Cheap flights from London to Allentown from £326

Travelers frequently search for route combinations, such as London and Istanbul, Tirana, Barcelona, Jeddah, Tel Aviv, Prague, Paris, Athens, Bucharest, Málaga, Marrakesh, Bangkok, Rome, Chișinău, Madrid, Budapest, Edinburgh, New York, Oslo, Agadir.

Travelers frequently search for route combinations, such as Allentown and Fort Lauderdale, Orlando, Tampa, Sarasota, Monrovia, Richmond, Saint Vincent, Riga, Medford, Spokane, West Palm Beach, Kannur, Yangon, Pensacola, Amsterdam, Provo, Fes, Freetown, Santo Domingo, Melbourne.

London is mainly served by Gatwick. But there are other airports nearby, including Heathrow, London Stansted, Luton, London Southend, London City, RAF Northolt.

The main airport in London is Gatwick. It is also served by Birmingham, Bristol, East Midlands, Southampton, Cardiff, Bournemouth, Exeter, Norwich, Humberside.

The main airport in Allentown is Lehigh Valley International. It is also served by John F. Kennedy International, Newark Liberty International, Philadelphia International, LaGuardia, Baltimore–Washington International, Ronald Reagan Washington National, Atlantic City International, Long Island MacArthur, New York Stewart International Airport, Lehigh Valley International.

Currently, you can fly between London and Allentown with Allegiant Air, JetBlue Airways, Frontier Airlines, Icelandair, United Airlines.

If you don’t have specific dates for your trip between London and Allentown, you can enter a date range into the departure and return fields. Most carriers on the Kiwi.com website allow you to search and book up to six months from the day of your search. Order the search results by the best, cheapest, or fastest route, or find the cheapest outbound and return combination in the pricing table.

Traveling between London and Allentown, you can choose between direct (nonstop) flights or flights with one or more stops. You can select the number of stops on your journey, including an overnight stopover, and the duration of the stopover. What’s more, you can also select where you want to have your stopover. Want to say "Hi" to a friend in another city en route to your destination? Or fancy a quick round of shopping? Go Multi-City or Nomad and add places to your search that you wish to visit.

There are a number of airports in and around London. The main one is Gatwick and other nearby airports include Birmingham, Bristol, East Midlands, Southampton, Cardiff, Bournemouth, Exeter, Norwich, Humberside