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.

$320 Cheap Flights from Allentown to London in 2026

Find the cheapest flights from Allentown to London

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One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

5:36 pm - 12:00 pmABE Allentown-Bethlehem-LHR London Heathrow

13h 24m1 stop Chicago O'Hare Intl

6:50 am - 9:12 pmLHR London Heathrow-ABE Allentown-Bethlehem

19h 22m2 stops Brussels Bruxelles-National Chicago O'Hare Intl

$754United Airlines

Mon, Mar 1 - Wed, Mar 3

5:36 pm - 7:55 amABE Allentown-Bethlehem-LHR London Heathrow

33h 19m1 stop Chicago O'Hare Intl

6:50 am - 9:12 pmLHR London Heathrow-ABE Allentown-Bethlehem

19h 22m2 stops Brussels Bruxelles-National Chicago O'Hare Intl

$759United Airlines

Sun, Feb 21 - Wed, Feb 24

5:36 pm - 7:55 amABE Allentown-Bethlehem-LHR London Heathrow

33h 19m1 stop Chicago O'Hare Intl

6:50 am - 9:56 amLHR London Heathrow-ABE Allentown-Bethlehem

32h 06m2 stops Brussels Bruxelles-National Chicago O'Hare Intl

$765United Airlines

Mon, Mar 1 - Thu, Mar 4

10:37 am - 12:50 pmABE Allentown-Bethlehem-LHR London Heathrow

21h 13m2 stops Chicago O'Hare Intl Frankfurt am Main

8:00 am - 9:12 pmLHR London Heathrow-ABE Allentown-Bethlehem

18h 12m2 stops Newark Chicago O'Hare Intl

$786United Airlines

Mon, Mar 1 - Wed, Mar 3

6:20 am - 9:00 amABE Allentown-Bethlehem-LHR London Heathrow

21h 40m1 stop Chicago O'Hare Intl

6:50 am - 9:02 pmLHR London Heathrow-ABE Allentown-Bethlehem

18h 12m2 stops Brussels Bruxelles-National Chicago O'Hare Intl

$866United Airlines

Tue, Oct 20 - Tue, Oct 27

5:36 pm - 12:00 pmABE Allentown-Bethlehem-LHR London Heathrow

13h 24m1 stop Chicago O'Hare Intl

6:35 am - 4:56 pmLHR London Heathrow-ABE Allentown-Bethlehem

39h 21m2 stops Munich Franz Josef Strauss Chicago O'Hare Intl

$867United Airlines

Mon, Nov 2 - Wed, Nov 11

6:15 am - 6:40 amABE Allentown-Bethlehem-LHR London Heathrow

43h 25m2 stops Chicago O'Hare Intl Washington, D.C. Dulles Intl

6:50 am - 4:56 pmLHR London Heathrow-ABE Allentown-Bethlehem

15h 06m2 stops Brussels Bruxelles-National Chicago O'Hare Intl

$871United Airlines

Sun, Nov 1 - Thu, Nov 12

5:36 pm - 5:55 amABE Allentown-Bethlehem-LHR London Heathrow

32h 19m1 stop Chicago O'Hare Intl

6:50 am - 9:02 pmLHR London Heathrow-ABE Allentown-Bethlehem

19h 12m2 stops Brussels Bruxelles-National Chicago O'Hare Intl

$872United Airlines

Sat, Oct 31 - Fri, Nov 13

5:36 pm - 6:30 amABE Allentown-Bethlehem-LHR London Heathrow

32h 54m2 stops Chicago O'Hare Intl Toronto Pearson Intl

6:50 am - 4:56 pmLHR London Heathrow-ABE Allentown-Bethlehem

15h 06m2 stops Brussels Bruxelles-National Chicago O'Hare Intl

$875United Airlines

Sat, Oct 31 - Thu, Nov 12

10:37 am - 12:00 pmABE Allentown-Bethlehem-LHR London Heathrow

20h 23m1 stop Chicago O'Hare Intl

6:50 am - 9:12 pmLHR London Heathrow-ABE Allentown-Bethlehem

19h 22m2 stops Brussels Bruxelles-National Chicago O'Hare Intl

$878United Airlines

Sun, Feb 21 - Thu, Feb 25

Cheap last minute flights

Enter your travel dates to find the best prices.

10:32 am - 6:55 amABE Allentown-Bethlehem-LHR London Heathrow

15h 23m2 stops Chicago O'Hare Intl Washington, D.C. Dulles Intl

7:25 am - 9:00 pmLHR London Heathrow-ABE Allentown-Bethlehem

18h 35m2 stops Munich Franz Josef Strauss Chicago O'Hare Intl

$932United Airlines

Thu, Sep 10 - Mon, Sep 14

5:36 pm - 11:55 amABE Allentown-Bethlehem-LHR London Heathrow

13h 19m1 stop Chicago O'Hare Intl

7:30 am - 9:00 pmLHR London Heathrow-ABE Allentown-Bethlehem

18h 30m2 stops Frankfurt am Main Chicago O'Hare Intl

$938United Airlines

Thu, Sep 10 - Mon, Sep 14

6:15 am - 6:45 amABE Allentown-Bethlehem-LHR London Heathrow

19h 30m1 stop Chicago O'Hare Intl

11:05 am - 9:00 pmLHR London Heathrow-ABE Allentown-Bethlehem

38h 55m2 stops Brussels Bruxelles-National Chicago O'Hare Intl

$939United Airlines

Fri, Sep 11 - Sun, Sep 13

6:15 am - 6:30 amABE Allentown-Bethlehem-LHR London Heathrow

19h 15m2 stops Chicago O'Hare Intl Montreal Pierre Elliott Trudeau Intl

11:05 am - 9:00 pmLHR London Heathrow-ABE Allentown-Bethlehem

38h 55m2 stops Brussels Bruxelles-National Chicago O'Hare Intl

$943United Airlines

Fri, Sep 11 - Sun, Sep 13

10:32 am - 11:55 amABE Allentown-Bethlehem-LHR London Heathrow

20h 23m1 stop Chicago O'Hare Intl

8:00 am - 9:00 pmLHR London Heathrow-ABE Allentown-Bethlehem

18h 00m1 stop Chicago O'Hare Intl

$956United Airlines

Thu, Sep 10 - Mon, Sep 14

6:15 am - 10:15 amABE Allentown-Bethlehem-LHR London Heathrow

23h 00m2 stops Chicago O'Hare Intl Brussels Bruxelles-National

9:30 am - 9:00 pmLHR London Heathrow-ABE Allentown-Bethlehem

40h 30m2 stops Ottawa Chicago O'Hare Intl

$1,099United Airlines

Sat, Sep 12 - Mon, Sep 14

10:32 am - 11:55 amABE Allentown-Bethlehem-LHR London Heathrow

20h 23m1 stop Chicago O'Hare Intl

3:30 pm - 9:00 pmLHR London Heathrow-ABE Allentown-Bethlehem

34h 30m2 stops Frankfurt am Main Chicago O'Hare Intl

$1,103United Airlines

Sun, Sep 13 - Sat, Sep 19

6:15 am - 10:15 amABE Allentown-Bethlehem-LHR London Heathrow

23h 00m2 stops Chicago O'Hare Intl Brussels Bruxelles-National

8:00 am - 9:00 pmLHR London Heathrow-ABE Allentown-Bethlehem

18h 00m1 stop Chicago O'Hare Intl

$1,123United Airlines

Sat, Sep 12 - Mon, Sep 14

6:08 pm - 1:15 pmABE Allentown-Bethlehem-LHR London Heathrow

14h 07m1 stop Atlanta Hartsfield-Jackson

11:15 am - 10:26 pmLHR London Heathrow-ABE Allentown-Bethlehem

16h 11m1 stop Atlanta Hartsfield-Jackson

$1,260KLM

Fri, Sep 11 - Sun, Sep 13

6:25 am - 1:15 pmABE Allentown-Bethlehem-LHR London Heathrow

25h 50m1 stop Atlanta Hartsfield-Jackson

9:20 am - 10:16 pmLHR London Heathrow-ABE Allentown-Bethlehem

17h 56m1 stop Atlanta Hartsfield-Jackson

$1,287Scandinavian Airlines

Sun, Sep 13 - Sat, Sep 19

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United Airlines flights from Allentown to London

Our best United Airlines deals on Allentown to London flight tickets

United Airlines

Mar 1

ABE5:36 pmAllentown-Bethlehem

13h 24m

1 stop

LHR12:00 pmLondon Heathrow

Mar 3

LHR6:50 amLondon Heathrow

19h 22m

2 stops

ABE9:12 pmAllentown-Bethlehem

$754

United Airlines

Feb 21

ABE5:36 pmAllentown-Bethlehem

33h 19m

1 stop

LHR7:55 amLondon Heathrow

Feb 24

LHR6:50 amLondon Heathrow

19h 22m

2 stops

ABE9:12 pmAllentown-Bethlehem

$759

United Airlines

Mar 1

ABE5:36 pmAllentown-Bethlehem

33h 19m

1 stop

LHR7:55 amLondon Heathrow

Mar 4

LHR6:50 amLondon Heathrow

32h 06m

2 stops

ABE9:56 amAllentown-Bethlehem

$765

KLM flights from Allentown to London

Our best KLM deals on Allentown to London flight tickets

KLM

Nov 1

ABE6:03 pmAllentown-Bethlehem

17h 02m

2 stops

LHR4:05 pmLondon Heathrow

Nov 9

LHR6:30 amLondon Heathrow

20h 57m

2 stops

ABE10:27 pmAllentown-Bethlehem

$936

KLM

Sep 11

ABE6:08 pmAllentown-Bethlehem

14h 07m

1 stop

LHR1:15 pmLondon Heathrow

Sep 13

LHR11:15 amLondon Heathrow

16h 11m

1 stop

ABE10:26 pmAllentown-Bethlehem

$1,260

KLM

Sep 13

ABE12:56 pmAllentown-Bethlehem

15h 04m

2 stops

LHR9:00 amLondon Heathrow

Sep 19

LHR6:30 amLondon Heathrow

20h 46m

2 stops

ABE10:16 pmAllentown-Bethlehem

$2,918

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

AllentownLondon

ABE Allentown-Bethlehem - LHR London Heathrow

ABELHR

Allentown-Bethlehem

Mon 3/1

5:36 pm-12:00 pm

1 stop13h 24m

London Heathrow

Wed 3/3

6:50 am-9:12 pm

2 stops19h 22m

$754

AllentownLondon

ABE Allentown-Bethlehem - LHR London Heathrow

ABELHR

Allentown-Bethlehem

Sun 2/21

5:36 pm-7:55 am

1 stop33h 19m

London Heathrow

Wed 2/24

6:50 am-9:12 pm

2 stops19h 22m

$759

AllentownLondon

ABE Allentown-Bethlehem - LHR London Heathrow

ABELHR

Allentown-Bethlehem

Mon 3/1

5:36 pm-7:55 am

1 stop33h 19m

London Heathrow

Thu 3/4

6:50 am-9:56 am

2 stops32h 06m

$765

AllentownLondon

ABE Allentown-Bethlehem - LHR London Heathrow

ABELHR

Allentown-Bethlehem

Mon 3/1

10:37 am-12:50 pm

2 stops21h 13m

London Heathrow

Wed 3/3

8:00 am-9:12 pm

2 stops18h 12m

$786

AllentownLondon

ABE Allentown-Bethlehem - LHR London Heathrow

ABELHR

Allentown-Bethlehem

Tue 10/20

6:20 am-9:00 am

1 stop21h 40m

London Heathrow

Tue 10/27

6:50 am-9:02 pm

2 stops18h 12m

$866

AllentownLondon

ABE Allentown-Bethlehem - LHR London Heathrow

ABELHR

Allentown-Bethlehem

Mon 11/2

5:36 pm-12:00 pm

1 stop13h 24m

London Heathrow

Wed 11/11

6:35 am-4:56 pm

2 stops39h 21m

$867

AllentownLondon

ABE Allentown-Bethlehem - LHR London Heathrow

ABELHR

Allentown-Bethlehem

Sun 11/1

6:15 am-6:40 am

2 stops43h 25m

London Heathrow

Thu 11/12

6:50 am-4:56 pm

2 stops15h 06m

$871

AllentownLondon

ABE Allentown-Bethlehem - LHR London Heathrow

ABELHR

Allentown-Bethlehem

Sat 10/31

5:36 pm-5:55 am

1 stop32h 19m

London Heathrow

Fri 11/13

6:50 am-9:02 pm

2 stops19h 12m

$872

AllentownLondon

ABE Allentown-Bethlehem - LHR London Heathrow

ABELHR

Allentown-Bethlehem

Sat 10/31

5:36 pm-6:30 am

2 stops32h 54m

London Heathrow

Thu 11/12

6:50 am-4:56 pm

2 stops15h 06m

$875

AllentownLondon

ABE Allentown-Bethlehem - LHR London Heathrow

ABELHR

Allentown-Bethlehem

Sun 2/21

10:37 am-12:00 pm

1 stop20h 23m

London Heathrow

Thu 2/25

6:50 am-9:12 pm

2 stops19h 22m

$878

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, KLM, and SWISS 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 55% of people opting to fly with this airline when traveling to London. Keep in mind that there are 16 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

Best Price Found	$320
Fastest flight time	12h 50m
Direct flights	None

The best one-way flight to London from Allentown in the past 72 hours is $320. The best round-trip flight deal from Allentown to London found on momondo in the last 72 hours is $754.

The fastest flight from Allentown to London takes 12h 50m

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

Search flight deals

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 50m.
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

Hayes

Wembley

Dover

Croydon

Richmond

Stansted

Kingston upon Thames

Harrow

Cobham

Watford

Slough

Eastbourne

Worthing

Hook

Uxbridge

Romford

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

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.

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Cheap flights from Allentown to London from $320

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 10/4. 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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United Airlines flights from Allentown to London

Our best United Airlines deals on Allentown to London flight tickets

KLM flights from Allentown to London

Our best KLM 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

Best Price Found

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

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.

Popular cities in the United Kingdom

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

Fly to other destinations from Allentown

According to popular flight searches on momondo this year

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According to popular flight searches on momondo this year