$494 Find Cheap Flights from Boston to Belfast

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boston to Belfast departing on 3/24. 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.
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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
In the last 7 days travelers have searched 41,299,237 times on KAYAK, and here is why:

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Cheap Flight Deals from Boston to Belfast (BOS-BHD)

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

Recent round-trip flight deals from Boston to Belfast

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from Boston to Belfast.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
8:30 am - 9:10 amBOS-BFS
20h 40m1 stop
10:35 am - 8:10 pmBFS-BOS
14h 35m1 stop
Mon, Mar 24 - Mon, Mar 31
8:30 am - 1:30 pmBOS-BHD
25h 00m1 stop
8:50 am - 10:35 pmBHD-BOS
18h 45m1 stop
Mon, Mar 24 - Mon, Mar 31
7:39 pm - 2:15 pmBOS-BHD
14h 36m2 stops
11:30 am - 3:00 pmBHD-BOS
32h 30m2 stops
$605British Airways
Find Deal
Wed, Mar 19 - Wed, Apr 9
7:39 pm - 2:10 pmBOS-BHD
14h 31m2 stops
9:50 am - 8:50 pmBHD-BOS
16h 00m2 stops
$608British Airways
Find Deal
Mon, Mar 24 - Mon, Mar 31
7:37 pm - 3:20 pmBOS-BHD
14h 43m2 stops
7:00 pm - 3:58 pmBHD-BOS
25h 58m2 stops
$611British Airways
Find Deal
Tue, Apr 1 - Sat, Apr 12
10:00 pm - 4:45 pmBOS-BHD
13h 45m1 stop
6:35 am - 9:55 pmBHD-BOS
20h 20m1 stop
$636Finnair
Find Deal
Tue, Jan 14 - Tue, Jan 21
10:00 pm - 4:45 pmBOS-BHD
13h 45m1 stop
3:05 pm - 9:55 pmBHD-BOS
11h 50m1 stop
$641Finnair
Find Deal
Tue, Jan 14 - Tue, Jan 21
8:20 pm - 2:55 pmBOS-BHD
13h 35m1 stop
6:35 am - 1:25 pmBHD-BOS
11h 50m1 stop
$646American Airlines
Find Deal
Tue, Jan 14 - Tue, Jan 21
8:20 pm - 1:35 pmBOS-BHD
12h 15m1 stop
6:35 am - 1:25 pmBHD-BOS
11h 50m1 stop
$651American Airlines
Find Deal
Tue, Jan 14 - Tue, Jan 21
1:00 pm - 4:50 pmBOS-BHD
22h 50m2 stops
6:30 am - 8:04 pmBHD-BOS
18h 34m2 stops
$701Delta
Find Deal
Tue, Jan 14 - Tue, Jan 21

Flights from Boston to Belfast - Travel Insights & Trends

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

Which airlines provide the cheapest flights from Boston to Belfast?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the past 3 days, the cheapest round-trip tickets from Boston to Belfast were found on British Airways ($605) and Finnair ($636).

Good to know

Cheapest flight

$494
Flight 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 round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips 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 flights from Boston to Belfast

  • What is the cheapest flight from Boston to Belfast?

    In the last 3 days, the lowest price for a flight from Boston to Belfast was $494 for a round-trip ticket.

  • Do I need a passport to fly between Boston and Belfast?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Boston and on arrival in Belfast.

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

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

  • Which airline alliances offer flights from Boston to Belfast?

    oneworld, and SkyTeam are the airline alliances operating flights between Boston and Belfast, with oneworld being the most commonly used for this route.

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

    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.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Belfast from Boston 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 Belfast?

    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 to Belfast 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?

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

See more FAQs

Top airlines flying from Boston to Belfast

 
See real verified KAYAK customer reviews for airlines flying from Boston to Belfast. 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 Belfast? 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.
7.2
American AirlinesOverall score based on 10000 reviews
6.5Food
7.0Entertainment
8.0Crew
7.6Boarding
7.2Comfort
Airline reviews

Overall flight was as expected. It would have been better with a couple options for snack instead of only one item and if there was a TV or music as option. But overall satisfied.

8.0 ExcellentAnonymous, Nov 2024BOS - PHL
Read more American Airlines reviews

Overall flight was as expected. It would have been better with a couple options for snack instead of only one item and if there was a TV or music as option. But overall satisfied.

There were several issues with this flight. I have flown quite often internationally and I was surprised by the lack of presence of attendants other than meal and drink times. The food was not best but I feel that is the norm. We also had to get off the plane once in London via stairs and bus to the terminal. Anyone who had another flight had to then get another bus to another terminal. This causes me to miss my flight and have to rebook.

The boarding process was a nightmare and though we were traveling business class, we were in Group 2 and the organization was terrible. The Business Class on this flight was crowded and did not feel clean and nice. Overall, I would not travel Business again on the American Airline flight through British Airways Not nearly special enough for the considerable cost .

Not too impressed with them to be honest. They had forgotten my gf meal, despite the fact that the app had notified me that it was sorted. Apparently there is a ‘glitch’ in the system, according to one of the stewardesses, and has been for a while. Also the legroom in economy is way too small (and I’m a slight person) and are very uncomfortable. An extra Internal flight I booked via the app, had not even given me the option to order a meal, so was unaware of that and left without food on a 9 hr. flight !! Don’t think I’ll use AA again after this.

AA is fabulous. However , Iberia cancelled our Boston - Barcelona flight the morning of the flight - 9/16/24. This was almost a week ago and we have still heard nothing from Iberia/Vueling. Found out from a kayak email that morning that the flight was cancelled. Iberia Customer service reps wouldn’t help us and said to call Vueling. No one answers phone at Vueling. Terrible wild goose chase on DAY OF TRAVEL. AA came to our rescue.

Boston ticket agent Cheryl Porter is WONDERFUL. Our Iberia flight to Barcelona was cancelled the morning we were scheduled to leave and Cheryl was our super hero - she found us seats on a flight to London and on to Barcelona. Truly a “can-do” attitude which we appreciated so much after the Iberia ticket agents told us there was “absolutely nothing they could do”. (As did the customer service agents at Iberia’s call center) Ms Porter is truly a wonderful person who genuinely cares about travelers!

The foot ottoman cushion was missing on my business class seat.. the hydraulics is on its last leg & seat cushions do not have support or paddling. Heavily dented by butts

3 hour delay on run way, not even a drink offered, staff seemed rude and rushed, felt unwell so asked twice for paracetamol and was told to wait, never got it

Gate agents for boarding not trained. I am disabled have eyesight problems and was told “do it on line.”. Wheelchair unavailable in Dallas even though it was in my record

I like the speed of boarding and deplaning and the fact that everything was on time. The crew (attendants) were probably quite new and did not begin the in cabin service until 30 min before landing even though there was little to no air turbulence for the last 1.5 hours of the flight. It made for a mad scramble at the end to get trash collected and carts stowed before touch down.

Flight delay and can’t much help passenger do the change connecting flight.

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

Easy and quick check in, clean and nice seats. Overall excellent experience.

The seats in airbus from LA to London are uncomfortable. They are too narrow. I am a slim person but felt cramped. The way the seats are laid out really hinders privacy. You are forced to look at the person next to you which is awkward, Also the entertainment on the same leg was limited. The crew was excellent and attentive and the food was decent. The seats on London to Delhi leg were way better. The crew again was very attentive and polite.

Great job notifying of 30 minute delay in departure. Fabulous job making up for the time and arriving as scheduled. Air travel is just no fun anymore with the extreme overcrowding, and someone needs to come up with an innovative plan for loading and unloading passengers (load all window seats first, middle seats second, aisle seats last?). Great job getting the luggage on the carousel in record time!

Although it was an overnight flight, the crew could’ve have made more refreshment passes.

All and it was good . But no one woke me when meals came around . Please have a don’t not disturb sign if you opted for that . Left very hungry missing all meals .

Late in leaving the US. Late in arriving in UK. 2 plua hous on ground in UK before leaving. Late in arriving in Spain. Didn't get our bags until the next night.

British Airways canceled my flight and I had to fly on Lufthansa the next day. What a garbage airline 🗑️

3 hr delay. No water given while on the plane for 3hrs.

Book cheap flights from Boston to Belfast

One-way flight deals

multi-stopMultiple Airlines
2979 miBOS-BF1

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Last minute flights from Boston to Belfast

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Boston to Belfast that are departing in the next 10 days.
12/23Mon
multi-stopBritish Airways
12h 55mBOS-BHD
12/30Mon
multi-stopBritish Airways
33h 13mBHD-BOS
$1,338
12/23Mon
multi-stopBritish Airways
11h 55mBOS-BHD
12/30Mon
multi-stopBritish Airways
33h 13mBHD-BOS
$1,358
12/23Mon
multi-stop
12h 55mBOS-BHD
12/30Mon
multi-stop
15h 25mBHD-BOS
$2,018

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

Information on your arrival and departure airports

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