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Cheap flights from Boston to Belfast from $295

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 3/6. 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 round-trip flights

British Airways Logo
8:30 am - 10:40 amBOS-BHD
22h 10m1 stop
British Airways Logo
7:25 pm - 8:45 pmBHD-BOS
29h 20m1 stop
$517British Airways
Find Deal
Mon, Mar 9 - Mon, Mar 16
British Airways Logo
8:30 am - 10:40 amBOS-BHD
22h 10m1 stop
British Airways Logo
7:25 pm - 6:55 pmBHD-BOS
27h 30m2 stops
$537British Airways
Find Deal
Mon, Mar 9 - Mon, Mar 16
Multiple Airlines Logo
7:50 pm - 8:40 pmBOS-BFS
19h 50m2 stops
Multiple Airlines Logo
6:30 am - 5:50 pmBFS-BOS
16h 20m2 stops
$565Multiple Airlines
Find Deal
Thu, Nov 20 - Wed, Nov 26
American Airlines Logo
8:10 pm - 1:30 pmBOS-BHD
12h 20m1 stop
American Airlines Logo
6:50 am - 5:15 pmBHD-BOS
15h 25m2 stops
$572American Airlines
Find Deal
Wed, Oct 8 - Sun, Oct 12
British Airways Logo
7:39 pm - 2:15 pmBOS-BHD
14h 36m2 stops
British Airways Logo
7:25 pm - 6:55 pmBHD-BOS
27h 30m2 stops
$574British Airways
Find Deal
Mon, Mar 9 - Mon, Mar 16
Multiple Airlines Logo
11:35 am - 7:35 pmBOS-BHD
27h 00m2 stops
Multiple Airlines Logo
7:25 am - 5:50 pmBHD-BOS
15h 25m2 stops
$589Multiple Airlines
Find Deal
Thu, Nov 20 - Wed, Nov 26
American Airlines Logo
8:10 pm - 11:55 amBOS-BHD
10h 45m1 stop
American Airlines Logo
6:50 am - 5:10 pmBHD-BOS
15h 20m1 stop
$592American Airlines
Find Deal
Wed, Oct 8 - Sun, Oct 12
Multiple Airlines Logo
10:20 pm - 4:15 pmBOS-BFS
13h 55m2 stops
Multiple Airlines Logo
12:20 pm - 2:35 pmBFS-BOS
31h 15m3 stops
$596Multiple Airlines
Find Deal
Wed, Oct 29 - Wed, Nov 5
American Airlines Logo
7:25 pm - 4:40 pmBOS-BHD
16h 15m1 stop
American Airlines Logo
6:35 am - 4:10 pmBHD-BOS
14h 35m1 stop
$602American Airlines
Find Deal
Thu, Nov 20 - Wed, Nov 26
Delta Logo
8:50 pm - 9:15 pmBOS-BHD
19h 25m2 stops
Delta Logo
6:30 am - 4:30 pmBHD-BOS
15h 00m1 stop
$640Delta
Find Deal
Fri, Sep 26 - Tue, Sep 30

American Airlines flights from Boston to Belfast

Our best American Airlines deals on Boston to Belfast flight tickets
American Airlines
Oct 8
BOS8:10 pmBoston Logan Intl
12h 20m
1 stop
BHD1:30 pmBelfast City
Oct 12
BHD6:50 amBelfast City
15h 25m
2 stops
BOS5:15 pmBoston Logan Intl
$572
Find similar
American Airlines
Oct 8
BOS8:10 pmBoston Logan Intl
10h 45m
1 stop
BHD11:55 amBelfast City
Oct 12
BHD6:50 amBelfast City
15h 20m
1 stop
BOS5:10 pmBoston Logan Intl
$592
Find similar
American Airlines
Nov 20
BOS7:25 pmBoston Logan Intl
16h 15m
1 stop
BHD4:40 pmBelfast City
Nov 26
BHD6:35 amBelfast City
14h 35m
1 stop
BOS4:10 pmBoston Logan Intl
$602
Find similar

British Airways flights from Boston to Belfast

Our best British Airways deals on Boston to Belfast flight tickets
British Airways
Mar 9
BOS8:30 amBoston Logan Intl
22h 10m
1 stop
BHD10:40 amBelfast City
Mar 16
BHD7:25 pmBelfast City
29h 20m
1 stop
BOS8:45 pmBoston Logan Intl
$517
Find similar
British Airways
Mar 9
BOS8:30 amBoston Logan Intl
22h 10m
1 stop
BHD10:40 amBelfast City
Mar 16
BHD7:25 pmBelfast City
27h 30m
2 stops
BOS6:55 pmBoston Logan Intl
$537
Find similar
British Airways
Mar 9
BOS7:39 pmBoston Logan Intl
14h 36m
2 stops
BHD2:15 pmBelfast City
Mar 16
BHD7:25 pmBelfast City
27h 30m
2 stops
BOS6:55 pmBoston Logan Intl
$574
Find similar

momondo Fare Finder

 
Customize 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 832,500 searches. Data last updated September 16, 2025.
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 3/9

8:30 am-10:40 am

1 stop22h 10m

Belfast City

Mon 3/16

7:25 pm-8:45 pm

1 stop29h 20m

$517

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Mon 3/9

8:30 am-10:40 am

1 stop22h 10m

Belfast City

Mon 3/16

7:25 pm-6:55 pm

2 stops27h 30m

$537

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Thu 11/20

7:50 pm-8:40 pm

2 stops19h 50m

Belfast Intl

Wed 11/26

6:30 am-5:50 pm

2 stops16h 20m

$565

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Wed 10/8

8:10 pm-1:30 pm

1 stop12h 20m

Belfast City

Sun 10/12

6:50 am-5:15 pm

2 stops15h 25m

$572

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Mon 3/9

7:39 pm-2:15 pm

2 stops14h 36m

Belfast City

Mon 3/16

7:25 pm-6:55 pm

2 stops27h 30m

$574

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Thu 11/20

11:35 am-7:35 pm

2 stops27h 00m

Belfast City

Wed 11/26

7:25 am-5:50 pm

2 stops15h 25m

$589

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Wed 10/8

8:10 pm-11:55 am

1 stop10h 45m

Belfast City

Sun 10/12

6:50 am-5:10 pm

1 stop15h 20m

$592

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Wed 10/29

10:20 pm-4:15 pm

2 stops13h 55m

Belfast Intl

Wed 11/5

12:20 pm-2:35 pm

3 stops31h 15m

$596

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Thu 11/20

7:25 pm-4:40 pm

1 stop16h 15m

Belfast City

Wed 11/26

6:35 am-4:10 pm

1 stop14h 35m

$602

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

Fri 9/26

8:50 pm-9:15 pm

2 stops19h 25m

Belfast City

Tue 9/30

6:30 am-4:30 pm

1 stop15h 00m

$640

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 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 cheapest month to fly to Belfast?

In general, September is the cheapest month to fly from Boston to Belfast. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $623. If you don’t want to visit Belfast in September, then you should wait until August to fly from Boston, when ticket prices are also cheap, with an average price of $645.

What is the cheapest day to depart on your flight to Belfast?

The cheapest day to depart from Boston to Belfast is on a Wednesday when prices can be found for as low as $641. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Boston to Belfast for around $968.

What is the cheapest time of day to depart on your flight to Belfast?

Our data shows that the cheapest Boston to Belfast flights are usually those with departure times in the afternoon. Our users have found flights to Belfast in the afternoon for as low as $636. Try not to purchase tickets in the evening because they tend to be around $685. Of course, these prices can vary depending on the time of year and what airport you fly to.

Cheap Boston to Belfast flight deals and tips

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

Direct flights

None
There are no direct flights from Boston to Belfast. There are no popular flight routes from Boston to Belfast.
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  • How far is Boston Logan Intl to Belfast by plane?

    A flight from Boston Logan Intl to Belfast will travel around 2981.1 mi. Flights usually cover this in 10h 45m, depending on flying conditions and air traffic around both airports.

  • 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 refresh daily.

  • How many operators does momondo search for flights from Boston Logan Intl Airport to Belfast?

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to 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.

Best airlines flying from Boston to Belfast

Compare and see reviews for airlines that fly from Boston to Belfast with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom $538Free CancellationRating
6.7
7,363 reviews
Search British Airways flights
American AirlinesPriceFrom $581Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Boston to Belfast. momondo saves you time and could save you money on your trip.

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

Yes. momondo enables you to select and highlight flights to Belfast from Boston with this policy.

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

Once all potential Boston to Belfast flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Price alerts on flights to Belfast from Boston are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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