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 45% of people opting to fly with this airline when travelling to Allentown. Keep in mind that there are 18 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 October 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.

£417 Cheap Flights from London to Allentown in 2025/26

Q: What is the typical price of a round-trip flight between London and Allentown?

Prices are currently high for flights on this route. Typical prices usually range from £582 to £590. The lowest price recently found on this route was £637.

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Voted winner of Europe's Best Travel App 2023

Save money when you book flights with momondo

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from London to Allentown

Round-trip

One-way

Cheap return flights

Enter your travel dates to find the best prices.

19:40 - 22:11LHR-ABE

31h 31m2 stops

12:49 - 06:50ABE-LHR

37h 01m2 stops

£637Virgin Atlantic

Find Deal

Sun, 14 Dec - Sun, 21 Dec

08:55 - 17:14LHR-ABE

13h 19m1 stop

18:04 - 07:50ABE-LHR

32h 46m1 stop

£642Virgin Atlantic

Find Deal

Sun, 14 Dec - Sun, 21 Dec

19:10 - 10:55LHR-ABE

19h 45m2 stops

17:47 - 11:15ABE-LHR

12h 28m2 stops

£816American Airlines

Find Deal

Fri, 27 Mar - Tue, 31 Mar

12:55 - 00:14LHR-ABE

15h 19m2 stops

17:47 - 11:15ABE-LHR

12h 28m2 stops

£821American Airlines

Find Deal

Fri, 27 Mar - Tue, 31 Mar

06:30 - 17:19LHR-ABE

15h 49m2 stops

06:25 - 07:40ABE-LHR

20h 15m2 stops

£829KLM

Find Deal

Sat, 29 Nov - Sat, 6 Dec

12:30 - 22:52LHR-ABE

14h 22m1 stop

13:00 - 06:30ABE-LHR

12h 30m1 stop

£833Delta

Find Deal

Fri, 27 Mar - Tue, 31 Mar

06:30 - 22:12LHR-ABE

20h 42m2 stops

12:54 - 07:50ABE-LHR

13h 56m1 stop

£927Virgin Atlantic

Find Deal

Sat, 29 Nov - Sat, 6 Dec

07:40 - 16:47LHR-ABE

14h 07m1 stop

13:00 - 11:15ABE-LHR

17h 15m1 stop

£981United Airlines

Find Deal

Sat, 29 Nov - Sat, 6 Dec

06:00 - 22:24LHR-ABE

45h 24m3 stops

07:15 - 11:20ABE-LHR

23h 05m2 stops

£1,114Multiple Airlines

Find Deal

Sun, 14 Dec - Sun, 21 Dec

Virgin Atlantic flights from London to Allentown

Our best Virgin Atlantic deals on London to Allentown flight tickets

Virgin Atlantic

14 Dec

LHR19:40London Heathrow

31h 31m

2 stops

ABE22:11Allentown-Bethlehem

21 Dec

ABE12:49Allentown-Bethlehem

37h 01m

2 stops

LHR06:50London Heathrow

£637

Find similar

Virgin Atlantic

14 Dec

LHR08:55London Heathrow

13h 19m

1 stop

ABE17:14Allentown-Bethlehem

21 Dec

ABE18:04Allentown-Bethlehem

32h 46m

1 stop

LHR07:50London Heathrow

£642

Find similar

Virgin Atlantic

29 Nov

LHR06:30London Heathrow

20h 42m

2 stops

ABE22:12Allentown-Bethlehem

6 Dec

ABE12:54Allentown-Bethlehem

13h 56m

1 stop

LHR07:50London Heathrow

£927

Find similar

American Airlines flights from London to Allentown

Our best American Airlines deals on London to Allentown flight tickets

American Airlines

27 Mar

LHR19:10London Heathrow

19h 45m

2 stops

ABE10:55Allentown-Bethlehem

31 Mar

ABE17:47Allentown-Bethlehem

12h 28m

2 stops

LHR11:15London Heathrow

£816

Find similar

American Airlines

27 Mar

LHR12:55London Heathrow

15h 19m

2 stops

ABE00:14Allentown-Bethlehem

31 Mar

ABE17:47Allentown-Bethlehem

12h 28m

2 stops

LHR11:15London Heathrow

£821

Find similar

Fly from

Fly to

Route

Depart

Return

Price

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Sun 14/12

19:40-22:11

2 stops31h 31m

Allentown-Bethlehem

Sun 21/12

12:49-06:50

2 stops37h 01m

£637

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Sun 14/12

08:55-17:14

1 stop13h 19m

Allentown-Bethlehem

Sun 21/12

18:04-07:50

1 stop32h 46m

£642

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Fri 27/3

19:10-10:55

2 stops19h 45m

Allentown-Bethlehem

Tue 31/3

17:47-11:15

2 stops12h 28m

£816

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Fri 27/3

12:55-00:14

2 stops15h 19m

Allentown-Bethlehem

Tue 31/3

17:47-11:15

2 stops12h 28m

£821

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Sat 29/11

06:30-17:19

2 stops15h 49m

Allentown-Bethlehem

Sat 6/12

06:25-07:40

2 stops20h 15m

£829

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Fri 27/3

12:30-22:52

1 stop14h 22m

Allentown-Bethlehem

Tue 31/3

13:00-06:30

1 stop12h 30m

£833

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Sat 29/11

06:30-22:12

2 stops20h 42m

Allentown-Bethlehem

Sat 6/12

12:54-07:50

1 stop13h 56m

£927

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Sat 29/11

07:40-16:47

1 stop14h 07m

Allentown-Bethlehem

Sat 6/12

13:00-11:15

1 stop17h 15m

£981

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Sun 14/12

06:00-22:24

3 stops45h 24m

Allentown-Bethlehem

Sun 21/12

07:15-11:20

2 stops23h 05m

£1,114

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Wed 22/4

09:20-17:17

1 stop12h 57m

£417

Flights are sorted by cheapest return flights first.

Showing 1-10 of 19 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 typical price of a round-trip flight between London and Allentown?

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 £476. Flights from London to Allentown on a Sunday will generally be more expensive and average around £851. 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 £579 when looking at flights departing at midday. Flights in the morning are often more expensive, with an average ticket price of £621.

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

Direct flights	None

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 13h 19m, 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 October 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 £540	Free Cancellation	Rating 7.6 1,333 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.