$376 Find Cheap Flights from Belfast to the United States

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Belfast to the United States departing on 5/19. 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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Cheap Flights from Belfast to the United States

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
New York
Newark2 stops$659
Los Angeles
Los Angeles1 stop$780
Las Vegas
Las Vegas1 stop$1,103
San Francisco
San Francisco1 stop$823
Boston
Boston2 stops$752
Fort Lauderdale
Fort Lauderdale2 stops$825
Seattle
Seattle2 stops$828
Houston
Houston1 stop$1,332
New York
Newark2 stops$659
Los Angeles
Los Angeles1 stop$780
Las Vegas
Las Vegas1 stop$1,103
San Francisco
San Francisco1 stop$823
Boston
Boston2 stops$752
Fort Lauderdale
Fort Lauderdale2 stops$825
Seattle
Seattle2 stops$828
Houston
Houston1 stop$1,332

Book Cheap Belfast to the United States Plane Tickets

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

Wed, May 6 - Wed, May 13
Multiple Airlines Logo
9:35 pm - 7:25 pm
BFS
-
BWI
26h 50m
2 stops
Multiple Airlines Logo
8:30 pm - 8:15 pm
BWI
-
BFS
18h 45m
2 stops
$642Multiple Airlines
Wed, May 6 - Sat, May 9
Multiple Airlines Logo
3:40 pm - 1:15 pm
BFS
-
EWR
26h 35m
2 stops
Multiple Airlines Logo
5:20 pm - 8:40 pm
EWR
-
BFS
22h 20m
3 stops
$659Multiple Airlines
Wed, May 6 - Sat, May 9
Multiple Airlines Logo
7:30 am - 1:15 pm
BFS
-
EWR
34h 45m
2 stops
Multiple Airlines Logo
5:45 pm - 8:40 pm
EWR
-
BFS
21h 55m
2 stops
$660Multiple Airlines
Wed, May 6 - Sat, May 9
Multiple Airlines Logo
9:35 pm - 3:55 pm
BFS
-
JFK
23h 20m
1 stop
Multiple Airlines Logo
6:20 pm - 7:45 am
JFK
-
BFS
32h 25m
1 stop
$668Multiple Airlines
Thu, Sep 10 - Thu, Sep 24
British Airways Logo
9:35 am - 10:27 pm
BHD
-
MCO
17h 52m
2 stops
British Airways Logo
1:38 pm - 10:10 am
MCO
-
BHD
15h 32m
2 stops
$786British Airways
Tue, Apr 28 - Tue, May 5
British Airways Logo
12:40 pm - 8:10 pm
BHD
-
IAD
12h 30m
1 stop
British Airways Logo
5:35 pm - 10:45 am
IAD
-
BHD
12h 10m
1 stop
$787British Airways
Tue, Apr 28 - Tue, May 5
British Airways Logo
9:40 am - 11:42 pm
BHD
-
MCO
19h 02m
2 stops
British Airways Logo
12:06 pm - 10:45 am
MCO
-
BHD
17h 39m
2 stops
$803British Airways
Tue, Jul 28 - Thu, Aug 13
British Airways Logo
6:30 am - 8:02 pm
BHD
-
MCO
18h 32m
2 stops
British Airways Logo
7:23 pm - 3:30 pm
MCO
-
BHD
15h 07m
2 stops
$807British Airways
Tue, Jun 23 - Tue, Aug 11
American Airlines Logo
9:40 am - 12:07 am
BHD
-
BWI
19h 27m
2 stops
American Airlines Logo
7:25 pm - 10:45 am
BWI
-
BHD
10h 20m
1 stop
$823American Airlines
Tue, Jun 23 - Tue, Aug 11
American Airlines Logo
1:45 pm - 8:20 pm
BHD
-
IAD
11h 35m
1 stop
American Airlines Logo
9:14 am - 10:45 am
IAD
-
BHD
20h 31m
2 stops
$839American Airlines
Booking Insights

KAYAK's insights & trends for Belfast to the United States flights

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

What is the cheapest month to fly from Belfast to the United States?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Belfast to the United States, 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 Belfast to the United States is May, when tickets cost $541 (return) on average. On the other hand, the most expensive months are July and December, when the average cost of round-trip tickets is $769 and $758 respectively.

Good to know

Cheapest flight$376
Flight from Belfast Intl Airport to Los Angeles

FAQs - booking United States flights

  • How does KAYAK find such low prices on flights from Belfast to the United States?

    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 Belfast to the United States.

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

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

    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 Belfast to the United States 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 Belfast to the United States?

    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 Belfast to the United States 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 Belfast to the United States

 
Need help choosing which airline to fly with from Belfast to the United States? 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 7841 reviews
6.8Comfort
6.4Food
6.9Boarding
6.4Entertainment
7.6Crew
Airline reviews

There was a delay for the San Francisco-London flight, but we were all informed via text and email. The staff was very friendly and nice and the food was good. I do recommend that the airline offer something without eggs or something vegan for the vegetarian meal option. A lot of Indians are lacto-vegetarian, while some could be allergic to eggs/dairy.

10.0 ExcellentLakshmi, Mar 2026
LHR - SFO
Read more British Airways reviews

There was a delay for the San Francisco-London flight, but we were all informed via text and email. The staff was very friendly and nice and the food was good. I do recommend that the airline offer something without eggs or something vegan for the vegetarian meal option. A lot of Indians are lacto-vegetarian, while some could be allergic to eggs/dairy.

food options were terrible. for a 10-hour flight, there should be 2 decent meals. Also, flight attendants should come around with drinks more than just at the meals.

Smooth flight. The seats were comfortable but the reclining mechanism didn't work very well. My wife's seat required the flight attendant to push the seat forward while she pushed the button. The leg support didn't want to return to its home under the seat. I ordered the diabetic meal which was full of carbs. It was low in sugar but carbs turn into sugar so was it really diabetic? Overall the flight was pleasant, long but pleasant.

Crew were nice, food was good. Boarding was horrendous. We were driven around the airport in a bus forced to climb a long flight of very steep stairs with no adequate handrails to board the plane . In many many years of flying to the US I have never been required to do this . There was no assistance for those needing help getting up the stairs to the plane. A fellow passenger helped me. No idea how other elderly, physically limited passengers or those with young children managed . It was a full flight with crowds trying to get up the stairs. It was an accident waiting to happen.

Horrible, the plane is just old and junky...Filthy restroom, seat was as hard as rock. The food, mystery side dish, inedible..geez..just Horrible. Never flying BA again

the service on Business class should be improved to be at par with industry leaders like Cathay Pacific and Singapore AIrlines. A lot of room for improvement.

Late takeoff, but on time landing. Lost bags, 3 days to find them, still in transit to my location. Power outlets broken, Wi-Fi not working, so much for working on the long flight.

Good. For a long flight. The comfort of the seat could be better. Also, the food was « normal » plane food. Not indian plane food unfortunately! Everything else was smooth and great.

The seats were comfortable. So many empty seats allowed for stretching out and sleeping. The onboard entertainment was pretty good. The cabin crew were so kind and kept the passengers well- hydrated, and well fed.

We had American Airlines on our return and it was confusing if we were going with Aa or BA I had 2 different flight numbers and didn’t get our gate until it was boarding. So we were a bit nervous as the which it was

Everything you need to know for your flight from Belfast to the United States

Cabin class types available on flights to the United States

Cabin classes available on flights to the United States. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.