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

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

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

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 Intl Airport.

What documentation or ID do you need to fly to Belfast Intl Airport?

The travel and health documents required for your trip to Belfast Intl Airport 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 Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

£218 Cheap Flights from Boston to Belfast Intl Airport in 2026

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Find the cheapest flights from Boston to Belfast

Return

One-way

Cheap return flights

Enter your travel dates to find the best prices.

23:00 - 23:10

BOS

BFS

19h 10m

2 stops

12:20 - 18:50

BFS

BOS

35h 30m

2 stops

£564Multiple Airlines

Mon, 7 Sep - Sun, 13 Sep

20:50 - 22:40

BOS

BFS

20h 50m

2 stops

20:15 - 14:55

BFS

BOS

23h 40m

2 stops

£579Multiple Airlines

Sat, 3 Oct - Sat, 17 Oct

23:00 - 23:10

BOS

BFS

19h 10m

2 stops

09:35 - 20:20

BFS

BOS

39h 45m

3 stops

£588Multiple Airlines

Mon, 7 Sep - Sun, 13 Sep

20:50 - 22:40

BOS

BFS

20h 50m

2 stops

20:15 - 14:45

BFS

BOS

47h 30m

3 stops

£588Multiple Airlines

Sat, 3 Oct - Sat, 17 Oct

20:50 - 20:25

BOS

BFS

18h 35m

2 stops

09:35 - 14:45

BFS

BOS

34h 10m

2 stops

£595Multiple Airlines

Wed, 7 Oct - Wed, 21 Oct

20:50 - 23:00

BOS

BFS

21h 10m

2 stops

15:50 - 18:50

BFS

BOS

32h 00m

2 stops

£596Multiple Airlines

Thu, 24 Sep - Mon, 28 Sep

20:50 - 19:30

BOS

BFS

17h 40m

2 stops

09:35 - 21:05

BFS

BOS

16h 30m

1 stop

£608Multiple Airlines

Sat, 10 Oct - Wed, 21 Oct

20:50 - 18:50

BOS

BFS

17h 00m

2 stops

10:15 - 21:05

BFS

BOS

15h 50m

1 stop

£610Multiple Airlines

Mon, 5 Oct - Thu, 22 Oct

23:00 - 20:15

BOS

BFS

16h 15m

2 stops

10:30 - 20:20

BFS

BOS

14h 50m

1 stop

£616Multiple Airlines

Wed, 7 Oct - Mon, 19 Oct

23:00 - 23:20

BOS

BFS

19h 20m

2 stops

10:30 - 20:20

BFS

BOS

14h 50m

1 stop

£618Multiple Airlines

Mon, 5 Oct - Mon, 19 Oct

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Use the filters below to find and compare flights from Boston to Belfast Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Mon 7/9

23:00-23:10

2 stops19h 10m

Belfast Intl

Sun 13/9

12:20-18:50

2 stops35h 30m

£564

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Sat 3/10

20:50-22:40

2 stops20h 50m

Belfast Intl

Sat 17/10

20:15-14:55

2 stops23h 40m

£579

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Mon 7/9

23:00-23:10

2 stops19h 10m

Belfast Intl

Sun 13/9

09:35-20:20

3 stops39h 45m

£588

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Sat 3/10

20:50-22:40

2 stops20h 50m

Belfast Intl

Sat 17/10

20:15-14:45

3 stops47h 30m

£588

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Wed 7/10

20:50-20:25

2 stops18h 35m

Belfast Intl

Wed 21/10

09:35-14:45

2 stops34h 10m

£594

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Thu 24/9

20:50-23:00

2 stops21h 10m

Belfast Intl

Mon 28/9

15:50-18:50

2 stops32h 00m

£596

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Sat 10/10

20:50-19:30

2 stops17h 40m

Belfast Intl

Wed 21/10

09:35-21:05

1 stop16h 30m

£608

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Mon 5/10

20:50-18:50

2 stops17h 00m

Belfast Intl

Thu 22/10

10:15-21:05

1 stop15h 50m

£610

Fastest return journey

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Wed 7/10

23:00-20:15

2 stops16h 15m

Belfast Intl

Mon 19/10

10:30-20:20

1 stop14h 50m

£616

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

Mon 5/10

23:00-23:20

2 stops19h 20m

Belfast Intl

Mon 19/10

10:30-20:20

1 stop14h 50m

£618

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Boston to Belfast Intl Airport

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 Intl Airport?

The month of February is, on average, the cheapest month to fly to Belfast Intl Airport from Boston, with most prices found around £411. If you’re not able to fly to Belfast Intl Airport in February, then August is your next best option. Flight prices from Boston to Belfast Intl Airport during August average around £431.

When to book flights from Boston to Belfast Intl Airport

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

Estimated return price

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

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

Fastest flight time	11h 40m
Direct flights	None

The fastest flight from Boston to Belfast Intl Airport takes 11h 40m

There are no direct flights from Boston to Belfast Intl Airport. There are no popular flight routes from Boston to Belfast Intl Airport.

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Frequently asked questions about flying from Boston to Belfast Intl Airport

How far is Boston Logan Intl to Belfast Intl by plane?
A flight from Boston Logan Intl to Belfast Intl will travel around 2969.1 mi. A reasonable flight in good conditions will take 11h 40m.
When did momondo last update prices for flights from Boston Logan Intl Airport to Belfast Intl Airport?
Prices for flights from Boston Logan Intl Airport to Belfast Intl Airport refresh daily.
How old do you have to be to fly from Boston Logan Intl Airport to Belfast Intl Airport?
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 Intl Airport.
What documentation or ID do you need to fly to Belfast Intl Airport?
The travel and health documents required for your trip to Belfast Intl Airport 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 Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Ballymena

Newry

Armagh

Cookstown

Portadown

Dungannon

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?

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

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

momondo provides multiple filters to help you find the best flight to Belfast from Boston. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

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