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£456+ Cheap flights to Allentown

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 27/12. Fares are subject to change and may not be available on all flights or dates of travel.
— ABE
7 Dec — 14 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 7 November 2025.

Return from

£744

One-way from

£456

Popular in

December

Cheapest in

April

Average price

£590
United Airlines
  • United Airlines
  • 8/1-22/1
  • 3 total stops
  • 32h 58m total
  • London to Allentown
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Delta
  • Delta
  • 27/12
  • 1 total stop
  • 25h 19m total
  • London to Allentown
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Highest demand for flights based on searches. 10% potential increase in price (£72 potential increase over avg. return price).
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Cheapest flight prices on average. 4% potential price decrease (£27 potential savings vs. average return price).
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Average for return flights in November 2025
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Find flight deals to Allentown

Enter your travel dates to find the best prices.

Cheapest flights to Allentown
Explore the most affordable flight options available to Allentown. Find the lowest fares based on data from user searches, with prices last updated on 7 November 2025.

Sat 27/1207:40LHR - ABE
1 stop13h 50mUnited Airlines
Wed 7/111:30ABE - LHR
1 stop13h 25mUnited Airlines
Deal found 5/11£835
Sat 15/1106:50LHR - ABE
2 stops14h 57mUnited Airlines
Fri 21/1117:22ABE - LHR
2 stops32h 48mUnited Airlines
Deal found 7/11£970
Sun 21/1207:40LHR - ABE
1 stop13h 50mUnited Airlines
Sun 28/1217:07ABE - LHR
1 stop31h 48mUnited Airlines
Deal found 6/11£1,582

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 7 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

Thu 8/1

06:35-21:15

2 stops19h 40m

Allentown-Bethlehem

Thu 22/1

16:57-11:15

1 stop13h 18m

£744

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Fri 27/3

12:55-00:14

2 stops15h 19m

Allentown-Bethlehem

Tue 31/3

17:47-11:15

2 stops12h 28m

£810

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Sat 27/12

07:40-16:30

1 stop13h 50m

Allentown-Bethlehem

Wed 7/1

11:30-05:55

1 stop13h 25m

£835

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Sat 27/12

15:50-12:09

1 stop25h 19m

£456

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Thu 11/12

16:10-13:18

2 stops26h 08m

£471

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Sat 6/12

08:55-17:14

1 stop13h 19m

£503

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Mon 15/12

08:55-17:14

1 stop13h 19m

£532

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Fri 12/12

16:10-23:06

2 stops35h 56m

£544

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Mon 29/12

20:45-13:38

3 stops45h 53m

£551

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Fri 12/12

10:45-22:11

1 stop16h 26m

£572

Flights are sorted by cheapest return flights first.

Deals found on 5/11

Showing 1-10 of 15 results
1
2

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 50 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 £544

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 50 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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