Find flights
When to book
FAQs

Cheap flights from London to Allentown from £505

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/6. Fares are subject to change and may not be available on all flights or dates of travel.
LON — ABE
5 Jul — 12 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from London to Allentown

Enter your travel dates to find the best prices.

Cheapest flights from London to Allentown
Explore the most affordable flight options available from London to Allentown. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 5 June 2026.

Fri 13/1111:00
LHR
-
ABE
1 stop16h 15m
Multiple Airlines
Tue 17/1106:00
ABE
-
LHR
1 stop24h 35m
Multiple Airlines
Deal found 3/6£652
Tue 7/709:55
LHR
-
ABE
2 stops18h 13m
Virgin Atlantic
Tue 21/713:08
ABE
-
LHR
2 stops18h 02m
Virgin Atlantic
Deal found 31/5£705
Thu 9/708:40
LHR
-
ABE
2 stops19h 28m
Delta
Mon 13/713:08
ABE
-
LHR
2 stops18h 02m
Delta
Deal found 1/6£754
Fri 13/1106:50
LHR
-
ABE
2 stops15h 06m
United Airlines
Tue 17/1114:30
ABE
-
LHR
1 stop12h 25m
United Airlines
Deal found 3/6£779
Thu 5/1106:35
LHR
-
ABE
2 stops19h 37m
United Airlines
Mon 9/1110:38
ABE
-
LHR
2 stops16h 47m
United Airlines
Deal found 1/6£837
Tue 7/715:00
LHR
-
ABE
1 stop14h 23m
American Airlines
Tue 21/717:09
ABE
-
LHR
1 stop13h 06m
American Airlines
Deal found 31/5£871
Thu 16/709:20
LHR
-
ABE
1 stop18h 48m
Virgin Atlantic
Thu 23/713:08
ABE
-
LHR
2 stops16h 32m
Virgin Atlantic
Deal found 1/6£872

Find flight deals from London to Allentown

Discover tips and strategies to find the most affordable flight options for your journey from London (LON) to Allentown (ABE). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 5 June 2026.

Round-trip from

£652

One-way from

£505
13/11-17/11
  • 13/11-17/11
  • 2 total stops
  • 40h 50m total
  • London to Allentown
Search Deals
11/6
  • 11/6
  • 3 total stops
  • 59h 49m total
  • London to Allentown
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from London to Allentown that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 5 June 2026.
Use the filters below to find and compare flights from London to Allentown that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Fri 13/11

11:00-22:15

1 stop16h 15m

Allentown-Bethlehem

Tue 17/11

06:00-11:35

1 stop24h 35m

£652

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Thu 9/7

08:40-23:08

2 stops19h 28m

Allentown-Bethlehem

Mon 13/7

13:08-12:10

2 stops18h 02m

£754
Fastest return journey

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Tue 7/7

09:20-17:25

1 stop13h 05m

Allentown-Bethlehem

Tue 21/7

18:05-11:20

1 stop12h 15m

£772

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Fri 13/11

06:50-16:56

2 stops15h 06m

Allentown-Bethlehem

Tue 17/11

14:30-07:55

1 stop12h 25m

£779

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Thu 5/11

06:35-21:12

2 stops19h 37m

Allentown-Bethlehem

Mon 9/11

14:30-12:00

1 stop16h 30m

£837

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Thu 16/7

09:20-17:25

1 stop13h 05m

Allentown-Bethlehem

Thu 23/7

13:08-06:25

1 stop12h 17m

£872
Cheapest one-way

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Thu 11/6

16:50-23:39

3 stops59h 49m

£505

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Sun 29/11

12:30-22:46

1 stop15h 16m

£508
Fastest single journey

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Mon 27/7

15:15-23:08

1 stop12h 53m

£675

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Fri 7/8

11:10-22:40

1 stop16h 30m

£697

Flights are sorted by cheapest return flights first.

Deals found on 31/5

Showing 1-10 of 15 resultsSorted by cheapest first
1
2

Best time to book a flight from London to Allentown

Have a flexible travel schedule? Discover the best time to fly to Allentown from London with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

What’s the top stopover airport for flights from London to Allentown?

Share of one-stop return flights from London to Allentown chosen by Cheapflights users in the past 12 months, using the same stopover each way.

Atlanta (ATL) – chosen by Cheapflights users on 71% of one-stop itineraries from London to Allentown on Cheapflights.

What’s the cheapest stopover airport for flights from London to Allentown?

Average return fare for one-stop flights from London to Allentown, chosen by Cheapflights users in the past 12 months, with the same stopover each way.

Atlanta (ATL) is the most affordable one-stop option, with an average return flight price of £642.

What’s the fastest stopover option from London to Allentown?

Shortest average travel time for one-stop one-way flights from London to Allentown, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.

Flights via Chicago (ORD) have the shortest average one-way travel time for one-stop routes: 13h 18m.

Which airport typically offers the quickest stopover for flights from London to Allentown?

Average stopover duration for one-stop one-way flights from London to Allentown, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Atlanta (ATL) offer the fastest connection on this route, with an average stopover time of 1h 36m.

Related info for your journey

Find useful and relevant information for your journey from London to Allentown. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Allentown from London?

    If you book a flight to Allentown from London, you will be flying to Allentown-Bethlehem, which is the city’s only airport. Allentown-Bethlehem (ABE) is located 3.9 mi from the center of Allentown. There are 0 flights from London to Allentown-Bethlehem per day from 0 different airlines.

  • How long is the flight from London to Allentown?

    Airlines like Delta, Virgin Atlantic, and United Airlines fly from London to Allentown in about 13h 05m. The time it takes to get you to your destination can typically vary by up to 6h 23m. The distance between London and Allentown is about 3507 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • Can I find deals for flights from London to Allentown that include hotel bookings?

    Yes. In addition to deals on London to Allentown flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from London to Allentown?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Allentown.

  • Can I find deals for business class flights from London to Allentown?

    Yes. Cheapflights offers flight deals from London to Allentown by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for London to Allentown

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to John F Kennedy Intl flights
Heathrow to Newark flights
Gatwick to John F Kennedy Intl flights
Heathrow to LaGuardia flights
Gatwick to Newark flights
Stansted to John F Kennedy Intl flights
London City to John F Kennedy Intl flights
Gatwick to LaGuardia flights
Luton to John F Kennedy Intl flights
Stansted to Newark flights
Luton to Newark flights
Manchester to John F Kennedy Intl flights
Heathrow to Dulles Intl flights
London City to Newark flights
Stansted to LaGuardia flights
Manchester to Newark flights
Manchester to LaGuardia flights
Heathrow to Philadelphia flights
Edinburgh to Newark flights
Edinburgh to John F Kennedy Intl flights
Luton to LaGuardia flights
Heathrow to Reagan-National flights
Gatwick to Dulles Intl flights
London City to Dulles Intl flights
Stansted to Dulles Intl flights
Gatwick to Reagan-National flights
Edinburgh to LaGuardia flights
Luton to Dulles Intl flights
Gatwick to Philadelphia flights
Birmingham to John F Kennedy Intl flights
London City to Philadelphia flights
Southend to John F Kennedy Intl flights
Birmingham to Newark flights
Stansted to Philadelphia flights
Birmingham to LaGuardia flights
Luton to Philadelphia flights
Edinburgh to Dulles Intl flights
Heathrow to Pittsburgh flights
Manchester to Dulles Intl flights
Newcastle upon Tyne to John F Kennedy Intl flights
Edinburgh to Philadelphia flights
Newcastle upon Tyne to LaGuardia flights
Manchester to Reagan-National flights
Newcastle upon Tyne to Newark flights
London City to Reagan-National flights
Manchester to Philadelphia flights
Edinburgh to Reagan-National flights
Southampton to John F Kennedy Intl flights
Norwich to Newark flights
Norwich to John F Kennedy Intl flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from London to Allentown?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from London to Allentown. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from London to Allentown?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Allentown from London.

Can Cheapflights find flights from London to Allentown with no change fees?

Need flexible booking options for your flight to Allentown from London? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from London to Allentown become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Allentown from London today and book when prices fit your budget.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.