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$336+ 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 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
ABE — LHR
May 24 — May 311
Sun 5/24
Sun 5/31
1 adult, Economy
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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 April 24, 2026.

This Air France deal was found by Cheapflights users on 4/24. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/251:00 pm
ABE
-
LHR
1 stop12h 25m
Air France
Sun 8/308:55 am
LHR
-
ABE
2 stops19h 01m
Air France
Deal found 4/24$729
This Delta deal was found by Cheapflights users on 4/23. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/36:30 am
ABE
-
LHR
1 stop18h 55m
Delta
Tue 11/1710:45 am
LHR
-
ABE
1 stop17h 01m
Delta
Deal found 4/23$736
This Delta deal was found by Cheapflights users on 4/23. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/61:00 pm
ABE
-
LHR
2 stops14h 45m
Delta
Tue 11/1712:30 pm
LHR
-
ABE
1 stop15h 16m
Delta
Deal found 4/23$740
This Delta deal was found by Cheapflights users on 4/23. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/25:40 pm
ABE
-
LHR
1 stop31h 45m
Delta
Wed 11/1812:30 pm
LHR
-
ABE
1 stop15h 16m
Delta
Deal found 4/23$741
This KLM deal was found by Cheapflights users on 4/22. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/156:30 am
ABE
-
LHR
1 stop25h 45m
KLM
Tue 9/2211:15 am
LHR
-
ABE
1 stop16h 41m
KLM
Deal found 4/22$742
This United Airlines deal was found by Cheapflights users on 4/24. 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.
Mon 8/242:30 pm
ABE
-
LHR
1 stop13h 00m
United Airlines
Wed 8/266:50 am
LHR
-
ABE
2 stops19h 22m
United Airlines
Deal found 4/24$760
This United Airlines deal was found by Cheapflights users on 4/24. 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.
Wed 8/266:15 am
ABE
-
LHR
2 stops22h 45m
United Airlines
Fri 8/286:50 am
LHR
-
ABE
2 stops19h 22m
United Airlines
Deal found 4/24$763
This United Airlines deal was found by Cheapflights users on 4/24. 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.
Sun 8/235:36 pm
ABE
-
LHR
1 stop33h 54m
United Airlines
Wed 8/266:50 am
LHR
-
ABE
2 stops19h 22m
United Airlines
Deal found 4/24$765
This Delta deal was found by Cheapflights users on 4/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/156:30 am
ABE
-
LHR
2 stops20h 10m
Delta
Tue 9/2211:15 am
LHR
-
ABE
1 stop16h 41m
Delta
Deal found 4/22$767
This Delta deal was found by Cheapflights users on 4/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/86:15 pm
ABE
-
LHR
1 stop14h 00m
Delta
Sun 5/105:35 pm
LHR
-
ABE
2 stops28h 53m
Delta
Deal found 4/20$776

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 April 24, 2026.

Most accurate provider

Ovago
2 stars

Most trusted provider

Ovago
3 stars

Round-trip from

$729
(Air France)

One-way from

$336
(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.
Search Deals
From Allentown-Bethlehem to London Heathrow
Search Deals
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 April 24, 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

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Mon 8/3

1:08 pm-7:15 am

1 stop13h 07m

London Heathrow

Sun 8/23

9:20 am-10:56 pm

1 stop18h 36m

$736

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Sat 8/15

5:40 pm-1:15 pm

1 stop14h 35m

London Heathrow

Tue 8/18

5:35 pm-5:17 pm

2 stops28h 42m

$794

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Fri 5/8

12:59 pm-10:30 am

2 stops16h 31m

London Heathrow

Sun 5/10

5:35 pm-5:28 pm

2 stops28h 53m

$829

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Wed 8/26

1:00 pm-7:15 am

1 stop13h 15m

London Heathrow

Mon 9/7

1:25 pm-10:56 pm

1 stop14h 31m

$867

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Tue 9/1

6:15 am-9:00 am

1 stop21h 45m

London Heathrow

Tue 9/8

6:55 am-10:06 am

2 stops32h 11m

$896

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Mon 5/25

6:15 pm-11:20 am

1 stop12h 05m

London Heathrow

Fri 6/5

1:25 pm-10:18 pm

1 stop13h 53m

$911

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Mon 8/3

6:15 am-6:45 am

1 stop19h 30m

London Heathrow

Sun 8/23

2:10 pm-10:06 am

2 stops24h 56m

$946

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Wed 8/26

6:15 am-10:00 am

2 stops22h 45m

London Heathrow

Mon 9/7

8:40 am-1:42 pm

2 stops34h 02m

$950
Quickest round-trip

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Mon 5/4

5:59 pm-11:20 am

1 stop12h 21m

London Heathrow

Thu 5/7

9:20 am-5:28 pm

1 stop13h 08m

$962
Cheapest one-way

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Tue 9/15

6:30 am-7:10 am

2 stops19h 40m

$336

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/22

Showing 1-10 of 19 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 April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 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 90-95% 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 Delta fly from Allentown to London Heathrow Airport in about 13h 07m. 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
Hounslow
Winchester
Croydon
Gatwick
Southend-on-Sea
Harrow
Eastleigh
Dartford
Dover
Orpington
Watford
Northampton
Borehamwood
Broadway
Chipping Norton
Hayes
Kingston upon Thames
Eastbourne
Slough

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