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£454+ 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 5/9. Fares are subject to change and may not be available on all flights or dates of travel.
— ABE
17 Jul — 24 Jul1
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 17 June 2026.

Wed 1/712:00
LHR
-
ABE
1 stop17h 21m
Finnair
Wed 15/717:12
ABE
-
LHR
1 stop12h 18m
Finnair
Deal found 14/6£641
Thu 1/1013:10
LHR
-
ABE
1 stop14h 07m
British Airways
Thu 8/1006:00
ABE
-
LHR
1 stop19h 50m
British Airways
Deal found 16/6£695
Thu 1/1008:45
LHR
-
ABE
2 stops29h 50m
United Airlines
Thu 8/1017:46
ABE
-
LHR
1 stop34h 14m
United Airlines
Deal found 16/6£695
Wed 23/907:30
LHR
-
ABE
2 stops38h 38m
United Airlines
Sun 27/910:37
ABE
-
LHR
1 stop20h 18m
United Airlines
Deal found 12/6£699
Thu 2/712:15
LHR
-
ABE
2 stops17h 08m
Finnair
Fri 17/706:01
ABE
-
LHR
1 stop21h 04m
Finnair
Deal found 14/6£701
Mon 13/715:00
LHR
-
ABE
1 stop14h 23m
American Airlines
Sun 19/717:12
ABE
-
LHR
1 stop12h 18m
American Airlines
Deal found 14/6£702
Mon 13/708:40
LHR
-
ABE
2 stops41h 27m
United Airlines
Sun 19/717:41
ABE
-
LHR
1 stop32h 04m
United Airlines
Deal found 14/6£724
Thu 2/706:50
LHR
-
ABE
2 stops32h 08m
United Airlines
Fri 17/710:35
ABE
-
LHR
2 stops27h 05m
United Airlines
Deal found 14/6£733
Sat 4/708:00
LHR
-
ABE
1 stop14h 06m
United Airlines
Wed 5/810:35
ABE
-
LHR
1 stop16h 55m
United Airlines
Deal found 13/6£751

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 17 June 2026.

Return from

£641

One-way from

£454
Finnair
  • Finnair
  • 1/7-15/7
  • 2 total stops
  • 29h 39m total
  • London to Allentown
Search Deals
5/9
  • 5/9
  • 2 total stops
  • 41h 55m 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 17 June 2026.
Use the filters below to find and compare flights to Allentown that are best for you.

Fly from

Route

Depart

Return

Price

Cheapest return flight

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Wed 1/7

18:05-18:32

2 stops53h 27m

Allentown-Bethlehem

Wed 15/7

06:01-10:30

1 stop23h 29m

£668

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Thu 1/10

08:45-09:35

2 stops29h 50m

Allentown-Bethlehem

Thu 8/10

17:46-09:00

1 stop34h 14m

£695

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Wed 23/9

07:30-17:08

2 stops38h 38m

Allentown-Bethlehem

Sun 27/9

10:37-11:55

1 stop20h 18m

£699

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Mon 13/7

08:40-21:07

2 stops41h 27m

Allentown-Bethlehem

Sun 19/7

17:41-06:45

1 stop32h 04m

£724

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Thu 2/7

06:50-09:58

2 stops32h 08m

Allentown-Bethlehem

Fri 17/7

10:35-18:40

2 stops27h 05m

£733

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Wed 1/7

16:40-09:58

2 stops22h 18m

Allentown-Bethlehem

Wed 15/7

06:15-05:55

2 stops18h 40m

£751

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Thu 9/7

08:00-17:01

1 stop14h 01m

Allentown-Bethlehem

Wed 29/7

17:41-11:55

1 stop13h 14m

£752
Fastest return journey

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Tue 7/7

13:25-23:08

1 stop14h 43m

Allentown-Bethlehem

Thu 6/8

18:08-11:20

1 stop12h 12m

£799

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Mon 27/7

15:00-00:23

1 stop14h 23m

Allentown-Bethlehem

Mon 3/8

17:12-12:15

1 stop14h 03m

£817

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Thu 30/7

12:15-23:08

1 stop15h 53m

Allentown-Bethlehem

Thu 6/8

17:12-12:15

1 stop14h 03m

£847

Flights are sorted by cheapest return flights first.

Deals found on 16/6

Showing 1-10 of 19 resultsSorted by cheapest first
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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 1 minute. 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, London offers the quickest one-way flight (14 hours 1 minute).

  • 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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