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.

$426 Cheap Flights from Allentown to London in 2026

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Cheap round-trip flights

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2:30 pm - 7:40 pm

ABE

LHR

24h 10m

2 stops

6:55 am - 9:12 pm

LHR

ABE

19h 17m

2 stops

$678United Airlines

Tue, Sep 1 - Tue, Sep 8

6:15 am - 8:35 am

ABE

LHR

21h 20m

2 stops

7:25 am - 10:06 am

LHR

ABE

31h 41m

2 stops

$726United Airlines

Wed, Aug 19 - Sun, Aug 23

2:25 pm - 9:00 am

ABE

LHR

13h 35m

1 stop

6:50 am - 8:58 pm

LHR

ABE

19h 08m

2 stops

$730United Airlines

Tue, May 12 - Wed, May 20

10:35 am - 6:55 am

ABE

LHR

15h 20m

2 stops

6:50 am - 5:00 pm

LHR

ABE

15h 10m

2 stops

$735United Airlines

Tue, May 12 - Tue, May 19

6:15 am - 8:30 am

ABE

LHR

21h 15m

1 stop

6:50 am - 9:48 am

LHR

ABE

31h 58m

2 stops

$736United Airlines

Wed, Apr 1 - Wed, Apr 8

6:15 am - 9:00 am

ABE

LHR

21h 45m

1 stop

2:05 pm - 1:48 pm

LHR

ABE

28h 43m

2 stops

$739United Airlines

Tue, May 12 - Fri, May 22

12:57 pm - 9:25 am

ABE

LGW

15h 28m

2 stops

10:25 am - 10:52 pm

LGW

ABE

17h 27m

2 stops

$1,200Delta

Wed, Apr 1 - Wed, Apr 8

10:00 am - 10:00 am

ABE

LGW

19h 00m

1 stop

1:05 pm - 3:40 pm

LGW

ABE

31h 35m

2 stops

$1,209Multiple Airlines

Tue, Sep 1 - Tue, Sep 8

5:59 pm - 4:40 pm

ABE

LCY

17h 41m

2 stops

9:20 am - 11:00 pm

LCY

ABE

18h 40m

2 stops

$1,312Delta

Tue, Apr 21 - Tue, Apr 28

12:51 pm - 9:20 am

ABE

LGW

15h 29m

2 stops

10:25 am - 10:52 pm

LGW

ABE

17h 27m

2 stops

$1,585Delta

Sat, Apr 4 - Fri, Apr 10

KLM flights from Allentown to London

Our best KLM deals on Allentown to London flight tickets

KLM

Apr 21

ABE12:53 pmAllentown-Bethlehem

12h 32m

1 stop

LHR6:25 amLondon Heathrow

Apr 28

LHR9:20 amLondon Heathrow

18h 40m

1 stop

ABE11:00 pmAllentown-Bethlehem

$806

KLM

May 7

ABE6:27 amAllentown-Bethlehem

18h 58m

1 stop

LHR6:25 amLondon Heathrow

May 14

LHR9:20 amLondon Heathrow

13h 08m

1 stop

ABE5:28 pmAllentown-Bethlehem

$847

KLM

Mar 11

ABE6:32 amAllentown-Bethlehem

21h 18m

1 stop

LHR7:50 amLondon Heathrow

Mar 18

LHR8:55 amLondon Heathrow

18h 01m

1 stop

ABE10:56 pmAllentown-Bethlehem

$893

United Airlines flights from Allentown to London

Our best United Airlines deals on Allentown to London flight tickets

United Airlines

Sep 1

ABE2:30 pmAllentown-Bethlehem

24h 10m

2 stops

LHR7:40 pmLondon Heathrow

Sep 8

LHR6:55 amLondon Heathrow

19h 17m

2 stops

ABE9:12 pmAllentown-Bethlehem

$678

United Airlines

Aug 19

ABE6:15 amAllentown-Bethlehem

21h 20m

2 stops

LHR8:35 amLondon Heathrow

Aug 23

LHR7:25 amLondon Heathrow

31h 41m

2 stops

ABE10:06 amAllentown-Bethlehem

$726

United Airlines

May 12

ABE2:25 pmAllentown-Bethlehem

13h 35m

1 stop

LHR9:00 amLondon Heathrow

May 20

LHR6:50 amLondon Heathrow

19h 08m

2 stops

ABE8:58 pmAllentown-Bethlehem

$730

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Tue 9/1

2:30 pm-7:40 pm

2 stops24h 10m

London Heathrow

Tue 9/8

6:55 am-9:12 pm

2 stops19h 17m

$678

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Wed 8/19

6:15 am-8:35 am

2 stops21h 20m

London Heathrow

Sun 8/23

7:25 am-10:06 am

2 stops31h 41m

$726

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Tue 5/12

2:25 pm-9:00 am

1 stop13h 35m

London Heathrow

Wed 5/20

6:50 am-8:58 pm

2 stops19h 08m

$730

Quickest round-trip

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Tue 5/12

10:35 am-6:55 am

2 stops15h 20m

London Heathrow

Tue 5/19

6:50 am-5:00 pm

2 stops15h 10m

$735

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Wed 4/1

6:15 am-8:30 am

1 stop21h 15m

London Heathrow

Wed 4/8

6:50 am-9:48 am

2 stops31h 58m

$736

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Tue 5/12

6:15 am-9:00 am

1 stop21h 45m

London Heathrow

Fri 5/22

2:05 pm-1:48 pm

2 stops28h 43m

$739

AllentownLondon

ABE - LGW

ABELGW

Allentown-Bethlehem

Wed 4/1

12:57 pm-9:25 am

2 stops15h 28m

London Gatwick

Wed 4/8

10:25 am-10:52 pm

2 stops17h 27m

$1,200

AllentownLondon

ABE - LGW

ABELGW

Allentown-Bethlehem

Tue 9/1

10:00 am-10:00 am

1 stop19h 00m

London Gatwick

Tue 9/8

1:05 pm-3:40 pm

2 stops31h 35m

$1,209

AllentownLondon

ABE - LCY

ABELCY

Allentown-Bethlehem

Tue 4/21

5:59 pm-4:40 pm

2 stops17h 41m

London City

Tue 4/28

9:20 am-11:00 pm

2 stops18h 40m

$1,312

AllentownLondon

ABE - LGW

ABELGW

Allentown-Bethlehem

Sat 4/4

12:51 pm-9:20 am

2 stops15h 29m

London Gatwick

Fri 4/10

10:25 am-10:52 pm

2 stops17h 27m

$1,585

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?

United Airlines and Delta 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 42% of people opting to fly with this airline when traveling to London. Keep in mind that there are 18 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	12h 26m
Direct flights	None

The fastest flight from Allentown to London takes 12h 26m

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

Search flight deals

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 12h 26m.
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.

Gatwick

Hounslow

Milton Keynes

Luton

Dover

Slough

Crawley

Hayes

Wembley

Dartford

Croydon

Brentwood

Harrow

Watford

Guildford

Stansted

Cobham

Folkestone

Romford

Richmond

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 $426

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 4/5. 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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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

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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

Cabin classes currently available on flights to London

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

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According to popular flight searches on momondo this year

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