$333 Find Cheap Flights from Boston to Northern Ireland - Compare and Save

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 Northern Ireland departing on 8/23. 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

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Book Cheap Boston to Northern Ireland Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Boston to Northern Ireland 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 round-trip flight deals from Boston to Northern Ireland

Thu, Nov 5 - Thu, Nov 12
Multiple Airlines Logo
7:50 pm - 6:55 pm
BOS
-
BFS
18h 05m
3 stops
Multiple Airlines Logo
6:30 am - 8:00 pm
BFS
-
BOS
42h 30m
3 stops
$749Multiple Airlines
Wed, Nov 4 - Wed, Nov 18
Multiple Airlines Logo
7:50 pm - 8:45 pm
BOS
-
BFS
19h 55m
3 stops
Multiple Airlines Logo
7:55 am - 8:00 pm
BFS
-
BOS
41h 05m
3 stops
$755Multiple Airlines
Mon, Sep 14 - Mon, Sep 28
Multiple Airlines Logo
11:00 pm - 8:25 pm
BOS
-
BFS
16h 25m
2 stops
Multiple Airlines Logo
7:00 am - 8:20 pm
BFS
-
BOS
42h 20m
3 stops
$762Multiple Airlines
Sun, Sep 13 - Sun, Sep 20
Multiple Airlines Logo
10:05 am - 9:00 pm
BOS
-
BFS
29h 55m
2 stops
Multiple Airlines Logo
8:20 pm - 8:20 pm
BFS
-
BOS
29h 00m
3 stops
$765Multiple Airlines
Wed, Sep 9 - Fri, Sep 18
Multiple Airlines Logo
8:50 pm - 8:15 pm
BOS
-
BFS
18h 25m
2 stops
Multiple Airlines Logo
9:30 pm - 2:40 pm
BFS
-
BOS
46h 10m
3 stops
$766Multiple Airlines
Wed, Sep 9 - Fri, Sep 18
Multiple Airlines Logo
8:50 pm - 5:55 pm
BOS
-
BFS
16h 05m
2 stops
Multiple Airlines Logo
9:30 pm - 2:40 pm
BFS
-
BOS
46h 10m
3 stops
$768Multiple Airlines
Mon, Sep 14 - Mon, Sep 28
Multiple Airlines Logo
11:00 pm - 8:25 pm
BOS
-
BFS
16h 25m
2 stops
Multiple Airlines Logo
9:25 pm - 8:20 pm
BFS
-
BOS
27h 55m
3 stops
$772Multiple Airlines
Wed, Sep 9 - Wed, Sep 16
Multiple Airlines Logo
8:50 pm - 8:40 pm
BOS
-
BFS
18h 50m
2 stops
Multiple Airlines Logo
8:30 am - 8:20 pm
BFS
-
BOS
40h 50m
3 stops
$777Multiple Airlines
Wed, Nov 4 - Wed, Nov 18
British Airways Logo
9:30 pm - 4:35 pm
BOS
-
BHD
14h 05m
1 stop
British Airways Logo
11:25 am - 7:40 pm
BHD
-
BOS
13h 15m
1 stop
$905British Airways
Wed, Nov 4 - Wed, Nov 18
British Airways Logo
5:30 pm - 2:35 pm
BOS
-
BHD
16h 05m
2 stops
British Airways Logo
11:25 am - 7:40 pm
BHD
-
BOS
13h 15m
1 stop
$910British Airways
Booking Insights

KAYAK's insights & trends for Boston to Northern Ireland flights

Get data-powered insights and trends into flights from Boston to Northern Ireland 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 Northern Ireland?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Boston to Northern Ireland, 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 Northern Ireland is February, when tickets cost $0 (return) on average. On the other hand, the most expensive months are November and December, when the average cost of round-trip tickets is $2,370 and $1,451 respectively.

Good to know

Low season

March

Cheapest flight

$333
Best time to beat the crowds with an average 42% drop in price.
Most popular time to fly and prices are also 10% lower on average.
Flight from Boston to Belfast City Airport

FAQs - booking Northern Ireland flights

  • How does KAYAK find such low prices on flights from Boston to Northern Ireland?

    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 Northern Ireland.

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

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

  • What is the Hacker Fare option on flights from Boston to Northern Ireland?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Boston to Northern Ireland with an airline and back with another airline.

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

    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 from Boston to Northern Ireland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Boston to Northern Ireland

 
See real verified KAYAK customer reviews for airlines flying from Boston to Northern Ireland. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Boston to Northern Ireland? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
6.7
British AirwaysOverall score based on 8135 reviews
6.5Entertainment
6.8Comfort
6.4Food
7.7Crew
7.0Boarding
Airline reviews

We waited at BOS at the gate for an hour and couldn’t get a drink or anything. Once in the air the service, food and ride was excellent.

10.0 ExcellentMarilyn, Feb 2026
BOS - LHR
Read more British Airways reviews

We waited at BOS at the gate for an hour and couldn’t get a drink or anything. Once in the air the service, food and ride was excellent.

I travelled in business class and was disappointed by lack of service, curt and borderline rude time of the crew and to top it off, all of my luggage was delayed. It was like pulling teeth to even report the missing luggage and recover it the next day from the airport.

The seating has become ridiculous… like a contest to see how narrow and short they can be made- forcing anyone over 5’1 to pay more to not be twisting oneself into a pretzel. Really insane- would have thought BA was better than this. Frankly- it cancels out a lot of the positive aspects.

Online check-in 24 hours in advance something seems not so easy to check in to pick seats and to print a boarding pass

My experience with British Airways is excellent, thanks for all 🫶🏻✈️

They took my carry on and checked it in. Staff in general at Heathrow are not friendly or helpful

5 days later I have not yet received my luggage so terrible and unacceptable

Lost luggage l try contact the airline no answer FILE REFERENCE# CHQBA10196/14 SEP24/ 1043 YEE JAMES FLIGHT/DATE - BA202/13SEP/BA666/14SEP NUMBER OF BAG - 1 TICKET NUMBER- BA219096982 COLOR/ TYPE - BLACK DUFFEL/ SPORT BAG TAG NUMBER - BA401690/

Didn’t even get on the flight!! BA had a system crash and knocked many peoples boarding passes back for the connecting flight which we all would have made but ended up missing due to being refused past the barrier. There was one member of staff on and when he shift swapped the new staff member called us liars and that we were going to be too late for our flight hence the knock back which was false. I was an hour and ten minutes early for my connection flight at the time of scanning the boarding pass. Waited for three hours and ended up having to book a train home myself which was 4 hours long! Staff were useless and entire experience was an inconvenience. I had been travelling for three months and of course it was when I was back in my home country that I had the first muck up! Will not be touching BA to fly again

Flight left late and we missed our connection in London requiring an 8 hour wait in Heathrow for the next available flight. One of flight attendants was not helpful with my husband’s necessary crutches.

Everything you need to know for your flight from Boston to Northern Ireland

Information on your arrival and departure airports