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 for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Allentown-Bethlehem Airport to London.

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

The travel and health documents you'll need for your trip to London may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

£248 Cheap Flights from Allentown to London in 2026

1 adult

0 bags

Voted winner of Europe's Best Travel App 2023

Save money when you book flights with momondo

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Allentown to London

Round-trip

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

13:00 - 06:25

ABE

LHR

12h 25m

1 stop

08:55 - 22:56

LHR

ABE

19h 01m

2 stops

£539Air France

Tue, 25 Aug - Sun, 30 Aug

18:15 - 11:20

ABE

LHR

12h 05m

1 stop

09:20 - 17:28

LHR

ABE

13h 08m

1 stop

£543Delta

Tue, 12 May - Mon, 18 May

13:00 - 06:25

ABE

LHR

12h 25m

1 stop

09:20 - 17:17

LHR

ABE

12h 57m

1 stop

£544Delta

Fri, 21 Aug - Thu, 27 Aug

13:00 - 06:25

ABE

LHR

12h 25m

1 stop

10:45 - 22:56

LHR

ABE

17h 11m

2 stops

£547Delta

Fri, 21 Aug - Tue, 1 Sep

06:30 - 13:15

ABE

LHR

25h 45m

1 stop

11:15 - 22:56

LHR

ABE

16h 41m

1 stop

£548KLM

Tue, 15 Sep - Tue, 22 Sep

14:30 - 08:30

ABE

LHR

13h 00m

1 stop

06:50 - 21:12

LHR

ABE

19h 22m

2 stops

£561United Airlines

Mon, 24 Aug - Wed, 26 Aug

06:15 - 10:00

ABE

LHR

22h 45m

2 stops

06:50 - 21:12

LHR

ABE

19h 22m

2 stops

£564United Airlines

Wed, 26 Aug - Fri, 28 Aug

17:36 - 08:30

ABE

LHR

33h 54m

1 stop

06:50 - 21:12

LHR

ABE

19h 22m

2 stops

£565United Airlines

Sun, 23 Aug - Wed, 26 Aug

06:30 - 07:40

ABE

LHR

20h 10m

2 stops

11:15 - 22:56

LHR

ABE

16h 41m

1 stop

£567Delta

Tue, 15 Sep - Tue, 22 Sep

06:30 - 07:40

ABE

LHR

20h 10m

2 stops

10:45 - 22:56

LHR

ABE

17h 11m

2 stops

£570Delta

Tue, 15 Sep - Tue, 22 Sep

KLM flights from Allentown to London

Our best KLM deals on Allentown to London flight tickets

KLM

15 Sept

ABE06:30Allentown-Bethlehem

25h 45m

1 stop

LHR13:15London Heathrow

22 Sept

LHR11:15London Heathrow

16h 41m

1 stop

ABE22:56Allentown-Bethlehem

£548

KLM

13 May

ABE12:59Allentown-Bethlehem

12h 26m

1 stop

LHR06:25London Heathrow

18 May

LHR09:55London Heathrow

17h 23m

2 stops

ABE22:18Allentown-Bethlehem

£635

KLM

25 May

ABE18:15Allentown-Bethlehem

12h 05m

1 stop

LHR11:20London Heathrow

5 Jun

LHR09:55London Heathrow

17h 23m

2 stops

ABE22:18Allentown-Bethlehem

£668

Delta flights from Allentown to London

Our best Delta deals on Allentown to London flight tickets

Delta

30 Apr

ABE12:53Allentown-Bethlehem

12h 32m

1 stop

LHR06:25London Heathrow

6 May

LHR09:55London Heathrow

18h 05m

2 stops

ABE23:00Allentown-Bethlehem

£539

Delta

12 May

ABE18:15Allentown-Bethlehem

12h 05m

1 stop

LHR11:20London Heathrow

18 May

LHR09:20London Heathrow

13h 08m

1 stop

ABE17:28Allentown-Bethlehem

£543

Delta

26 Apr

ABE17:59Allentown-Bethlehem

12h 21m

1 stop

LHR11:20London Heathrow

30 Apr

LHR09:20London Heathrow

12h 59m

1 stop

ABE17:19Allentown-Bethlehem

£544

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Tue 25/8

13:00-06:25

1 stop12h 25m

London Heathrow

Sun 30/8

08:55-22:56

2 stops19h 01m

£539

Fastest return journey

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Tue 12/5

18:15-11:20

1 stop12h 05m

London Heathrow

Mon 18/5

09:20-17:28

1 stop13h 08m

£543

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Fri 21/8

13:00-06:25

1 stop12h 25m

London Heathrow

Thu 27/8

09:20-17:17

1 stop12h 57m

£544

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Fri 21/8

13:00-06:25

1 stop12h 25m

London Heathrow

Tue 1/9

10:45-22:56

2 stops17h 11m

£547

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Tue 15/9

06:30-13:15

1 stop25h 45m

London Heathrow

Tue 22/9

11:15-22:56

1 stop16h 41m

£548

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Mon 24/8

14:30-08:30

1 stop13h 00m

London Heathrow

Wed 26/8

06:50-21:12

2 stops19h 22m

£561

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Wed 26/8

06:15-10:00

2 stops22h 45m

London Heathrow

Fri 28/8

06:50-21:12

2 stops19h 22m

£564

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Sun 23/8

17:36-08:30

1 stop33h 54m

London Heathrow

Wed 26/8

06:50-21:12

2 stops19h 22m

£565

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Tue 15/9

06:30-07:40

2 stops20h 10m

London Heathrow

Tue 22/9

11:15-22:56

1 stop16h 41m

£567

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Tue 15/9

06:30-07:40

2 stops20h 10m

London Heathrow

Tue 22/9

10:45-22:56

2 stops17h 11m

£570

Flights are sorted by cheapest return 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 and Delta are the most popular carriers operating from Allentown-Bethlehem to London

Which airlines fly to London?

United Airlines, British Airways and Lufthansa 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 43% of people opting to fly with this airline when travelling to London. Keep in mind that there are 6 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 return 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 05m
Direct flights	None

The fastest flight from Allentown to London takes 12h 05m

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?
The distance between Allentown-Bethlehem and London is about 3523.4 mi. Flights usually cover this in 12h 05m, depending on flying conditions and air traffic around both airports.
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 for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Allentown-Bethlehem Airport to London.
What documentation or ID do you need to fly to London?
The travel and health documents you'll need for your trip to London may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Eastbourne

Milton Keynes

Luton

Gatwick

Slough

Maidstone

Wembley

Southend-on-Sea

Ipswich

Canterbury

Ilford

Guildford

Hayes

Dover

Chelmsford

Folkestone

Chichester

Bedford

Ramsgate

Harlow

Why use momondo?

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

Finding the right flight to London from Allentown is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to London quick and easy, saving you time and money.

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

Yes. momondo allows you to filter the results for Allentown to London flights to just show those with flexible booking policies.

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?

Of course. momondo tracks the price of Allentown to London flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your London trip

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

Start using Trips

Find my bookings

Get notified when prices go down

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

1 adult

Tue 26/5

Tue 2/6

Email me momondo's favourite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United Kingdom

Nearby airports

Airlines

Cabin classes

Other United Kingdom destinations

Complete your trip

Feeling lucky

Fly into one of these airports located in London

London City Airport

London Gatwick Airport

London Heathrow Airport

London Luton Airport

London Southend Airport

London Stansted Airport

Cheap flights from Allentown to London from £248

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 15/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names, great deals

Big names, great deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Allentown to London

Cheap return flights

Cheap one-way flights

Cheap last-minute flights

KLM flights from Allentown to London

Our best KLM deals on Allentown to London flight tickets

Delta flights from Allentown to London

Our best Delta deals on Allentown to London flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Allentown to London that are best for you.

See travel insights to London from

How to get the cheapest flight ticket from Allentown to London

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

Which 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

Travelling to a place near London?

Why use momondo?

An easier way to manage your London trip

We make it super easy to schedule, organise 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 favourite 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

Complete your trip to London

Explore popular destinations other users love

According to popular flight searches on momondo this year