Boston Logan Intl
£1,743

momondo 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, momondo users made 279,928 searches. Data last updated 27 February 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

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Mon 13/4

23:00-20:30

2 stops16h 30m

Belfast City

Wed 29/4

12:45-21:45

2 stops38h 00m

£389

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Mon 13/4

21:50-15:30

1 stop12h 40m

Belfast City

Wed 29/4

10:05-21:05

2 stops16h 00m

£411

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Mon 13/4

07:25-08:50

1 stop20h 25m

Belfast City

Wed 29/4

11:35-17:00

1 stop10h 25m

£412

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Wed 18/3

20:10-10:15

1 stop10h 05m

Belfast City

Wed 1/4

06:30-13:45

1 stop12h 15m

£421

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Mon 13/4

22:50-20:55

2 stops17h 05m

Belfast Intl

Mon 20/4

09:10-21:05

1 stop16h 55m

£436

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Mon 13/4

22:50-07:05

2 stops27h 15m

Belfast Intl

Wed 29/4

09:35-21:05

1 stop16h 30m

£438

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Mon 13/4

22:50-09:20

2 stops29h 30m

Belfast Intl

Wed 29/4

09:35-21:05

1 stop16h 30m

£440

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Mon 13/4

21:50-15:30

1 stop12h 40m

Belfast City

Wed 29/4

06:30-17:00

1 stop15h 30m

£452

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Thu 14/5

19:35-10:10

1 stop9h 35m

Belfast City

Wed 20/5

16:05-22:35

1 stop11h 30m

£467

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Thu 9/4

19:35-18:45

1 stop18h 10m

Belfast City

Wed 15/4

20:35-17:00

1 stop25h 25m

£480

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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See travel insights to Belfast from

How to get the cheapest flight ticket from Boston to Belfast

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Belfast?

The cheapest month to fly to Belfast from Boston is in January. Flight prices, which tend to average around £447, are often lower during this time because this is during the off-season. If you aren’t able to travel to Belfast during the month of January, then flying in August is also cheap. Prices for this month can be found on momondo for an average of £450.

Cheap Boston to Belfast flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Boston to Belfast

Fastest flight time

11h 40m

Direct flights

None
The fastest flight from Boston to Belfast takes 11h 40m
There are no direct flights from Boston to Belfast. There are no popular flight routes from Boston to Belfast.
Search flight deals

  • How far is Boston Logan Intl to Belfast by plane?

    Belfast is 2981.1 mi away from Boston Logan Intl. Typically, this will take 11h 40m by plane in normal conditions.

  • When did momondo last update prices for flights from Boston Logan Intl Airport to Belfast?

    Prices for flights from Boston Logan Intl Airport to Belfast are refreshed on a daily basis.

  • How old do you have to be to fly from Boston Logan Intl Airport to Belfast?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Boston Logan Intl Airport to Belfast.

  • What documentation or ID do you need to fly to Belfast?

    The travel and health documents required for your trip to Belfast can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Belfast. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Why use momondo?

Why should I use momondo to find a flight deal from Boston to Belfast?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Boston to Belfast for you.

Can I find flights from Boston to Belfast with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Boston to Belfast flights to just show those with flexible booking policies.

How can momondo help me find flights from Boston to Belfast?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Boston to Belfast.

I’m not ready to book a flight from Boston to Belfast right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Belfast, momondo offers a useful price alert feature which will track prices for flights to Belfast from Boston and alert you when they change.

An easier way to manage your Belfast trip

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Find better results for your trip to the United Kingdom

Fly into one of these airports located in Belfast

Airports listed have a maximum distance of 12.2 mi from Belfast
Belfast Intl Airport
Belfast City Airport