£174 Find Cheap Flights from Boston to Belfast – Compare and Save

1 adult
1 adult, Economy, 0 bags

Save 25% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Everything you should know

Cheapest return flight
£530
Typical prices: £456-£994
British Airways
Sat 13/10Sat 20/10
BOS - BHD • 1 stop
Cheapest one-way flight
£174
Typical prices: £241-£413
Multiple Airlines
Thu 18/10
BOS - BFS • 2 stops
Direct flights
Not available
There are currently no direct flights between Boston and Belfast. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to travel
September
Cheapest • 35% price drop
April
Most popular
Good to know
+1
Good to know
+1
Top stopover airports
London Heathrow (LHR)
Cheapest • Avg £653 (return)
Amsterdam Schiphol (AMS)
Shortest trip • 15h 45m (one-way)
Insights
Insights
Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you enjoy your trip to Belfast!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Boston to Belfast (BOS-BHD)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Boston to Belfast

Tue, 13 Oct - Tue, 20 Oct
British Airways Logo
21:50 - 15:20BOS  Boston Logan Intl-BHD Belfast City
12h 30m1 stop London Heathrow
British Airways Logo
12:40 - 20:05BHD  Belfast City-BOS Boston Logan Intl
12h 25m1 stop London Heathrow
£530British Airways
Mon, 12 Oct - Fri, 16 Oct
Multiple Airlines Logo
23:00 - 20:40BOS  Boston Logan Intl-BFS Belfast Intl
16h 40m2 stops Reykjavik Keflavik Intl Glasgow Intl
Multiple Airlines Logo
08:20 - 21:45BFS  Belfast Intl-BOS Boston Logan Intl
18h 25m2 stops Glasgow Intl Reykjavik Keflavik Intl
£575Multiple Airlines
Wed, 25 Nov - Sun, 29 Nov
Multiple Airlines Logo
19:50 - 16:15BOS  Boston Logan Intl-BFS Belfast Intl
15h 25m3 stops Reykjavik Keflavik Intl Dublin Manchester
Multiple Airlines Logo
21:15 - 19:55BFS  Belfast Intl-BOS Boston Logan Intl
27h 40m3 stops London Luton Barcelona-El Prat Lisbon Humberto Delgado
£603Multiple Airlines
Wed, 25 Nov - Wed, 2 Dec
Multiple Airlines Logo
19:50 - 17:05BOS  Boston Logan Intl-BHD Belfast City
16h 15m3 stops Reykjavik Keflavik Intl Dublin Birmingham
Multiple Airlines Logo
16:45 - 14:40BHD  Belfast City-BOS Boston Logan Intl
26h 55m3 stops London Luton Madrid Barajas Lisbon Humberto Delgado
£604Multiple Airlines
Wed, 25 Nov - Wed, 2 Dec
Multiple Airlines Logo
21:20 - 17:45BOS  Boston Logan Intl-BFS Belfast Intl
15h 25m2 stops Dublin Leeds/Bradford
Multiple Airlines Logo
21:10 - 19:55BFS  Belfast Intl-BOS Boston Logan Intl
27h 45m3 stops London Luton Barcelona-El Prat Lisbon Humberto Delgado
£610Multiple Airlines
Mon, 26 Oct - Mon, 2 Nov
Multiple Airlines Logo
18:15 - 14:20BOS  Boston Logan Intl-BFS Belfast Intl
16h 05m2 stops Dublin Edinburgh Turnhouse
Multiple Airlines Logo
09:35 - 19:05BFS  Belfast Intl-BOS Boston Logan Intl
14h 30m2 stops Edinburgh Turnhouse Dublin
£610Multiple Airlines
Thu, 15 Oct - Mon, 19 Oct
Multiple Airlines Logo
17:25 - 18:55BOS  Boston Logan Intl-BFS Belfast Intl
20h 30m2 stops Dublin Edinburgh Turnhouse
Multiple Airlines Logo
10:30 - 20:20BFS  Belfast Intl-BOS Boston Logan Intl
14h 50m1 stop Porto
£616Multiple Airlines
Wed, 25 Nov - Mon, 30 Nov
KLM Logo
19:25 - 16:45BOS  Boston Logan Intl-BHD Belfast City
16h 20m1 stop Amsterdam Schiphol
KLM Logo
17:20 - 14:20BHD  Belfast City-BOS Boston Logan Intl
26h 00m1 stop Amsterdam Schiphol
£618KLM
Mon, 16 Nov - Thu, 17 Dec
Delta Logo
20:55 - 09:10BOS  Boston Logan Intl-BHD Belfast City
31h 15m1 stop Amsterdam Schiphol
Delta Logo
09:40 - 14:20BHD  Belfast City-BOS Boston Logan Intl
33h 40m1 stop Amsterdam Schiphol
£619Delta
Thu, 29 Oct - Mon, 2 Nov
Multiple Airlines Logo
18:15 - 16:20BOS  Boston Logan Intl-BFS Belfast Intl
18h 05m2 stops Dublin Edinburgh Turnhouse
Multiple Airlines Logo
06:30 - 17:50BFS  Belfast Intl-BOS Boston Logan Intl
16h 20m2 stops London Gatwick Reykjavik Keflavik Intl
£621Multiple Airlines
Booking Insights

Price, demand, and travel trends for Boston to Belfast flights

Use KAYAK data on prices, travel dates, airlines, and seasonal trends to compare options and book flights from Boston to Belfast with more confidence.

How much is a return flight from Boston to Belfast?

Return flights from Boston to Belfast start at £530. Prices are typical for this route right now, with typical return fares ranging from £456 to £994. The lowest price found in the past 5 days was £530 on British Airways.

What's the cheapest day of the week to fly from Boston to Belfast?

Wednesday is the cheapest day of the week to fly from Boston to Belfast and is 38% cheaper than the average day. Tuesday is the most expensive day with flight prices 87% higher than average. Based on deals found by KAYAK users in the last 12 months.

Find deals

Key details for Boston to Belfast flights

Low season

January

Cheapest flight

£174
Best time to beat the crowds (30% less expensive on average)
Most popular time to fly and prices are also 4% lower on average.
Flights from Boston to Belfast Intl Airport

When to book flights from Boston to Belfast

Are your dates flexible? Find out the best times to travel from Boston to Belfast based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price

Your Boston to Belfast flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines, and booking questions.

  • Which airports can I use when flying from Boston to Belfast?

    Flights from Boston to Belfast usually depart from Boston Logan Intl (BOS) and may arrive at several airports in Belfast area, including Belfast Intl (BFS) and Belfast City (BHD).

  • Which airports do connecting flights from Boston to Belfast pass through?

    Connecting flights from Boston to Belfast most commonly pass through:

    • London Heathrow (LHR) – 90% of one-stop connections
    • Amsterdam Schiphol (AMS) – 10% of one-stop connections
    Together, these airports account for 100% of one-stop bookings on this route.

  • Can I save money by using flexible dates for flights from Boston to Belfast?

    Yes. Being flexible with your travel dates can save you up to 67% on the Boston to Belfast route. Wednesday is the cheapest departure day at £402 return on average, while Tuesday is the most expensive at £1,202, a difference of £800. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What popular places can I visit in Belfast?

    Some of the most popular sights in Belfast are Cathedral Quarter, Waterfront Hall, and Queen's University of Belfast. These are among the most viewed places in Belfast on KAYAK.

  • How long is a flight from Boston to Belfast?

    A direct flight from Boston to Belfast takes 0h 00m, covering 2,979 miles.

  • Do I need a passport to fly from Boston to Belfast?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How are flight prices from Boston to Belfast looking right now?

    One-way fares from Boston to Belfast are currently lower than usual. Average one-way flight prices are about £217, which is 30% below the typical average for this route.

  • How much time can I save by choosing a different stopover airport from Boston to Belfast?

    Flying via London Heathrow (LHR) gives the shortest average 1-stop total travel time of 11h 42m, compared to 15h 45m via Amsterdam Schiphol (AMS).

  • What is the time difference between Boston and Belfast?

    Belfast is 5 hours ahead of Boston (British Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.

  • What car hire options are available in Belfast?

    Since Belfast is served by multiple airports, car hire options and rates can vary depending on which one you fly into.
    Near Belfast City Airport (BHD) – daily rates from around £9:

    • Budget
    • Sixt
    • Enterprise Rent-A-Car
    • Hertz
    • Avis

    Near Belfast Intl Airport (BFS) – daily rates from around £8:

    • Budget
    • DRIVALIA
    • Sixt
    • Alamo
    • Hertz

  • How much should I expect to pay for a Boston to Belfast flight?

    Return flights from Boston to Belfast range from £456 to £994, with an average of £641 over the past 12 months. Anything below £456 counts as a good deal.

Your guide to booking Boston to Belfast flights

Get tips on when to book, when to fly, and what to know before your trip.
  • If your dates are flexible, aim for a Wednesday departure instead of Tuesday. On this route, Wednesday flights average £402 – about £800 less than Tuesday (67% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Boston to Belfast trip for September. Fares historically average £418 return in that month – typically £806 less than the most expensive month, which is May (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Belfast City Airport.
    - Titanic Hotel Belfast
    - Premier Inn Belfast Titanic Quarter
    - Park Avenue

More options for your flight from Boston to Belfast

Complete your trip to Belfast with a hotel stay or car hire

Car hire in Belfast
Hotels in Belfast
Holidays in Belfast