How long is the flight from London to Allentown?

Airlines like Virgin Atlantic and United Airlines fly from London to Allentown in about 18h 57m. The time it takes to get you to your destination can typically vary by up to 8h 16m. 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 £535 on this airline. This flight start at 9% lower than the current average price 3 months from now.

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.

£381+ Cheap Flights from London to Allentown

Cheap flight deals from London to Allentown

Round-trip from	£642
One-way from	£381
Popular in	December
Cheapest in	April
Average price	£632

Air France
1/2-7/2
4 total stops
92h 23m total
London to Allentown

Search Deals

Delta
9/12
2 total stops
18h 31m total
London to Allentown

Search Deals

Highest demand for flights based on searches. 10% potential increase in price (£53 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease (£20 potential savings vs. average return price).

Search Deals

Average for round-trip flights in October 2025

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 15 October 2025.

Tue 11/1113:35LHR - ABE

1 stop27h 13mUnited Airlines

Tue 18/1117:22ABE - LHR

1 stop12h 53mUnited Airlines

Deal found 14/10£684

Thu 27/1113:35LHR - ABE

1 stop27h 13mUnited Airlines

Thu 4/1213:00ABE - LHR

1 stop11h 55mUnited Airlines

Deal found 13/10£733

Fri 28/1109:00LHR - ABE

2 stops17h 41mUnited Airlines

Fri 5/1206:30ABE - LHR

1 stop18h 25mUnited Airlines

Deal found 14/10£742

Fri 14/1108:40LHR - ABE

2 stops18h 32mVirgin Atlantic

Fri 21/1118:00ABE - LHR

2 stops34h 05mVirgin Atlantic

Deal found 14/10£757

Thu 30/1012:30LHR - ABE

1 stop13h 45mVirgin Atlantic

Fri 31/1014:30ABE - LHR

1 stop13h 20mVirgin Atlantic

Deal found 14/10£1,066

Tue 11/1114:50LHR - ABE

2 stops36h 22mWestJet

Tue 18/1112:56ABE - LHR

2 stops18h 54mWestJet

Deal found 14/10£7,546

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 October 2025.

Sun 1/208:55LHR - ABE

1 stop18h 57mVirgin Atlantic

Sat 7/217:40ABE - LHR

1 stop13h 00mVirgin Atlantic

Deal found 14/10£643

Tue 11/1113:35LHR - ABE

1 stop27h 13mUnited Airlines

Tue 18/1117:22ABE - LHR

1 stop12h 53mUnited Airlines

Deal found 14/10£684

Fri 27/313:30LHR - ABE

2 stops14h 44mAmerican Airlines

Tue 31/313:48ABE - LHR

2 stops12h 37mAmerican Airlines

Deal found 14/10£813

Thu 27/1113:35LHR - ABE

1 stop27h 13mUnited Airlines

Thu 4/1213:00ABE - LHR

1 stop11h 55mUnited Airlines

Deal found 13/10£733

Fri 14/1108:40LHR - ABE

2 stops18h 32mVirgin Atlantic

Fri 21/1118:00ABE - LHR

2 stops34h 05mVirgin Atlantic

Deal found 14/10£757

Fri 28/1109:00LHR - ABE

2 stops17h 41mUnited Airlines

Fri 5/1213:00ABE - LHR

2 stops37h 10mUnited Airlines

Deal found 14/10£742

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

Thu 30/1012:30LHR - ABE

1 stop13h 45mVirgin Atlantic

Fri 31/1014:30ABE - LHR

1 stop13h 20mVirgin Atlantic

Deal found 14/10£1,066

Tue 11/1113:35LHR - ABE

1 stop27h 13mUnited Airlines

Tue 18/1117:22ABE - LHR

1 stop12h 53mUnited Airlines

Deal found 14/10£684

Tue 11/1114:50LHR - ABE

2 stops36h 22mWestJet

Tue 18/1112:56ABE - LHR

2 stops18h 54mWestJet

Deal found 14/10£7,546

Fri 14/1108:40LHR - ABE

2 stops18h 32mVirgin Atlantic

Fri 21/1118:00ABE - LHR

2 stops34h 05mVirgin Atlantic

Deal found 14/10£757

Thu 27/1113:35LHR - ABE

1 stop27h 13mUnited Airlines

Thu 4/1213:00ABE - LHR

1 stop11h 55mUnited Airlines

Deal found 13/10£733

Fri 28/1109:00LHR - ABE

2 stops17h 41mUnited Airlines

Fri 5/1206:30ABE - LHR

1 stop18h 25mUnited Airlines

Deal found 14/10£742

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 October 2025.

Tue 9/1208:40LHR - ABE

2 stops18h 31mDelta

Deal found 15/10£381

Wed 12/1108:55LHR - ABE

1 stop13h 24mDelta

Deal found 15/10£460

Tue 18/1108:55LHR - ABE

1 stop13h 24mDelta

Deal found 13/10£462

Fri 14/1106:30LHR - ABE

2 stops39h 49mVirgin Atlantic

Deal found 14/10£470

Fri 21/1108:55LHR - ABE

1 stop13h 24mDelta

Deal found 15/10£502

Thu 20/1108:55LHR - ABE

1 stop13h 24mDelta

Deal found 13/10£504

Tue 9/1220:35LHR - ABE

3 stops50h 24mMultiple Airlines

Deal found 15/10£543

Thu 6/1108:55LHR - ABE

1 stop13h 25mDelta

Deal found 15/10£624

Fri 24/1008:40LHR - ABE

2 stops32h 26mDelta

Deal found 13/10£697

Sat 25/1009:40LHR - ABE

2 stops17h 35mDelta

Deal found 13/10£711

Fly from

Fly to

Route

Depart

Return

Price

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Sun 1/2

08:55-22:52

1 stop18h 57m

Allentown-Bethlehem

Sat 7/2

17:40-11:40

1 stop13h 00m

£643

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Tue 11/11

13:35-11:48

1 stop27h 13m

Allentown-Bethlehem

Tue 18/11

17:22-11:15

1 stop12h 53m

£684

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Thu 27/11

13:35-11:48

1 stop27h 13m

Allentown-Bethlehem

Thu 4/12

13:00-05:55

1 stop11h 55m

£733

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Fri 28/11

09:00-21:41

2 stops17h 41m

Allentown-Bethlehem

Fri 5/12

13:00-07:10

2 stops37h 10m

£742

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Fri 14/11

08:40-22:12

2 stops18h 32m

Allentown-Bethlehem

Fri 21/11

18:00-09:05

2 stops34h 05m

£757

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Fri 27/3

13:30-00:14

2 stops14h 44m

Allentown-Bethlehem

Tue 31/3

13:48-07:25

2 stops12h 37m

£813

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Wed 19/11

08:55-17:19

1 stop13h 24m

£462

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Tue 18/11

08:55-17:19

1 stop13h 24m

£462

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Fri 14/11

06:30-17:19

2 stops39h 49m

£470

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Thu 20/11

08:55-17:19

1 stop13h 24m

£504

Flights are sorted by cheapest return flights first.

Deals found on 13/10

Showing 1-10 of 16 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, April is the cheapest month in which you can book a flight from London to Allentown (average of £289). Flying from London to Allentown in June is currently the most expensive (average of £359). 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 54% 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 £488.

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.

Reviews of airlines servicing Allentown

Check out reviews from past customers who have flown with Virgin Atlantic from London to Allentown to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Virgin Atlantic

7.4

Good

667 reviews

Check prices

Reviews

1 / 20

6.0

Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!

Virgin Atlantic

7.4

Good

667 reviews

Virgin Atlantic

7.4

Good

667 reviews

Check prices

Reviews

1 / 20

6.0

Good

Pratap,Aug 2025

JFK - LHR

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 18h 57m. The time it takes to get you to your destination can typically vary by up to 8h 16m. 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 £535 on this airline. This flight start at 9% lower than the current average price 3 months from now.
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, April is the cheapest month in which you can book a flight from London to Allentown (average of £289). Flying from London to Allentown in June is currently the most expensive (average of £359). 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

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£535	Average£605	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 £381

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 9/12. 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

Popular in

Cheapest in

Average price

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 October 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 October 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.

Reviews of airlines servicing Allentown

Check out reviews from past customers who have flown with Virgin Atlantic from London to Allentown to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

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?

Browse thousands of different options on Cheapflights for your next trip

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

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

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

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

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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 October 2025.