Book cheap flights from London to Allentown-Bthlehm with Netflights. We scan all 57 of the weekly flights going via Allentown-Bthlehm, so that you can compare them in one place. If you can’t find what you’re looking for, simply adjust the filters to widen your search.
The most popular airlines for this route are Virgin Atlantic, Virgin Atlantic & American Airlines, while London Heathrow (LHR) is the most popular departure airport in the city. But when you fly is just as important as where you fly from. Search by month to find out when flights are at the priciest and their cheapest.
On average, the 5682 km flight to Allentown-Bthlehm takes 15 hrs 55 mins. If you want a bargain, keep an eye out for flights with Delta Air Lines, as they often have good deals. Or you could broaden your search by looking at flights to other airports in the USA to see if there are any cheaper options.
Once you’ve chosen your flight, why not check out our deals on accommodation and car hire? You’ll find lots of hotels in the USA, including some close to the airport – perfect if you're arriving late or leaving early.
