How long is the flight from London to Allentown?

Airlines like Virgin Atlantic and Delta fly from London to Allentown in about 14h 36m. The time it takes to get you to your destination can typically vary by up to 13h 25m. 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 £468 on this airline.

What is the cheapest day to fly from London to Allentown?

Travellers seeking maximum savings on their London to Allentown flight should consider departing on Wednesday at midday when fares are most often at their lowest. Saturday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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 day to fly round-trip from London to Allentown?

Flights from London to Allentown are found to be more expensive on Saturday. This shouldn't discourage you from searching as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Allentown.

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

It’s typically best to fly out from London to Allentown at midday. Doing so could potentially save you 7% on the flight price compared to flying in the morning, which is usually more expensive.

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.

£422+ Cheap Flights from London to Allentown

Cheap flight deals from London to Allentown

Round-trip from	£517
One-way from	£422

Virgin Atlantic
5/3-8/3
3 total stops
71h 58m total
London to Allentown

Search Deals

American Airlines
12/12
2 total stops
35h 56m total
London to Allentown

Search Deals

Find flight deals from London to Allentown

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 15 September 2025.

Fri 3/1013:05LHR - ABE

1 stop14h 36mVirgin Atlantic

Mon 6/1006:00ABE - LHR

1 stop26h 30mVirgin Atlantic

Deal found 13/9£527

Fri 3/1016:50LHR - ABE

2 stops24h 14mDelta

Mon 6/1018:00ABE - LHR

1 stop14h 30mDelta

Deal found 14/9£545

Wed 17/914:10LHR - ABE

1 stop12h 44mUnited Airlines

Mon 6/1013:00ABE - LHR

1 stop12h 20mUnited Airlines

Deal found 15/9£1,029

Fri 19/1208:55LHR - ABE

1 stop13h 19mDelta

Fri 2/112:50ABE - LHR

1 stop14h 00mDelta

Deal found 14/9£1,046

Fri 19/1207:40LHR - ABE

1 stop13h 50mUnited Airlines

Fri 2/114:30ABE - LHR

2 stops15h 20mUnited Airlines

Deal found 14/9£1,449

Fri 19/1218:00LHR - ABE

2 stops24h 55mMultiple Airlines

Fri 2/106:17ABE - LHR

2 stops19h 13mMultiple Airlines

Deal found 14/9£3,091

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 15 September 2025.

Fri 3/1013:05LHR - ABE

1 stop14h 36mVirgin Atlantic

Mon 6/1006:00ABE - LHR

1 stop26h 30mVirgin Atlantic

Deal found 13/9£527

Fri 3/1018:30LHR - ABE

2 stops28h 01mDelta

Mon 6/1018:00ABE - LHR

1 stop14h 30mDelta

Deal found 13/9£545

Fri 19/1207:40LHR - ABE

1 stop13h 50mUnited Airlines

Fri 2/114:30ABE - LHR

2 stops15h 20mUnited Airlines

Deal found 14/9£1,449

Fri 19/1208:55LHR - ABE

1 stop13h 19mDelta

Fri 2/112:50ABE - LHR

1 stop14h 00mDelta

Deal found 14/9£1,046

Last-minute flights from London to Allentown
Discover last-minute flight deals from London to Allentown. Data last updated 15 September 2025 and is based on user searches.

Wed 17/914:10LHR - ABE

1 stop12h 44mUnited Airlines

Mon 6/1013:00ABE - LHR

1 stop12h 20mUnited Airlines

Deal found 15/9£1,029

Fri 3/1013:05LHR - ABE

1 stop14h 36mVirgin Atlantic

Mon 6/1006:00ABE - LHR

1 stop26h 30mVirgin Atlantic

Deal found 13/9£527

Fri 3/1016:50LHR - ABE

2 stops24h 14mDelta

Mon 6/1018:00ABE - LHR

1 stop14h 30mDelta

Deal found 14/9£545

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 15 September 2025.

Fri 12/1216:10LHR - ABE

2 stops35h 56mAmerican Airlines

Deal found 14/9£422

Sat 13/1206:30LHR - ABE

2 stops15h 44mDelta

Deal found 14/9£442

Fri 12/1208:55LHR - ABE

1 stop13h 19mDelta

Deal found 14/9£455

Thu 30/1006:30LHR - ABE

2 stops19h 45mDelta

Deal found 15/9£487

Thu 30/1008:55LHR - ABE

1 stop17h 20mKLM

Deal found 15/9£500

Mon 13/1009:20LHR - ABE

1 stop17h 55mDelta

Deal found 15/9£531

Sat 25/1006:30LHR - ABE

2 stops15h 50mDelta

Deal found 14/9£559

Fri 19/1206:30LHR - ABE

2 stops34h 40mDelta

Deal found 14/9£694

Sat 20/1208:55LHR - ABE

1 stop13h 21mDelta

Deal found 14/9£707

Thu 30/1014:50LHR - ABE

3 stops33h 22mMultiple Airlines

Deal found 15/9£721

Fly from

Fly to

Route

Depart

Return

Price

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Fri 3/10

13:05-22:41

1 stop14h 36m

Allentown-Bethlehem

Mon 6/10

06:00-13:30

1 stop26h 30m

£527

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Fri 3/10

18:30-17:31

2 stops28h 01m

Allentown-Bethlehem

Mon 6/10

18:00-13:30

1 stop14h 30m

£545

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Fri 19/12

08:55-17:14

1 stop13h 19m

Allentown-Bethlehem

Fri 2/1

12:50-07:50

1 stop14h 00m

£1,046

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Fri 19/12

07:40-16:30

1 stop13h 50m

Allentown-Bethlehem

Fri 2/1

14:30-10:50

2 stops15h 20m

£1,449

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Fri 12/12

16:10-23:06

2 stops35h 56m

£422

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Sat 13/12

06:30-17:14

2 stops15h 44m

£442

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Fri 12/12

08:55-17:14

1 stop13h 19m

£455

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Thu 30/10

06:30-22:15

2 stops19h 45m

£487

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Thu 30/10

08:55-22:15

1 stop17h 20m

£500

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Mon 13/10

09:20-22:15

1 stop17h 55m

£531

Flights are sorted by cheapest return flights first.

Deals found on 14/9

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

Atlanta (ATL) – chosen by Cheapflights users on 55% of one-stop itineraries from London to Allentown on Cheapflights.

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

Philadelphia (PHL) is the most affordable one-stop option, with an average return flight price of £531.

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

Flights via Philadelphia (PHL) have the shortest average one-way travel time for one-stop routes: 11h 53m.

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 Delta fly from London to Allentown in about 14h 36m. The time it takes to get you to your destination can typically vary by up to 13h 25m. 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 £468 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for London to Allentown

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Top airline flying from London to Allentown

Airline	Cheapest	Average	Flexibility	On-time
Finnair	Cheapest£468	Average£559	FlexibilityNo cancel fee	On-time76%	Search Finnair flights

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How does Cheapflights help users find flights from London to Allentown?

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 £422

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 12/12. 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 15 September 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 15 September 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’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?

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Alternative routes for London to Allentown

See prices for flight routes from nearby airports that may be better suited for you.

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 15 September 2025.