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Cheap flights from Allentown to London from $329

1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Allentown to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
5:36 pm - 12:00 pmABE  Allentown-Bethlehem-LHR London Heathrow
13h 24m1 stop Chicago O'Hare Intl
United Airlines Logo
11:05 am - 9:02 pmLHR  London Heathrow-ABE Allentown-Bethlehem
38h 57m2 stops Brussels Bruxelles-National Chicago O'Hare Intl
$736United Airlines
Mon, Nov 16 - Wed, Nov 18
United Airlines Logo
5:36 pm - 9:20 pmABE  Allentown-Bethlehem-LHR London Heathrow
22h 44m2 stops Chicago O'Hare Intl Newark
United Airlines Logo
6:50 am - 4:56 pmLHR  London Heathrow-ABE Allentown-Bethlehem
15h 06m2 stops Brussels Bruxelles-National Chicago O'Hare Intl
$740United Airlines
Mon, Nov 16 - Wed, Nov 18
United Airlines Logo
5:36 pm - 9:20 pmABE  Allentown-Bethlehem-LHR London Heathrow
22h 44m2 stops Chicago O'Hare Intl Newark
United Airlines Logo
6:50 am - 4:56 pmLHR  London Heathrow-ABE Allentown-Bethlehem
15h 06m2 stops Brussels Bruxelles-National Chicago O'Hare Intl
$741United Airlines
Mon, Nov 16 - Wed, Nov 18
United Airlines Logo
5:36 pm - 12:00 pmABE  Allentown-Bethlehem-LHR London Heathrow
13h 24m1 stop Chicago O'Hare Intl
United Airlines Logo
11:05 am - 9:02 pmLHR  London Heathrow-ABE Allentown-Bethlehem
38h 57m2 stops Brussels Bruxelles-National Chicago O'Hare Intl
$744United Airlines
Mon, Nov 16 - Wed, Nov 18
United Airlines Logo
5:36 pm - 9:20 pmABE  Allentown-Bethlehem-LHR London Heathrow
22h 44m2 stops Chicago O'Hare Intl Newark
United Airlines Logo
6:50 am - 4:56 pmLHR  London Heathrow-ABE Allentown-Bethlehem
15h 06m2 stops Brussels Bruxelles-National Chicago O'Hare Intl
$748United Airlines
Mon, Nov 16 - Wed, Nov 18
United Airlines Logo
5:36 pm - 12:00 pmABE  Allentown-Bethlehem-LHR London Heathrow
14h 24m1 stop Chicago O'Hare Intl
United Airlines Logo
9:00 am - 1:26 pmLHR  London Heathrow-ABE Allentown-Bethlehem
32h 26m2 stops Zurich Chicago O'Hare Intl
$751United Airlines
Mon, Mar 15 - Wed, Mar 17
United Airlines Logo
5:36 pm - 12:00 pmABE  Allentown-Bethlehem-LHR London Heathrow
14h 24m1 stop Chicago O'Hare Intl
United Airlines Logo
6:50 am - 9:56 amLHR  London Heathrow-ABE Allentown-Bethlehem
31h 06m2 stops Brussels Bruxelles-National Chicago O'Hare Intl
$757United Airlines
Wed, Mar 17 - Fri, Mar 19
United Airlines Logo
5:36 pm - 7:55 amABE  Allentown-Bethlehem-LHR London Heathrow
34h 19m1 stop Chicago O'Hare Intl
United Airlines Logo
6:50 am - 1:26 pmLHR  London Heathrow-ABE Allentown-Bethlehem
34h 36m2 stops Brussels Bruxelles-National Chicago O'Hare Intl
$763United Airlines
Mon, Mar 15 - Thu, Mar 18
United Airlines Logo
10:39 am - 1:00 pmABE  Allentown-Bethlehem-LHR London Heathrow
22h 21m2 stops Chicago O'Hare Intl Zurich
United Airlines Logo
12:05 pm - 9:56 amLHR  London Heathrow-ABE Allentown-Bethlehem
25h 51m2 stops Washington, D.C. Dulles Intl Chicago O'Hare Intl
$774United Airlines
Mon, Mar 15 - Wed, Mar 17
United Airlines Logo
5:43 pm - 8:55 amABE  Allentown-Bethlehem-LHR London Heathrow
34h 12m1 stop Chicago O'Hare Intl
United Airlines Logo
7:30 am - 9:02 pmLHR  London Heathrow-ABE Allentown-Bethlehem
17h 32m2 stops Frankfurt am Main Chicago O'Hare Intl
$821United Airlines
Fri, Oct 23 - Mon, Oct 26

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Delta flights from Allentown to London Heathrow Airport

Our best Delta deals on Allentown to London Heathrow Airport flight tickets
Delta
Nov 29
ABE6:30 amAllentown-Bethlehem
21h 30m
1 stop
LHR9:00 amLondon Heathrow
Dec 9
LHR8:40 amLondon Heathrow
18h 47m
2 stops
ABE10:27 pmAllentown-Bethlehem
$862
Delta
Dec 3
ABE5:58 pmAllentown-Bethlehem
12h 42m
1 stop
LHR11:40 amLondon Heathrow
Dec 7
LHR6:30 amLondon Heathrow
15h 43m
2 stops
ABE5:13 pmAllentown-Bethlehem
$864
Delta
Dec 1
ABE12:50 pmAllentown-Bethlehem
18h 45m
2 stops
LHR12:35 pmLondon Heathrow
Dec 8
LHR6:30 amLondon Heathrow
15h 43m
2 stops
ABE5:13 pmAllentown-Bethlehem
$867

United Airlines flights from Allentown to London Heathrow Airport

Our best United Airlines deals on Allentown to London Heathrow Airport flight tickets
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
$736
United Airlines
Nov 16
ABE5:36 pmAllentown-Bethlehem
22h 44m
2 stops
LHR9:20 pmLondon Heathrow
Nov 18
LHR6:50 amLondon Heathrow
15h 06m
2 stops
ABE4:56 pmAllentown-Bethlehem
$740
United Airlines
Nov 16
ABE5:36 pmAllentown-Bethlehem
22h 44m
2 stops
LHR9:20 pmLondon Heathrow
Nov 18
LHR6:50 amLondon Heathrow
15h 06m
2 stops
ABE4:56 pmAllentown-Bethlehem
$741

momondo Fare Finder

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

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Price

Cheapest round-trip

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

$736
Quickest round-trip

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

$740

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

$741

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

$744

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

$748

AllentownLondon

ABE Allentown-Bethlehem - LHR London Heathrow

ABELHR

Allentown-Bethlehem

Mon 3/15

5:36 pm-12:00 pm

1 stop14h 24m

London Heathrow

Wed 3/17

9:00 am-1:26 pm

2 stops32h 26m

$751

AllentownLondon

ABE Allentown-Bethlehem - LHR London Heathrow

ABELHR

Allentown-Bethlehem

Wed 3/17

5:36 pm-12:00 pm

1 stop14h 24m

London Heathrow

Fri 3/19

6:50 am-9:56 am

2 stops31h 06m

$757

AllentownLondon

ABE Allentown-Bethlehem - LHR London Heathrow

ABELHR

Allentown-Bethlehem

Mon 3/15

5:36 pm-7:55 am

1 stop34h 19m

London Heathrow

Thu 3/18

6:50 am-1:26 pm

2 stops34h 36m

$763

AllentownLondon

ABE Allentown-Bethlehem - LHR London Heathrow

ABELHR

Allentown-Bethlehem

Mon 3/15

10:39 am-1:00 pm

2 stops22h 21m

London Heathrow

Wed 3/17

12:05 pm-9:56 am

2 stops25h 51m

$774

AllentownLondon

ABE Allentown-Bethlehem - LHR London Heathrow

ABELHR

Allentown-Bethlehem

Fri 10/23

5:43 pm-8:55 am

1 stop34h 12m

London Heathrow

Mon 10/26

7:30 am-9:02 pm

2 stops17h 32m

$821

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 12 resultsSorted by cheapest first
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See travel insights to London from

How to get the cheapest flight ticket from Allentown to London Heathrow Airport

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 Heathrow?

United Airlines and Delta are the most popular carriers operating from Allentown-Bethlehem to London Heathrow

What airlines fly to London Heathrow Airport?

United Airlines, British Airways and American Airlines are the top three most popular airlines that fly to London Heathrow Airport 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 Heathrow Airport. Keep in mind that there are 17 different airlines that fly to London Heathrow Airport on a routine basis, so you have a few additional options to choose from.

When to book flights from Allentown to London Heathrow Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Allentown to London Heathrow Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Allentown to London Heathrow Airport (ABE to LHR) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Allentown to London Heathrow Airport

Best Price Found

$329

Fastest flight time

13h 24m

Direct flights

None
The best one-way flight to London Heathrow Airport from Allentown in the past 72 hours is $329. The best round-trip flight deal from Allentown to London Heathrow Airport found on momondo in the last 72 hours is $736.
The fastest flight from Allentown to London Heathrow Airport takes 13h 24m
There are no direct flights from Allentown to London Heathrow Airport. There are no popular flight routes from Allentown to London Heathrow Airport.
Search flight deals

Frequently asked questions about flying from Allentown to London Heathrow Airport

  • How far is Allentown-Bethlehem to London Heathrow by plane?

    The distance between Allentown-Bethlehem and London Heathrow is about 3510.6 mi. In terms of flight time, this usually takes a little over 13h 24m.

  • When did momondo last update prices for flights from Allentown-Bethlehem Airport to London Heathrow Airport?

    Prices for flights from Allentown-Bethlehem Airport to London Heathrow Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Allentown-Bethlehem Airport to London Heathrow Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Allentown-Bethlehem Airport to London Heathrow Airport.

  • What documentation or ID do you need to fly to London Heathrow Airport?

    The travel and health documents required for your trip to London Heathrow Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at London Heathrow Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Hounslow
Gatwick
Croydon
Hayes
Luton
Stratford-upon-Avon
Dover
Wembley
Milton Keynes
Kingston upon Thames
Richmond
Stansted
Watford
Harrow
Cobham
Worthing
Eastbourne
Slough
Hook
Ilford

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?

All flight searches from Allentown to London on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Allentown to London?

Once all potential Allentown to London flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Allentown to London right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Allentown to London flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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