HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Heathrow

$340+ 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 8/11. Fares are subject to change and may not be available on all flights or dates of travel.
ABE — LHR
Jun 2 — Jun 91
Tue 6/2
Tue 6/9
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Allentown to Heathrow with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 May 3, 2026.

This United Airlines deal was found by Cheapflights users on 4/28. 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 11/105:36 pm
ABE
-
LHR
1 stop33h 19m
United Airlines
Fri 11/136:50 am
LHR
-
ABE
2 stops15h 06m
United Airlines
Deal found 4/28$765
This United Airlines deal was found by Cheapflights users on 4/29. 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 11/410:38 am
ABE
-
LHR
1 stop20h 22m
United Airlines
Fri 11/206:50 am
LHR
-
ABE
2 stops15h 06m
United Airlines
Deal found 4/29$890
This United Airlines deal was found by Cheapflights users on 4/29. 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 9/95:36 pm
ABE
-
LHR
1 stop13h 19m
United Airlines
Wed 9/166:55 am
LHR
-
ABE
2 stops19h 17m
United Airlines
Deal found 4/29$891
This United Airlines deal was found by Cheapflights users on 4/29. 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 11/410:38 am
ABE
-
LHR
2 stops15h 02m
United Airlines
Wed 11/186:50 am
LHR
-
ABE
2 stops15h 06m
United Airlines
Deal found 4/29$894
This United Airlines deal was found by Cheapflights users on 4/28. 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 10/315:36 pm
ABE
-
LHR
1 stop34h 19m
United Airlines
Wed 11/116:50 am
LHR
-
ABE
2 stops15h 06m
United Airlines
Deal found 4/28$895
This United Airlines deal was found by Cheapflights users on 4/29. 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 11/410:38 am
ABE
-
LHR
1 stop14h 17m
United Airlines
Tue 11/177:40 am
LHR
-
ABE
1 stop14h 16m
United Airlines
Deal found 4/29$919
This United Airlines deal was found by Cheapflights users on 4/30. 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 11/26:15 am
ABE
-
LHR
1 stop18h 40m
United Airlines
Mon 11/165:30 pm
LHR
-
ABE
2 stops28h 26m
United Airlines
Deal found 4/30$922
This United Airlines deal was found by Cheapflights users on 5/3. 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 8/122:30 pm
ABE
-
LHR
2 stops14h 55m
United Airlines
Wed 8/197:45 am
LHR
-
ABE
2 stops18h 27m
United Airlines
Deal found 5/3$923
This United Airlines deal was found by Cheapflights users on 4/30. 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.
Thu 5/72:15 pm
ABE
-
LHR
1 stop16h 40m
United Airlines
Mon 5/116:50 am
LHR
-
ABE
2 stops15h 10m
United Airlines
Deal found 4/30$927
This Delta deal was found by Cheapflights users on 5/2. 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.
Sun 11/11:00 pm
ABE
-
LHR
1 stop15h 00m
Delta
Sat 11/146:30 am
LHR
-
ABE
2 stops15h 42m
Delta
Deal found 5/2$928
This Delta deal was found by Cheapflights users on 5/3. 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.
Sun 5/1012:59 pm
ABE
-
LHR
2 stops19h 06m
Delta
Sun 5/176:30 am
LHR
-
ABE
2 stops20h 48m
Delta
Deal found 5/3$932
This United Airlines deal was found by Cheapflights users on 4/30. 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.
Thu 5/76:15 am
ABE
-
LHR
1 stop19h 30m
United Airlines
Thu 5/148:45 am
LHR
-
ABE
2 stops30h 18m
United Airlines
Deal found 4/30$933

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 May 3, 2026.

Most accurate provider

Ovago
3 stars

Most trusted provider

Ovago
3 stars

Round-trip from

$891
(United Airlines)

One-way from

$340
(United Airlines)
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
Search Deals

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 May 3, 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

Wed 8/12

2:30 pm-11:55 am

1 stop16h 25m

London Heathrow

Wed 8/19

6:50 am-10:06 am

2 stops32h 16m

$895

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Wed 9/2

6:15 am-6:30 am

2 stops19h 15m

London Heathrow

Sat 9/12

6:50 am-9:12 pm

2 stops19h 22m

$943

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Tue 9/22

10:38 am-6:45 am

1 stop15h 07m

London Heathrow

Mon 10/5

6:50 am-10:06 am

2 stops32h 16m

$945
Quickest round-trip

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Thu 10/29

5:40 pm-11:40 am

1 stop14h 00m

London Heathrow

Tue 11/17

9:30 am-10:46 pm

2 stops18h 16m

$960

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Tue 8/25

10:38 am-9:00 am

1 stop17h 22m

London Heathrow

Mon 9/7

7:45 am-9:12 pm

2 stops18h 27m

$973
Cheapest one-way

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Tue 9/1

10:38 am-6:55 am

2 stops15h 17m

$340

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Wed 8/12

1:00 pm-6:25 am

1 stop12h 25m

$364

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Thu 10/8

6:15 am-6:45 am

1 stop19h 30m

$390

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Fri 10/30

6:15 am-6:40 am

2 stops20h 25m

$390
Quickest one-way

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Mon 5/11

6:15 pm-11:20 am

1 stop12h 05m

$501

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 14 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 May.
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 and Delta fly from Allentown to London Heathrow Airport in about 14h 52m. The time it takes to get you to your destination can typically vary by up to 4h 03m. The distance between Allentown and London Heathrow Airport is about 3507 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
Site
©2026 Cheapflights