BOS - BFS

£181 Find Cheap Flights from Boston to Belfast Intl Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boston to Belfast Intl departing on 28/1. 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.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Belfast Intl Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to Belfast, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to Belfast, as well as popular online travel agencies
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41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest return fare
£437
Overall average: £574
Multiple Airlines
Sun 11/1Tue 27/1
BOS - BFS • 1 stop
Cheapest one-way flight
£181
Multiple Airlines
Wed 28/1
BOS - BFS • 2 stops
When to travel
September
Cheapest • 26% price drop
September
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Belfast Intl!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Boston to Belfast Intl (BOS-BFS)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Boston to Belfast Intl that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Boston to Belfast Intl

Sun, 11 Jan - Tue, 27 Jan
Multiple Airlines Logo
20:00 - 18:15
BOS
-
BFS
17h 15m1 stop
Multiple Airlines Logo
06:00 - 16:00
BFS
-
BOS
15h 00m1 stop
£437Multiple Airlines
Wed, 28 Jan - Wed, 4 Feb
Multiple Airlines Logo
19:50 - 20:50
BOS
-
BFS
20h 00m2 stops
Multiple Airlines Logo
07:20 - 17:50
BFS
-
BOS
15h 30m2 stops
£471Multiple Airlines
Sun, 11 Jan - Tue, 27 Jan
Multiple Airlines Logo
20:00 - 21:55
BOS
-
BFS
20h 55m1 stop
Multiple Airlines Logo
20:55 - 20:55
BFS
-
BOS
53h 00m2 stops
£493Multiple Airlines
Sun, 11 Jan - Tue, 27 Jan
Multiple Airlines Logo
19:10 - 12:50
BOS
-
BFS
12h 40m1 stop
Multiple Airlines Logo
20:55 - 20:55
BFS
-
BOS
53h 00m2 stops
£501Multiple Airlines
Sun, 11 Jan - Tue, 27 Jan
Multiple Airlines Logo
19:50 - 21:55
BOS
-
BFS
21h 05m2 stops
Multiple Airlines Logo
05:45 - 14:35
BFS
-
BOS
37h 50m3 stops
£509Multiple Airlines
Wed, 28 Jan - Wed, 4 Feb
Multiple Airlines Logo
16:35 - 22:20
BOS
-
BFS
24h 45m3 stops
Multiple Airlines Logo
14:15 - 20:00
BFS
-
BOS
34h 45m2 stops
£520Multiple Airlines
Wed, 28 Jan - Wed, 4 Feb
Multiple Airlines Logo
16:35 - 22:20
BOS
-
BFS
24h 45m3 stops
Multiple Airlines Logo
20:55 - 14:35
BFS
-
BOS
46h 40m3 stops
£552Multiple Airlines
Sun, 11 Jan - Tue, 27 Jan
Multiple Airlines Logo
19:50 - 20:40
BOS
-
BFS
19h 50m3 stops
Multiple Airlines Logo
19:40 - 14:35
BFS
-
BOS
47h 55m3 stops
£596Multiple Airlines
Tue, 2 Jun - Tue, 9 Jun
Multiple Airlines Logo
22:50 - 15:55
BOS
-
BFS
12h 05m1 stop
Multiple Airlines Logo
07:00 - 21:05
BFS
-
BOS
19h 05m2 stops
£632Multiple Airlines
Tue, 2 Jun - Mon, 8 Jun
Multiple Airlines Logo
22:50 - 15:55
BOS
-
BFS
12h 05m1 stop
Multiple Airlines Logo
07:00 - 21:05
BFS
-
BOS
19h 05m2 stops
£641Multiple Airlines
Booking Insights

KAYAK's insights & trends for Boston to Belfast Intl flights

Get data-powered insights and trends into flights from Boston to Belfast Intl to help you find the cheapest flights, the best time to fly and much more.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Boston to Belfast Intl Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Boston to Belfast Intl Airport is September, where tickets cost £459 (return) on average. On the other hand, the most expensive months are November and December, where the average cost of round-trip tickets is £1,112 and £913 respectively.

Find deals

Good to know - Cheap tickets from Boston to Belfast Intl Airport

Low seasonNovember
Cheapest flight£181
Best time to beat the crowds but there is an average 78% increase in price.
Most popular time to fly and prices are also 27% lower on average.
Flight from Boston to Belfast Intl Airport

When to book flights from Boston to Belfast Intl

Are your dates flexible? Find out the best times to travel from Boston to Belfast Intl based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Boston to Belfast Intl Airport flights

  • What is the cheapest flight from Boston to Belfast Intl Airport?

    In the last 3 days, the lowest price for a flight from Boston to Belfast Intl Airport was £181 for a one-way ticket and £437 for a return.

  • Which aircraft models fly most regularly from Boston to Belfast Intl Airport?

    We unfortunately don’t have that data for this specific route.

  • How does KAYAK find such low prices on flights from Boston to Belfast Intl Airport?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Boston to Belfast Intl Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Boston to Belfast Intl Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Belfast Intl Airport from Boston is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Boston to Belfast Intl Airport?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Belfast Intl Airport with an airline and back to Boston with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Boston to Belfast Intl Airport?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Belfast Intl Airport from Boston up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight from Boston to Belfast Intl

Information on your arrival and departure airports

Boston (BOS)
Belfast Intl (BFS)