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Cheap flights from London Heathrow Airport to Allentown from £438

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 8/6. 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
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.
KLM Logo
13:25 - 17:21
LHR
-
ABE
32h 56m
1 stop
KLM Logo
13:00 - 09:00
ABE
-
LHR
16h 00m
1 stop
£698KLM
Mon, 28 Sep - Thu, 29 Oct
Delta Logo
09:20 - 17:21
LHR
-
ABE
13h 01m
1 stop
Delta Logo
13:00 - 08:45
ABE
-
LHR
15h 45m
2 stops
£721Delta
Mon, 28 Sep - Thu, 29 Oct
KLM Logo
08:40 - 17:17
LHR
-
ABE
37h 37m
2 stops
KLM Logo
17:40 - 16:05
ABE
-
LHR
18h 25m
2 stops
£751KLM
Mon, 28 Sep - Thu, 29 Oct
Virgin Atlantic Logo
09:20 - 23:08
LHR
-
ABE
18h 48m
1 stop
Virgin Atlantic Logo
18:05 - 16:35
ABE
-
LHR
17h 30m
2 stops
£751Virgin Atlantic
Thu, 9 Jul - Thu, 16 Jul
Air France Logo
11:30 - 17:25
LHR
-
ABE
34h 55m
2 stops
Air France Logo
13:08 - 13:45
ABE
-
LHR
19h 37m
2 stops
£771Air France
Thu, 9 Jul - Thu, 16 Jul
American Airlines Logo
15:00 - 00:23
LHR
-
ABE
14h 23m
1 stop
American Airlines Logo
17:12 - 11:15
ABE
-
LHR
13h 03m
1 stop
£772American Airlines
Thu, 9 Jul - Thu, 16 Jul
American Airlines Logo
14:45 - 23:08
LHR
-
ABE
13h 23m
1 stop
American Airlines Logo
17:12 - 11:15
ABE
-
LHR
13h 03m
1 stop
£774American Airlines
Thu, 9 Jul - Thu, 16 Jul
Virgin Atlantic Logo
13:25 - 23:08
LHR
-
ABE
14h 43m
1 stop
Virgin Atlantic Logo
13:12 - 09:50
ABE
-
LHR
15h 38m
2 stops
£778Virgin Atlantic
Wed, 10 Jun - Tue, 23 Jun
Air France Logo
15:50 - 17:30
LHR
-
ABE
30h 40m
2 stops
Air France Logo
18:09 - 21:25
ABE
-
LHR
46h 16m
2 stops
£781Air France
Tue, 30 Jun - Sat, 4 Jul
Multiple Airlines Logo
11:10 - 23:19
LHR
-
ABE
17h 09m
1 stop
Multiple Airlines Logo
06:00 - 11:15
ABE
-
LHR
24h 15m
1 stop
£782Multiple Airlines
Wed, 10 Jun - Tue, 23 Jun

Air France flights from London Heathrow Airport to Allentown

Our best Air France deals on London Heathrow Airport to Allentown flight tickets
Air France
9 Jul
LHR11:30London Heathrow
34h 55m
2 stops
ABE17:25Allentown-Bethlehem
16 Jul
ABE13:08Allentown-Bethlehem
19h 37m
2 stops
LHR13:45London Heathrow
£771
Air France
30 Jun
LHR15:50London Heathrow
30h 40m
2 stops
ABE17:30Allentown-Bethlehem
4 Jul
ABE18:09Allentown-Bethlehem
46h 16m
2 stops
LHR21:25London Heathrow
£781
Air France
22 Aug
LHR09:20London Heathrow
13h 03m
1 stop
ABE17:23Allentown-Bethlehem
2 Sept
ABE13:10Allentown-Bethlehem
37h 00m
2 stops
LHR07:10London Heathrow
£899

Virgin Atlantic flights from London Heathrow Airport to Allentown

Our best Virgin Atlantic deals on London Heathrow Airport to Allentown flight tickets
Virgin Atlantic
9 Jul
LHR09:20London Heathrow
18h 48m
1 stop
ABE23:08Allentown-Bethlehem
16 Jul
ABE18:05Allentown-Bethlehem
17h 30m
2 stops
LHR16:35London Heathrow
£751
Virgin Atlantic
10 Jun
LHR13:25London Heathrow
14h 43m
1 stop
ABE23:08Allentown-Bethlehem
23 Jun
ABE13:12Allentown-Bethlehem
15h 38m
2 stops
LHR09:50London Heathrow
£778
Virgin Atlantic
21 Jul
LHR08:55London Heathrow
19h 13m
2 stops
ABE23:08Allentown-Bethlehem
29 Jul
ABE18:05Allentown-Bethlehem
14h 10m
1 stop
LHR13:15London Heathrow
£854

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 28 May 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

Mon 28/9

13:25-17:21

1 stop32h 56m

Allentown-Bethlehem

Thu 29/10

13:00-09:00

1 stop16h 00m

£698

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Mon 28/9

09:20-17:21

1 stop13h 01m

Allentown-Bethlehem

Thu 29/10

13:00-08:45

2 stops15h 45m

£721

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Mon 28/9

08:40-17:17

2 stops37h 37m

Allentown-Bethlehem

Thu 29/10

17:40-16:05

2 stops18h 25m

£751

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Thu 9/7

09:20-23:08

1 stop18h 48m

Allentown-Bethlehem

Thu 16/7

18:05-16:35

2 stops17h 30m

£751

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Thu 9/7

11:30-17:25

2 stops34h 55m

Allentown-Bethlehem

Thu 16/7

13:08-13:45

2 stops19h 37m

£771

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Thu 9/7

15:00-00:23

1 stop14h 23m

Allentown-Bethlehem

Thu 16/7

17:12-11:15

1 stop13h 03m

£772
Fastest return journey

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Thu 9/7

14:45-23:08

1 stop13h 23m

Allentown-Bethlehem

Thu 16/7

17:12-11:15

1 stop13h 03m

£774

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Wed 10/6

13:25-23:08

1 stop14h 43m

Allentown-Bethlehem

Tue 23/6

13:12-09:50

2 stops15h 38m

£778

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Tue 30/6

15:50-17:30

2 stops30h 40m

Allentown-Bethlehem

Sat 4/7

18:09-21:25

2 stops46h 16m

£781

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Wed 10/6

11:10-23:19

1 stop17h 09m

Allentown-Bethlehem

Tue 23/6

06:00-11:15

1 stop24h 15m

£782

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?

Air France and American 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 53m

Direct flights

None
The fastest flight from London Heathrow Airport to Allentown takes 13h 53m
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 53m, 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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