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£457+ 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 25/5. Fares are subject to change and may not be available on all flights or dates of travel.
— ABE
22 Apr — 29 Apr1
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 23 March 2026.

Tue 14/418:05
LHR
-
ABE
2 stops22h 22m
American Airlines
Mon 20/412:00
ABE
-
LHR
2 stops17h 15m
American Airlines
Deal found 20/3£649
Fri 17/418:05
LHR
-
ABE
2 stops22h 22m
American Airlines
Mon 20/412:00
ABE
-
LHR
2 stops17h 15m
American Airlines
Deal found 20/3£650
Fri 17/408:15
LHR
-
ABE
2 stops21h 07m
American Airlines
Thu 23/406:04
ABE
-
LHR
1 stop19h 51m
American Airlines
Deal found 20/3£658
Fri 17/413:25
LHR
-
ABE
1 stop14h 35m
Virgin Atlantic
Tue 21/412:53
ABE
-
LHR
1 stop13h 22m
Virgin Atlantic
Deal found 20/3£669
Thu 16/411:35
LHR
-
ABE
2 stops17h 47m
American Airlines
Mon 20/412:00
ABE
-
LHR
2 stops17h 15m
American Airlines
Deal found 20/3£679
Tue 14/408:15
LHR
-
ABE
2 stops20h 13m
American Airlines
Tue 21/412:57
ABE
-
LHR
2 stops15h 53m
American Airlines
Deal found 20/3£687
Fri 17/408:15
LHR
-
ABE
2 stops21h 07m
American Airlines
Fri 24/412:00
ABE
-
LHR
2 stops15h 30m
American Airlines
Deal found 20/3£688
Sat 18/411:20
LHR
-
ABE
2 stops16h 40m
Delta
Mon 20/412:53
ABE
-
LHR
2 stops18h 42m
Delta
Deal found 20/3£697
Sun 12/418:35
LHR
-
ABE
2 stops51h 44m
KLM
Sun 19/417:59
ABE
-
LHR
1 stop31h 26m
KLM
Deal found 19/3£712
Wed 15/418:05
LHR
-
ABE
2 stops22h 22m
American Airlines
Thu 23/406:04
ABE
-
LHR
2 stops18h 46m
American Airlines
Deal found 20/3£715
Tue 14/408:15
LHR
-
ABE
2 stops20h 13m
American Airlines
Fri 24/412:00
ABE
-
LHR
1 stop16h 05m
American Airlines
Deal found 20/3£717

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 23 March 2026.

Return from

£350

One-way from

£457

Popular in

July

Cheapest in

September

Average price

£409
Icelandair
  • Icelandair
  • 28/4-16/5
  • 2 total stops
  • 21h 55m total
  • London to New York
Search Deals
Delta
  • Delta
  • 25/5
  • 1 total stop
  • 16h 03m total
  • London to Allentown
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (£29 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£9 potential savings vs. average return price).
Search Deals
Average for return flights in March 2026
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 23 March 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

Sat 18/4

09:20-17:19

1 stop12h 59m

Allentown-Bethlehem

Sun 19/4

17:59-06:25

1 stop31h 26m

£697

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Wed 15/4

08:55-23:00

2 stops19h 05m

Allentown-Bethlehem

Wed 22/4

17:59-06:25

1 stop31h 26m

£717

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Sun 12/4

18:55-23:00

2 stops33h 05m

Allentown-Bethlehem

Sun 19/4

17:59-08:50

2 stops33h 51m

£737

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Wed 15/4

09:20-17:19

1 stop12h 59m

Allentown-Bethlehem

Sat 18/4

17:59-06:25

1 stop31h 26m

£756

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Wed 22/4

07:30-09:48

2 stops31h 18m

Allentown-Bethlehem

Sun 26/4

17:43-11:20

2 stops36h 37m

£787

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Wed 3/6

11:10-23:19

1 stop17h 09m

Allentown-Bethlehem

Mon 15/6

17:06-11:15

1 stop13h 09m

£796
Fastest return journey

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Tue 5/5

06:50-17:00

2 stops15h 10m

Allentown-Bethlehem

Tue 12/5

17:40-11:55

1 stop13h 15m

£861
Cheapest one-way

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Mon 25/5

11:15-22:18

1 stop16h 03m

£457
Fastest single journey

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Thu 28/5

09:20-17:28

1 stop13h 08m

£513

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Fri 29/5

09:20-17:28

1 stop13h 08m

£558

Flights are sorted by cheapest return flights first.

Deals found on 19/3

Showing 1-10 of 18 resultsSorted by cheapest first
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 14 hours 35 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, London offers the quickest one-way flight (14 hours 35 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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