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Cheap flights from Belfast Intl Airport to Boston from £274

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Belfast Intl Airport to Boston departing on 23/9. 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

Find the cheapest flights from Belfast Intl Airport to Boston

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
20:10 - 20:55BFS  Belfast Intl-BOS Boston Logan Intl
29h 45m3 stops London Gatwick Ottawa Toronto Island
Multiple Airlines Logo
20:50 - 20:25BOS  Boston Logan Intl-BFS Belfast Intl
18h 35m2 stops Reykjavik Keflavik Intl London Gatwick
£572Multiple Airlines
Thu, 10 Sep - Mon, 14 Sep
Multiple Airlines Logo
06:10 - 21:45BFS  Belfast Intl-BOS Boston Logan Intl
20h 35m2 stops London Gatwick Reykjavik Keflavik Intl
Multiple Airlines Logo
20:50 - 21:05BOS  Boston Logan Intl-BFS Belfast Intl
19h 15m2 stops Reykjavik Keflavik Intl London Gatwick
£582Multiple Airlines
Wed, 2 Sep - Tue, 15 Sep
Multiple Airlines Logo
06:10 - 18:35BFS  Belfast Intl-BOS Boston Logan Intl
17h 25m2 stops London Gatwick Toronto Pearson Intl
Multiple Airlines Logo
10:05 - 19:40BOS  Boston Logan Intl-BFS Belfast Intl
28h 35m2 stops Toronto Pearson Intl Glasgow Intl
£585Multiple Airlines
Wed, 2 Sep - Tue, 15 Sep
Multiple Airlines Logo
22:45 - 18:50BFS  Belfast Intl-BOS Boston Logan Intl
25h 05m2 stops Manchester Dublin
Multiple Airlines Logo
17:25 - 15:35BOS  Boston Logan Intl-BFS Belfast Intl
17h 10m2 stops Dublin Manchester
£588Multiple Airlines
Thu, 10 Sep - Mon, 14 Sep
Multiple Airlines Logo
06:10 - 21:45BFS  Belfast Intl-BOS Boston Logan Intl
20h 35m2 stops London Gatwick Reykjavik Keflavik Intl
Multiple Airlines Logo
23:00 - 19:40BOS  Boston Logan Intl-BFS Belfast Intl
15h 40m2 stops Reykjavik Keflavik Intl London Gatwick
£590Multiple Airlines
Wed, 2 Sep - Wed, 9 Sep
Multiple Airlines Logo
06:15 - 18:50BFS  Belfast Intl-BOS Boston Logan Intl
17h 35m2 stops London Gatwick Reykjavik Keflavik Intl
Multiple Airlines Logo
23:00 - 21:05BOS  Boston Logan Intl-BFS Belfast Intl
17h 05m2 stops Reykjavik Keflavik Intl London Gatwick
£592Multiple Airlines
Tue, 1 Sep - Tue, 8 Sep
Multiple Airlines Logo
06:10 - 19:35BFS  Belfast Intl-BOS Boston Logan Intl
18h 25m2 stops London Gatwick Paris Charles de Gaulle
Multiple Airlines Logo
17:10 - 20:25BOS  Boston Logan Intl-BFS Belfast Intl
22h 15m2 stops Paris Charles de Gaulle London Gatwick
£601Multiple Airlines
Mon, 14 Sep - Mon, 21 Sep
Multiple Airlines Logo
06:10 - 14:02BFS  Belfast Intl-BOS Boston Logan Intl
36h 52m3 stops London Gatwick Montreal Pierre Elliott Trudeau Intl Toronto Island
Multiple Airlines Logo
20:50 - 23:10BOS  Boston Logan Intl-BFS Belfast Intl
21h 20m3 stops Reykjavik Keflavik Intl Dublin Newcastle upon Tyne
£603Multiple Airlines
Mon, 14 Sep - Mon, 21 Sep
Multiple Airlines Logo
08:20 - 14:50BFS  Belfast Intl-BOS Boston Logan Intl
35h 30m3 stops Liverpool J. Lennon Madrid Barajas San Salvador El Salvador Intl
Multiple Airlines Logo
10:05 - 16:20BOS  Boston Logan Intl-BFS Belfast Intl
25h 15m2 stops Toronto Pearson Intl Glasgow Intl
£604Multiple Airlines
Wed, 2 Sep - Tue, 15 Sep
Multiple Airlines Logo
21:10 - 20:55BFS  Belfast Intl-BOS Boston Logan Intl
28h 45m3 stops London Gatwick Ottawa Toronto Island
Multiple Airlines Logo
20:50 - 23:20BOS  Boston Logan Intl-BFS Belfast Intl
21h 30m3 stops Reykjavik Keflavik Intl Dublin London Stansted
£604Multiple Airlines
Thu, 10 Sep - Mon, 14 Sep

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Customise your flight search to find flights from Belfast Intl Airport to Boston 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 15 August 2026.
Use the filters below to find and compare flights from Belfast Intl Airport to Boston that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BelfastBoston

BFS Belfast Intl - BOS Boston Logan Intl

BFSBOS

Belfast Intl

Thu 10/9

20:10-20:55

3 stops29h 45m

Boston Logan Intl

Mon 14/9

20:50-20:25

2 stops18h 35m

£572

BelfastBoston

BFS Belfast Intl - BOS Boston Logan Intl

BFSBOS

Belfast Intl

Wed 2/9

06:10-21:45

2 stops20h 35m

Boston Logan Intl

Tue 15/9

20:50-21:05

2 stops19h 15m

£582

BelfastBoston

BFS Belfast Intl - BOS Boston Logan Intl

BFSBOS

Belfast Intl

Wed 2/9

06:10-18:35

2 stops17h 25m

Boston Logan Intl

Tue 15/9

10:05-19:40

2 stops28h 35m

£585

BelfastBoston

BFS Belfast Intl - BOS Boston Logan Intl

BFSBOS

Belfast Intl

Thu 10/9

22:45-18:50

2 stops25h 05m

Boston Logan Intl

Mon 14/9

17:25-15:35

2 stops17h 10m

£588

BelfastBoston

BFS Belfast Intl - BOS Boston Logan Intl

BFSBOS

Belfast Intl

Wed 2/9

06:10-21:45

2 stops20h 35m

Boston Logan Intl

Wed 9/9

23:00-19:40

2 stops15h 40m

£590
Fastest return journey

BelfastBoston

BFS Belfast Intl - BOS Boston Logan Intl

BFSBOS

Belfast Intl

Tue 1/9

06:15-18:50

2 stops17h 35m

Boston Logan Intl

Tue 8/9

23:00-21:05

2 stops17h 05m

£592

BelfastBoston

BFS Belfast Intl - BOS Boston Logan Intl

BFSBOS

Belfast Intl

Mon 14/9

06:10-19:35

2 stops18h 25m

Boston Logan Intl

Mon 21/9

17:10-20:25

2 stops22h 15m

£601

BelfastBoston

BFS Belfast Intl - BOS Boston Logan Intl

BFSBOS

Belfast Intl

Mon 14/9

06:10-14:02

3 stops36h 52m

Boston Logan Intl

Mon 21/9

20:50-23:10

3 stops21h 20m

£603

BelfastBoston

BFS Belfast Intl - BOS Boston Logan Intl

BFSBOS

Belfast Intl

Wed 2/9

08:20-14:50

3 stops35h 30m

Boston Logan Intl

Tue 15/9

10:05-16:20

2 stops25h 15m

£604

BelfastBoston

BFS Belfast Intl - BOS Boston Logan Intl

BFSBOS

Belfast Intl

Thu 10/9

21:10-20:55

3 stops28h 45m

Boston Logan Intl

Mon 14/9

20:50-23:20

3 stops21h 30m

£604

Flights are sorted by cheapest return flights first.

Showing 1-10 of 16 resultsSorted by cheapest first
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When to book flights from Belfast Intl Airport to Boston

Are you open to changing your travel dates? Check out the ideal times to fly from Belfast Intl Airport to Boston according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Belfast Intl Airport to Boston (BFS to BOS) flight deals and tips

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

Fastest flight time

14h 20m

Direct flights

None
The fastest flight from Belfast Intl Airport to Boston takes 14h 20m
There are no direct flights from Belfast Intl Airport to Boston. There are no popular flight routes from Belfast Intl Airport to Boston.
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Frequently asked questions about flying from Belfast Intl Airport to Boston

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

    A flight from Belfast Intl to Boston Logan Intl will travel around 2969.1 mi. Typically, this will take 14h 20m by plane in normal conditions.

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

    Prices for flights from Belfast Intl Airport to Boston Logan Intl Airport are updated daily.

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Belfast Intl Airport to Boston Logan Intl Airport.

  • What documentation or ID do you need to fly to Boston Logan Intl Airport?

    The required travel and health documents for your Boston Logan Intl Airport 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 Boston Logan Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Frequently asked questions about flying from Belfast Intl Airport to Boston

  • How do I get Price Alerts for flights from Belfast Intl Airport to Boston?

    You can take advantage of momondo’s Price Alerts by first searching for your flights to Belfast Intl Airport from Boston. Flight offers will be shown to you in real-time. From there you can create a Price Alert by using our on-site widget.

  • How can I save money on flights from Belfast Intl Airport to Boston with momondo?

    Leverage our AI within our “Price Forecast” tool, which predicts if it’s better to book now or wait until prices decrease. You can strategically pick the best days to fly and save money on your trip by using our “Price Calendar” tool. “Explore” shows an overview of how much it costs to fly to anywhere from a selected city or airport. Our “Discover” content is a great option for travel inspiration and money-saving tips, while “Price Alerts” will update you when prices change, so you can book when fares are right.

  • How does momondo find its flight prices?

    We compare prices from 700+ competitors to help you find the price that works best for you. momondo operates in over 30 international markets, bringing you access to a wide range of fares and deals. Search for your travel using momondo for a diverse range of options from airlines and OTAs.

Travelling to a place near Boston?

Book flights to Boston if you plan to visit one of these locations
Salem
Cambridge
Waltham
Braintree
Dedham
Chelsea
Brookline
Plymouth
Foxborough
Weymouth
Falmouth
Burlington
Marlborough
Randolph
York Beach
Needham
Quincy
Framingham
Amherst
Wells

Why use momondo?

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

It is quick and easy to find Belfast to Boston flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Boston that suits you.

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

All flight searches from Belfast to Boston on momondo can be filtered to show those which offer flexible booking policies.

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

Once all potential Belfast to Boston 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 Belfast to Boston right now. Can momondo alert me if prices change?

Price alerts on flights to Boston from Belfast 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.

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