Cheap flights from Belfast to Philadelphia
Cheap return flights from Belfast to Philadelphia
Find the best deals
All prices shown are per person based on return flights only. Prices found in the last 48 hours.
Philadelphia flight facts
What you need to know
What are the cheapest airlines?
- Ryanair
- American Airlines
- British Airways
These airlines usually offer the cheapest flights from Belfast to Philadelphia.
What airlines fly indirectly?
- Delta Airlines
- United Airlines
- Air Canada
These airlines fly from Belfast to Philadelphia, but you’ll have at least one layover.
How long is the flight?
12 hours 30 minutes
This is the shortest flight time from Belfast to Philadelphia.
Alternative flights from the UK to Philadelphia
Check out prices for other routes
Alternative flights from Belfast
You might find cheaper flights nearby
Today alone, Netflights has searched over five flights. 05 / Feb / 2026 is currently the lowest priced day of the year to fly the Belfast/Philadelphia route. There are around 35 flights on any given week from the UK to Philadelphia and the cheapest month to fly right now is February. Not suitable? Try running another search or viewing all cheap flight deals.
How to get cheap flights from Belfast to Philadelphia
Tips and advice from our flight experts
You've searched for flights from Belfast to Philadelphia. We've found 15 flights and compared them to give you the best offers. Ryanair is, on average, the cheapest for this route, so look out for them. The cheapest offer we've found is a one-way ticket for the route on 28/01/2026 at 16:35 at £78.
We've scanned hundreds of airfares from dozens of airlines across the globe. In total, we've found 8 airlines that operate the 5,600 km flight from Belfast to Philadelphia.
To find the best offers, book at least 2-3 months in advance. Consider traveling in the off-peak season. Ryanair is a popular choice for this route, with an average flight duration of 12 hours 30 minutes. After selecting an offer, fill out your information and proceed to payment. Consider booking a hotel with us or using our flight + hotel service to save time and money.
Other popular destinations near Philadelphia
Where other people are flying to
