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

Prices for flights from Allentown-Bethlehem Airport to London are refreshed on a daily basis.

How old do you have to be to fly from Allentown-Bethlehem Airport to London?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Allentown-Bethlehem Airport to London.

What documentation or ID do you need to fly to London?

The required travel and health documents for your London trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at London. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$346 Cheap Flights from Allentown to London in 2026

Find the cheapest flights from Allentown to London

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

10:38 am - 12:00 pm

ABE

LHR

20h 22m

1 stop

6:50 am - 9:12 pm

LHR

ABE

19h 22m

2 stops

$759United Airlines

Wed, Nov 4 - Fri, Nov 6

10:38 am - 11:05 am

ABE

LHR

19h 27m

2 stops

6:50 am - 4:56 pm

LHR

ABE

15h 06m

2 stops

$763United Airlines

Wed, Nov 4 - Fri, Nov 6

2:30 pm - 10:50 am

ABE

LHR

15h 20m

2 stops

6:50 am - 4:56 pm

LHR

ABE

15h 06m

2 stops

$764United Airlines

Wed, Nov 4 - Fri, Nov 6

5:40 pm - 1:15 pm

ABE

LHR

14h 35m

1 stop

8:40 am - 10:46 pm

LHR

ABE

19h 06m

2 stops

$875Delta

Wed, Oct 7 - Tue, Oct 13

6:30 am - 7:55 am

ABE

LHR

20h 25m

2 stops

9:55 am - 10:46 pm

LHR

ABE

17h 51m

2 stops

$880Delta

Wed, Oct 7 - Tue, Oct 13

1:00 pm - 9:20 am

ABE

LGW

15h 20m

2 stops

10:35 am - 10:46 pm

LGW

ABE

17h 11m

2 stops

$1,399Air France

Sat, Oct 10 - Tue, Oct 13

1:00 pm - 9:20 am

ABE

LGW

15h 20m

2 stops

10:35 am - 10:46 pm

LGW

ABE

17h 11m

2 stops

$1,687Air France

Sat, Oct 10 - Tue, Oct 13

1:08 pm - 9:25 am

ABE

LGW

15h 17m

2 stops

10:25 am - 11:08 pm

LGW

ABE

17h 43m

2 stops

$2,753Multiple Airlines

Fri, Jul 17 - Fri, Jul 24

1:08 pm - 9:25 am

ABE

LGW

15h 17m

2 stops

10:25 am - 11:08 pm

LGW

ABE

17h 43m

2 stops

$3,449Multiple Airlines

Fri, Jul 17 - Fri, Jul 24

1:08 pm - 8:50 am

ABE

LCY

14h 42m

2 stops

10:00 am - 11:08 pm

LCY

ABE

18h 08m

2 stops

$10,175KLM

Fri, Jul 17 - Fri, Jul 24

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Delta flights from Allentown to London

Our best Delta deals on Allentown to London flight tickets

Delta

Oct 7

ABE5:40 pmAllentown-Bethlehem

14h 35m

1 stop

LHR1:15 pmLondon Heathrow

Oct 13

LHR8:40 amLondon Heathrow

19h 06m

2 stops

ABE10:46 pmAllentown-Bethlehem

$875

Delta

Oct 7

ABE6:30 amAllentown-Bethlehem

20h 25m

2 stops

LHR7:55 amLondon Heathrow

Oct 13

LHR9:55 amLondon Heathrow

17h 51m

2 stops

ABE10:46 pmAllentown-Bethlehem

$880

Delta

Oct 7

ABE1:00 pmAllentown-Bethlehem

12h 25m

1 stop

LHR6:25 amLondon Heathrow

Oct 13

LHR1:25 pmLondon Heathrow

14h 21m

1 stop

ABE10:46 pmAllentown-Bethlehem

$904

United Airlines flights from Allentown to London

Our best United Airlines deals on Allentown to London flight tickets

United Airlines

Nov 4

ABE10:38 amAllentown-Bethlehem

20h 22m

1 stop

LHR12:00 pmLondon Heathrow

Nov 6

LHR6:50 amLondon Heathrow

19h 22m

2 stops

ABE9:12 pmAllentown-Bethlehem

$759

United Airlines

Nov 4

ABE10:38 amAllentown-Bethlehem

19h 27m

2 stops

LHR11:05 amLondon Heathrow

Nov 6

LHR6:50 amLondon Heathrow

15h 06m

2 stops

ABE4:56 pmAllentown-Bethlehem

$763

United Airlines

Nov 4

ABE2:30 pmAllentown-Bethlehem

15h 20m

2 stops

LHR10:50 amLondon Heathrow

Nov 6

LHR6:50 amLondon Heathrow

15h 06m

2 stops

ABE4:56 pmAllentown-Bethlehem

$764

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Wed 11/4

10:38 am-12:00 pm

1 stop20h 22m

London Heathrow

Fri 11/6

6:50 am-9:12 pm

2 stops19h 22m

$759

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Wed 11/4

10:38 am-11:05 am

2 stops19h 27m

London Heathrow

Fri 11/6

6:50 am-4:56 pm

2 stops15h 06m

$763

Quickest round-trip

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Wed 11/4

2:30 pm-10:50 am

2 stops15h 20m

London Heathrow

Fri 11/6

6:50 am-4:56 pm

2 stops15h 06m

$764

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Wed 10/7

5:40 pm-1:15 pm

1 stop14h 35m

London Heathrow

Tue 10/13

8:40 am-10:46 pm

2 stops19h 06m

$875

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Wed 10/7

6:30 am-7:55 am

2 stops20h 25m

London Heathrow

Tue 10/13

9:55 am-10:46 pm

2 stops17h 51m

$880

AllentownLondon

ABE - LGW

ABELGW

Allentown-Bethlehem

Sat 10/10

1:00 pm-9:20 am

2 stops15h 20m

London Gatwick

Tue 10/13

10:35 am-10:46 pm

2 stops17h 11m

$1,399

AllentownLondon

ABE - LGW

ABELGW

Allentown-Bethlehem

Sat 10/10

1:00 pm-9:20 am

2 stops15h 20m

London Gatwick

Tue 10/13

10:35 am-10:46 pm

2 stops17h 11m

$1,687

AllentownLondon

ABE - LGW

ABELGW

Allentown-Bethlehem

Fri 7/17

1:08 pm-9:25 am

2 stops15h 17m

London Gatwick

Fri 7/24

10:25 am-11:08 pm

2 stops17h 43m

$2,753

AllentownLondon

ABE - LGW

ABELGW

Allentown-Bethlehem

Fri 7/17

1:08 pm-9:25 am

2 stops15h 17m

London Gatwick

Fri 7/24

10:25 am-11:08 pm

2 stops17h 43m

$3,449

AllentownLondon

ABE - LCY

ABELCY

Allentown-Bethlehem

Fri 7/17

1:08 pm-8:50 am

2 stops14h 42m

London City

Fri 7/24

10:00 am-11:08 pm

2 stops18h 08m

$10,175

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Allentown to London

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

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

Delta and United Airlines are the most popular carriers operating from Allentown-Bethlehem to London

What airlines fly to London?

United Airlines, British Airways and American Airlines are the top three most popular airlines that fly to London from Allentown according to our data. United Airlines is the first choice among our users, with 51% of people opting to fly with this airline when traveling to London. Keep in mind that there are 17 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.

When to book flights from Allentown to London

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

Estimated round-trip price

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

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

Fastest flight time	13h 19m
Direct flights	None

The fastest flight from Allentown to London takes 13h 19m

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

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Frequently asked questions about flying from Allentown to London

How far is Allentown-Bethlehem to London by plane?
There are 3523.4 mi between Allentown-Bethlehem and London. In terms of flight time, this usually takes a little over 13h 19m.
When did momondo last update prices for flights from Allentown-Bethlehem Airport to London?
Prices for flights from Allentown-Bethlehem Airport to London are refreshed on a daily basis.
How old do you have to be to fly from Allentown-Bethlehem Airport to London?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Allentown-Bethlehem Airport to London.
What documentation or ID do you need to fly to London?
The required travel and health documents for your London trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at London. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Hounslow

Gatwick

Milton Keynes

Luton

Dover

Hayes

Crawley

Croydon

Wembley

Stansted

Harrow

Slough

Brentwood

Watford

Cobham

Guildford

Folkestone

Uxbridge

Romford

Chelmsford

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Allentown to London for you.

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

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

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

momondo helps you find the best flight between Allentown and London by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Yes momondo offers price alerts on flights to London from Allentown. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your London trip

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Cheap flights from Allentown to London from $368

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Allentown to London departing on 8/24. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Delta flights from Allentown to London

Our best Delta deals on Allentown to London flight tickets

United Airlines flights from Allentown to London

Our best United Airlines deals on Allentown to London flight tickets

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How to get the cheapest flight ticket from Allentown to London

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

What airlines fly to London?

When to book flights from Allentown to London

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

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

Fastest flight time

Direct flights

Frequently asked questions about flying from Allentown to London

Traveling to a place near London?

Why use momondo?

An easier way to manage your London trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United Kingdom

Fly into one of these airports located in London

Airports listed have a maximum distance of 35.6 mi from London

Fly your favorite airline to London

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

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List of cabin classes available on flights landing in London. Availability may vary depending on flight origin and airline.

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Popular flights according to clicks in the last 7 days on momondo

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According to popular flight searches on momondo this year

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