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£417+ 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 22/4. Fares are subject to change and may not be available on all flights or dates of travel.
— ABE
30 Nov — 7 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 31 October 2025.

Return from

£637

One-way from

£417

Popular in

December

Cheapest in

April

Average price

£638
Virgin Atlantic
  • Virgin Atlantic
  • 14/12-21/12
  • 4 total stops
  • 68h 32m total
  • London to Allentown
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Delta
  • Delta
  • 22/4
  • 1 total stop
  • 12h 57m total
  • London to Allentown
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Highest demand for flights based on searches. 10% potential increase in price (£71 potential increase over avg. return price).
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Cheapest flight prices on average. 4% potential price decrease (£26 potential savings vs. average return price).
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Average for return flights in October 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 31 October 2025.

Sun 14/1219:40LHR - ABE
2 stops31h 31mVirgin Atlantic
Sun 21/1212:49ABE - LHR
2 stops37h 01mVirgin Atlantic
Deal found 30/10£637
Sat 29/1106:30LHR - ABE
2 stops15h 49mKLM
Sat 6/1206:25ABE - LHR
2 stops20h 15mKLM
Deal found 30/10£829
Sat 29/1106:30LHR - ABE
2 stops20h 42mVirgin Atlantic
Sat 6/1212:54ABE - LHR
1 stop13h 56mVirgin Atlantic
Deal found 30/10£927
Sat 29/1107:40LHR - ABE
1 stop14h 07mUnited Airlines
Sat 6/1213:00ABE - LHR
1 stop17h 15mUnited Airlines
Deal found 30/10£981
Sun 14/1206:00LHR - ABE
3 stops45h 24mMultiple Airlines
Sun 21/1207:15ABE - LHR
2 stops23h 05mMultiple Airlines
Deal found 30/10£1,114
Wed 5/1107:40LHR - ABE
1 stop14h 07mUnited Airlines
Wed 19/1113:00ABE - LHR
1 stop11h 55mUnited Airlines
Deal found 29/10£7,396

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 31 October 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

Sun 14/12

08:55-22:11

1 stop18h 16m

Allentown-Bethlehem

Sun 21/12

18:04-11:55

2 stops36h 51m

£637

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Fri 27/3

12:35-00:14

2 stops15h 39m

Allentown-Bethlehem

Tue 31/3

13:48-07:25

2 stops12h 37m

£814

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Sat 29/11

06:30-17:19

2 stops15h 49m

Allentown-Bethlehem

Sat 6/12

06:25-07:40

2 stops20h 15m

£829

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Fri 27/3

12:30-22:52

1 stop14h 22m

Allentown-Bethlehem

Tue 31/3

13:00-06:30

1 stop12h 30m

£833

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Sat 29/11

06:30-22:12

2 stops20h 42m

Allentown-Bethlehem

Sat 6/12

12:54-07:50

1 stop13h 56m

£927

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Wed 22/4

09:20-17:17

1 stop12h 57m

£417

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Sat 18/4

13:05-22:56

1 stop14h 51m

£459

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Wed 12/11

08:55-17:19

1 stop13h 24m

£584

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Mon 17/11

11:05-22:12

2 stops16h 07m

£588

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Thu 6/11

06:30-17:20

2 stops15h 50m

£617

Flights are sorted by cheapest return flights first.

Deals found on 29/10

Showing 1-10 of 13 results
1
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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 14 hours 22 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 £540

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 (14 hours 22 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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