HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Belfast

$431+ 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 5/31. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — BHD
ene. 26 — feb. 21
dom. 1/26
dom. 2/2
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Boston to Belfast with Cheapflights

1. Tell us where you want to go
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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap 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 enero 21, 2025.

Round-trip from

$547
(Mytrip)

One-way from

$431
(Gurufare)

Popular in

July

Cheapest in

November
From Boston Logan Intl to Belfast
Search Deals
One-way flight from Boston Logan Intl to Belfast
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($160 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($22 potential savings vs. average RT price).
Search Deals

Find flight deals from Boston to Belfast

Cheapest flights from Boston to Belfast
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 enero 21, 2025.

This Mytrip deal was found by Cheapflights users on 1/20. 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.
jue. 2/276:20 pmBOS - BFS
2 stops20h 45mMultiple Airlines
lun. 3/35:45 amBFS - BOS
2 stops16h 15mMultiple Airlines
Deal found 1/20$547
This Cheapflightsfares deal was found by Cheapflights users on 1/19. 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.
mar. 10/147:40 pmBOS - BHD
1 stop12h 20mBritish Airways
mié. 10/221:50 pmBHD - BOS
1 stop13h 45mBritish Airways
Deal found 1/19$596
This American Airlines deal was found by Cheapflights users on 1/19. 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.
mar. 10/145:04 pmBOS - BHD
2 stops12h 31mAmerican Airlines
mié. 10/2211:30 amBHD - BOS
1 stop13h 40mAmerican Airlines
Deal found 1/19$623
This Finnair deal was found by Cheapflights users on 1/20. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 3/139:15 pmBOS - BHD
1 stop19h 05mFinnair
jue. 3/206:35 amBHD - BOS
1 stop20h 20mFinnair
Deal found 1/20$630
This Mytrip deal was found by Cheapflights users on 1/20. 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.
jue. 3/1312:35 pmBOS - BHD
2 stops27h 55mMultiple Airlines
jue. 3/207:30 amBHD - BOS
2 stops15h 15mMultiple Airlines
Deal found 1/20$638
This FlightHub deal was found by Cheapflights users on 1/20. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 4/89:25 pmBOS - BHD
2 stops15h 05mAer Lingus
sáb. 4/197:30 pmBHD - BOS
2 stops24h 10mAer Lingus
Deal found 1/20$893
This Delta deal was found by Cheapflights users on 1/20. 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.
jue. 4/105:07 pmBOS - BHD
2 stops18h 48mDelta
lun. 4/216:30 amBHD - BOS
1 stop15h 00mDelta
Deal found 1/20$1,077
This KLM deal was found by Cheapflights users on 1/20. 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.
mié. 4/98:25 pmBOS - BHD
1 stop15h 30mKLM
sáb. 4/195:25 pmBHD - BOS
1 stop30h 05mKLM
Deal found 1/20$1,182

Find flights from Boston to Belfast within your budget

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 enero 21, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

BostonBelfast

BOS - BFS

BOSBFS

Boston Logan Intl

jue. 2/27

6:20 pm-8:05 pm

2 stops20h 45m

Belfast Intl

lun. 3/3

5:45 am-5:00 pm

2 stops16h 15m

$547

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

jue. 3/13

9:15 pm-2:00 pm

1 stop12h 45m

Belfast City

mar. 3/18

8:40 am-10:55 pm

1 stop18h 15m

$608

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

jue. 3/13

9:15 pm-8:20 pm

1 stop19h 05m

Belfast City

jue. 3/20

6:35 am-10:55 pm

1 stop20h 20m

$630

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

jue. 3/13

12:35 pm-8:30 pm

2 stops27h 55m

Belfast City

jue. 3/20

7:30 am-6:45 pm

2 stops15h 15m

$638

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

vie. 3/14

1:10 pm-7:15 pm

2 stops26h 05m

Belfast City

mié. 3/19

9:10 am-10:55 pm

1 stop17h 45m

$645

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

mié. 4/9

7:23 pm-1:30 pm

2 stops13h 07m

Belfast City

dom. 4/20

6:50 am-12:25 pm

1 stop10h 35m

$673

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

mar. 4/8

9:25 pm-5:30 pm

2 stops15h 05m

Belfast City

sáb. 4/19

7:30 pm-2:40 pm

2 stops24h 10m

$893

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

jue. 4/10

5:07 pm-4:55 pm

2 stops18h 48m

Belfast City

lun. 4/21

6:30 am-4:30 pm

1 stop15h 00m

$1,077

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

mié. 4/9

8:25 pm-4:55 pm

1 stop15h 30m

Belfast City

sáb. 4/19

5:25 pm-6:30 pm

1 stop30h 05m

$1,182

BostonBelfast

BOS - BHD

BOSBHD

Boston Logan Intl

sáb. 5/31

6:35 pm-12:15 pm

2 stops12h 40m

$431

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/21

Showing 1-10 of 11 results
1
2

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.
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.

Travel insights for flights from Boston to Belfast

Get recent, data-driven insights about flights from Boston to Belfast including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Boston to Belfast?

Currently, February is the cheapest month in which you can book a flight from Boston to Belfast (average of $657). Flying from Boston to Belfast in June is currently the most expensive (average of $1,189). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from BOS to BFS?

Find hourly flight availability from Boston to Belfast. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated enero 21, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 13% on flights from Boston to Belfast by exploring options for tickets in the morning.

Rainfall in Belfast by month

Plan your trip to Belfast by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Belfast ranges from 2.0 - 3.5 inches per month. October is typically the wettest month, when rainfall can reach 3.5 in. April is typically the driest time to visit Belfast when rainfall is around 2.0 in.

Temperature in Belfast by month

Plan your trip to Belfast by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Belfast, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 60.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 41.0 F).

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 enero 21, 2025.
Finnair
7.6
Good
1,286 reviews

Comfort

7.5

Boarding

7.7

Crew

8.1

Entertainment

6.9

Overall

7.6

Food

6.7

Reviews

1 / 10

Finnair, a large European airline, have a very poor boarding practice whereby they collect every passenger waiting at the gate into an even smaller closed in area after checking passports (again) and boarding cards - then simply open the boarding causing a crowd crush as ALL passengers attempt to board all at once. Surely a more controllable method these days is to board via seat row numbers?

Finnair
7.6
Good
1,286 reviews
Finnair
7.6
Good
1,286 reviews

Comfort

7.5

Boarding

7.7

Crew

8.1

Entertainment

6.9

Overall

7.6

Food

6.7

Reviews

1 / 10

Finnair, a large European airline, have a very poor boarding practice whereby they collect every passenger waiting at the gate into an even smaller closed in area after checking passports (again) and boarding cards - then simply open the boarding causing a crowd crush as ALL passengers attempt to board all at once. Surely a more controllable method these days is to board via seat row numbers?

Aer Lingus
7.1
Good
1,082 reviews
Finnair
7.6
Good
1,286 reviews

Comfort

7.5

Boarding

7.7

Crew

8.1

Entertainment

6.9

Overall

7.6

Food

6.7

Reviews

1 / 10

Finnair, a large European airline, have a very poor boarding practice whereby they collect every passenger waiting at the gate into an even smaller closed in area after checking passports (again) and boarding cards - then simply open the boarding causing a crowd crush as ALL passengers attempt to board all at once. Surely a more controllable method these days is to board via seat row numbers?

British Airways
6.6
Okay
6,834 reviews
Finnair
7.6
Good
1,286 reviews

Comfort

7.5

Boarding

7.7

Crew

8.1

Entertainment

6.9

Overall

7.6

Food

6.7

Reviews

1 / 10

Finnair, a large European airline, have a very poor boarding practice whereby they collect every passenger waiting at the gate into an even smaller closed in area after checking passports (again) and boarding cards - then simply open the boarding causing a crowd crush as ALL passengers attempt to board all at once. Surely a more controllable method these days is to board via seat row numbers?

Related info for your journey

Find useful and relevant information for your journey from Boston to Belfast. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Boston to Belfast?

    If you book a flight to Belfast from Boston, you will be flying from Logan Intl, which is the city’s only airport. Boston Logan Intl (BOS) is located 2.6 mi from the center of Boston. There are 0 flights from Logan Intl to Belfast per day from 2 different airlines.

  • What are the cheapest airlines flying from Boston to Belfast round-trip?

    According to our current data, British Airways ($560), Finnair ($630), and Aer Lingus ($1,157) offers the cheapest pricing from Boston to Belfast. You may be able to fly from Boston to Belfast for 25% less than the average price by searching for these airlines.

  • Can I find deals for flights from Boston to Belfast that include hotel bookings?

    Yes. In addition to deals on Boston to Belfast flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Boston to Belfast?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boston to Belfast.

  • Can I find deals for business class flights from Boston to Belfast?

    Yes. Cheapflights offers flight deals from Boston to Belfast by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Boston to Belfast?

    Currently, February is the cheapest month in which you can book a flight from Boston to Belfast (average of $657). Flying from Boston to Belfast in June is currently the most expensive (average of $1,189). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Boston to Belfast

See prices for flight routes from nearby airports that may be better suited for you.
Boston to Belfast Intl flights
Boston to Belfast City flights
Hartford to Belfast City flights
Worcester to Belfast City flights

Top 2 airlines flying from Boston to Belfast

Discover the top 2 airlines 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 enero 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$584Average$649FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$596Average$685FlexibilityNo cancel feeOn-time70%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.