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Cheap flights from London to Allentown from £413

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 15/9. Fares are subject to change and may not be available on all flights or dates of travel.
LON — ABE
25 Aug — 1 Sep1
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 26 July 2026.

Mon 7/909:20
LHR
-
ABE
1 stop18h 03m
Virgin Atlantic
Mon 14/906:25
ABE
-
LHR
1 stop19h 00m
Virgin Atlantic
Deal found 24/7£674
Tue 8/913:10
LHR
-
ABE
1 stop14h 30m
Multiple Airlines
Tue 15/909:13
ABE
-
LHR
1 stop21h 02m
Multiple Airlines
Deal found 25/7£691
Tue 8/908:40
LHR
-
ABE
2 stops18h 46m
Delta
Tue 15/912:56
ABE
-
LHR
2 stops18h 09m
Delta
Deal found 25/7£693
Mon 7/906:15
LHR
-
ABE
2 stops16h 08m
Delta
Mon 14/912:56
ABE
-
LHR
1 stop12h 29m
Delta
Deal found 24/7£700
Fri 9/1009:20
LHR
-
ABE
1 stop12h 55m
Virgin Atlantic
Mon 12/1013:00
ABE
-
LHR
1 stop17h 20m
Virgin Atlantic
Deal found 25/7£702
Sun 6/914:50
LHR
-
ABE
2 stops30h 52m
British Airways
Sun 13/917:17
ABE
-
LHR
2 stops21h 28m
British Airways
Deal found 23/7£717
Mon 19/1009:20
LHR
-
ABE
1 stop12h 56m
Virgin Atlantic
Fri 23/1006:39
ABE
-
LHR
1 stop19h 36m
Virgin Atlantic
Deal found 25/7£726

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 26 July 2026.

Round-trip from

£674

One-way from

£413
Virgin Atlantic
  • Virgin Atlantic
  • 7/9-14/9
  • 2 total stops
  • 37h 03m total
  • London to Allentown
Search Deals
15/9
  • 15/9
  • 2 total stops
  • 35h 10m 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 26 July 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

Tue 8/9

08:40-22:26

2 stops18h 46m

Allentown-Bethlehem

Tue 15/9

12:56-12:05

2 stops18h 09m

£693
Fastest return journey

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Mon 7/9

06:15-17:23

2 stops16h 08m

Allentown-Bethlehem

Mon 14/9

12:56-06:25

1 stop12h 29m

£700

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Fri 9/10

09:40-22:29

2 stops17h 49m

Allentown-Bethlehem

Mon 12/10

13:00-10:20

2 stops16h 20m

£710

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Sun 6/9

14:50-16:42

2 stops30h 52m

Allentown-Bethlehem

Sun 13/9

17:17-19:45

2 stops21h 28m

£717

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Mon 7/9

06:50-16:56

2 stops15h 06m

Allentown-Bethlehem

Mon 14/9

10:32-06:45

1 stop15h 13m

£731

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Sun 6/9

17:35-17:23

2 stops28h 48m

Allentown-Bethlehem

Sun 13/9

06:25-06:25

1 stop19h 00m

£741

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Thu 12/11

13:45-09:47

2 stops49h 02m

Allentown-Bethlehem

Mon 16/11

17:32-05:55

1 stop31h 23m

£754
Cheapest one-way
Fastest single journey

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Tue 15/9

09:20-17:21

1 stop13h 01m

£441

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Tue 15/9

19:00-20:25

3 stops54h 25m

£444

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Thu 24/12

17:50-22:46

2 stops33h 56m

£494

Flights are sorted by cheapest return flights first.

Deals found on 24/7

Showing 1-10 of 16 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 80% 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 £647.

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 07m.

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 Chicago (ORD) offer the fastest connection on this route, with an average stopover time of 1h 28m.

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 and Virgin Atlantic fly from London to Allentown in about 17h 49m. The time it takes to get you to your destination can typically vary by up to 57m. 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

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Alternative routes for London to Allentown

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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.

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