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.

$270 Cheap Flights from Allentown to London in 2026

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Find the cheapest flights from Allentown to London

Round-trip

One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

12:53 pm - 6:25 am

ABE

LHR

12h 32m

1 stop

6:30 am - 10:18 pm

LHR

ABE

20h 48m

2 stops

$729Delta

Mi, Mai 6 - Mi, Mai 13

5:59 pm - 1:15 pm

ABE

LHR

14h 16m

1 stop

1:25 pm - 10:18 pm

LHR

ABE

13h 53m

1 stop

$736Delta

Mi, Mai 6 - Fr, Mai 15

5:40 pm - 6:25 am

ABE

LHR

31h 45m

1 stop

1:25 pm - 10:56 pm

LHR

ABE

14h 31m

1 stop

$742Delta

So, Sep 6 - So, Sep 13

6:30 am - 7:40 am

ABE

LHR

20h 10m

2 stops

11:15 am - 10:56 pm

LHR

ABE

16h 41m

1 stop

$767Delta

Di, Sep 15 - Di, Sep 22

6:27 am - 6:25 am

ABE

LHR

18h 58m

1 stop

9:20 am - 10:18 pm

LHR

ABE

17h 58m

1 stop

$769KLM

Di, Mai 12 - So, Mai 17

6:30 am - 7:40 am

ABE

LHR

20h 10m

2 stops

10:45 am - 10:56 pm

LHR

ABE

17h 11m

2 stops

$772Delta

Di, Sep 15 - Di, Sep 22

6:15 pm - 1:15 pm

ABE

LHR

14h 00m

1 stop

5:35 pm - 5:28 pm

LHR

ABE

28h 53m

2 stops

$776Delta

Fr, Mai 8 - So, Mai 10

5:40 pm - 1:15 pm

ABE

LHR

14h 35m

1 stop

1:25 pm - 10:56 pm

LHR

ABE

14h 31m

1 stop

$785Delta

Di, Sep 15 - Mi, Sep 23

5:40 pm - 1:15 pm

ABE

LHR

14h 35m

1 stop

5:35 pm - 5:17 pm

LHR

ABE

28h 42m

2 stops

$794Delta

Sa, Aug 15 - Di, Aug 18

8:30 am - 10:00 am

ABE

LGW

20h 30m

2 stops

2:00 pm - 1:56 pm

LGW

ABE

28h 56m

1 stop

$1,151Multiple Airlines

Mi, Jun 3 - Mi, Jun 10

United Airlines flights from Allentown to London

Our best United Airlines deals on Allentown to London flight tickets

United Airlines

Aug 15

ABE5:36 pmAllentown-Bethlehem

35h 24m

2 stops

LHR10:00 amLondon Heathrow

Aug 18

LHR8:45 amLondon Heathrow

30h 21m

2 stops

ABE10:06 amAllentown-Bethlehem

$873

United Airlines

Sep 1

ABE6:15 amAllentown-Bethlehem

21h 45m

1 stop

LHR9:00 amLondon Heathrow

Sep 8

LHR6:55 amLondon Heathrow

32h 11m

2 stops

ABE10:06 amAllentown-Bethlehem

$896

United Airlines

Sep 1

ABE6:15 amAllentown-Bethlehem

19h 15m

2 stops

LHR6:30 amLondon Heathrow

Sep 8

LHR6:55 amLondon Heathrow

32h 11m

2 stops

ABE10:06 amAllentown-Bethlehem

$900

Delta flights from Allentown to London

Our best Delta deals on Allentown to London flight tickets

Delta

May 6

ABE12:53 pmAllentown-Bethlehem

12h 32m

1 stop

LHR6:25 amLondon Heathrow

May 14

LHR9:55 amLondon Heathrow

17h 23m

2 stops

ABE10:18 pmAllentown-Bethlehem

$729

Delta

May 6

ABE5:59 pmAllentown-Bethlehem

14h 16m

1 stop

LHR1:15 pmLondon Heathrow

May 15

LHR1:25 pmLondon Heathrow

13h 53m

1 stop

ABE10:18 pmAllentown-Bethlehem

$736

Delta

Apr 25

ABE12:53 pmAllentown-Bethlehem

12h 32m

1 stop

LHR6:25 amLondon Heathrow

May 3

LHR12:25 pmLondon Heathrow

15h 35m

2 stops

ABE11:00 pmAllentown-Bethlehem

$740

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Mi 5/6

12:53 pm-6:25 am

1 stop12h 32m

London Heathrow

Mi 5/13

6:30 am-10:18 pm

2 stops20h 48m

$729

Quickest round-trip

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Mi 5/6

5:59 pm-1:15 pm

1 stop14h 16m

London Heathrow

Fr 5/15

1:25 pm-10:18 pm

1 stop13h 53m

$736

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

So 9/6

5:40 pm-6:25 am

1 stop31h 45m

London Heathrow

So 9/13

1:25 pm-10:56 pm

1 stop14h 31m

$742

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Di 9/15

6:30 am-7:40 am

2 stops20h 10m

London Heathrow

Di 9/22

11:15 am-10:56 pm

1 stop16h 41m

$767

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Di 5/12

6:27 am-6:25 am

1 stop18h 58m

London Heathrow

So 5/17

9:20 am-10:18 pm

1 stop17h 58m

$769

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Di 9/15

6:30 am-7:40 am

2 stops20h 10m

London Heathrow

Di 9/22

10:45 am-10:56 pm

2 stops17h 11m

$772

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Fr 5/8

6:15 pm-1:15 pm

1 stop14h 00m

London Heathrow

So 5/10

5:35 pm-5:28 pm

2 stops28h 53m

$776

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Di 9/15

5:40 pm-1:15 pm

1 stop14h 35m

London Heathrow

Mi 9/23

1:25 pm-10:56 pm

1 stop14h 31m

$785

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Sa 8/15

5:40 pm-1:15 pm

1 stop14h 35m

London Heathrow

Di 8/18

5:35 pm-5:17 pm

2 stops28h 42m

$794

AllentownLondon

ABE - LGW

ABELGW

Allentown-Bethlehem

Mi 6/3

8:30 am-10:00 am

2 stops20h 30m

London Gatwick

Mi 6/10

2:00 pm-1:56 pm

1 stop28h 56m

$1,151

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?

KLM, 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 47% 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	12h 21m
Direct flights	None

The fastest flight from Allentown to London takes 12h 21m

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 12h 21m.
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

Dover

Luton

Hayes

Crawley

Slough

Wembley

Stansted

Watford

Croydon

Brentwood

Dartford

Cobham

Folkestone

Guildford

Romford

Harrow

Uxbridge

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 $270

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 5/11. 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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Find info about flight duration, direct flights, and airports for your flight from Allentown to London

Fastest flight time

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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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