How long is the flight from London to Allentown?

Airlines like Virgin Atlantic and United Airlines fly from London to Allentown in about 15h 48m. The time it takes to get you to your destination can typically vary by up to 1h 17m. The distance between London and Allentown is about 3507 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

What is the cheapest airline to fly from London to Allentown round-trip?

Our cheapest airline available from London to Allentown is Finnair. Our recent data shows that you can find tickets from as low as £541 on this airline.

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.

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).

What is the cheapest time of day to fly from LON to ABE?

When flying from London to Allentown, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What airport do you fly into for flights to Allentown from London?

If you book a flight to Allentown from London, you will be flying to Allentown-Bethlehem, which is the city’s only airport. Allentown-Bethlehem (ABE) is located 3.9 mi from the center of Allentown. There are 0 flights from London to Allentown-Bethlehem per day from 1 airline.

Can I find deals for flights from London to Allentown that include hotel bookings?

Yes. In addition to deals on London to Allentown flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from London to Allentown?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Allentown.

Can I find deals for business class flights from London to Allentown?

Yes. Cheapflights offers flight deals from London to Allentown by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£400+ Cheap Flights from London to Allentown

Cheap flight deals from London to Allentown

Round-trip from	£811
One-way from	£400

American Airlines
27/3-31/3
3 total stops
30h 03m total
London to Allentown

Search Deals

Delta
3/3
1 total stop
13h 23m total
London to Allentown

Search Deals

Find flight deals from London to Allentown

Enter your travel dates to find the best prices.

Cheapest flights from London to Allentown
Explore the most affordable flight options available from London to Allentown. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 November 2025.

Tue 25/1108:30LHR - ABE

2 stops17h 46mUnited Airlines

Tue 2/1213:00ABE - LHR

1 stop11h 55mUnited Airlines

Deal found 11/11£734

Sat 27/1208:55LHR - ABE

1 stop13h 29mVirgin Atlantic

Sat 3/118:04ABE - LHR

1 stop33h 56mVirgin Atlantic

Deal found 12/11£886

Wed 17/1213:35LHR - ABE

1 stop13h 11mUnited Airlines

Thu 1/106:17ABE - LHR

1 stop18h 38mUnited Airlines

Deal found 12/11£1,138

Sat 27/1218:00LHR - ABE

3 stops33h 59mMultiple Airlines

Sat 3/107:15ABE - LHR

2 stops28h 35mMultiple Airlines

Deal found 12/11£1,147

Sat 27/1207:40LHR - ABE

1 stop19h 07mUnited Airlines

Sat 3/106:17ABE - LHR

2 stops23h 08mUnited Airlines

Deal found 11/11£1,198

Wed 17/1207:40LHR - ABE

1 stop14h 07mUnited Airlines

Fri 2/117:07ABE - LHR

1 stop31h 48mUnited Airlines

Deal found 12/11£1,271

Tue 16/1213:35LHR - ABE

1 stop13h 11mUnited Airlines

Fri 2/117:07ABE - LHR

1 stop31h 48mUnited Airlines

Deal found 11/11£1,272

Fri 26/1213:35LHR - ABE

1 stop13h 12mUnited Airlines

Fri 2/117:07ABE - LHR

1 stop31h 48mUnited Airlines

Deal found 10/11£1,302

Best flights from London to Allentown
Discover carefully curated flight deals from London to Allentown that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 14 November 2025.

Thu 8/106:30LHR - ABE

2 stops15h 48mVirgin Atlantic

Thu 22/112:47ABE - LHR

2 stops14h 58mVirgin Atlantic

Deal found 11/11£602

Thu 8/118:00LHR - ABE

2 stops32h 26mMultiple Airlines

Thu 22/108:30ABE - LHR

3 stops41h 40mMultiple Airlines

Deal found 11/11£656

Fri 9/109:10LHR - ABE

2 stops17h 05mUnited Airlines

Sat 17/111:30ABE - LHR

2 stops14h 40mUnited Airlines

Deal found 11/11£790

Fri 27/319:10LHR - ABE

2 stops19h 45mAmerican Airlines

Tue 31/317:47ABE - LHR

2 stops12h 28mAmerican Airlines

Deal found 12/11£811

Fri 27/312:30LHR - ABE

1 stop14h 22mDelta

Tue 31/313:00ABE - LHR

1 stop12h 45mDelta

Deal found 12/11£828

Last-minute flights from London to Allentown
Discover last-minute flight deals from London to Allentown. Data last updated 14 November 2025 and is based on user searches.

Tue 25/1108:30LHR - ABE

2 stops17h 46mUnited Airlines

Tue 2/1213:00ABE - LHR

1 stop11h 55mUnited Airlines

Deal found 11/11£734

Tue 16/1213:35LHR - ABE

1 stop13h 11mUnited Airlines

Fri 2/117:07ABE - LHR

1 stop31h 48mUnited Airlines

Deal found 11/11£1,272

Wed 17/1213:35LHR - ABE

1 stop13h 11mUnited Airlines

Thu 1/106:17ABE - LHR

1 stop18h 38mUnited Airlines

Deal found 12/11£1,138

Wed 17/1207:40LHR - ABE

1 stop14h 07mUnited Airlines

Fri 2/117:07ABE - LHR

1 stop31h 48mUnited Airlines

Deal found 12/11£1,271

Fri 26/1213:35LHR - ABE

1 stop13h 12mUnited Airlines

Fri 2/117:07ABE - LHR

1 stop31h 48mUnited Airlines

Deal found 10/11£1,302

Sat 27/1208:55LHR - ABE

1 stop13h 29mVirgin Atlantic

Sat 3/118:04ABE - LHR

1 stop33h 56mVirgin Atlantic

Deal found 12/11£886

Sat 27/1218:00LHR - ABE

3 stops33h 59mMultiple Airlines

Sat 3/107:15ABE - LHR

2 stops28h 35mMultiple Airlines

Deal found 12/11£1,147

Sat 27/1207:40LHR - ABE

1 stop19h 07mUnited Airlines

Sat 3/106:17ABE - LHR

2 stops23h 08mUnited Airlines

Deal found 11/11£1,198

One-way flights from London to Allentown
Search for one-way flight options from London to Allentown. Find affordable one-way fares based on user searches. Data last updated 14 November 2025.

Tue 3/308:55LHR - ABE

1 stop13h 23mDelta

Deal found 11/11£400

Tue 16/1208:55LHR - ABE

1 stop13h 19mDelta

Deal found 11/11£533

Fri 20/312:30LHR - ABE

1 stop14h 22mDelta

Deal found 12/11£637

Mon 15/1208:55LHR - ABE

1 stop13h 19mDelta

Deal found 10/11£667

Sun 22/312:30LHR - ABE

1 stop14h 22mDelta

Deal found 12/11£839

Tue 30/1208:55LHR - ABE

1 stop13h 29mDelta

Deal found 10/11£1,268

Sat 3/108:55LHR - ABE

1 stop13h 29mDelta

Deal found 12/11£8,069

Fly from

Fly to

Route

Depart

Return

Price

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Thu 8/1

06:30-17:18

2 stops15h 48m

Allentown-Bethlehem

Thu 22/1

12:47-08:45

2 stops14h 58m

£602

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Thu 8/1

18:00-21:26

2 stops32h 26m

Allentown-Bethlehem

Thu 22/1

08:30-07:10

3 stops41h 40m

£656

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Fri 9/1

09:10-21:15

2 stops17h 05m

Allentown-Bethlehem

Sat 17/1

11:30-07:10

2 stops14h 40m

£790

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Fri 27/3

19:10-10:55

2 stops19h 45m

Allentown-Bethlehem

Tue 31/3

17:47-11:15

2 stops12h 28m

£811

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Fri 27/3

12:30-22:52

1 stop14h 22m

Allentown-Bethlehem

Tue 31/3

13:00-06:45

1 stop12h 45m

£828

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Tue 3/3

08:55-17:18

1 stop13h 23m

£400

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Tue 16/12

08:55-17:14

1 stop13h 19m

£533

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Sat 21/3

12:30-22:52

1 stop14h 22m

£637

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Fri 20/3

12:30-22:52

1 stop14h 22m

£637

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Mon 15/12

08:55-17:14

1 stop13h 19m

£667

Flights are sorted by cheapest return flights first.

Deals found on 11/11

Showing 1-10 of 14 results

Best time to book a flight from London to Allentown

Have a flexible travel schedule? Discover the best time to fly to Allentown from London 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 from London to Allentown

What is the cheapest month to book a flight from London to Allentown?

Currently, November is the cheapest month in which you can book a flight from London to Allentown (average of £217). Flying from London to Allentown in June is currently the most expensive (average of £363). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What’s the top stopover airport for flights from London to Allentown?

Atlanta (ATL) – chosen by Cheapflights users on 52% of one-stop itineraries from London to Allentown on Cheapflights.

What’s the cheapest stopover airport for flights from London to Allentown?

Charlotte (CLT) is the most affordable one-stop option, with an average return flight price of £494.

What’s the fastest stopover option from London to Allentown?

Flights via Charlotte (CLT) have the shortest average one-way travel time for one-stop routes: 12h 08m.

Which airport typically offers the quickest stopover for flights from London to Allentown?

Flights via Charlotte (CLT) offer the fastest connection on this route, with an average stopover time of 1h 00m.

Related info for your journey

What airport do you fly into for flights to Allentown from London?
If you book a flight to Allentown from London, you will be flying to Allentown-Bethlehem, which is the city’s only airport. Allentown-Bethlehem (ABE) is located 3.9 mi from the center of Allentown. There are 0 flights from London to Allentown-Bethlehem per day from 1 airline.
How long is the flight from London to Allentown?
Airlines like Virgin Atlantic and United Airlines fly from London to Allentown in about 15h 48m. The time it takes to get you to your destination can typically vary by up to 1h 17m. The distance between London and Allentown is about 3507 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.
What is the cheapest airline to fly from London to Allentown round-trip?
Our cheapest airline available from London to Allentown is Finnair. Our recent data shows that you can find tickets from as low as £541 on this airline.
Can I find deals for flights from London to Allentown that include hotel bookings?
Yes. In addition to deals on London to Allentown flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from London to Allentown?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Allentown.
Can I find deals for business class flights from London to Allentown?
Yes. Cheapflights offers flight deals from London to Allentown by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from London to Allentown?
Currently, November is the cheapest month in which you can book a flight from London to Allentown (average of £217). Flying from London to Allentown in June is currently the most expensive (average of £363). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top airline flying from London to Allentown

Airline	Cheapest	Average	Flexibility	On-time
Finnair	Cheapest£541	Average£612	FlexibilityNo cancel fee	On-time76%	Search Finnair flights

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Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from London to Allentown. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from London to Allentown?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Allentown from London.

Can Cheapflights find flights from London to Allentown with no change fees?

Need flexible booking options for your flight to Allentown from London? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from London to Allentown become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Allentown from London today and book when prices fit your budget.

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Cheap flights from London to Allentown from £400

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 3/3. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from London to Allentown

Round-trip from

One-way from

Find flight deals from London to Allentown

Cheapest flights from London to AllentownExplore the most affordable flight options available from London to Allentown. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 November 2025.

Explore the most affordable flight options available from London to Allentown. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 November 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from London to Allentown that are best for you.

Best time to book a flight from London to Allentown

Have a flexible travel schedule? Discover the best time to fly to Allentown from London with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from London to Allentown

What is the cheapest month to book a flight from London to Allentown?

What’s the top stopover airport for flights from London to Allentown?

Share of one-stop return flights from London to Allentown chosen by Cheapflights users in the past 12 months, using the same stopover each way.

What’s the cheapest stopover airport for flights from London to Allentown?

Average return fare for one-stop flights from London to Allentown, chosen by Cheapflights users in the past 12 months, with the same stopover each way.

What’s the fastest stopover option from London to Allentown?

Shortest average travel time for one-stop one-way flights from London to Allentown, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.

Which airport typically offers the quickest stopover for flights from London to Allentown?

Average stopover duration for one-stop one-way flights from London to Allentown, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Related info for your journey

Find useful and relevant information for your journey from London to Allentown. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly into for flights to Allentown from London?

How long is the flight from London to Allentown?

What is the cheapest airline to fly from London to Allentown round-trip?

Can I find deals for flights from London to Allentown that include hotel bookings?

How can I find direct flights from London to Allentown?

Can I find deals for business class flights from London to Allentown?

What is the cheapest month to book a flight from London to Allentown?

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Alternative routes for London to Allentown

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Top airline flying from London to Allentown

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Cheapest flights from London to Allentown
Explore the most affordable flight options available from London to Allentown. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 November 2025.