$307+ Cheap flights from Boston (BOS) to Belfast
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/14. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — BHD
Sep 13 — Sep 201
Round-trip
1 adult, Economy
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Find cheap flights from Boston to Belfast with Cheapflights
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Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Cheapest flights from Boston to BelfastExplore the most affordable flight options available from Boston to Belfast. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2026.
Explore the most affordable flight options available from Boston to Belfast. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2026.
This Mytrip deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/1411:00 pm -
2 stops16h 25m
Tue 9/297:00 am -
3 stops42h 20m
Deal found 8/10![Multiple Airlines logo]()
$757
This Trip.com deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/87:50 pm -
2 stops17h 20m
Sat 11/141:10 pm -
2 stops33h 40m
Deal found 8/13![Multiple Airlines logo]()
$759
This Mytrip deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/138:50 pm -
2 stops19h 15m
Tue 10/207:35 am -
3 stops41h 45m
Deal found 8/14![Multiple Airlines logo]()
$760
This Mytrip deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/298:50 pm -
2 stops19h 15m
Mon 3/19:00 pm -
3 stops46h 40m
Deal found 8/11![Multiple Airlines logo]()
$764
This Trip.com deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/87:50 pm -
2 stops18h 10m
Sat 11/147:25 am -
2 stops39h 25m
Deal found 8/13![Multiple Airlines logo]()
$773
This Mytrip deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/148:50 pm -
2 stops14h 25m
Wed 9/303:40 pm -
3 stops28h 05m
Deal found 8/13![Multiple Airlines logo]()
$777
This Kiwi.com deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/27:05 pm -
1 stop14h 10m
Thu 10/156:35 am -
2 stops19h 30m
Deal found 8/11![Multiple Airlines logo]()
$786
This Mytrip deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/298:50 pm -
2 stops16h 00m
Mon 3/17:25 pm -
2 stops29h 55m
Deal found 8/11![Multiple Airlines logo]()
$788
This Mytrip deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/237:50 pm -
3 stops19h 20m
Sun 11/297:00 am -
3 stops36h 40m
Deal found 8/12![Multiple Airlines logo]()
$788
This Mytrip deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/275:40 pm -
2 stops15h 15m
Sun 10/41:25 pm -
2 stops31h 10m
Deal found 8/13![Multiple Airlines logo]()
$796
This Mytrip deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/1410:05 am -
2 stops25h 25m
Wed 9/307:00 am -
3 stops20h 40m
Deal found 8/13![Multiple Airlines logo]()
$822
This Mytrip deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/25:25 pm -
2 stops15h 15m
Thu 10/154:00 pm -
2 stops34h 45m
Deal found 8/11![Multiple Airlines logo]()
$830
Best flights from Boston to BelfastDiscover carefully curated flight deals from Boston to Belfast that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 14, 2026.
Discover carefully curated flight deals from Boston to Belfast that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 14, 2026.
This Trip.com deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/87:50 pm -
2 stops17h 20m
Sat 11/141:10 pm -
2 stops33h 40m
Deal found 8/13![Multiple Airlines logo]()
$759
This British Airways deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/246:45 pm -
1 stop10h 45m
Mon 11/305:45 pm -
1 stop25h 35m
Deal found 8/9![British Airways logo]()
$968
This Delta deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/247:00 pm -
2 stops16h 50m
Mon 11/309:40 am -
2 stops18h 15m
Deal found 8/13![Delta logo]()
$1,000
This American Airlines deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/134:59 pm -
2 stops12h 46m
Tue 10/206:30 am -
1 stop11h 10m
Deal found 8/14![American Airlines logo]()
$1,007
This Mytrip deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/138:50 pm -
2 stops19h 15m
Tue 10/207:35 am -
3 stops41h 45m
Deal found 8/14![Multiple Airlines logo]()
$760
This Mytrip deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/148:50 pm -
2 stops14h 25m
Wed 9/303:40 pm -
3 stops28h 05m
Deal found 8/13![Multiple Airlines logo]()
$777
This Kiwi.com deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/27:05 pm -
1 stop14h 10m
Thu 10/156:35 am -
2 stops19h 30m
Deal found 8/11![Multiple Airlines logo]()
$786
This British Airways deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/259:30 pm -
1 stop11h 45m
Mon 11/307:25 pm -
1 stop29h 15m
Deal found 8/9![British Airways logo]()
$968
This Mytrip deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/275:40 pm -
2 stops15h 15m
Sun 10/41:25 pm -
2 stops31h 10m
Deal found 8/13![Multiple Airlines logo]()
$796
This British Airways deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/156:45 pm -
1 stop10h 35m
Wed 11/1812:25 pm -
1 stop14h 25m
Deal found 8/10![British Airways logo]()
$970
This Mytrip deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/148:50 pm -
2 stops21h 15m
Tue 9/295:55 am -
2 stops17h 55m
Deal found 8/10![Multiple Airlines logo]()
$798
This British Airways deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/256:35 pm -
1 stop11h 05m
Mon 2/15:45 pm -
1 stop30h 55m
Deal found 8/10![British Airways logo]()
$979
This British Airways deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/269:30 pm -
1 stop12h 20m
Mon 2/12:50 pm -
1 stop28h 30m
Deal found 8/13![British Airways logo]()
$980
This Mytrip deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/138:50 pm -
2 stops16h 00m
Tue 10/209:50 am -
2 stops14h 00m
Deal found 8/14![Multiple Airlines logo]()
$857
This British Airways deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/2712:55 pm -
2 stops16h 10m
Sun 1/316:30 am -
1 stop12h 50m
Deal found 8/13![British Airways logo]()
$1,034
This Mytrip deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/134:55 pm -
2 stops15h 10m
Fri 9/256:05 am -
3 stops40h 20m
Deal found 8/12![Multiple Airlines logo]()
$876
Last-minute flights from Boston to BelfastDiscover last-minute flight deals from Boston to Belfast. Data last updated August 14, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to Belfast. Data last updated August 14, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1710:45 pm -
2 stops17h 25m
Sun 8/307:00 am -
3 stops44h 38m
Deal found 8/10![Multiple Airlines logo]()
$964
This Trip.com deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/115:25 pm -
2 stops22h 25m
Fri 9/187:00 am -
2 stops16h 50m
Deal found 8/12![Aer Lingus logo]()
$949
This Mytrip deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1110:40 am -
3 stops29h 20m
Fri 9/187:00 am -
2 stops16h 55m
Deal found 8/13![Multiple Airlines logo]()
$1,009
This Mytrip deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/1411:00 pm -
2 stops16h 25m
Tue 9/297:00 am -
3 stops42h 20m
Deal found 8/10![Multiple Airlines logo]()
$757
This Mytrip deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/148:50 pm -
2 stops14h 25m
Wed 9/303:40 pm -
3 stops28h 05m
Deal found 8/13![Multiple Airlines logo]()
$777
This Mytrip deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/1410:05 am -
2 stops25h 25m
Wed 9/307:00 am -
3 stops20h 40m
Deal found 8/13![Multiple Airlines logo]()
$822
This Mytrip deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/275:40 pm -
2 stops15h 15m
Sun 10/41:25 pm -
2 stops31h 10m
Deal found 8/13![Multiple Airlines logo]()
$796
This Mytrip deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/298:50 pm -
2 stops19h 15m
Mon 3/19:00 pm -
3 stops46h 40m
Deal found 8/11![Multiple Airlines logo]()
$764
This Mytrip deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/298:50 pm -
2 stops16h 00m
Mon 3/17:25 pm -
2 stops29h 55m
Deal found 8/11![Multiple Airlines logo]()
$788
This KLM deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/294:40 pm -
1 stop11h 40m
Mon 3/15:20 pm -
1 stop25h 52m
Deal found 8/11![KLM logo]()
$1,021
One-way flights from Boston to BelfastSearch for one-way flight options from Boston to Belfast. Find affordable one-way fares based on user searches. Data last updated August 14, 2026.
Search for one-way flight options from Boston to Belfast. Find affordable one-way fares based on user searches. Data last updated August 14, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/1410:05 am -
2 stops28h 10m
Deal found 8/13![Multiple Airlines logo]()
$307
This Kiwi.com deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/117:50 pm -
3 stops31h 05m
Deal found 8/13![Multiple Airlines logo]()
$361
This Cheapflightsfares deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/269:30 pm -
1 stop14h 15m
Deal found 8/11![British Airways logo]()
$363
This Kiwi.com deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/105:25 pm -
2 stops21h 05m
Deal found 8/13![Multiple Airlines logo]()
$376
This Kiwi.com deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1010:55 pm -
2 stops29h 55m
Deal found 8/13![Multiple Airlines logo]()
$386
This Kiwi.com deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/115:25 pm -
2 stops13h 30m
Deal found 8/13![Multiple Airlines logo]()
$389
This Mytrip deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/105:25 pm -
2 stops22h 25m
Deal found 8/11![Aer Lingus logo]()
$407
This oojo deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/107:25 am -
1 stop20h 20m
Deal found 8/13![British Airways logo]()
$534
This British Airways deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/117:25 am -
1 stop20h 25m
Deal found 8/13![British Airways logo]()
$539
Find flight deals from Boston to Belfast
Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to Belfast (BF1). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated August 14, 2026.
Round-trip from | $757 (Mytrip) |
|---|---|
One-way from | $307 (Kiwi.com) |
Popular in | November |
Cheapest in | March |
Average price | $1,244 |
Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated August 14, 2026.
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
Cheapest round-trip
BostonBelfast
BOS Boston Logan Intl - BFS Belfast Intl
BOSBFS
Boston Logan Intl
Sun 11/8
7:50 pm-6:10 pm
2 stops17h 20m
Belfast Intl
Sat 11/14
1:10 pm-5:50 pm
2 stops33h 40m
$759
BostonBelfast
BOS Boston Logan Intl - BFS Belfast Intl
BOSBFS
Boston Logan Intl
Tue 10/13
8:50 pm-9:05 pm
2 stops19h 15m
Belfast Intl
Tue 10/20
7:35 am-8:20 pm
3 stops41h 45m
$760
BostonBelfast
BOS Boston Logan Intl - BFS Belfast Intl
BOSBFS
Boston Logan Intl
Mon 9/14
8:50 pm-4:15 pm
2 stops14h 25m
Belfast Intl
Wed 9/30
3:40 pm-2:45 pm
3 stops28h 05m
$777
BostonBelfast
BOS Boston Logan Intl - BFS Belfast Intl
BOSBFS
Boston Logan Intl
Fri 10/2
7:05 pm-2:15 pm
1 stop14h 10m
Belfast Intl
Thu 10/15
6:35 am-9:05 pm
2 stops19h 30m
$786
BostonBelfast
BOS Boston Logan Intl - BFS Belfast Intl
BOSBFS
Boston Logan Intl
Sun 9/27
5:40 pm-1:55 pm
2 stops15h 15m
Belfast Intl
Sun 10/4
1:25 pm-3:35 pm
2 stops31h 10m
$796
BostonBelfast
BOS Boston Logan Intl - BFS Belfast Intl
BOSBFS
Boston Logan Intl
Mon 9/14
8:50 pm-11:05 pm
2 stops21h 15m
Belfast Intl
Tue 9/29
5:55 am-6:50 pm
2 stops17h 55m
$798
BostonBelfast
BOS Boston Logan Intl - BHD Belfast City
BOSBHD
Boston Logan Intl
Tue 10/13
8:50 pm-5:50 pm
2 stops16h 00m
Belfast City
Tue 10/20
9:50 am-6:50 pm
2 stops14h 00m
$857
BostonBelfast
BOS Boston Logan Intl - BFS Belfast Intl
BOSBFS
Boston Logan Intl
Sun 9/13
4:55 pm-1:05 pm
2 stops15h 10m
Belfast Intl
Fri 9/25
6:05 am-5:25 pm
3 stops40h 20m
$876
BostonBelfast
BOS Boston Logan Intl - BHD Belfast City
BOSBHD
Boston Logan Intl
Tue 11/24
6:45 pm-10:30 am
1 stop10h 45m
Belfast City
Mon 11/30
5:45 pm-2:20 pm
1 stop25h 35m
$968
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
Mon 11/30
7:25 pm-7:40 pm
1 stop29h 15m
$968
Showing 1-10 of 22 resultsSorted by cheapest first
Best time to book a flight from Boston to Belfast
Have a flexible travel schedule? Discover the best time to fly to Belfast from Boston with our price prediction graph.
BOS-BF1
BOS-BFS
BOS-BHD
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Boston to Belfast
BOS-BF1
BOS-BFS
BOS-BHD
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Reviews of airlines servicing Belfast
Get insights into the airlines that provide service to Belfast. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Belfast. Reviews last updated August 14, 2026.
See what other customers who have flown with British Airways from Boston to Belfast have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
7.7
Food
6.4
Entertainment
6.5
Comfort
6.8
Boarding
7.0
Overall
6.7
Reviews
1 / 20
10.0
ExcellentAnonymous,Jun 2026
IAH - LHR
Crew
7.7
Food
6.4
Entertainment
6.5
Comfort
6.8
Boarding
7.0
Overall
6.7
Reviews
1 / 20
10.0
ExcellentAnonymous,Jun 2026
IAH - LHR
Related info for your journey
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Top airline flying from Boston to Belfast
Discover the top airline that operate flights from Boston to Belfast. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 14, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$538 | Average$683 | FlexibilityNo cancel fee | On-time70% |