HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news

Cheap flights from Boston (BOS) to Belfast Intl (BFS) from $299

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 7/24. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
BOS — BFS
May 21 — May 281
From?
To?
Tue 5/21
Tue 5/28
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Cheap flight deals from Boston to Belfast Intl

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to Belfast Intl (BFS). 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 May 16, 2024.

Popular in

July

Cheapest in

March

Round-trip from

$640

One-way from

$299
High demand for flights, 31% potential price rise
Search Deals
Best time to find cheap flights, 31% potential price drop
Search Deals
From Boston Logan Intl to Belfast Intl
Search Deals
One-way flight from Boston Logan Intl to Belfast Intl
Search Deals

What is the cheapest day to fly round-trip from Boston to Belfast Intl Airport?

Users have found that leaving on a Sunday can be a cost-effective option. It’s possible to save up to 33% on your flight compared to booking on days when demand is much higher.

How far in advance should I book a flight from Boston to Belfast Intl Airport?

Travelers have found it’s best to book a flight 22 days in advance to save up to 33% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 22 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Boston to Belfast Intl Airport 1-2 weeks in advance for as low as $655, or $782 for flights within the next 24 hours.

What is the cheapest month to fly from Boston to Belfast Intl Airport?

The best pricing can be found in the month of March. Prices to Belfast Intl Airport from Boston average $756. You can even find prices in March for less than $756, as users have found deals to Belfast Intl Airport from as low as $517. The month of July appears to be one of the more expensive times to travel to Belfast Intl Airport from Boston. Flying in the targeted month can save you up to 44%.

When is the cheapest time to fly from Boston to Belfast Intl Airport (BOS - BFS)?

Unlike in the morning, when flights are generally more expensive, you can save up to 45% on flights from Boston to Belfast Intl Airport by exploring options for tickets at noon.

Cheap Boston to Belfast Intl flights in May & June 2024

Find cheap flight options from Boston to Belfast Intl specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,637,452 searches. Prices were last updated on May 16, 2024.
Fri 6/1410:20 amBOS - BFS
2 stops23h 50mMultiple Airlines
Wed 6/196:05 amBFS - BOS
2 stops16h 55mMultiple Airlines
Deal found 5/16$759
Sun 5/266:00 amBOS - BFS
3 stops34h 00mMultiple Airlines
Tue 5/288:55 pmBFS - BOS
2 stops26h 05mMultiple Airlines
Deal found 5/15$884
Fri 6/1410:20 amBOS - BFS
2 stops23h 50mMultiple Airlines
Wed 6/198:20 amBFS - BOS
3 stops15h 30mMultiple Airlines
Deal found 5/16$895
Sun 5/2610:20 amBOS - BFS
2 stops19h 00mMultiple Airlines
Tue 5/288:55 pmBFS - BOS
2 stops26h 05mMultiple Airlines
Deal found 5/15$917
Fri 6/1410:41 amBOS - BFS
2 stops23h 29mMultiple Airlines
Wed 6/199:45 amBFS - BOS
1 stop16h 25mMultiple Airlines
Deal found 5/16$936
Tue 6/2512:35 pmBOS - BFS
2 stops28h 30mMultiple Airlines
Tue 7/26:15 amBFS - BOS
2 stops20h 45mMultiple Airlines
Deal found 5/14$944
Sat 5/251:20 pmBOS - BFS
3 stops14h 50mMultiple Airlines
Tue 5/288:55 pmBFS - BOS
2 stops26h 05mMultiple Airlines
Deal found 5/15$947
Sat 5/256:15 amBOS - BFS
2 stops21h 55mMultiple Airlines
Tue 5/288:55 pmBFS - BOS
2 stops26h 05mMultiple Airlines
Deal found 5/15$969
Sun 5/266:00 amBOS - BFS
3 stops34h 00mMultiple Airlines
Tue 5/288:55 pmBFS - BOS
3 stops30h 05mMultiple Airlines
Deal found 5/15$1,007

Boston to Belfast Intl 2024 flight deals

Discover exclusive flight deals for travel between Boston and Belfast Intl in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
Thu 10/310:40 amBOS - BFS
2 stops17h 55mMultiple Airlines
Mon 10/710:15 amBFS - BOS
1 stop15h 55mMultiple Airlines
Deal found 5/16$670
Wed 11/206:20 pmBOS - BFS
2 stops22h 10mMultiple Airlines
Sun 11/249:20 pmBFS - BOS
2 stops24h 40mMultiple Airlines
Deal found 5/15$678
Fri 6/1410:20 amBOS - BFS
2 stops23h 50mMultiple Airlines
Wed 6/196:05 amBFS - BOS
2 stops16h 55mMultiple Airlines
Deal found 5/16$759
Mon 7/157:15 pmBOS - BFS
2 stops22h 45mMultiple Airlines
Mon 7/226:50 amBFS - BOS
2 stops16h 10mMultiple Airlines
Deal found 5/16$776
Wed 7/107:15 pmBOS - BFS
2 stops20h 15mMultiple Airlines
Tue 7/166:05 amBFS - BOS
2 stops16h 55mMultiple Airlines
Deal found 5/16$805
Wed 11/206:20 pmBOS - BFS
2 stops22h 10mMultiple Airlines
Sun 11/249:20 pmBFS - BOS
3 stops27h 45mMultiple Airlines
Deal found 5/15$807
Mon 7/156:05 amBOS - BFS
3 stops26h 10mMultiple Airlines
Mon 7/226:25 amBFS - BOS
2 stops16h 25mMultiple Airlines
Deal found 5/16$877
Sun 5/266:00 amBOS - BFS
3 stops34h 00mMultiple Airlines
Tue 5/288:55 pmBFS - BOS
2 stops26h 05mMultiple Airlines
Deal found 5/15$884
Wed 7/108:50 pmBOS - BFS
2 stops20h 10mMultiple Airlines
Mon 7/226:15 amBFS - BOS
2 stops17h 35mMultiple Airlines
Deal found 5/16$892

Boston to Belfast Intl flights leaving soon

Find last-minute flight options from Boston to Belfast Intl for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
Sun 5/266:00 amBOS - BFS
3 stops34h 00mMultiple Airlines
Tue 5/288:55 pmBFS - BOS
2 stops26h 05mMultiple Airlines
Deal found 5/15$884
Sun 5/2610:20 amBOS - BFS
2 stops19h 00mMultiple Airlines
Tue 5/288:55 pmBFS - BOS
2 stops26h 05mMultiple Airlines
Deal found 5/15$917
Sat 5/251:20 pmBOS - BFS
3 stops14h 50mMultiple Airlines
Tue 5/288:55 pmBFS - BOS
2 stops26h 05mMultiple Airlines
Deal found 5/15$947
Sat 5/256:15 amBOS - BFS
2 stops21h 55mMultiple Airlines
Tue 5/288:55 pmBFS - BOS
2 stops26h 05mMultiple Airlines
Deal found 5/15$969
Sun 5/266:00 amBOS - BFS
3 stops34h 00mMultiple Airlines
Tue 5/288:55 pmBFS - BOS
3 stops30h 05mMultiple Airlines
Deal found 5/15$1,007
Sat 5/251:20 pmBOS - BFS
3 stops14h 50mMultiple Airlines
Tue 5/288:55 pmBFS - BOS
3 stops30h 05mMultiple Airlines
Deal found 5/15$1,012
Sun 5/267:20 amBOS - BFS
1 stop19h 25mMultiple Airlines
Tue 5/288:55 pmBFS - BOS
2 stops46h 27mMultiple Airlines
Deal found 5/15$1,061
Sat 5/253:36 pmBOS - BFS
2 stops26h 39mMultiple Airlines
Tue 5/2812:35 pmBFS - BOS
1 stop14h 50mMultiple Airlines
Deal found 5/15$1,944

One-way flights to Belfast Intl from Boston

Search for one-way flight options from Boston to Belfast Intl. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
Wed 7/249:26 amBOS - BFS
2 stops31h 34mMultiple Airlines
Deal found 5/16$299
Sat 7/207:15 pmBOS - BFS
2 stops36h 50mMultiple Airlines
Deal found 5/16$305
Thu 7/257:15 pmBOS - BFS
3 stops23h 00mMultiple Airlines
Deal found 5/16$319
Sat 7/67:15 pmBOS - BFS
2 stops21h 10mMultiple Airlines
Deal found 5/15$320
Wed 7/247:15 pmBOS - BFS
3 stops19h 50mMultiple Airlines
Deal found 5/16$328
Thu 7/257:15 pmBOS - BFS
2 stops22h 45mMultiple Airlines
Deal found 5/16$336
Wed 7/177:15 pmBOS - BFS
2 stops19h 05mMultiple Airlines
Deal found 5/15$358
Wed 7/177:15 pmBOS - BFS
2 stops19h 05mMultiple Airlines
Deal found 5/16$363
Sat 7/208:47 pmBOS - BFS
3 stops42h 33mMultiple Airlines
Deal found 5/16$367

Find flights from Boston to Belfast Intl within your budget

Customize your flight search to find flights from Boston to Belfast Intl 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 2,637,452 searches. Data last updated May 16, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$884 - $1,593

Route

Depart

Return

Price

Boston Logan IntlBelfast Intl

BOS - BFS

BOSBFS

Boston Logan Intl

Sun 5/26

3 stops34h 00m

Belfast Intl

Tue 5/28

2 stops26h 05m

$884

Boston Logan IntlBelfast Intl

BOS - BFS

BOSBFS

Boston Logan Intl

Sun 5/26

2 stops19h 00m

Belfast Intl

Tue 5/28

2 stops26h 05m

$917

Boston Logan IntlBelfast Intl

BOS - BFS

BOSBFS

Boston Logan Intl

Tue 6/25

2 stops28h 30m

Belfast Intl

Tue 7/2

2 stops20h 45m

$944

Boston Logan IntlBelfast Intl

BOS - BFS

BOSBFS

Boston Logan Intl

Sun 5/26

3 stops34h 00m

Belfast Intl

Tue 5/28

3 stops30h 05m

$1,007

Boston Logan IntlBelfast Intl

BOS - BFS

BOSBFS

Boston Logan Intl

Sun 5/26

1 stop19h 25m

Belfast Intl

Tue 5/28

2 stops46h 27m

$1,061

Boston Logan IntlBelfast Intl

BOS - BFS

BOSBFS

Boston Logan Intl

Tue 6/25

2 stops26h 44m

Belfast Intl

Tue 7/2

1 stop15h 45m

$1,593

Flights are sorted by cheapest first

Deals found on 5/15

When is the best time to book a flight from Boston to Belfast Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from Boston to Belfast Intl. Price data was last updated on May 10, 2024.
The price you pay for your flight from Boston to Belfast Intl Airport may vary depending on when you book. For the best chance of a lower fare, look to book 21 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
Search Deals

When is the cheapest time to fly from Boston to Belfast Intl Airport?

Use this chart to determine the cheapest time to fly round-trip from Boston to Belfast Intl. Price data was last updated on May 12, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their Boston to Belfast Intl Airport flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Average price of flights to Belfast Intl by month

Plan your trip from Boston to Belfast Intl by taking into account the cheapest months to travel. The average price of a one-way flight from Boston to Belfast Intl is currently $333 while a round-trip flight costs $1,068. Price data was last updated on May 12, 2024.

Currently, February is the cheapest month in which you can book a flight from Boston to Belfast Intl Airport (average of $641). Flying from Boston to Belfast Intl Airport in June is currently the most expensive (average of $1,181). 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.

January

$685

February

$641

March

$690

April

$673

May

$788

June

$1,181

July

$991

August

$863

September

$759

October

$684

November

$658

December

$733

Temperature and rainfall in Belfast Intl by month

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

BFS

Temperature

41 - 60.8 °F

Related info for your journey

Find useful and relevant information for your journey from Boston to Belfast Intl. 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 Intl?

    For a flight from Boston to Belfast Intl, you will be flying from Logan Intl. Boston Logan Intl (BOS) is just 2.6 mi from the center of the city. Logan Intl is the only Boston airport and it handles 0 outbound flights to Belfast Intl per day. 2 airlines have flights to Belfast Intl from Boston Logan Intl on a regular basis.

  • Can I find flights from Boston to Belfast Intl Airport for under $900 on Cheapflights?

    Yes, there are multiple flights from Boston to Belfast Intl Airport for under $900. The cheapest flight booked recently is on Multiple Airlines for just $884, but on average you can expect to pay $1,067.

  • Are there last-minute flights available from Boston to Belfast Intl Airport for under $900?

    There are currently 8+ open flights from Boston to Belfast Intl Airport within the next 7 days for less than $900.

  • What does BOS to BFS mean?

    These are just IATA (International Air Transport Association) codes. They are used in aviation to identify and differentiate airports. That’s why a Boston Logan Intl Airport to Belfast Intl Airport flight would often be abbreviated as a BOS to BFS flight.

  • Can I find deals for flights from Boston to Belfast Intl that include extra baggage allowance?

    The amount of baggage you can bring on your Boston to Belfast Intl flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Boston to Belfast Intl with specific airlines?

    Yes, Cheapflights allows you to browse and filter Boston to Belfast Intl flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

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

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

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

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

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

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

  • Can I find deals for flights from Boston to Belfast Intl that allow pets onboard?

    Many airlines flying from Boston to Belfast Intl offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Boston to Belfast Intl?

    Yes, you can often find last-minute deals on Boston to Belfast Intl flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Boston to Belfast Intl Airport flight deals updated?

    The Boston to Belfast Intl Airport flight deals you see on this page were last updated on 5/16.

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 Intl
See prices for flight routes from nearby airports that may be better suited for you.

Boston to Belfast City flights
Hartford to Belfast City flights
Worcester to Belfast City flights

Top 2 airlines flying from Boston to Belfast Intl

Discover the top 2 airlines that operate flights from Boston to Belfast Intl. 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 2,637,452 searches. Data last updated May 16, 2024.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$518Average$701FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
British AirwaysCheapest$601Average$776FlexibilityNo cancel feeOn-time70%
Search British Airways flights
San Francisco to Cancún flights
Dallas to Paris flights
Newark Airport to Boston flights
Honolulu to Las Vegas flights
Cleveland to Tampa flights
Los Angeles to Salt Lake City flights
Newark Airport to Dallas flights
Dallas to Toronto flights
New York to Chicago flights
New York to Amsterdam flights
Minneapolis to Phoenix flights
Boston to Bulgaria flights

Search flights from Boston to Belfast Intl by cabin class

Find flights from Boston to Belfast Intl, based on your preferred cabin class, be it economy, premium economy, business, or first class.
First Class
Business Class
Prem Econ Class
Economy Class

Book a flight to one of these trending destinations

User searches for flights to these destinations increased 20% or more in the past 90 days compared to other destinations
Flights to Montes Claros
Flights to Girona Costa Brava
Flights to Naxos
Flights to Bourgas
Flights to Hyannis Barnstable
Flights to Samos
Flights to Reggio Calabria Tito Menniti
Flights to Devils Lake
Flights to Ningbo Lishe Intl
Flights to Pellston Emmet County
Flights to Provincetown
Flights to Cortez Montezuma County
Flights to Ohrid
Flights to Oran Es Senia
Flights to Menorca/Mahon
Flights to Hakodate
Flights to Ordu/Giresun
Flights to Laayoune Hassan I
Flights to Cornwall Newquay
Flights to Melilla
Flights to Rennes St Jacques
Flights to Parikia Paros
Flights to Constanţa Mihail Kogalniceanu
Flights to Miyakojima Hirara

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Boston to Belfast Intl?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Belfast Intl from Boston today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Boston to Belfast Intl?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Boston to Belfast Intl.

Can Cheapflights find flights from Boston to Belfast Intl with no change fees?

Yes, we can. To see specific flights from Boston to Belfast Intl with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Boston to Belfast Intl become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Belfast Intl from Boston today and book when prices fit your budget.

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.
View all available airlines