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.

$329 Cheap Flights from Allentown to London in 2026/27

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

9:00 am - 9:36 amLHR London Heathrow-ABE Allentown-Bethlehem

29h 36m2 stops Zurich Chicago O'Hare Intl

$756United Airlines

Tue, Mar 9 - Thu, Mar 11

10:39 am - 7:55 amABE Allentown-Bethlehem-LHR London Heathrow

16h 16m1 stop Chicago O'Hare Intl

6:50 am - 9:04 pmLHR London Heathrow-ABE Allentown-Bethlehem

19h 14m2 stops Brussels Bruxelles-National Chicago O'Hare Intl

$757United Airlines

Wed, Mar 10 - Fri, Mar 12

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

13h 24m1 stop Chicago O'Hare Intl

11:05 am - 9:02 pmLHR London Heathrow-ABE Allentown-Bethlehem

38h 57m2 stops Brussels Bruxelles-National Chicago O'Hare Intl

$759United Airlines

Mon, Nov 16 - Wed, Nov 18

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

13h 24m1 stop Chicago O'Hare Intl

11:05 am - 9:02 pmLHR London Heathrow-ABE Allentown-Bethlehem

38h 57m2 stops Brussels Bruxelles-National Chicago O'Hare Intl

$761United Airlines

Mon, Nov 16 - Wed, Nov 18

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

33h 19m1 stop Chicago O'Hare Intl

6:50 am - 5:02 pmLHR London Heathrow-ABE Allentown-Bethlehem

15h 12m2 stops Brussels Bruxelles-National Chicago O'Hare Intl

$762United Airlines

Mon, Mar 8 - Thu, Mar 11

5:36 pm - 9:20 pmABE Allentown-Bethlehem-LHR London Heathrow

22h 44m2 stops Chicago O'Hare Intl Newark

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

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

$764United Airlines

Mon, Nov 16 - Wed, Nov 18

5:36 pm - 9:20 pmABE Allentown-Bethlehem-LHR London Heathrow

22h 44m2 stops Chicago O'Hare Intl Newark

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

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

$766United Airlines

Mon, Nov 16 - Wed, Nov 18

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

13h 24m1 stop Chicago O'Hare Intl

11:05 am - 9:02 pmLHR London Heathrow-ABE Allentown-Bethlehem

38h 57m2 stops Brussels Bruxelles-National Chicago O'Hare Intl

$767United Airlines

Mon, Nov 16 - Wed, Nov 18

6:15 am - 1:00 pmABE Allentown-Bethlehem-LHR London Heathrow

25h 45m2 stops Chicago O'Hare Intl Zurich

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

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

$769United Airlines

Sun, Nov 8 - Tue, Nov 10

5:36 pm - 9:20 pmABE Allentown-Bethlehem-LHR London Heathrow

22h 44m2 stops Chicago O'Hare Intl Newark

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

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

$771United Airlines

Mon, Nov 16 - Wed, Nov 18

Cheap last minute flights

Enter your travel dates to find the best prices.

6:03 pm - 11:20 amABE Allentown-Bethlehem-LHR London Heathrow

12h 17m1 stop Atlanta Hartsfield-Jackson

11:45 am - 12:05 pmLHR London Heathrow-ABE Allentown-Bethlehem

28h 20m2 stops Amsterdam Schiphol Atlanta Hartsfield-Jackson

$881Delta

Thu, Oct 22 - Wed, Oct 28

6:39 am - 7:10 amABE Allentown-Bethlehem-LHR London Heathrow

19h 31m2 stops Atlanta Hartsfield-Jackson Detroit Metropolitan Wayne County

11:45 am - 12:05 pmLHR London Heathrow-ABE Allentown-Bethlehem

28h 20m2 stops Amsterdam Schiphol Atlanta Hartsfield-Jackson

$886Delta

Thu, Oct 22 - Wed, Oct 28

6:39 am - 6:25 amABE Allentown-Bethlehem-LHR London Heathrow

18h 46m1 stop Atlanta Hartsfield-Jackson

12:40 pm - 10:19 pmLHR London Heathrow-ABE Allentown-Bethlehem

13h 39m1 stop Atlanta Hartsfield-Jackson

$895KLM

Thu, Oct 22 - Wed, Oct 28

10:37 am - 11:55 amABE Allentown-Bethlehem-LHR London Heathrow

20h 18m1 stop Chicago O'Hare Intl

11:10 am - 9:35 amLHR London Heathrow-ABE Allentown-Bethlehem

27h 25m2 stops Munich Franz Josef Strauss Chicago O'Hare Intl

$909United Airlines

Thu, Oct 22 - Wed, Feb 3

6:20 am - 6:55 amABE Allentown-Bethlehem-LHR London Heathrow

19h 35m2 stops Chicago O'Hare Intl Washington, D.C. Dulles Intl

6:50 am - 4:45 pmLHR London Heathrow-ABE Allentown-Bethlehem

14h 55m2 stops Brussels Bruxelles-National Chicago O'Hare Intl

$913United Airlines

Thu, Oct 22 - Wed, Feb 3

6:20 am - 6:45 amABE Allentown-Bethlehem-LHR London Heathrow

19h 25m1 stop Chicago O'Hare Intl

10:25 am - 8:51 pmLHR London Heathrow-ABE Allentown-Bethlehem

15h 26m1 stop Chicago O'Hare Intl

$946United Airlines

Thu, Oct 22 - Wed, Feb 3

10:37 am - 11:55 amABE Allentown-Bethlehem-LHR London Heathrow

20h 18m1 stop Chicago O'Hare Intl

11:10 am - 9:35 amLHR London Heathrow-ABE Allentown-Bethlehem

27h 25m2 stops Munich Franz Josef Strauss Chicago O'Hare Intl

$980United Airlines

Thu, Oct 22 - Wed, Feb 3

6:20 am - 10:00 amABE Allentown-Bethlehem-LHR London Heathrow

22h 40m2 stops Chicago O'Hare Intl Montreal Pierre Elliott Trudeau Intl

6:50 am - 8:51 pmLHR London Heathrow-ABE Allentown-Bethlehem

19h 01m2 stops Brussels Bruxelles-National Chicago O'Hare Intl

$983United Airlines

Thu, Oct 22 - Wed, Feb 3

6:20 am - 6:45 amABE Allentown-Bethlehem-LHR London Heathrow

19h 25m1 stop Chicago O'Hare Intl

10:25 am - 8:51 pmLHR London Heathrow-ABE Allentown-Bethlehem

15h 26m1 stop Chicago O'Hare Intl

$1,012United Airlines

Thu, Oct 22 - Wed, Feb 3

1:00 pm - 12:50 pmABE Allentown-Bethlehem-LHR London Heathrow

43h 50m2 stops Atlanta Hartsfield-Jackson Calgary

2:50 pm - 1:21 pmLHR London Heathrow-ABE Allentown-Bethlehem

27h 31m2 stops Calgary Atlanta Hartsfield-Jackson

$12,725WestJet

Mon, Oct 26 - Mon, Nov 2

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Delta flights from Allentown to London

Our best Delta deals on Allentown to London flight tickets

Delta

Dec 2

ABE5:58 pmAllentown-Bethlehem

12h 42m

1 stop

LHR11:40 amLondon Heathrow

Dec 9

LHR6:30 amLondon Heathrow

20h 57m

2 stops

ABE10:27 pmAllentown-Bethlehem

$865

Delta

Nov 10

ABE6:30 amAllentown-Bethlehem

20h 20m

1 stop

LHR7:50 amLondon Heathrow

Nov 17

LHR6:30 amLondon Heathrow

20h 57m

2 stops

ABE10:27 pmAllentown-Bethlehem

$866

Delta

Dec 2

ABE6:39 amAllentown-Bethlehem

19h 26m

2 stops

LHR7:05 amLondon Heathrow

Dec 8

LHR6:30 amLondon Heathrow

20h 57m

2 stops

ABE10:27 pmAllentown-Bethlehem

$869

United Airlines flights from Allentown to London

Our best United Airlines deals on Allentown to London flight tickets

United Airlines

Mar 9

ABE5:36 pmAllentown-Bethlehem

13h 24m

1 stop

LHR12:00 pmLondon Heathrow

Mar 11

LHR9:00 amLondon Heathrow

29h 36m

2 stops

ABE9:36 amAllentown-Bethlehem

$756

United Airlines

Mar 10

ABE10:39 amAllentown-Bethlehem

16h 16m

1 stop

LHR7:55 amLondon Heathrow

Mar 12

LHR6:50 amLondon Heathrow

19h 14m

2 stops

ABE9:04 pmAllentown-Bethlehem

$757

United Airlines

Nov 16

ABE5:36 pmAllentown-Bethlehem

13h 24m

1 stop

LHR12:00 pmLondon Heathrow

Nov 18

LHR11:05 amLondon Heathrow

38h 57m

2 stops

ABE9:02 pmAllentown-Bethlehem

$759

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

AllentownLondon

ABE Allentown-Bethlehem - LHR London Heathrow

ABELHR

Allentown-Bethlehem

Tue 3/9

5:36 pm-12:00 pm

1 stop13h 24m

London Heathrow

Thu 3/11

9:00 am-9:36 am

2 stops29h 36m

$756

Quickest round-trip

AllentownLondon

ABE Allentown-Bethlehem - LHR London Heathrow

ABELHR

Allentown-Bethlehem

Wed 3/10

10:39 am-7:55 am

1 stop16h 16m

London Heathrow

Fri 3/12

6:50 am-9:04 pm

2 stops19h 14m

$757

AllentownLondon

ABE Allentown-Bethlehem - LHR London Heathrow

ABELHR

Allentown-Bethlehem

Mon 11/16

5:36 pm-12:00 pm

1 stop13h 24m

London Heathrow

Wed 11/18

11:05 am-9:02 pm

2 stops38h 57m

$759

AllentownLondon

ABE Allentown-Bethlehem - LHR London Heathrow

ABELHR

Allentown-Bethlehem

Mon 11/16

5:36 pm-12:00 pm

1 stop13h 24m

London Heathrow

Wed 11/18

11:05 am-9:02 pm

2 stops38h 57m

$761

AllentownLondon

ABE Allentown-Bethlehem - LHR London Heathrow

ABELHR

Allentown-Bethlehem

Mon 3/8

5:36 pm-7:55 am

1 stop33h 19m

London Heathrow

Thu 3/11

6:50 am-5:02 pm

2 stops15h 12m

$762

AllentownLondon

ABE Allentown-Bethlehem - LHR London Heathrow

ABELHR

Allentown-Bethlehem

Mon 11/16

5:36 pm-9:20 pm

2 stops22h 44m

London Heathrow

Wed 11/18

6:50 am-4:56 pm

2 stops15h 06m

$764

AllentownLondon

ABE Allentown-Bethlehem - LHR London Heathrow

ABELHR

Allentown-Bethlehem

Mon 11/16

5:36 pm-9:20 pm

2 stops22h 44m

London Heathrow

Wed 11/18

6:50 am-4:56 pm

2 stops15h 06m

$766

AllentownLondon

ABE Allentown-Bethlehem - LHR London Heathrow

ABELHR

Allentown-Bethlehem

Mon 11/16

5:36 pm-12:00 pm

1 stop13h 24m

London Heathrow

Wed 11/18

11:05 am-9:02 pm

2 stops38h 57m

$767

AllentownLondon

ABE Allentown-Bethlehem - LHR London Heathrow

ABELHR

Allentown-Bethlehem

Sun 11/8

6:15 am-1:00 pm

2 stops25h 45m

London Heathrow

Tue 11/10

6:50 am-4:56 pm

2 stops15h 06m

$769

AllentownLondon

ABE Allentown-Bethlehem - LHR London Heathrow

ABELHR

Allentown-Bethlehem

Mon 11/16

5:36 pm-9:20 pm

2 stops22h 44m

London Heathrow

Wed 11/18

6:50 am-4:56 pm

2 stops15h 06m

$771

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, United Airlines, and KLM 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 56% 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

Best Price Found	$329
Fastest flight time	12h 17m
Direct flights	None

The best one-way flight to London from Allentown in the past 72 hours is $329. The best round-trip flight deal from Allentown to London found on momondo in the last 72 hours is $756.

The fastest flight from Allentown to London takes 12h 17m

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 17m.
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

Croydon

Hayes

Milton Keynes

Luton

Stansted

Kingston upon Thames

Dover

Wembley

Richmond

Watford

Crawley

Worthing

Harrow

Slough

Hook

Ilford

Canterbury

Brentford

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 $329

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 2/8. 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

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