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Cheap flights from Massachusetts to Belfast from $320

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Massachusetts to Belfast departing on 9/17. 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
1 adult, Economy, 0 bags

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Find the cheapest flights from Massachusetts to Belfast

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
8:50 pm - 11:10 pmBOS  Boston Logan Intl-BFS Belfast Intl
21h 20m2 stops Reykjavik Keflavik Intl London Gatwick
Multiple Airlines Logo
5:10 pm - 8:20 pmBFS  Belfast Intl-BOS Boston Logan Intl
32h 10m3 stops Malaga Barcelona-El Prat Lisbon Humberto Delgado
$736Multiple Airlines
Mon, Sep 7 - Tue, Sep 22
Multiple Airlines Logo
8:50 pm - 3:30 pmBOS  Boston Logan Intl-BFS Belfast Intl
13h 40m2 stops Reykjavik Keflavik Intl London Gatwick
Multiple Airlines Logo
9:05 pm - 2:45 pmBFS  Belfast Intl-BOS Boston Logan Intl
46h 40m3 stops Palma de Mallorca Son Sant Joan Barcelona-El Prat Lisbon Humberto Delgado
$752Multiple Airlines
Mon, Sep 7 - Mon, Sep 14
Multiple Airlines Logo
8:50 pm - 8:25 pmBOS  Boston Logan Intl-BFS Belfast Intl
18h 35m2 stops Reykjavik Keflavik Intl London Gatwick
Multiple Airlines Logo
5:10 pm - 9:45 pmBFS  Belfast Intl-BOS Boston Logan Intl
33h 35m3 stops Malaga London Gatwick Reykjavik Keflavik Intl
$753Multiple Airlines
Mon, Sep 14 - Tue, Sep 29
Multiple Airlines Logo
8:50 pm - 8:25 pmBOS  Boston Logan Intl-BFS Belfast Intl
18h 35m2 stops Reykjavik Keflavik Intl London Gatwick
Multiple Airlines Logo
5:10 pm - 9:45 pmBFS  Belfast Intl-BOS Boston Logan Intl
33h 35m3 stops Malaga London Gatwick Reykjavik Keflavik Intl
$762Multiple Airlines
Mon, Sep 14 - Tue, Sep 29
Multiple Airlines Logo
8:50 pm - 8:25 pmBOS  Boston Logan Intl-BFS Belfast Intl
18h 35m2 stops Reykjavik Keflavik Intl London Gatwick
Multiple Airlines Logo
6:40 am - 8:20 pmBFS  Belfast Intl-BOS Boston Logan Intl
42h 40m3 stops London Stansted Barcelona-El Prat Lisbon Humberto Delgado
$764Multiple Airlines
Mon, Sep 14 - Tue, Sep 29
Multiple Airlines Logo
7:50 pm - 8:50 pmBOS  Boston Logan Intl-BFS Belfast Intl
20h 00m2 stops Reykjavik Keflavik Intl Edinburgh Turnhouse
Multiple Airlines Logo
5:05 pm - 2:40 pmBFS  Belfast Intl-BOS Boston Logan Intl
26h 35m3 stops London Stansted Barcelona-El Prat Lisbon Humberto Delgado
$777Multiple Airlines
Wed, Nov 4 - Tue, Nov 10
Multiple Airlines Logo
11:00 pm - 5:05 pmBOS  Boston Logan Intl-BFS Belfast Intl
13h 05m2 stops Reykjavik Keflavik Intl Glasgow Intl
Multiple Airlines Logo
8:50 am - 2:45 pmBFS  Belfast Intl-BOS Boston Logan Intl
34h 55m3 stops London Stansted Barcelona-El Prat Lisbon Humberto Delgado
$789Multiple Airlines
Wed, Sep 23 - Tue, Oct 6
Multiple Airlines Logo
7:50 pm - 7:05 pmBOS  Boston Logan Intl-BFS Belfast Intl
18h 15m2 stops Reykjavik Keflavik Intl Paris Charles de Gaulle
Multiple Airlines Logo
7:05 am - 5:50 pmBFS  Belfast Intl-BOS Boston Logan Intl
15h 45m2 stops Paris Charles de Gaulle Reykjavik Keflavik Intl
$789Multiple Airlines
Wed, Nov 4 - Tue, Nov 10
British Airways Logo
9:30 pm - 4:45 pmBOS  Boston Logan Intl-BHD Belfast City
14h 15m1 stop London Heathrow
British Airways Logo
2:40 pm - 9:50 pmBHD  Belfast City-BOS Boston Logan Intl
12h 10m1 stop London Heathrow
$911British Airways
Tue, Nov 24 - Mon, Nov 30
British Airways Logo
9:30 pm - 2:15 pmBOS  Boston Logan Intl-BHD Belfast City
11h 45m1 stop London Heathrow
British Airways Logo
11:25 am - 7:40 pmBHD  Belfast City-BOS Boston Logan Intl
13h 15m1 stop London Heathrow
$913British Airways
Wed, Nov 25 - Tue, Dec 1

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British Airways flights from Massachusetts to Belfast

Our best British Airways deals on Massachusetts to Belfast flight tickets
British Airways
Nov 24
BOS9:30 pmBoston Logan Intl
14h 15m
1 stop
BHD4:45 pmBelfast City
Nov 30
BHD2:40 pmBelfast City
12h 10m
1 stop
BOS9:50 pmBoston Logan Intl
$911
British Airways
Nov 25
BOS9:30 pmBoston Logan Intl
11h 45m
1 stop
BHD2:15 pmBelfast City
Dec 1
BHD11:25 amBelfast City
13h 15m
1 stop
BOS7:40 pmBoston Logan Intl
$913
British Airways
Jan 26
BOS6:45 pmBoston Logan Intl
10h 45m
1 stop
BHD10:30 amBelfast City
Feb 1
BHD2:40 pmBelfast City
12h 10m
1 stop
BOS9:50 pmBoston Logan Intl
$921

KLM flights from Massachusetts to Belfast

Our best KLM deals on Massachusetts to Belfast flight tickets
KLM
Sep 7
BOS4:40 pmBoston Logan Intl
11h 40m
1 stop
BHD9:20 amBelfast City
Sep 14
BHD5:30 pmBelfast City
34h 40m
2 stops
BOS11:10 pmBoston Logan Intl
$985
KLM
Nov 25
BOS1:35 pmBoston Logan Intl
14h 35m
2 stops
BHD9:10 amBelfast City
Dec 1
BHD5:20 pmBelfast City
26h 13m
2 stops
BOS2:33 pmBoston Logan Intl
$999

momondo Fare Finder

 
Customize your flight search to find flights from Massachusetts 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 August 9, 2026.
Use the filters below to find and compare flights from Massachusetts to Belfast that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BostonBelfast

BOS Boston Logan Intl - BFS Belfast Intl

BOSBFS

Boston Logan Intl

Mon 9/7

8:50 pm-11:10 pm

2 stops21h 20m

Belfast Intl

Tue 9/22

5:10 pm-8:20 pm

3 stops32h 10m

$736

BostonBelfast

BOS Boston Logan Intl - BFS Belfast Intl

BOSBFS

Boston Logan Intl

Mon 9/7

8:50 pm-3:30 pm

2 stops13h 40m

Belfast Intl

Mon 9/14

9:05 pm-2:45 pm

3 stops46h 40m

$752

BostonBelfast

BOS Boston Logan Intl - BFS Belfast Intl

BOSBFS

Boston Logan Intl

Mon 9/14

8:50 pm-8:25 pm

2 stops18h 35m

Belfast Intl

Tue 9/29

5:10 pm-9:45 pm

3 stops33h 35m

$753

BostonBelfast

BOS Boston Logan Intl - BFS Belfast Intl

BOSBFS

Boston Logan Intl

Mon 9/14

8:50 pm-8:25 pm

2 stops18h 35m

Belfast Intl

Tue 9/29

5:10 pm-9:45 pm

3 stops33h 35m

$762

BostonBelfast

BOS Boston Logan Intl - BFS Belfast Intl

BOSBFS

Boston Logan Intl

Mon 9/14

8:50 pm-8:25 pm

2 stops18h 35m

Belfast Intl

Tue 9/29

6:40 am-8:20 pm

3 stops42h 40m

$764

BostonBelfast

BOS Boston Logan Intl - BFS Belfast Intl

BOSBFS

Boston Logan Intl

Wed 11/4

7:50 pm-8:50 pm

2 stops20h 00m

Belfast Intl

Tue 11/10

5:05 pm-2:40 pm

3 stops26h 35m

$777

BostonBelfast

BOS Boston Logan Intl - BFS Belfast Intl

BOSBFS

Boston Logan Intl

Wed 9/23

11:00 pm-5:05 pm

2 stops13h 05m

Belfast Intl

Tue 10/6

8:50 am-2:45 pm

3 stops34h 55m

$789

BostonBelfast

BOS Boston Logan Intl - BFS Belfast Intl

BOSBFS

Boston Logan Intl

Wed 11/4

7:50 pm-7:05 pm

2 stops18h 15m

Belfast Intl

Tue 11/10

7:05 am-5:50 pm

2 stops15h 45m

$789

BostonBelfast

BOS Boston Logan Intl - BHD Belfast City

BOSBHD

Boston Logan Intl

Tue 11/24

9:30 pm-4:45 pm

1 stop14h 15m

Belfast City

Mon 11/30

2:40 pm-9:50 pm

1 stop12h 10m

$911
Quickest round-trip

BostonBelfast

BOS Boston Logan Intl - BHD Belfast City

BOSBHD

Boston Logan Intl

Wed 11/25

9:30 pm-2:15 pm

1 stop11h 45m

Belfast City

Tue 12/1

11:25 am-7:40 pm

1 stop13h 15m

$913

Flights are sorted by cheapest round-trip 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 Massachusetts 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, July is the cheapest month to fly from Massachusetts to Belfast. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $0. If you don’t want to visit Belfast in July, then you should wait until February to fly from Massachusetts, when ticket prices are also cheap, with an average price of $0.

Cheap Massachusetts to Belfast flight deals and tips

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

Fastest flight time

10h 35m

Direct flights

None
The fastest flight from Massachusetts to Belfast takes 10h 35m
There are no direct flights from Massachusetts to Belfast. There are no popular flight routes from Massachusetts to Belfast.
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Frequently asked questions about flying from Massachusetts to Belfast

  • When did momondo last update prices for flights from Massachusetts to Belfast?

    Prices for flights from Massachusetts to Belfast are updated daily.

  • How many operators does momondo search for flights from Massachusetts to Belfast?

  • How old do you have to be to fly from Massachusetts to Belfast?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Massachusetts to Belfast.

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

    The required travel and health documents for your Belfast trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Belfast. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Massachusetts to Belfast

Compare and see reviews for airlines that fly from Massachusetts to Belfast with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom $538Free CancellationRating
6.7
8,151 reviews
Search British Airways flights

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Belfast from Massachusetts.

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

Flights from Massachusetts to Belfast with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

momondo helps you find the best flight between Massachusetts and Belfast by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Of course. momondo tracks the price of Massachusetts to Belfast flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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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