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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 25/4. Fares are subject to change and may not be available on all flights or dates of travel.
— ABE
8 Mar — 15 Mar1
1 adult
1 adult, Economy, 0 bags

Flights to Allentown in 2026

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 6 February 2026.

Mon 23/310:00
LHR
-
ABE
2 stops30h 16m
Delta
Mon 30/306:32
ABE
-
LHR
1 stop19h 13m
Delta
Deal found 6/2£605
Thu 14/515:15
LHR
-
ABE
1 stop31h 08m
Virgin Atlantic
Mon 18/518:16
ABE
-
LHR
1 stop13h 59m
Virgin Atlantic
Deal found 6/2£629
Thu 14/506:15
LHR
-
ABE
2 stops21h 03m
Delta
Mon 18/518:16
ABE
-
LHR
2 stops20h 54m
Delta
Deal found 6/2£649
Mon 23/310:45
LHR
-
ABE
1 stop16h 11m
KLM
Mon 30/317:58
ABE
-
LHR
1 stop14h 17m
KLM
Deal found 6/2£679
Sun 22/317:50
LHR
-
ABE
2 stops57h 06m
Virgin Atlantic
Sun 29/317:58
ABE
-
LHR
1 stop31h 27m
Virgin Atlantic
Deal found 5/2£693
Fri 20/315:50
LHR
-
ABE
1 stop34h 21m
KLM
Fri 27/317:58
ABE
-
LHR
1 stop31h 27m
KLM
Deal found 3/2£702
Fri 20/320:00
LHR
-
ABE
2 stops20h 11m
Delta
Fri 27/312:56
ABE
-
LHR
2 stops13h 59m
Delta
Deal found 3/2£762
Sat 21/316:20
LHR
-
ABE
2 stops21h 36m
United Airlines
Sat 28/318:51
ABE
-
LHR
1 stop33h 09m
United Airlines
Deal found 4/2£834
Fri 20/310:25
LHR
-
ABE
1 stop27h 31m
United Airlines
Fri 27/318:51
ABE
-
LHR
2 stops34h 09m
United Airlines
Deal found 3/2£836

Find flight deals to Allentown

Find the latest flights to Allentown in 2026, 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 6 February 2026.

Return from

£605

One-way from

£456
Delta
  • Delta
  • 23/3-30/3
  • 3 total stops
  • 49h 29m total
  • London to Allentown
Search Deals
Delta
  • Delta
  • 25/4
  • 2 total stops
  • 17h 05m total
  • London to Allentown
Search Deals

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 6 February 2026.
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

Mon 23/3

10:00-12:16

2 stops30h 16m

Allentown-Bethlehem

Mon 30/3

06:32-10:20

2 stops22h 48m

£605

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Thu 14/5

15:15-17:23

1 stop31h 08m

Allentown-Bethlehem

Mon 18/5

18:16-13:15

1 stop13h 59m

£629

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Thu 14/5

06:15-22:18

2 stops21h 03m

Allentown-Bethlehem

Mon 18/5

18:16-20:10

2 stops20h 54m

£649

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Mon 23/3

10:45-22:56

1 stop16h 11m

Allentown-Bethlehem

Mon 30/3

17:58-13:15

1 stop14h 17m

£679

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Fri 20/3

15:50-22:11

1 stop34h 21m

Allentown-Bethlehem

Fri 27/3

17:58-05:25

1 stop31h 27m

£702

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Sun 22/3

17:50-22:56

2 stops57h 06m

Allentown-Bethlehem

Sun 29/3

17:58-07:10

2 stops32h 12m

£717

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Fri 20/3

20:00-12:11

2 stops20h 11m

Allentown-Bethlehem

Fri 27/3

12:56-06:55

2 stops13h 59m

£762

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Sat 21/3

16:20-09:56

2 stops21h 36m

Allentown-Bethlehem

Sat 28/3

18:51-08:00

1 stop33h 09m

£834

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Fri 20/3

10:25-09:56

1 stop27h 31m

Allentown-Bethlehem

Fri 27/3

18:51-09:00

2 stops34h 09m

£836

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Sat 25/4

10:55-23:00

2 stops17h 05m

£456

Flights are sorted by cheapest return flights first.

Deals found on 2/2

Showing 1-10 of 17 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 16 hours 55 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.

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.

  • Where does the fastest flight to Allentown depart from?

    For those looking to save time traveling to Allentown, Edinburgh Turnhouse offers the quickest one-way flight (16 hours 32 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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Yes, we can. To see specific flights to Allentown with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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