Find flights
Deals
When to book
FAQs & Tips
Airlines

Find cheap flights from Boston to Northern Ireland from $333

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 10/21. 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
0 bags
Wed 7/10
Wed 7/17

Search hundreds of travel sites at once for deals on flights to Northern Ireland

In the last 7 days travelers have searched 42,898,604 times on KAYAK, and here is why:

Save 21% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Bundle and saveSave money when you bundle your flight + hotel.

Best Northern Ireland Flight Deals

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Belfast
Belfast1 stop$596

Good to know

Low season

March

High season

August

Cheapest flight

$333
Best time to beat the crowds with an average 32% drop in price.
Most popular time to fly with an average 23% increase in price.
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 to Northern Ireland 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 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 to Northern Ireland 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 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 to Northern Ireland 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 tips for finding cheap flights to Northern Ireland

  • Morning departure is around 11% cheaper than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

Top 5 airlines serving from Boston to Northern Ireland

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.
8.0
DeltaOverall score based on 10295 reviews
8.2Boarding
7.4Food
8.6Crew
7.9Comfort
8.0Entertainment
Airline reviews

3 hours late and all they have is was a $12 meal voucher. That’s not even enough to cover fast food.

2.0 MediocreCraig, Jun 2024CVG - LGA
Read more about Delta reviews

3 hours late and all they have is was a $12 meal voucher. That’s not even enough to cover fast food.

Among the poorest flights I’ve had with Delta in a while. Entertainment system failed completely on a 7.5 hr flight. Crew seemed distracted and not the normal friendly crew. Flight overbooked it seemed… very crowded.

If I can, I always fly Delta. I’ve found their service to always be reliable and pleasant.

You could have not cancelled the flight (AA, which I will be flying from now on) left for BOS despite the fictitious weather issues (that no one in my Boston family could see). You could have rebooked my direct flight to another direct flight instead of sending me though JFK, the worst US airport after O’Hara You could have rebooked me on a Main Cabin seat (like the one I paid for in my original ticket instead of putting me a the last row on JFK->BOS leg, pocketing the difference in ticket price But I do not really care whether you will ever do that in a future because in a future neither I nor anyone from my company (unless they pay out of pocket) nor an of my clients and partners (if they heed my advice) will ever be caught dead on any of Delta flights

Really bad baggage handling. Had my Rimowa bag badly damaged at the latches.

It was pretty good I was worried with the short Layover that I might not catch my connection but the gate was there

It was good until there was a 3 hour delay because there was not any pilots to fly the plane.

There was plenty of overhead room but half of the passengers were told they had to check their carryon bags. My partner and I checked in as early as possible and our seats were split across the aisle.

Friendly flight attendants. Comfort plus seats were very comfortable and had lots of leg room. 10A and 10 B.

I've flown many many times on Northwest and then Delta. The crew on this flight were absolutely the best I've had the pleasure of being looked after by.

Great, the flight attendants were very friendly and the food was also good.

The overall flight went well and the aircrew was pleasant.

Cathay Pacific seems to be an airline in trouble and on its way out. Lots of broken or poorly functioning things like entertainment screens, seats, and enough well trained staff to handle a full flight. Sad...

The flight crew was exceptionally good. Personal needs were well met. The food choices were very nice.

Excellent. Planes are a little older and could get some refurbishment, but besides that everything was excellent.

Crew experience was more transnational, seats were so close together (LtoR and FtoB) that it was difficult to enjoy much of anything. When the person in front leaned back, there is no space for me. Sadly it was a flight to be endured not experienced.

While I was in great pain, the seat was sufficiently comfortable to allow me to rest and not be in so much pain.

we were upgraded which was a blessing and tender mercy for us. I fell the day before and was in extreme pain from knee to shoulder. Sitting in a more comfortable seat during the flight was an unexpected blessing and experience.

Not impressed with check in desk staff at Vancouver airport. Not a professional mind service and not cared or tried to help. Don’t think I would fly with them again

Seats were very comfortable. Crew were excellent. Food very good.

Overall fine but both ways for this trip was delayed.

I had back trouble prior to my flight and everyone was great about helping me.

My tv was broken on the flight which is disappointing when you pay for a seat and expect a service

Always delays from Boston to Salt lake but this time was very long. Don’t understand while they board the passengers and then make them sit in the plane

The boarding and flight were ok, but there were several painful issues. The flight was 3:20 in the air and almost four hours door to door, but they only had snack packs on the plane. They really need to have food on longer flights or make it clear to everyone that they won’t have food. They also advertise free WiFi, but it did not work for 90% of this flight. Again, almost four hours door to door. If I had known I was flying spirit for JetBlue prices then I would have planned differently.

Service for food to our seat was a bit slow. Snack choices were just pretzels or baked chips. My seat cushion was not attached. Other than Barbie, video choice were not very good or current.

After we landed, we were held on the plane for 30 minutes. There was no one at the gate once we landed and we forced to sit on a plan that had already over an hour delayed.

almost 4 hour delay as they over booked and had to wait for 8-10 volunteers to agree to travel next day.

Old plane. No outlets for laptop or phone. Seats worn out. Area around seat dirty.

I loved the flight and the crew. It was comfortable and smooth.

Information when booking said the flight would be with American Airlines but the flight was actualy with British Airways. Check in from Orlando was nice and quick. I agreed to put my cabin case in the checked luggage as it was a full flight. Case came back damaged (unable to put the handle down) so will have to dispose of it. Seats were quite cramped with very little leg room, even for economy. This was the experience of both the outgoing and return flight. Cabin crew were ok and flight time was punctual.

Missed this flight due to the first AA flight delay

Missed connection from Philadelphia to London because flight from DC was seriously delayed. Was re-routed the next day (had to pay for hotel) to Zurich and was given a main cabin middle seat while I had paid for premium. Great job AA!!!

Original flight delayed several times and finally canceled at 2:30 in the morning. Staff at the gate was not very helpful in resolving problems or communicating why there were delays. I spent 34 hours at the airport before I could leave, they couldn't book me on another early flight even after canceling my original flight. Next flight available after my original flight was canceled was 22 hours later. I will never fly American Airlines again.

very very tight seats unfriendly crew who do not seem to care about the comfort of their passengers and do not know how to smile poor ground staff support at LHR and PHX

So uncomfortable to sit in the tiny space on a long, international. Food was rough. Please, less white flour and processed food.

Worst experience flying American Airlines. I fly with them often, so I was super disappointed in the service I received at gate 30 in LGA on May 24, mid-day. The flight was delayed twice. I was patiently waiting in the American Airlines lounge when I received the notice on my app that the plane was boarding 45 minutes before its newly re-scheduled take off of 4 pm (from the orginal 1:45 pm then 3:00 pm). It took me 5 min to travel from the lounge to the gate and when I arrived there at 3:20 flight gate attendant told me the flight had closed and that they announced for passengers multiple times. I showed them the notification on my app and they were really rude and unempathetic. The person who rescheduled my flight at customer service wasn't any happier but was at least helpful in getting me on the next flight.

Our flight was delayed 2.5 hrs due to plane being too hot! After 1.5 hrs, airline decided to use another plane but had to wait for gate, baggage transfer & beverage transfer. Anyone could tell after first half hour that another plane was required and although did not affect us many would miss connecting flights at Heathrow. I have found the stewards are not the friendliest in the industry and the food is questionable, even as I like airplane food normally, the best of the 2 flights was the yogurt & granola for breakfast.

Terrible boarding , Business class seats are sub standard. As usual crew will miss your food too

Just get Economy Plus for international flights, so worth it the extra room, bigger seats…

Terrible leg room, seats don’t recline, delayed flight, and even water isn’t free onboard

Flight was canceled less than 6 hours before takeoff, rebooked on a flight that was twice as long and left earlier so we couldn’t make it, when using text support option took over 2 hours to speak with someone.

Not enough help at airport during boarding process. Flight was delayed. Overall WORST flying experience I’ve ever had. Will NEVER FLT SPIRIT AGAIN

Terrible legroom, seats do not recline, tray table the size of an iPhone, delayed flight, have to pay 5$ to get a cup of water onboard.

Could have TV/Movie and some water ou soda free

Flight was good and clean but delayed over an hour on the return flight.

The non stop flight and able to go into Atlantic City airport. They could lower the prices. It starts out low but then if you want to bring luggage and pick your seat the price goes up quite a bit.

Flight got diwngraded last minute and left us stranded. I was told I’ll be given credit for my luggage and seat upgrades but haven’t got anything yet

We can’t predict circumstances like this ahead of time, but I give your staff a hats off for immediately giving us updated informations.

It was nice! There was a very unhappy child in front of us and the flight attendant did a great job calming the child. I was impressed.

Book cheap flights from Boston to Northern Ireland

Recent round-trip flight deals

9/3Tue
1 stopBritish Airways
10h 25mBOS-BHD
9/10Tue
1 stopBritish Airways
11h 25mBHD-BOS
$596
9/3Tue
2 stopsAmerican Airlines
14h 10mBOS-BHD
9/10Tue
1 stopAmerican Airlines
10h 25mBHD-BOS
$616
9/8Sun
1 stopBritish Airways
12h 50mBOS-BHD
9/20Fri
2 stopsBritish Airways
15h 06mBHD-BOS
$634
8/4Sun
1 stopDelta
18h 55mBOS-BHD
8/20Tue
1 stopDelta
30h 10mBHD-BOS
$642
10/5Sat
1 stopAmerican Airlines
12h 10mBOS-BHD
10/13Sun
1 stopAmerican Airlines
18h 05mBHD-BOS
$645
8/4Sun
2 stopsDelta
19h 51mBOS-BHD
8/20Tue
1 stopDelta
30h 10mBHD-BOS
$646
8/16Fri
1 stopLufthansa
30h 25mBOS-BHD
8/19Mon
1 stopLufthansa
29h 25mBHD-BOS
$978
8/16Fri
1 stopKLM
15h 25mBOS-BHD
8/19Mon
2 stopsKLM
25h 25mBHD-BOS
$994
8/15Thu
2 stopsKLM
15h 15mBOS-BHD
8/21Wed
2 stopsKLM
26h 20mBHD-BOS
$1,016
6/30Sun
2 stopsLufthansa
13h 45mBOS-BHD
7/7Sun
2 stopsLufthansa
36h 35mBHD-BOS
$1,227

Search by stops

Search by airline

Search by price

Recent one-way flight deals

10/21Mon
1 stopLufthansa
15h 45mBOS-BHD
$333
10/18Fri
1 stopDelta
16h 55mBOS-BHD
$342
10/18Fri
2 stopsDelta
22h 45mBOS-BHD
$347
10/21Mon
2 stops
12h 50mBOS-BFS
$356
7/17Wed
1 stopDelta
15h 25mBOS-BHD
$377
7/17Wed
2 stopsDelta
19h 51mBOS-BHD
$382
7/17Wed
3 stops
30h 50mBOS-BFS
$417
7/17Wed
2 stops
28h 45mBOS-BFS
$458
10/21Mon
3 stops
51h 35mBOS-BFS
$1,312

Search by stops

Search by airline

Search by price

Last minute flights from Boston to Northern Ireland

Last minute flight, train and bus deals

6/12Wed
multi-stopDelta
17h 00mBOS-BHD
6/19Wed
multi-stopDelta
25h 20mBHD-BOS
$932
6/12Wed
multi-stopDelta
17h 00mBOS-BHD
6/19Wed
multi-stopDelta
30h 20mBHD-BOS
$947
6/12Wed
multi-stopDelta
20h 21mBOS-BHD
6/19Wed
multi-stopDelta
30h 20mBHD-BOS
$1,135
6/12Wed
multi-stopAmerican Airlines
18h 07mBOS-BHD
6/19Wed
multi-stopAmerican Airlines
35h 32mBHD-BOS
$1,203
6/12Wed
multi-stopAmerican Airlines
18h 07mBOS-BHD
6/19Wed
multi-stopAmerican Airlines
11h 35mBHD-BOS
$1,209
6/12Wed
multi-stopBritish Airways
13h 15mBOS-BHD
6/19Wed
multi-stopBritish Airways
14h 00mBHD-BOS
$1,990

Search by stops

Search by airline

Search by price

Boston - Northern Ireland Flights

Departure:

Boston (BOS)United States

Return flight deals:

Northern Ireland - Boston

Cabin classes: