£251 Find Cheap Flights from Northern Ireland 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 Northern Ireland to the United States.

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

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

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

Based on KAYAK data, the cheapest day to fly to the United States is Wednesday when return tickets can be as cheap as £423. On the other hand, the most expensive day to fly is Sunday, when return prices are £526 on average.

The cheapest time of day to fly to the United States is generally in the afternoon, when round-trip flights cost £605 on average. Morning departures are around 2% cheaper than evening flights, on average. The most expensive time of day to fly to the United States is generally at night, which is peak travel time and where the average cost of a ticket is £750.

The cheapest month for flights from Northern Ireland to the United States is November, when tickets cost £464 (return) on average. On the other hand, the most expensive months are August and December, when the average cost of round-trip tickets is £1,537 and £717 respectively.

An average direct flight from Northern Ireland to the United States takes 18h 48m, covering a distance of 3894 miles. The shortest route is Belfast Intl Airport (BFS) to Baltimore (BWI) with an average flight time of 10h 45m.

Based on KAYAK flight searches, the most popular destination is New York (59% of total searches to the United States). The next most popular destinations are Seattle (13%) and Boston (9%). Searches for flights to Denver (6%), to Houston (5%), and to Miami (2%) are also popular.