Cheap flights from London Heathrow Airport to Allentown from £648
This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight from London Heathrow Airport to Allentown departing on 29/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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United Airlines flights from London Heathrow Airport to Allentown
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American Airlines flights from London Heathrow Airport to Allentown
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How to get the cheapest flight ticket from London Heathrow Airport to Allentown
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest day to depart on your flight to Allentown?
The cheapest day to depart from London Heathrow Airport to Allentown is on a Monday when prices can be found for as low as £462. Flights from London Heathrow Airport to Allentown on a Sunday will generally be more expensive and average around £826. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.
What is the cheapest time of day to depart on your flight to Allentown?
Flying to Allentown from London Heathrow Airport at midday is the least expensive time of day to depart. momondo users have found prices as low as £562 when looking at flights departing at midday. Flights in the morning are often more expensive, with an average ticket price of £603.
What is the cheapest airline that flies from London Heathrow to Allentown-Bethlehem?
Delta, American Airlines, and United Airlines are the most popular carriers operating from London Heathrow to Allentown-Bethlehem
Which airlines fly to Allentown?
British Airways, Lufthansa and Finnair are the top three most popular airlines that fly to Allentown from London Heathrow Airport according to our data. British Airways is the first choice among our users, with 46% of people opting to fly with this airline when travelling to Allentown. Keep in mind that there are 19 different airlines that fly to Allentown on a routine basis, so you have a few additional options to choose from.
When to book flights from London Heathrow Airport to Allentown
Cheap London Heathrow Airport to Allentown (LHR to ABE) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to Allentown
How far is London Heathrow to Allentown-Bethlehem by plane?
A flight from London Heathrow to Allentown-Bethlehem will travel around 3510.6 mi. Flights usually cover this in 13h 14m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from London Heathrow Airport to Allentown-Bethlehem Airport?
Prices for flights from London Heathrow Airport to Allentown-Bethlehem Airport are refreshed on a daily basis.
How many operators does momondo search for flights from London Heathrow Airport to Allentown-Bethlehem Airport?
There is 1 operator available for flights from London Heathrow Airport to Allentown-Bethlehem Airport as of June 2025.
How old do you have to be to fly from London Heathrow Airport to Allentown-Bethlehem Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London Heathrow Airport to Allentown-Bethlehem Airport.
What documentation or ID do you need to fly to Allentown-Bethlehem Airport?
The travel and health documents you'll need for your trip to Allentown-Bethlehem Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Allentown-Bethlehem Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from London Heathrow Airport to Allentown?
momondo data reveals that the most frequently booked airline on the route from London Heathrow Airport to Allentown is Finnair, representing 100% of all bookings.
Best airlines flying from London Heathrow Airport to Allentown
Compare and see reviews for airlines that fly from London Heathrow Airport to Allentown with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom £455 | Free Cancellation | Rating 7.6 1,292 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from London to Allentown?
We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from London to Allentown for you.
Can I find flights from London to Allentown with flexible booking policies on momondo?
Yes. momondo allows you to filter the results for London to Allentown flights to just show those with flexible booking policies.
How can momondo help me find flights from London to Allentown?
Once all potential London to Allentown flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.
I’m not ready to book a flight from London to Allentown right now. Can momondo alert me if prices change?
Yes. momondo can track prices for London to Allentown flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.