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£591+ Cheap flights to Allentown

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 21/1. Fares are subject to change and may not be available on all flights or dates of travel.
— ABE
21 Dec — 28 Dec1
1 adult
1 adult, Economy, 0 bags

Flights to Allentown in 2025

Find the latest flights to Allentown in 2025, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 858,174 searches and data was last updated on 21 November 2025.

Return from

£591

One-way from

£733
American Airlines
  • American Airlines
  • 21/1-25/1
  • 3 total stops
  • 28h 49m total
  • London to Allentown
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United Airlines
  • United Airlines
  • 26/11
  • 2 total stops
  • 17h 16m total
  • London to Allentown
Search Deals

Find flight deals to Allentown

Enter your travel dates to find the best prices.

Best flights to Allentown
Discover carefully curated flight deals to Allentown that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 21 November 2025.

Wed 21/114:45LHR - ABE
1 stop12h 41mAmerican Airlines
Sun 25/113:02ABE - LHR
2 stops16h 08mAmerican Airlines
Deal found 20/11£591
Fri 27/310:25LHR - ABE
1 stop34h 26mUnited Airlines
Tue 31/310:38ABE - LHR
1 stop15h 07mUnited Airlines
Deal found 18/11£774
Fri 27/312:30LHR - ABE
1 stop14h 22mDelta
Tue 31/313:00ABE - LHR
2 stops16h 50mDelta
Deal found 19/11£832
Fri 27/319:10LHR - ABE
2 stops19h 45mAmerican Airlines
Tue 31/313:48ABE - LHR
2 stops12h 57mAmerican Airlines
Deal found 18/11£818
Sun 4/113:25LHR - ABE
2 stops50h 16mUnited Airlines
Sun 11/116:57ABE - LHR
1 stop31h 58mUnited Airlines
Deal found 20/11£1,055
Mon 5/113:35LHR - ABE
1 stop13h 12mUnited Airlines
Mon 12/116:57ABE - LHR
2 stops33h 13mUnited Airlines
Deal found 21/11£1,118

Cheapflights Fare Finder

 
Locate flights to Allentown that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 858,174 searches and data was last updated on 21 November 2025.
Use the filters below to find and compare flights to Allentown that are best for you.

Fly from

London

Route

Depart

Return

Price

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Wed 21/1

14:45-22:26

1 stop12h 41m

Allentown-Bethlehem

Sun 25/1

13:02-10:10

2 stops16h 08m

£591

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Fri 27/3

10:25-16:51

1 stop34h 26m

Allentown-Bethlehem

Tue 31/3

10:38-06:45

1 stop15h 07m

£774

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Fri 27/3

19:10-10:55

2 stops19h 45m

Allentown-Bethlehem

Tue 31/3

13:48-07:45

2 stops12h 57m

£818

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Fri 27/3

12:30-22:52

1 stop14h 22m

Allentown-Bethlehem

Tue 31/3

13:00-10:50

2 stops16h 50m

£832

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Sun 4/1

13:25-10:41

2 stops50h 16m

Allentown-Bethlehem

Sun 11/1

16:57-05:55

1 stop31h 58m

£1,055

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Mon 5/1

13:35-21:47

1 stop13h 12m

Allentown-Bethlehem

Mon 12/1

16:57-07:10

2 stops33h 13m

£1,118

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Wed 26/11

09:00-21:16

2 stops17h 16m

£733

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Thu 27/11

09:00-11:48

2 stops31h 48m

£775

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Fri 28/11

06:50-21:16

2 stops19h 26m

£781

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Wed 26/11

16:10-13:29

2 stops26h 19m

£865

Flights are sorted by cheapest return flights first.

Deals found on 19/11

Showing 1-10 of 14 results
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Best time to book a flight to Allentown

Have a flexible travel schedule? Discover the best time to fly to Allentown with our price prediction graph.
Estimated return 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 to Allentown

How long is the flight to Allentown?

On average, a flight from London to Allentown takes 13 hours 24 minutes. Flights to Allentown from other popular cities in United Kingdom will vary in length. Below are a few examples of popular routes and their flight times.

What are the most popular airlines that fly to Allentown?

The most popular airline flying from London to Allentown is Finnair.

Finnair
Finnair
From £545

What are the cheapest airlines that fly to Allentown?

The cheapest airline flying from London to Allentown is Finnair.

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 69.0 - 127.0 inches per month. July is typically the wettest month, when rainfall can reach 127.0 mm. February is typically the driest time to visit Allentown when rainfall is around 69.0 mm.

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 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -2.0 C).

FAQs about flying to Allentown

Getting around Allentown

Daily regional bus and coach services are available to New York City, Philadelphia and Atlantic City. A great way to discover the city environs is by bike and making use of the fabulous parks and gardens system, canal tow paths and extensive trails. Exploring on foot the main central area is a good option or try a walking tour of the historic districts in Allentown to soak up the ambience of this characterful American city.

Getting from the Airport to the City

Lehigh Valley International Airport (ABE) is easily accessible within 15 minutes from most parts of Allentown. There is a convenient local bus service provided by LANTA and several taxi and limo companies operating in the city.

  • What airport do you fly into for flights to Allentown?

    Most people fly into Allentown-Bethlehem (ABE) if they book a flight to Allentown. Allentown-Bethlehem is conveniently located just 3.9 mi from Allentown’s city center.

  • Can I find cheaper flights to Allentown if I am willing to have stopovers?

    Yes, flights with stopovers are often cheaper than direct flights. Keep an eye out for flight deals to Allentown on Cheapflights that require 1 or 2 stops for potential cost savings.

  • What is the best airline to fly to Allentown?

    Based on reviews from Cheapflights users, Finnair is rated the highest out of the airlines that fly to Allentown.

  • Where does the fastest flight to Allentown depart from?

    For those looking to save time traveling to Allentown, London offers the quickest one-way flight (13 hours 24 minutes).

  • Does Allentown-Bethlehem have car hire?

    Yes. Those touching down at Allentown-Bethlehem can take advantage of the car hire services offered upon their arrival.

  • Are there hotels close to Allentown-Bethlehem?

    Yes. Allentown-Bethlehem has hotels nearby for those requiring accommodations. Days Hotel by Wyndham Allentown Airport / Lehigh Valley is the closest property to Allentown-Bethlehem (0.0 mi away from Allentown-Bethlehem).

See more FAQs

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