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$461 Find Cheap Flights from Boston to Belfast

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 departing on 1/2. 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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Search hundreds of travel sites at once for deals on flights to Belfast

 
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 45,682,092 times on KAYAK, and here is why:

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

 
These are the cheapest deals for flights from Boston to Belfast currently on KAYAK along with options from the most popular airlines KAYAK users selected for this route. 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.

Recent one-way flight deals from Boston to Belfast

Only flying one-way? Below are some of the best one-way flight deals from Boston to Belfast found on KAYAK recently.

Recent last minute flight deals from Boston to Belfast

Leaving soon but still want a bargain? Check out these latest deals for last minute flights from Boston to Belfast.

Recent direct flight deals from Boston to Belfast

The latest deals for direct flights from Boston to Belfast so you can sit back and relax without the need for a layover.

Cheap bus & train deals from Boston to Belfast

Find recent round-trip train or bus tickets from Boston to Belfast.

All round-trip flight deals to Belfast

The cheapest plane tickets to Belfast found on KAYAK recently.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
7:15 pm - 11:30 pmBOS-BFS
23h 15m2 stops
6:40 am - 6:00 pmBFS-BOS
16h 20m2 stops
Sun, May 4 - Thu, May 8
10:00 pm - 4:35 pmBOS-BHD
13h 35m1 stop
6:30 am - 7:35 pmBHD-BOS
18h 05m1 stop
$620Finnair
Find Deal
Wed, Jan 8 - Sat, Jan 18
6:25 pm - 10:05 amBOS-BHD
10h 40m1 stop
9:10 am - 7:23 pmBHD-BOS
15h 13m2 stops
$640American Airlines
Find Deal
Wed, Jan 8 - Sat, Jan 18
8:05 pm - 2:35 pmBOS-BHD
13h 30m1 stop
1:50 pm - 10:42 pmBHD-BOS
13h 52m2 stops
$647American Airlines
Find Deal
Sun, Apr 6 - Mon, Apr 14
9:50 pm - 1:00 pmBOS-BHD
10h 10m1 stop
9:35 am - 8:57 pmBHD-BOS
16h 22m2 stops
$657British Airways
Find Deal
Sun, May 4 - Thu, May 8
7:25 am - 9:00 amBOS-BHD
20h 35m1 stop
8:05 pm - 4:45 pmBHD-BOS
25h 40m1 stop
$674British Airways
Find Deal
Thu, Apr 10 - Fri, Apr 18
3:34 pm - 4:50 pmBOS-BHD
20h 16m2 stops
6:30 am - 8:55 pmBHD-BOS
19h 25m2 stops
$699Delta
Find Deal
Sun, Apr 6 - Mon, Apr 14
5:02 pm - 4:50 pmBOS-BHD
18h 48m2 stops
6:30 am - 5:49 pmBHD-BOS
16h 19m2 stops
$734Delta
Find Deal
Wed, Jan 8 - Sat, Jan 18
5:30 pm - 1:50 pmBOS-BHD
15h 20m2 stops
6:35 am - 3:30 pmBHD-BOS
13h 55m2 stops
$845Aer Lingus
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Sun, May 4 - Thu, May 8
9:25 pm - 5:20 pmBOS-BHD
14h 55m2 stops
6:40 am - 6:50 pmBHD-BOS
17h 10m2 stops
$911Aer Lingus
Find Deal
Thu, Apr 10 - Fri, Apr 18
7:30 am - 6:50 pmBOS-BHD
30h 20m1 stop
$461Iberia
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Thu, Jan 2
7:25 pm - 8:20 pmBOS-BHD
19h 55m2 stops
$530British Airways
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Thu, Jan 2
10:00 pm - 2:55 pmBOS-BHD
11h 55m1 stop
9:55 am - 7:35 pmBHD-BOS
14h 40m1 stop
$615British Airways
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Tue, Nov 19 - Tue, Nov 26
6:25 pm - 11:10 amBOS-BHD
11h 45m1 stop
11:30 am - 7:35 pmBHD-BOS
13h 05m1 stop
$618British Airways
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Sat, Nov 16 - Fri, Nov 22
6:25 pm - 1:25 pmBOS-BHD
14h 00m1 stop
11:30 am - 7:35 pmBHD-BOS
13h 05m1 stop
$619British Airways
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Sat, Nov 16 - Fri, Nov 22
8:20 pm - 2:15 pmBOS-BHD
12h 55m1 stop
6:30 am - 1:10 pmBHD-BOS
11h 40m1 stop
$622British Airways
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Sat, Nov 16 - Sun, Nov 24
8:20 pm - 11:10 amBOS-BHD
9h 50m1 stop
6:45 am - 5:39 pmBHD-BOS
15h 54m2 stops
$629American Airlines
Find Deal
Sat, Nov 16 - Fri, Nov 22
8:20 pm - 11:10 amBOS-BHD
9h 50m1 stop
6:30 am - 5:39 pmBHD-BOS
16h 09m2 stops
$633American Airlines
Find Deal
Sat, Nov 16 - Sun, Nov 24
7:10 pm - 9:00 pmBOS-BHD
20h 50m1 stop
6:30 am - 6:46 pmBHD-BOS
17h 16m2 stops
$664KLM
Find Deal
Tue, Nov 19 - Tue, Nov 26
5:30 pm - 4:50 pmBOS-BHD
18h 20m2 stops
6:30 am - 8:00 pmBHD-BOS
18h 30m2 stops
$674Delta
Find Deal
Sat, Nov 16 - Fri, Nov 22
5:45 pm - 9:40 pmBOS-BFS
22h 55m2 stops
3:45 pm - 3:50 pmBFS-BOS
29h 05m2 stops
Mon, Nov 18 - Sun, Nov 24
5:45 pm - 9:40 pmBOS-BFS
22h 55m3 stops
3:45 pm - 3:50 pmBFS-BOS
29h 05m2 stops
Mon, Nov 18 - Sun, Nov 24

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.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Boston to Belfast, 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 is January, where tickets cost $602 on average. On the other hand, the most expensive months are July and August, where the average cost of tickets is $983 and $926 respectively.

Good to know

Cheapest flight

$461
Flight from Boston to Belfast City 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 $461 for a one-way ticket and $547 for a round-trip.

  • 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
7.6Boarding
7.0Entertainment
6.6Food
8.0Crew
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.

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.

No fast track available, no organisation. Unpleasant boarding system at gate 20 at JFK. When giving feedback to the lounge team I was told to talk to the manager instead of taking the feedback.

The whole experience was great. The only improvement would be the entertainment selection

I will travel by BA only in future also. Only suggestion is they should give aisle seat in front near washroom for senior citizens

It was good overall. Entertainment was ok, one of the TV screens had issue. Bit old plane but leg space was good. Overhead luggage had good space. The worst part was experience at Heathrow airport, it was total chaos.

Comfortable, pleasant staff, quiet, good entertainment, food, drinks. Better than American (flight back) when we were crammed in and staff sometimes indifferent.

Pretty disappointing. Paid for business class. It was burning up the entire flight. For a 7 hr flight, after the first few hrs. The crew disappeared. Poor service.

One frustration after another. No gate personnel until very close to departure. Boarding procedure was chaos. Plane was dirty from previous transatlantic flight. Entertainment system not operational. Gate change for connecting flight which required another round of security clearance, almost causing a missed flight. The final blow was lost baggage upon arrival.

Book cheap flights from Boston to Belfast

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Boston to Belfast found on KAYAK in the last 72 hours.
1/2Thu
1 stopIberia
30h 20mBOS-BHD
$461
1/2Thu
2 stopsBritish Airways
19h 55mBOS-BHD
$530

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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.
11/19Tue
multi-stopBritish Airways
11h 55mBOS-BHD
11/26Tue
multi-stopBritish Airways
14h 40mBHD-BOS
$615
11/16Sat
multi-stopBritish Airways
11h 45mBOS-BHD
11/22Fri
multi-stopBritish Airways
13h 05mBHD-BOS
$618
11/16Sat
multi-stopBritish Airways
14h 00mBOS-BHD
11/22Fri
multi-stopBritish Airways
13h 05mBHD-BOS
$619
11/16Sat
multi-stopBritish Airways
12h 55mBOS-BHD
11/24Sun
multi-stopBritish Airways
11h 40mBHD-BOS
$622
11/16Sat
multi-stopAmerican Airlines
9h 50mBOS-BHD
11/22Fri
multi-stopAmerican Airlines
15h 54mBHD-BOS
$629
11/16Sat
multi-stopAmerican Airlines
9h 50mBOS-BHD
11/24Sun
multi-stopAmerican Airlines
16h 09mBHD-BOS
$633
11/19Tue
multi-stopKLM
20h 50mBOS-BHD
11/26Tue
multi-stopKLM
17h 16mBHD-BOS
$664
11/16Sat
multi-stopDelta
18h 20mBOS-BHD
11/22Fri
multi-stopDelta
18h 30mBHD-BOS
$674
11/18Mon
multi-stop
22h 55mBOS-BFS
11/24Sun
multi-stop
29h 05mBFS-BOS
$858
11/18Mon
multi-stop
22h 55mBOS-BFS
11/24Sun
multi-stop
29h 05mBFS-BOS
$862

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

Information on your arrival and departure airports