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Cheap flights from London Heathrow Airport to Allentown from £463

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Heathrow Airport to Allentown departing on 1/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags
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Find the cheapest flights from London Heathrow Airport to Allentown

Cheap return flights

Enter your travel dates to find the best prices.
Finnair Logo
17:05 - 16:35
LHR
-
ABE
28h 30m
2 stops
Finnair Logo
18:20 - 10:50
ABE
-
LHR
11h 30m
1 stop
£691Finnair
Thu, 15 Oct - Thu, 22 Oct
Virgin Atlantic Logo
13:25 - 17:15
LHR
-
ABE
32h 50m
1 stop
Virgin Atlantic Logo
18:00 - 13:15
ABE
-
LHR
14h 15m
1 stop
£725Virgin Atlantic
Thu, 15 Oct - Thu, 22 Oct
Delta Logo
10:45 - 22:29
LHR
-
ABE
16h 44m
2 stops
Delta Logo
13:00 - 13:05
ABE
-
LHR
19h 05m
2 stops
£749Delta
Thu, 15 Oct - Thu, 22 Oct
United Airlines Logo
07:30 - 17:08
LHR
-
ABE
38h 38m
2 stops
United Airlines Logo
17:46 - 08:30
ABE
-
LHR
33h 44m
1 stop
£750United Airlines
Wed, 30 Sep - Sun, 4 Oct
United Airlines Logo
08:45 - 09:39
LHR
-
ABE
29h 54m
2 stops
United Airlines Logo
10:32 - 11:55
ABE
-
LHR
20h 23m
1 stop
£769United Airlines
Thu, 17 Sep - Mon, 21 Sep
United Airlines Logo
08:45 - 09:39
LHR
-
ABE
29h 54m
2 stops
United Airlines Logo
10:32 - 11:55
ABE
-
LHR
20h 23m
1 stop
£770United Airlines
Thu, 17 Sep - Mon, 21 Sep
United Airlines Logo
06:55 - 21:00
LHR
-
ABE
19h 05m
2 stops
United Airlines Logo
17:36 - 06:45
ABE
-
LHR
32h 09m
1 stop
£772United Airlines
Sat, 12 Sep - Sun, 13 Sep
United Airlines Logo
07:30 - 16:56
LHR
-
ABE
38h 26m
2 stops
United Airlines Logo
10:32 - 07:55
ABE
-
LHR
40h 23m
2 stops
£773United Airlines
Thu, 17 Sep - Mon, 21 Sep
United Airlines Logo
07:30 - 09:39
LHR
-
ABE
31h 09m
2 stops
United Airlines Logo
17:36 - 11:55
ABE
-
LHR
13h 19m
1 stop
£774United Airlines
Thu, 17 Sep - Mon, 21 Sep
United Airlines Logo
07:30 - 09:39
LHR
-
ABE
31h 09m
2 stops
United Airlines Logo
17:36 - 11:55
ABE
-
LHR
13h 19m
1 stop
£774United Airlines
Thu, 17 Sep - Mon, 21 Sep

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United Airlines flights from London Heathrow Airport to Allentown

Our best United Airlines deals on London Heathrow Airport to Allentown flight tickets
United Airlines
30 Sept
LHR07:30London Heathrow
38h 38m
2 stops
ABE17:08Allentown-Bethlehem
4 Oct
ABE17:46Allentown-Bethlehem
33h 44m
1 stop
LHR08:30London Heathrow
£750
United Airlines
17 Sept
LHR08:45London Heathrow
29h 54m
2 stops
ABE09:39Allentown-Bethlehem
21 Sept
ABE10:32Allentown-Bethlehem
20h 23m
1 stop
LHR11:55London Heathrow
£769
United Airlines
17 Sept
LHR08:45London Heathrow
29h 54m
2 stops
ABE09:39Allentown-Bethlehem
21 Sept
ABE10:32Allentown-Bethlehem
20h 23m
1 stop
LHR11:55London Heathrow
£770

Virgin Atlantic flights from London Heathrow Airport to Allentown

Our best Virgin Atlantic deals on London Heathrow Airport to Allentown flight tickets
Virgin Atlantic
15 Oct
LHR13:25London Heathrow
32h 50m
1 stop
ABE17:15Allentown-Bethlehem
22 Oct
ABE18:00Allentown-Bethlehem
14h 15m
1 stop
LHR13:15London Heathrow
£725
Virgin Atlantic
21 Aug
LHR08:40London Heathrow
18h 43m
2 stops
ABE22:23Allentown-Bethlehem
28 Aug
ABE13:10Allentown-Bethlehem
12h 15m
1 stop
LHR06:25London Heathrow
£900
Virgin Atlantic
21 Aug
LHR09:20London Heathrow
12h 59m
1 stop
ABE17:19Allentown-Bethlehem
28 Aug
ABE06:16Allentown-Bethlehem
19h 09m
1 stop
LHR06:25London Heathrow
£902

momondo Fare Finder

 
Customise your flight search to find flights from London Heathrow Airport to Allentown that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 279,928 searches. Data last updated 10 July 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Allentown that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Thu 15/10

17:05-16:35

2 stops28h 30m

Allentown-Bethlehem

Thu 22/10

18:20-10:50

1 stop11h 30m

£691

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Thu 15/10

13:25-17:15

1 stop32h 50m

Allentown-Bethlehem

Thu 22/10

18:00-13:15

1 stop14h 15m

£725
Fastest return journey

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Thu 15/10

10:45-22:29

2 stops16h 44m

Allentown-Bethlehem

Thu 22/10

13:00-13:05

2 stops19h 05m

£749

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Wed 30/9

07:30-17:08

2 stops38h 38m

Allentown-Bethlehem

Sun 4/10

17:46-08:30

1 stop33h 44m

£750

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Thu 17/9

08:45-09:39

2 stops29h 54m

Allentown-Bethlehem

Mon 21/9

10:32-11:55

1 stop20h 23m

£769

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Thu 17/9

08:45-09:39

2 stops29h 54m

Allentown-Bethlehem

Mon 21/9

10:32-11:55

1 stop20h 23m

£770

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Sat 12/9

06:55-21:00

2 stops19h 05m

Allentown-Bethlehem

Sun 13/9

17:36-06:45

1 stop32h 09m

£772

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Thu 17/9

07:30-16:56

2 stops38h 26m

Allentown-Bethlehem

Mon 21/9

10:32-07:55

2 stops40h 23m

£773

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Thu 17/9

07:30-09:39

2 stops31h 09m

Allentown-Bethlehem

Mon 21/9

17:36-11:55

1 stop13h 19m

£774

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Thu 17/9

07:30-09:39

2 stops31h 09m

Allentown-Bethlehem

Mon 21/9

17:36-11:55

1 stop13h 19m

£774

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Allentown from

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

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 London Heathrow to Allentown-Bethlehem?

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

Which airlines fly to Allentown?

British Airways, Lufthansa and United Airlines are the top three most popular airlines that fly to Allentown from London Heathrow Airport according to our data. British Airways is the first choice among our users, with 45% of people opting to fly with this airline when travelling to Allentown. Keep in mind that there are 16 different airlines that fly to Allentown on a routine basis, so you have a few additional options to choose from.

When to book flights from London Heathrow Airport to Allentown

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

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

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

Fastest flight time

13h 15m

Direct flights

None
The fastest flight from London Heathrow Airport to Allentown takes 13h 15m
There are no direct flights from London Heathrow Airport to Allentown. There are no popular flight routes from London Heathrow Airport to Allentown.
Search flight deals

Frequently asked questions about flying from London Heathrow Airport to Allentown

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

    A flight from London Heathrow to Allentown-Bethlehem will travel around 3510.6 mi. Flights usually cover this in 13h 15m, depending on flying conditions and air traffic around both airports.

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

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

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

  • What documentation or ID do you need to fly to Allentown-Bethlehem Airport?

    The travel and health documents you'll need for your trip to Allentown-Bethlehem Airport 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 Allentown-Bethlehem Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Why use momondo?

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

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 London to Allentown for you.

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

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

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

Once all potential London to Allentown 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 London to Allentown right now. Can momondo alert me if prices change?

Yes. momondo can track prices for London to Allentown 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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