At the moment, there are two airlines flying to Allentown-Bthlehm. Go through the results to find the right flights for you – you can adjust the filters to see find even more flights to Allentown-Bthlehm.
The most popular airlines offering flights to Allentown-Bthlehm are Virgin Atlantic & KLM. Virgin Atlantic is the most popular one, but that doesn’t mean their flights will be the cheapest. If you can't find a flight time that suits you, why not look at flying out from a different airport?
The distance between London Heathrow to Allentown-Bthlehm is 5652 km. Normally, it takes about 16 hrs to fly, and you can definitely expect the journey to be at least 15 hrs 10 mins. You can see the various flight times in the results.
You can also search by month, which will reveal the cheapest time of the week to fly.
