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Allentown

$776+ Cheap flights from Heathrow (LHR) to Allentown (ABE)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/26. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — ABE
Jun 21 — Jun 281
Sat 6/21
Sat 6/28
1 adult, Economy
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Cheap flight deals from Heathrow to Allentown

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Allentown (ABE). 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 June 16, 2025.

Round-trip from

$776
(Delta)

Popular in

August

Cheapest in

April

Average price

$680
From London Heathrow to Allentown-Bethlehem
Search Deals
Highest demand for flights based on searches. 20% potential increase in price ($219 potential increase over avg. RT price).
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Cheapest flight prices on average. 10% potential price decrease ($83 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find flight deals from Heathrow to Allentown

Cheapest flights from Heathrow to Allentown
Explore the most affordable flight options available from Heathrow to Allentown. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 16, 2025.

This Delta deal was found by Cheapflights users on 6/16. 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.
Thu 6/261:05 pmLHR - ABE
1 stop14h 24mDelta
Tue 7/112:57 pmABE - LHR
2 stops17h 28mDelta
Deal found 6/16$776
This American Airlines deal was found by Cheapflights users on 6/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/2911:00 amLHR - ABE
1 stop13h 32mAmerican Airlines
Sun 7/68:03 pmABE - LHR
1 stop11h 27mAmerican Airlines
Deal found 6/15$880
This United Airlines deal was found by Cheapflights users on 6/15. 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 7/306:50 amLHR - ABE
2 stops15h 10mUnited Airlines
Wed 8/65:35 pmABE - LHR
1 stop13h 10mUnited Airlines
Deal found 6/15$1,551
This Mytrip deal was found by Cheapflights users on 6/16. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/319:25 pmLHR - ABE
3 stops30h 20mMultiple Airlines
Thu 8/77:00 amABE - LHR
2 stops23h 55mMultiple Airlines
Deal found 6/16$1,577
This KLM deal was found by Cheapflights users on 6/15. 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.
Sun 6/299:40 amLHR - ABE
2 stops17h 49mKLM
Sun 7/66:00 amABE - LHR
1 stop19h 45mKLM
Deal found 6/15$2,049

Cheapflights Fare Finder

Customize your flight search to find flights from Heathrow 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, Cheapflights users made 2,558,603 searches. Data last updated June 16, 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Allentown that are best for you.

Fly from

Heathrow

Fly to

Allentown

Route

Depart

Return

Price

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Thu 6/26

1:05 pm-10:29 pm

1 stop14h 24m

Allentown-Bethlehem

Tue 7/1

12:57 pm-11:25 am

2 stops17h 28m

$776

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Sun 6/29

11:00 am-7:32 pm

1 stop13h 32m

Allentown-Bethlehem

Sun 7/6

8:03 pm-12:30 pm

1 stop11h 27m

$880

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Wed 7/30

6:50 am-5:00 pm

2 stops15h 10m

Allentown-Bethlehem

Wed 8/6

5:35 pm-11:45 am

1 stop13h 10m

$1,551

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Thu 7/31

9:25 pm-10:45 pm

3 stops30h 20m

Allentown-Bethlehem

Thu 8/7

7:00 am-11:55 am

2 stops23h 55m

$1,577

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Sun 6/29

9:40 am-10:29 pm

2 stops17h 49m

Allentown-Bethlehem

Sun 7/6

6:00 am-6:45 am

1 stop19h 45m

$2,049

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Mon 8/18

6:30 am-5:34 pm

2 stops16h 04m

$1,624

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Tue 7/29

6:05 pm-12:27 am

2 stops35h 22m

$2,851

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Sun 8/10

9:30 am-9:55 pm

2 stops17h 25m

$11,488

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/16

Best time to book a flight from Heathrow to Allentown

Have a flexible travel schedule? Discover the best time to fly to Allentown from Heathrow 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.

Cheapflights Insights

Everything you need to know about your flight from London Heathrow Airport to Allentown

What is the cheapest month to book a flight from London Heathrow Airport to Allentown?

Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to Allentown (average of $292). Flying from London Heathrow Airport to Allentown in December is currently the most expensive (average of $395). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Rainfall in Allentown by month

Plan your trip to Allentown by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Allentown ranges from 2.7 - 5.0 inches per month. July is typically the wettest month, when rainfall can reach 5.0 in. February is typically the driest time to visit Allentown when rainfall is around 2.7 in.

Temperature in Allentown by month

Plan your trip to Allentown by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Allentown, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 28.4 F).

Reviews of airlines servicing Allentown

Get insights into the airlines that provide service to Allentown. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Allentown. Reviews last updated June 16, 2025.
Delta
8.0
Very good
7,963 reviews

Comfort

7.9

Overall

8.0

Crew

8.5

Food

7.3

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,963 reviews
Delta
8.0
Very good
7,963 reviews

Comfort

7.9

Overall

8.0

Crew

8.5

Food

7.3

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,363 reviews
Delta
8.0
Very good
7,963 reviews

Comfort

7.9

Overall

8.0

Crew

8.5

Food

7.3

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,801 reviews
Delta
8.0
Very good
7,963 reviews

Comfort

7.9

Overall

8.0

Crew

8.5

Food

7.3

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,963 reviews

Comfort

7.9

Overall

8.0

Crew

8.5

Food

7.3

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Allentown. 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 into for flights to Allentown from London Heathrow?

    For a flight from London Heathrow to Allentown, you will be flying into Allentown-Bethlehem. Allentown-Bethlehem (ABE) is just 3.9 mi from the center of the city. Allentown-Bethlehem is the only Allentown airport and it handles 0 inbound flights from London Heathrow per day. 0 airlines have flights to Allentown-Bethlehem from London Heathrow on a regular basis.

  • What are the cheapest airlines flying from London Heathrow Airport to Allentown round-trip?

    Currently priced at $776, Delta will fly you from London Heathrow Airport to Allentown and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from American Airlines and United Airlines - these airlines can fly you to your destination from $880 and $1,551, respectively.

  • What are the cheapest airlines to fly from London Heathrow Airport to Allentown one-way?

    To fly one-way, consider booking your trip with Delta, which is currently one of the cheapest options available, starting at $1,624. American Airlines flights start at $2,851 while deals on United Airlines start at $11,488 one-way.

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

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

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

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

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

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

  • What is the cheapest month to book a flight from London Heathrow Airport to Allentown?

    Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to Allentown (average of $292). Flying from London Heathrow Airport to Allentown in December is currently the most expensive (average of $395). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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