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Cheap flights from Boston to Belfast from £181

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 27/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags
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Find the cheapest flights from Boston to Belfast

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
10:05 - 21:50
BOS
-
BFS
30h 45m
2 stops
Multiple Airlines Logo
08:50 - 14:45
BFS
-
BOS
34h 55m
3 stops
£605Multiple Airlines
Fri, 5 Jun - Tue, 9 Jun
Multiple Airlines Logo
05:50 - 21:50
BOS
-
BFS
35h 00m
3 stops
Multiple Airlines Logo
08:50 - 14:45
BFS
-
BOS
34h 55m
3 stops
£626Multiple Airlines
Fri, 5 Jun - Tue, 9 Jun
Multiple Airlines Logo
05:50 - 21:00
BOS
-
BHD
34h 10m
3 stops
Multiple Airlines Logo
07:00 - 21:45
BHD
-
BOS
19h 45m
2 stops
£655Multiple Airlines
Fri, 5 Jun - Tue, 9 Jun
Multiple Airlines Logo
10:45 - 21:50
BOS
-
BFS
30h 05m
2 stops
Multiple Airlines Logo
06:15 - 21:45
BFS
-
BOS
20h 30m
2 stops
£662Multiple Airlines
Fri, 5 Jun - Tue, 9 Jun
Multiple Airlines Logo
18:05 - 13:30
BOS
-
BFS
14h 25m
2 stops
Multiple Airlines Logo
17:45 - 21:15
BFS
-
BOS
32h 30m
1 stop
£668Multiple Airlines
Tue, 18 Aug - Wed, 26 Aug
British Airways Logo
19:35 - 13:35
BOS
-
BHD
13h 00m
1 stop
British Airways Logo
09:40 - 20:05
BHD
-
BOS
15h 25m
1 stop
£669British Airways
Wed, 16 Sep - Tue, 22 Sep
British Airways Logo
21:55 - 14:35
BOS
-
BHD
11h 40m
1 stop
British Airways Logo
11:00 - 20:10
BHD
-
BOS
14h 10m
1 stop
£672British Airways
Sun, 23 Aug - Sun, 30 Aug
British Airways Logo
21:50 - 15:30
BOS
-
BHD
12h 40m
1 stop
British Airways Logo
16:05 - 22:35
BHD
-
BOS
11h 30m
1 stop
£675British Airways
Mon, 4 May - Wed, 13 May
Multiple Airlines Logo
18:05 - 13:50
BOS
-
BFS
14h 45m
2 stops
Multiple Airlines Logo
17:45 - 21:15
BFS
-
BOS
32h 30m
1 stop
£676Multiple Airlines
Sun, 16 Aug - Wed, 26 Aug
Multiple Airlines Logo
10:05 - 21:00
BOS
-
BHD
29h 55m
2 stops
Multiple Airlines Logo
10:20 - 21:45
BHD
-
BOS
16h 25m
2 stops
£680Multiple Airlines
Fri, 5 Jun - Tue, 9 Jun

Delta flights from Boston to Belfast

Our best Delta deals on Boston to Belfast flight tickets
Delta
14 Aug
BOS16:45Boston Logan Intl
11h 35m
1 stop
BHD09:20Belfast City
21 Aug
BHD09:50Belfast City
13h 40m
1 stop
BOS18:30Boston Logan Intl
£701
Delta
6 May
BOS18:10Boston Logan Intl
17h 45m
2 stops
BHD16:55Belfast City
9 May
BHD17:30Belfast City
27h 55m
1 stop
BOS16:25Boston Logan Intl
£704
Delta
14 Aug
BOS16:45Boston Logan Intl
11h 35m
1 stop
BHD09:20Belfast City
25 Aug
BHD09:50Belfast City
17h 46m
2 stops
BOS22:36Boston Logan Intl
£708

British Airways flights from Boston to Belfast

Our best British Airways deals on Boston to Belfast flight tickets
British Airways
16 Sept
BOS19:35Boston Logan Intl
13h 00m
1 stop
BHD13:35Belfast City
22 Sept
BHD09:40Belfast City
15h 25m
1 stop
BOS20:05Boston Logan Intl
£669
British Airways
23 Aug
BOS21:55Boston Logan Intl
11h 40m
1 stop
BHD14:35Belfast City
30 Aug
BHD11:00Belfast City
14h 10m
1 stop
BOS20:10Boston Logan Intl
£672
British Airways
4 May
BOS21:50Boston Logan Intl
12h 40m
1 stop
BHD15:30Belfast City
13 May
BHD16:05Belfast City
11h 30m
1 stop
BOS22:35Boston Logan Intl
£675

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 2 April 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

Cheapest return flight

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Fri 5/6

10:05-21:50

2 stops30h 45m

Belfast Intl

Tue 9/6

08:50-14:45

3 stops34h 55m

£605

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Fri 5/6

05:50-21:50

3 stops35h 00m

Belfast Intl

Tue 9/6

08:50-14:45

3 stops34h 55m

£626

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Fri 5/6

05:50-21:00

3 stops34h 10m

Belfast City

Tue 9/6

07:00-21:45

2 stops19h 45m

£655

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Fri 5/6

10:45-21:50

2 stops30h 05m

Belfast Intl

Tue 9/6

06:15-21:45

2 stops20h 30m

£662

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Tue 18/8

18:05-13:30

2 stops14h 25m

Belfast Intl

Wed 26/8

17:45-21:15

1 stop32h 30m

£668

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Wed 16/9

19:35-13:35

1 stop13h 00m

Belfast City

Tue 22/9

09:40-20:05

1 stop15h 25m

£669

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Sun 23/8

21:55-14:35

1 stop11h 40m

Belfast City

Sun 30/8

11:00-20:10

1 stop14h 10m

£672
Fastest return journey

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Mon 4/5

21:50-15:30

1 stop12h 40m

Belfast City

Wed 13/5

16:05-22:35

1 stop11h 30m

£675

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Sun 16/8

18:05-13:50

2 stops14h 45m

Belfast Intl

Wed 26/8

17:45-21:15

1 stop32h 30m

£676

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Fri 5/6

10:05-21:00

2 stops29h 55m

Belfast City

Tue 9/6

10:20-21:45

2 stops16h 25m

£680

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 typical price of a round-trip flight between Boston and Belfast?

What is the cheapest month to fly to Belfast?

The cheapest month to fly to Belfast from Boston is in February. Flight prices, which tend to average around £408, 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 February, then flying in March 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

9h 35m

Direct flights

None
The fastest flight from Boston to Belfast takes 9h 35m
There are no direct flights from Boston to Belfast. There are no popular flight routes from Boston to Belfast.
Search flight deals

Frequently asked questions about flying from Boston to Belfast

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

    Belfast is 2981.1 mi away from Boston Logan Intl. Typically, this will take 9h 35m 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

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
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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