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Cheap flights from London to Allentown from £485

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 22/6. Fares are subject to change and may not be available on all flights or dates of travel.
LON — ABE
26 May — 2 Jun1
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 April 2026.

Mon 8/611:15
LHR
-
ABE
1 stop16h 15m
Virgin Atlantic
Mon 15/618:09
ABE
-
LHR
1 stop31h 16m
Virgin Atlantic
Deal found 24/4£728
Sun 7/620:55
LHR
-
ABE
2 stops30h 35m
Multiple Airlines
Sun 14/606:20
ABE
-
LHR
2 stops44h 35m
Multiple Airlines
Deal found 23/4£773
Sun 7/613:25
LHR
-
ABE
1 stop14h 05m
Virgin Atlantic
Sun 14/606:20
ABE
-
LHR
2 stops44h 35m
Virgin Atlantic
Deal found 23/4£796
Mon 8/608:40
LHR
-
ABE
2 stops37h 45m
Multiple Airlines
Mon 15/618:09
ABE
-
LHR
2 stops34h 41m
Multiple Airlines
Deal found 24/4£804
Fri 2/1008:40
LHR
-
ABE
2 stops30h 26m
United Airlines
Sun 4/1017:36
ABE
-
LHR
1 stop32h 09m
United Airlines
Deal found 25/4£833
Sun 7/613:25
LHR
-
ABE
1 stop14h 05m
KLM
Sun 14/618:09
ABE
-
LHR
1 stop12h 11m
KLM
Deal found 23/4£864

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 April 2026.

Round-trip from

£728

One-way from

£485
Virgin Atlantic
  • Virgin Atlantic
  • 8/6-15/6
  • 2 total stops
  • 47h 31m total
  • London to Allentown
Search Deals
Delta
  • Delta
  • 22/6
  • 1 total stop
  • 13h 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 April 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

Mon 8/6

11:15-22:30

1 stop16h 15m

Allentown-Bethlehem

Mon 15/6

18:09-06:25

1 stop31h 16m

£728

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Mon 8/6

08:40-17:25

2 stops37h 45m

Allentown-Bethlehem

Mon 15/6

18:09-09:50

2 stops34h 41m

£804

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Sun 7/6

13:25-17:25

1 stop33h 00m

Allentown-Bethlehem

Sun 14/6

06:20-11:20

1 stop24h 00m

£832

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Fri 2/10

08:40-10:06

2 stops30h 26m

Allentown-Bethlehem

Sun 4/10

17:36-06:45

1 stop32h 09m

£833
Fastest return journey

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Sun 7/6

06:30-17:25

2 stops15h 55m

Allentown-Bethlehem

Sun 14/6

18:09-11:20

1 stop12h 11m

£944

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Sat 6/6

08:00-21:17

1 stop18h 17m

Allentown-Bethlehem

Sat 13/6

14:23-09:35

2 stops14h 12m

£1,033

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Fri 22/5

14:10-10:03

1 stop24h 53m

Allentown-Bethlehem

Fri 29/5

14:23-06:45

1 stop11h 22m

£1,041

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Wed 10/6

08:00-17:01

1 stop14h 01m

Allentown-Bethlehem

Wed 17/6

06:15-06:30

2 stops19h 15m

£1,097
Cheapest one-way

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Mon 22/6

09:20-17:30

1 stop13h 10m

£485
Fastest single journey

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Tue 26/5

09:20-17:28

1 stop13h 08m

£843

Flights are sorted by cheapest return flights first.

Deals found on 26/4

Showing 1-10 of 19 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 56% 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.

Charlotte (CLT) is the most affordable one-stop option, with an average return flight price of £480.

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 Charlotte (CLT) have the shortest average one-way travel time for one-stop routes: 12h 29m.

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 Virgin Atlantic and United Airlines fly from London to Allentown in about 16h 15m. The time it takes to get you to your destination can typically vary by up to 14h 11m. 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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