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$329+ Cheap flights from Allentown (ABE) to Heathrow (LHR)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/1. Fares are subject to change and may not be available on all flights or dates of travel.
ABE — LHR
Aug 24 — Aug 311
Mon 8/24
Mon 8/31
1 adult, Economy
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Find cheap flights from Allentown to Heathrow with Cheapflights

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Cheap flight deals from Allentown to Heathrow

Cheapest flights from Allentown to Heathrow
Explore the most affordable flight options available from Allentown to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 25, 2026.

This United Airlines deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/510:37 am
ABE
-
LHR
1 stop16h 53m
United Airlines
Thu 10/156:50 am
LHR
-
ABE
2 stops15h 18m
United Airlines
Deal found 7/23$865
This United Airlines deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/45:46 pm
ABE
-
LHR
1 stop13h 09m
United Airlines
Mon 10/125:55 pm
LHR
-
ABE
2 stops28h 13m
United Airlines
Deal found 7/23$877
This United Airlines deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/135:46 pm
ABE
-
LHR
1 stop13h 09m
United Airlines
Thu 10/297:40 am
LHR
-
ABE
1 stop13h 16m
United Airlines
Deal found 7/23$894
This United Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/15:36 pm
ABE
-
LHR
1 stop13h 24m
United Airlines
Wed 12/97:40 am
LHR
-
ABE
1 stop14h 16m
United Airlines
Deal found 7/20$896
This United Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/75:36 pm
ABE
-
LHR
1 stop13h 24m
United Airlines
Tue 12/157:40 am
LHR
-
ABE
1 stop14h 16m
United Airlines
Deal found 7/20$898
This United Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/85:36 pm
ABE
-
LHR
1 stop13h 24m
United Airlines
Tue 12/159:10 am
LHR
-
ABE
2 stops17h 02m
United Airlines
Deal found 7/20$902
This United Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/55:36 pm
ABE
-
LHR
1 stop31h 19m
United Airlines
Tue 12/157:40 am
LHR
-
ABE
1 stop14h 16m
United Airlines
Deal found 7/20$903
This United Airlines deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/256:20 am
ABE
-
LHR
1 stop19h 25m
United Airlines
Thu 10/15:55 pm
LHR
-
ABE
2 stops32h 10m
United Airlines
Deal found 7/24$907
This United Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/710:37 am
ABE
-
LHR
1 stop15h 08m
United Airlines
Mon 10/1211:05 am
LHR
-
ABE
2 stops39h 00m
United Airlines
Deal found 7/20$909
This United Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/96:20 am
ABE
-
LHR
1 stop21h 40m
United Airlines
Tue 10/136:50 am
LHR
-
ABE
2 stops19h 15m
United Airlines
Deal found 7/20$911

Find flight deals from Allentown to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Allentown (ABE) to Heathrow (LHR). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 25, 2026.

Most accurate provider

Ovago
3 stars

Most trusted provider

Ovago
3 stars

Round-trip from

$834
(United Airlines)

One-way from

$329
(Delta)
Provider with most accurate pricing for Allentown-Bethlehem-London Heathrow flight deals.
Search Deals
Provider most trusted by Cheapflights users for Allentown-Bethlehem-London Heathrow flights.
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From Allentown-Bethlehem to London Heathrow
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One-way flight from Allentown-Bethlehem to London Heathrow
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Allentown to Heathrow 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, Cheapflights users made 2,558,603 searches. Data last updated July 25, 2026.
Use the filters below to find and compare flights from Allentown to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Tue 12/1

5:36 pm-12:00 pm

1 stop13h 24m

London Heathrow

Tue 12/8

7:40 am-4:56 pm

1 stop14h 16m

$896

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Fri 9/25

6:20 am-6:45 am

1 stop19h 25m

London Heathrow

Thu 10/1

5:55 pm-9:05 pm

2 stops32h 10m

$907

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Mon 9/7

10:32 am-6:45 am

1 stop15h 13m

London Heathrow

Mon 9/14

6:50 am-9:00 pm

2 stops19h 10m

$924

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Wed 9/9

10:32 am-6:45 am

1 stop15h 13m

London Heathrow

Thu 9/17

6:50 am-4:56 pm

2 stops15h 06m

$924

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Wed 9/9

10:32 am-11:55 am

1 stop20h 23m

London Heathrow

Fri 9/18

6:50 am-9:00 pm

2 stops19h 10m

$924

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Thu 10/8

6:20 am-6:45 am

1 stop19h 25m

London Heathrow

Mon 10/12

11:05 am-9:05 pm

2 stops39h 00m

$924

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Fri 9/4

10:32 am-6:45 am

1 stop15h 13m

London Heathrow

Fri 9/11

6:50 am-4:56 pm

2 stops15h 06m

$925

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Wed 8/26

10:32 am-8:30 am

1 stop16h 58m

London Heathrow

Mon 8/31

8:40 am-9:00 pm

2 stops17h 20m

$926

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Tue 8/25

10:32 am-6:55 am

2 stops15h 23m

London Heathrow

Mon 9/7

6:50 am-4:56 pm

2 stops15h 06m

$929
Cheapest one-way

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Mon 8/3

6:08 pm-1:05 pm

2 stops37h 57m

$346

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/23

Showing 1-10 of 17 resultsSorted by cheapest first
1
2

Compare providers for flights from Allentown to Heathrow

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Allentown to Heathrow in July.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
OvagoPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Allentown-London Heathrow Airport flights, users find the pricing of Ovago to be most consistent on Cheapflights vs. Ovago Users can find the same prices on Allentown-London Heathrow Airport flight deals on Cheapflights vs. Ovago >95% of the time. Price accuracy is based on data collected from Allentown-London Heathrow Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Allentown-London Heathrow Airport flights, Cheapflights users trust Ovago the most. Ovago has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Allentown-London Heathrow Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Allentown to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Allentown with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Related info for your journey

Find useful and relevant information for your journey from Allentown to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Allentown to London Heathrow?

    Allentown-Bethlehem (ABE) is the airport you will fly out of if you book a flight from Allentown to London Heathrow. You should not have trouble finding flights to London Heathrow from Allentown-Bethlehem; the airport handles an average of 0 outbound flights to London Heathrow per day. You should also have plenty of airline options to choose from since 0 airlines have flights from the Allentown airport to London Heathrow. It is only a 3.9 mi journey to Allentown-Bethlehem (ABE) from Allentown’s city center.

  • How long is the flight from Allentown to London Heathrow Airport?

    Airlines like United Airlines fly from Allentown to London Heathrow Airport in about 13h 24m. The time it takes to get you to your destination can typically vary by up to . The distance between Allentown and London Heathrow Airport is about 3507 mi.

  • Can I find deals for flights from Allentown to Heathrow that include hotel bookings?

    Yes. In addition to deals on Allentown to Heathrow flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Allentown to Heathrow?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Allentown to Heathrow.

  • Can I find deals for business class flights from Allentown to Heathrow?

    Yes. Cheapflights offers flight deals from Allentown to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Ilford
Dorking
Hounslow
Winchester
Croydon
Gatwick
Wembley
Harrow
Eastleigh
Southend-on-Sea
Watford
Northampton
Dartford
Chipping Norton
Kingston upon Thames
Eastbourne
Slough
Stansted
Sutton
Luton

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