Cheap flights from Belfast Intl Airport to Boston from $418

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 3/9. 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
0 bags

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Find the cheapest flights from Belfast Intl Airport to Boston

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
3:45 pm - 3:35 pm
BFS
-
BOS
27h 50m
3 stops
Multiple Airlines Logo
12:35 pm - 4:10 pm
BOS
-
BFS
23h 35m
2 stops
$671Multiple Airlines
Wed, Mar 18 - Wed, Mar 25
Multiple Airlines Logo
7:20 am - 6:50 pm
BFS
-
BOS
15h 30m
2 stops
Multiple Airlines Logo
12:35 pm - 7:20 pm
BOS
-
BFS
26h 45m
2 stops
$672Multiple Airlines
Wed, Mar 18 - Wed, Mar 25
Multiple Airlines Logo
3:20 pm - 8:55 pm
BFS
-
BOS
34h 35m
2 stops
Multiple Airlines Logo
9:00 pm - 8:20 am
BOS
-
BFS
31h 20m
1 stop
$706Multiple Airlines
Mon, Mar 2 - Mon, Mar 9
Multiple Airlines Logo
3:45 pm - 3:35 pm
BFS
-
BOS
27h 50m
3 stops
Multiple Airlines Logo
6:01 am - 4:10 pm
BOS
-
BFS
30h 09m
3 stops
$715Multiple Airlines
Wed, Mar 18 - Wed, Mar 25
Multiple Airlines Logo
8:50 pm - 8:55 pm
BFS
-
BOS
28h 05m
3 stops
Multiple Airlines Logo
3:35 pm - 10:35 pm
BOS
-
BFS
27h 00m
3 stops
$764Multiple Airlines
Mon, Mar 9 - Mon, Mar 16
Multiple Airlines Logo
7:50 am - 9:55 pm
BFS
-
BOS
18h 05m
2 stops
Multiple Airlines Logo
9:00 pm - 1:25 pm
BOS
-
BFS
12h 25m
1 stop
$903Multiple Airlines
Mon, Mar 9 - Mon, Mar 16
Multiple Airlines Logo
10:25 pm - 9:00 pm
BFS
-
BOS
26h 35m
3 stops
Multiple Airlines Logo
10:35 pm - 10:40 pm
BOS
-
BFS
19h 05m
2 stops
$1,022Multiple Airlines
Sat, Mar 21 - Sat, Mar 28
Multiple Airlines Logo
8:10 am - 6:50 pm
BFS
-
BOS
14h 40m
2 stops
Multiple Airlines Logo
8:50 pm - 9:40 pm
BOS
-
BFS
20h 50m
2 stops
$1,038Multiple Airlines
Sat, Mar 21 - Sat, Mar 28
Multiple Airlines Logo
7:10 am - 2:35 pm
BFS
-
BOS
36h 25m
3 stops
Multiple Airlines Logo
8:00 pm - 10:20 pm
BOS
-
BFS
21h 20m
2 stops
$1,044Multiple Airlines
Sun, Mar 1 - Sat, Mar 7
Multiple Airlines Logo
11:10 pm - 9:00 pm
BFS
-
BOS
25h 50m
3 stops
Multiple Airlines Logo
10:35 pm - 10:40 pm
BOS
-
BFS
19h 05m
2 stops
$1,072Multiple Airlines
Sat, Mar 21 - Sat, Mar 28

momondo Fare Finder

 
Customize 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 832,500 searches. Data last updated February 6, 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

BelfastBoston

BFS - BOS

BFSBOS

Belfast Intl

Wed 3/18

3:45 pm-3:35 pm

3 stops27h 50m

Boston Logan Intl

Wed 3/25

12:35 pm-4:10 pm

2 stops23h 35m

$671

BelfastBoston

BFS - BOS

BFSBOS

Belfast Intl

Wed 3/18

7:20 am-6:50 pm

2 stops15h 30m

Boston Logan Intl

Wed 3/25

12:35 pm-7:20 pm

2 stops26h 45m

$672

BelfastBoston

BFS - BOS

BFSBOS

Belfast Intl

Mon 3/2

3:20 pm-8:55 pm

2 stops34h 35m

Boston Logan Intl

Mon 3/9

9:00 pm-8:20 am

1 stop31h 20m

$706

BelfastBoston

BFS - BOS

BFSBOS

Belfast Intl

Wed 3/18

3:45 pm-3:35 pm

3 stops27h 50m

Boston Logan Intl

Wed 3/25

6:01 am-4:10 pm

3 stops30h 09m

$715

BelfastBoston

BFS - BOS

BFSBOS

Belfast Intl

Mon 3/9

8:50 pm-8:55 pm

3 stops28h 05m

Boston Logan Intl

Mon 3/16

3:35 pm-10:35 pm

3 stops27h 00m

$764

BelfastBoston

BFS - BOS

BFSBOS

Belfast Intl

Mon 3/9

7:50 am-9:55 pm

2 stops18h 05m

Boston Logan Intl

Mon 3/16

9:00 pm-1:25 pm

1 stop12h 25m

$903

BelfastBoston

BFS - BOS

BFSBOS

Belfast Intl

Sat 3/21

10:25 pm-9:00 pm

3 stops26h 35m

Boston Logan Intl

Sat 3/28

10:35 pm-10:40 pm

2 stops19h 05m

$1,022

BelfastBoston

BFS - BOS

BFSBOS

Belfast Intl

Sat 3/21

8:10 am-6:50 pm

2 stops14h 40m

Boston Logan Intl

Sat 3/28

8:50 pm-9:40 pm

2 stops20h 50m

$1,038

BelfastBoston

BFS - BOS

BFSBOS

Belfast Intl

Sun 3/1

7:10 am-2:35 pm

3 stops36h 25m

Boston Logan Intl

Sat 3/7

8:00 pm-10:20 pm

2 stops21h 20m

$1,044

BelfastBoston

BFS - BOS

BFSBOS

Belfast Intl

Sat 3/21

11:10 pm-9:00 pm

3 stops25h 50m

Boston Logan Intl

Sat 3/28

10:35 pm-10:40 pm

2 stops19h 05m

$1,072

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 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 round-trip 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

10h 15m

Direct flights

None
The fastest flight from Belfast Intl Airport to Boston takes 10h 15m
There are no direct flights from Belfast Intl Airport to Boston. There are no popular flight routes from Belfast Intl Airport to Boston.
  • How far is Belfast Intl to Boston Logan Intl by plane?

    The distance between Belfast Intl and Boston Logan Intl is about 2969.1 mi. In terms of flight time, this usually takes a little over 10h 15m.

  • 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 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 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.

  • 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?

    With “Price Forecast”, learn how soon you should book your flight in advance. Down to the day of week and time of day, our information can inform you on the ideal time to book to save on your travel. Our “Price Calendar” shows you at a quick glance when to book your travel for lower rates. By setting “Price Alerts” you can monitor changes in price and target the ideal time to book. Search for your trip destination by budget amount via our “Explore” feature. Whether you’re looking for ideas for your next travel adventure or cost-cutting tips, our “Discover” content is a great place to start.

  • How does momondo find its flight prices?

    We aggregate our prices from over 700+ competitors from airlines to OTAs. We operate in over 30 markets worldwide to show you a wide range of travel options.

Traveling to a place near Boston?

Book flights to Boston if you plan to visit one of these locations
Hampton Beach
Salem
Ogunquit
Old Orchard Beach
Hampton
York Beach
Kennebunkport
Plymouth
Cambridge
South Yarmouth
Narragansett
Gloucester
Falmouth
Nashua
Brockton
Laconia
Warwick
Sturbridge
Chatham
Concord

Why use momondo?

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

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 Boston from Belfast.

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

Yes. All flights to Boston from Belfast on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo helps you find the best flight between Belfast and Boston 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 Belfast to Boston right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Boston, momondo offers a useful price alert feature which will track prices for flights to Boston from Belfast and alert you when they change.

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1 adult
Sun 3/8
Sun 3/15

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