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£420+ 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 3/11. Fares are subject to change and may not be available on all flights or dates of travel.
— ABE
28 Jul — 4 Aug1
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 28 June 2026.

Mon 2/1116:50
LHR
-
ABE
2 stops34h 39m
Virgin Atlantic
Sun 8/1118:00
ABE
-
LHR
1 stop32h 50m
Virgin Atlantic
Deal found 27/6£685
Thu 17/908:45
LHR
-
ABE
2 stops29h 54m
United Airlines
Mon 21/910:32
ABE
-
LHR
1 stop20h 23m
United Airlines
Deal found 24/6£694
Fri 3/714:45
LHR
-
ABE
1 stop13h 23m
American Airlines
Sun 5/719:09
ABE
-
LHR
1 stop12h 01m
American Airlines
Deal found 25/6£736
Fri 3/709:15
LHR
-
ABE
1 stop20h 08m
Multiple Airlines
Mon 6/717:12
ABE
-
LHR
1 stop12h 18m
Multiple Airlines
Deal found 25/6£743

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 28 June 2026.

Return from

£685

One-way from

£420
Virgin Atlantic
  • Virgin Atlantic
  • 2/11-8/11
  • 3 total stops
  • 67h 29m total
  • London to Allentown
Search Deals
American Airlines
  • American Airlines
  • 3/11
  • 2 total stops
  • 28h 33m 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 28 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

Thu 17/9

08:45-09:39

2 stops29h 54m

Allentown-Bethlehem

Mon 21/9

10:32-11:55

1 stop20h 23m

£696

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Tue 14/7

11:05-09:58

1 stop27h 53m

Allentown-Bethlehem

Mon 20/7

17:41-11:55

1 stop13h 14m

£751

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Tue 14/7

09:55-23:08

2 stops18h 13m

Allentown-Bethlehem

Wed 22/7

13:08-09:50

2 stops15h 42m

£785
Fastest return journey

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Tue 14/7

08:40-23:08

2 stops19h 28m

Allentown-Bethlehem

Thu 23/7

13:08-06:25

1 stop12h 17m

£785
Cheapest one-way

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Wed 14/10

18:05-13:06

2 stops24h 01m

£456
Fastest single journey

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Wed 30/9

09:20-17:21

1 stop13h 01m

£464

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Tue 3/11

15:50-22:29

1 stop35h 39m

£465

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Tue 20/10

09:20-12:04

1 stop31h 44m

£485

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Thu 5/11

08:55-17:15

1 stop13h 20m

£507

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Fri 27/11

12:30-22:46

1 stop15h 16m

£507

Flights are sorted by cheapest return flights first.

Deals found on 25/6

Showing 1-10 of 16 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 13 hours 23 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 (13 hours 23 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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