LON - ABE

£540 Find Cheap Flights from London to Allentown

This is the cheapest return flight price found by a KAYAK user in the last 72 hours by searching for a flight from London to Allentown departing on 15/9. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Allentown

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Allentown, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Allentown, as well as popular online travel agencies
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Flights Deals

Cheap Flights from London to Allentown (LON-ABE)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from London to Allentown that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from London to Allentown

Mon, 15 Sep - Mon, 22 Sep
Delta Logo
08:40 - 22:41LHR-ABE
19h 01m2 stops
Delta Logo
12:48 - 08:50ABE-LHR
15h 02m2 stops
£540Delta
Find Deal
Mon, 15 Sep - Mon, 22 Sep
Delta Logo
09:20 - 22:41LHR-ABE
18h 21m1 stop
Delta Logo
12:48 - 07:15ABE-LHR
13h 27m1 stop
£554Delta
Find Deal
Fri, 3 Oct - Mon, 6 Oct
Virgin Atlantic Logo
09:20 - 17:31LHR-ABE
13h 11m1 stop
Virgin Atlantic Logo
18:00 - 13:30ABE-LHR
14h 30m1 stop
£564Virgin Atlantic
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Fri, 3 Oct - Mon, 6 Oct
Delta Logo
20:25 - 12:04LHR-ABE
20h 39m2 stops
Delta Logo
06:00 - 07:15ABE-LHR
20h 15m2 stops
£584Delta
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Sat, 13 Sep - Sat, 20 Sep
United Airlines Logo
08:30 - 21:54LHR-ABE
18h 24m2 stops
United Airlines Logo
13:00 - 06:20ABE-LHR
12h 20m1 stop
£610United Airlines
Find Deal
Fri, 3 Oct - Mon, 6 Oct
Virgin Atlantic Logo
09:20 - 22:41LHR-ABE
18h 21m1 stop
Virgin Atlantic Logo
18:00 - 11:10ABE-LHR
12h 10m1 stop
£614Virgin Atlantic
Find Deal
Sat, 13 Sep - Sat, 20 Sep
United Airlines Logo
08:30 - 21:54LHR-ABE
18h 24m1 stop
United Airlines Logo
17:28 - 11:45ABE-LHR
13h 17m1 stop
£632United Airlines
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Sun, 10 Aug - Sun, 17 Aug
American Airlines Logo
09:45 - 22:37LHR-ABE
17h 52m2 stops
American Airlines Logo
13:56 - 09:05ABE-LHR
14h 09m1 stop
£1,137American Airlines
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Mon, 11 Aug - Mon, 25 Aug
 Logo
08:30 - 21:57LHR-ABE
18h 27m1 stop
 Logo
17:28 - 15:40ABE-LHR
17h 12m2 stops
£1,370
Find Deal
Mon, 11 Aug - Mon, 25 Aug
 Logo
06:00 - 21:57LHR-ABE
20h 57m2 stops
 Logo
13:00 - 09:55ABE-LHR
15h 55m2 stops
£1,488
Find Deal
Booking Insights

KAYAK's insights & trends for London to Allentown flights

Get data-powered insights and trends into flights from London to Allentown to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from London to Allentown?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest return tickets from London to Allentown were found on Delta (£540) and Virgin Atlantic (£564).


Good to know - Cheap tickets from London to Allentown

Low seasonApril
Cheapest flight£540
Best time to beat the crowds (25% less expensive on average)
Most popular time to fly and prices are also 3% lower on average.
Flight from London Heathrow Airport to Allentown

When to book flights from London to Allentown

Are your dates flexible? Find out the best times to travel from London to Allentown based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from London to Allentown

  • What is the cheapest flight from London to Allentown?

    In the last 3 days, the lowest price for a flight from London to Allentown was £831 for a one-way ticket and £715 for a return.

  • Which airports will I be using when flying from London to Allentown?

    There are 2 airports in London (London Gatwick and London Heathrow.) and only 1 airport in Allentown (Allentown-Bethlehem). The cheapest flights are generally found on the London Heathrow Airport to Allentown-Bethlehem flight route.

  • Which aircraft models fly most regularly from London to Allentown?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from London to Allentown?

    SkyTeam, Star Alliance, and oneworld are the airline alliances operating flights between London and Allentown, with SkyTeam being the most commonly used for this route.

  • How does KAYAK find such low prices on flights from London to Allentown?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from London to Allentown.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from London to Allentown?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Allentown from London is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from London to Allentown?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Allentown with an airline and back to London with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from London to Allentown?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Allentown from London up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from London to Allentown

 
See real verified KAYAK customer reviews for airlines flying from London to Allentown. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from London to Allentown? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.6
FinnairOverall score based on 1316 reviews
7.5Comfort
8.1Crew
7.6Boarding
6.7Food
6.9Entertainment
Airline reviews

It was okay. The airplane was a little smaller than a flight from Thailand to Helsinki.

6.0 GoodAnonymous, Jul 2025HEL - DFW
Read more Finnair reviews

It was okay. The airplane was a little smaller than a flight from Thailand to Helsinki.

Wish that everyone would board the back of the plane first. Also let kids on first. The gate wasn’t open at arrival and we waited 45 minutes to takeoff. They made up for time in the air.

This was an absolutely exceptional flight. The flight attendants were extremely attentive and very friendly. They seemed to go out of their way to make us comfortable and to make sure that we had everything we needed., We were in business and were very happy with the size and the details for our pods. We would definitely recommend Finnair and will definitely be flying with them again.

We had an excellent trip with Finnair. This was our first time and we’re very pleased. The only issue was with the boarding - it was a little bit confusing and needs a little bit of streamlining.

Crew very lovely. Arrived an hour late due to bad weather. We were given new tickets to an other flight but it could have been organised better, so we did not have to run through the whole airport to.

Flight delayed over an hour. They said they would hold our connection but then did not.

Major problems checking in at Alaska counter. They could not find our booking code because it came from Finnair.

Do not use KAYAK or Finair for future travel. Unless you purchase the tickets directly from the airline, you were going to have a difficult time checking in. Kayak canceled my flights twice and ended up causing great difficulty in me getting back from Europe because they double sold my tickets between American Airlines and Finair. The event caused significant delays and led to me having to rebook my flights.

The staff were all particularly great. The plane was clean and fresh. The bassinet worked great. It was all very nice.

Boarding uncomfortable. Stewardess said I would have to check my carry on as there was no room in the overhead bins. Another passenger helped me find a spot.

Everything you need to know for your flight from London to Allentown

Information on your arrival and departure airports

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