What is the cheapest airline that flies from London to Allentown-Bethlehem?

Delta is the most popular carrier operating from London to Allentown-Bethlehem

Which airlines fly to Allentown?

British Airways, Lufthansa and United Airlines are the top three most popular airlines that fly to Allentown from London 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 17 different airlines that fly to Allentown on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from London to Allentown-Bethlehem Airport?

Prices for flights from London to Allentown-Bethlehem Airport refresh daily.

How many operators does momondo search for flights from London to Allentown-Bethlehem Airport?

The number of operators available for flights from London to Allentown-Bethlehem Airport is 1 as of December 2025.

How old do you have to be to fly from London 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 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.

£430 Cheap Flights from London to Allentown in 2025/26

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13:45 - 10:41

LHR

ABE

49h 56m2 stops

11:30 - 07:55

ABE

LHR

15h 25m1 stop

£730United Airlines

Thu, 22 Jan - Mon, 26 Jan

09:00 - 10:41

LHR

ABE

30h 41m2 stops

16:57 - 07:55

ABE

LHR

33h 58m1 stop

£732United Airlines

Thu, 22 Jan - Mon, 26 Jan

06:35 - 21:05

LHR

ABE

19h 30m2 stops

16:57 - 15:50

ABE

LHR

17h 53m2 stops

£760United Airlines

Thu, 22 Jan - Mon, 26 Jan

06:35 - 21:05

LHR

ABE

19h 30m2 stops

16:57 - 15:50

ABE

LHR

17h 53m2 stops

£762United Airlines

Thu, 22 Jan - Mon, 26 Jan

10:25 - 21:05

LHR

ABE

15h 40m1 stop

16:57 - 11:15

ABE

LHR

13h 18m1 stop

£769United Airlines

Thu, 22 Jan - Mon, 26 Jan

07:40 - 16:22

LHR

ABE

13h 42m1 stop

16:57 - 11:15

ABE

LHR

13h 18m1 stop

£770United Airlines

Thu, 22 Jan - Mon, 26 Jan

13:35 - 10:41

LHR

ABE

26h 06m1 stop

16:57 - 11:15

ABE

LHR

13h 18m1 stop

£788United Airlines

Fri, 30 Jan - Fri, 6 Feb

16:50 - 17:18

LHR

ABE

29h 28m2 stops

06:28 - 20:10

ABE

LHR

56h 42m2 stops

£790Virgin Atlantic

Mon, 5 Jan - Sat, 10 Jan

15:50 - 17:18

LHR

ABE

30h 28m1 stop

14:00 - 09:00

ABE

LHR

38h 00m2 stops

£1,368Multiple Airlines

Mon, 5 Jan - Sat, 10 Jan

15:50 - 17:18

LHR

ABE

30h 28m1 stop

14:00 - 09:00

ABE

LHR

14h 00m1 stop

£1,712Virgin Atlantic

Mon, 5 Jan - Sat, 10 Jan

United Airlines flights from London to Allentown

Our best United Airlines deals on London to Allentown flight tickets

United Airlines

22 Jan

LHR09:00London Heathrow

30h 41m

2 stops

ABE10:41Allentown-Bethlehem

26 Jan

ABE11:30Allentown-Bethlehem

16h 40m

2 stops

LHR09:10London Heathrow

£730

Find similar

United Airlines

22 Jan

LHR09:00London Heathrow

30h 41m

2 stops

ABE10:41Allentown-Bethlehem

26 Jan

ABE16:57Allentown-Bethlehem

33h 58m

1 stop

LHR07:55London Heathrow

£732

Find similar

United Airlines

22 Jan

LHR06:35London Heathrow

19h 30m

2 stops

ABE21:05Allentown-Bethlehem

26 Jan

ABE16:57Allentown-Bethlehem

17h 53m

2 stops

LHR15:50London Heathrow

£762

Find similar

Delta flights from London to Allentown

Our best Delta deals on London to Allentown flight tickets

Delta

29 Jan

LHR06:30London Heathrow

21h 20m

2 stops

ABE22:50Allentown-Bethlehem

5 Feb

ABE06:28Allentown-Bethlehem

18h 52m

2 stops

LHR06:20London Heathrow

£622

Find similar

Delta

29 Jan

LHR10:45London Heathrow

17h 05m

1 stop

ABE22:50Allentown-Bethlehem

5 Feb

ABE12:48Allentown-Bethlehem

17h 52m

1 stop

LHR11:40London Heathrow

£635

Find similar

Fly from

Fly to

Route

Depart

Return

Price

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Thu 22/1

13:45-10:41

2 stops49h 56m

Allentown-Bethlehem

Mon 26/1

11:30-07:55

1 stop15h 25m

£730

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Thu 22/1

09:00-10:41

2 stops30h 41m

Allentown-Bethlehem

Mon 26/1

16:57-07:55

1 stop33h 58m

£732

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Thu 22/1

06:35-21:05

2 stops19h 30m

Allentown-Bethlehem

Mon 26/1

16:57-15:50

2 stops17h 53m

£760

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Thu 22/1

06:35-21:05

2 stops19h 30m

Allentown-Bethlehem

Mon 26/1

16:57-15:50

2 stops17h 53m

£762

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Thu 22/1

10:25-21:05

1 stop15h 40m

Allentown-Bethlehem

Mon 26/1

16:57-11:15

1 stop13h 18m

£769

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Thu 22/1

07:40-16:22

1 stop13h 42m

Allentown-Bethlehem

Mon 26/1

16:57-11:15

1 stop13h 18m

£770

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Fri 30/1

13:35-10:41

1 stop26h 06m

Allentown-Bethlehem

Fri 6/2

16:57-11:15

1 stop13h 18m

£788

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Mon 5/1

16:50-17:18

2 stops29h 28m

Allentown-Bethlehem

Sat 10/1

06:28-20:10

2 stops56h 42m

£790

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Mon 5/1

15:50-17:18

1 stop30h 28m

Allentown-Bethlehem

Sat 10/1

14:00-09:00

2 stops38h 00m

£1,368

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Mon 5/1

15:50-17:18

1 stop30h 28m

Allentown-Bethlehem

Sat 10/1

14:00-09:00

1 stop14h 00m

£1,712

Flights are sorted by cheapest return flights first.

Showing 1-10 of 15 resultsSorted by cheapest first

How to get the cheapest flight ticket from London 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

Prices

Airlines

What is the cheapest day to depart on your flight to Allentown?

The cheapest day to depart from London to Allentown is on a Monday when prices can be found for as low as £469. Flights from London to Allentown on a Sunday will generally be more expensive and average around £839. 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 at midday is the least expensive time of day to depart. momondo users have found prices as low as £570 when looking at flights departing at midday. Flights in the morning are often more expensive, with an average ticket price of £612.

When to book flights from London to Allentown

Are you open to changing your travel dates? Check out the ideal times to fly from London to Allentown according to our flight data. Find out which month and days have the cheapest flights.

Estimated return price

Cheap London to Allentown (LON to ABE) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London to Allentown

Fastest flight time	16h 22m
Direct flights	None

The fastest flight from London to Allentown takes 16h 22m

There are no direct flights from London to Allentown. There are no popular flight routes from London to Allentown.

Search flight deals

How far is London to Allentown-Bethlehem by plane?
Allentown-Bethlehem is 3523.4 mi away from London. Flights usually cover this in 16h 22m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from London to Allentown-Bethlehem Airport?
Prices for flights from London to Allentown-Bethlehem Airport refresh daily.
How many operators does momondo search for flights from London to Allentown-Bethlehem Airport?
The number of operators available for flights from London to Allentown-Bethlehem Airport is 1 as of December 2025.
How old do you have to be to fly from London 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 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.

Best airlines flying from London to Allentown

Compare and see reviews for airlines that fly from London to Allentown with momondo

Airline	Rating	Free Cancellation	Price
Finnair	PriceFrom £532	Free Cancellation	Rating 7.6 1,338 reviews		Search Finnair flights

Why use momondo?

Why should I use momondo to find a flight deal from London to Allentown?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Allentown from London.

Can I find flights from London to Allentown with flexible booking policies on momondo?

Yes. All flights to Allentown from London on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from London to Allentown?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Allentown from London.

I’m not ready to book a flight from London to Allentown right now. Can momondo alert me if prices change?

If you are not ready to book a flight from London to Allentown now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Allentown and let you know when they change.