What are the cheapest airlines flying from London to Allentown round-trip?

Our cheapest airline available from London to Allentown is American Airlines. Our recent data shows that you can find tickets from as low as £562 on this airline. Additional options worth looking into are Delta and Virgin Atlantic, starting at £669 and £703 round-trip. These flights start at 12% lower than the current average price 3 months from now.

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.

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 month to fly from London to Allentown?

April is one of the best times of the year to fly to Allentown from London. Prices for April average £640 per person but you can even find prices for as low as £480. The most expensive prices can be found in the month of August. Opting for a April flight can save you 86% on your journey compared to booking in August

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.

£562+ Flights from London to Allentown

Cheap flight deals from London to Allentown

Round-trip from	£562
Popular in	August
Cheapest in	April
Average price	£506

American Airlines
14/7-20/7
2 total stops
64h 10m total
London to Allentown

Search Deals

Highest demand for flights based on searches. 20% potential increase in price (£121 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 10% potential price decrease (£46 potential savings vs. average return price).

Search Deals

Average for round-trip flights in June 2025

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 19 June 2025.

Mon 14/715:00LHR - ABE

1 stop33h 33mAmerican Airlines

Sun 20/720:03ABE - LHR

1 stop30h 37mAmerican Airlines

Deal found 18/6£562

Thu 26/609:00LHR - ABE

2 stops18h 29mDelta

Wed 23/712:55ABE - LHR

2 stops15h 20mDelta

Deal found 17/6£608

Sat 2/813:50LHR - ABE

2 stops37h 40mVirgin Atlantic

Sat 9/818:14ABE - LHR

2 stops35h 16mVirgin Atlantic

Deal found 18/6£703

Sat 23/808:30LHR - ABE

1 stop13h 23mUnited Airlines

Sun 31/817:28ABE - LHR

1 stop13h 17mUnited Airlines

Deal found 18/6£952

Sat 2/819:50LHR - ABE

3 stops32h 24mMultiple Airlines

Sat 9/806:00ABE - LHR

3 stops43h 30mMultiple Airlines

Deal found 18/6£1,084

Sun 3/814:10LHR - ABE

2 stops37h 20mWestJet

Sun 10/812:55ABE - LHR

2 stops42h 10mWestJet

Deal found 18/6£5,263

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 19 June 2025.

Mon 14/715:00LHR - ABE

1 stop33h 33mAmerican Airlines

Sun 20/720:03ABE - LHR

1 stop30h 37mAmerican Airlines

Deal found 18/6£562

Thu 24/706:30LHR - ABE

2 stops21h 00mDelta

Thu 18/913:00ABE - LHR

2 stops16h 15mDelta

Deal found 18/6£669

Sat 2/813:50LHR - ABE

2 stops37h 40mVirgin Atlantic

Sat 9/818:14ABE - LHR

2 stops35h 16mVirgin Atlantic

Deal found 18/6£703

Sat 23/808:30LHR - ABE

1 stop13h 23mUnited Airlines

Sun 31/817:28ABE - LHR

1 stop13h 17mUnited Airlines

Deal found 18/6£952

Sat 2/819:50LHR - ABE

3 stops32h 24mMultiple Airlines

Sat 9/806:00ABE - LHR

3 stops43h 30mMultiple Airlines

Deal found 18/6£1,084

Sun 3/814:10LHR - ABE

2 stops37h 20mWestJet

Sun 10/812:55ABE - LHR

2 stops42h 10mWestJet

Deal found 18/6£5,263

Last-minute flights from London to Allentown
Discover last-minute flight deals from London to Allentown. Data last updated 19 June 2025 and is based on user searches.

Thu 26/609:00LHR - ABE

2 stops18h 29mDelta

Wed 23/712:55ABE - LHR

2 stops15h 20mDelta

Deal found 17/6£608

Mon 14/715:00LHR - ABE

1 stop33h 33mAmerican Airlines

Sun 20/720:03ABE - LHR

1 stop30h 37mAmerican Airlines

Deal found 18/6£562

Wed 16/706:50LHR - ABE

2 stops15h 10mUnited Airlines

Wed 23/717:35ABE - LHR

1 stop13h 10mUnited Airlines

Deal found 18/6£960

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Mon 14/7

15:00-19:33

1 stop33h 33m

Allentown-Bethlehem

Sun 20/7

20:03-07:40

1 stop30h 37m

£562

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Thu 24/7

06:30-22:30

2 stops21h 00m

Allentown-Bethlehem

Thu 18/9

17:40-13:30

1 stop14h 50m

£669

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Sat 2/8

13:50-22:30

2 stops37h 40m

Allentown-Bethlehem

Sat 9/8

18:14-10:30

2 stops35h 16m

£703

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Sat 23/8

08:30-16:53

1 stop13h 23m

Allentown-Bethlehem

Sun 31/8

17:28-11:45

1 stop13h 17m

£952

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Sat 2/8

19:50-23:14

3 stops32h 24m

Allentown-Bethlehem

Sat 9/8

06:00-06:30

3 stops43h 30m

£1,084

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Sun 3/8

14:10-22:30

2 stops37h 20m

Allentown-Bethlehem

Sun 10/8

12:55-12:05

2 stops42h 10m

£5,263

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Thu 3/7

11:20-22:29

1 stop16h 09m

£2,139

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Tue 8/7

08:00-21:55

2 stops18h 55m

£2,339

Flights are sorted by cheapest return flights first.

Deals found on 17/6

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

Rainfall in Allentown 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

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).

Reviews of airlines servicing Allentown

Delta

8.0

Very Good

7,964 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Delta

8.0

Very Good

7,964 reviews

Delta

8.0

Very Good

7,964 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

United Airlines

7.4

Good

8,810 reviews

Delta

8.0

Very Good

7,964 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Virgin Atlantic

7.4

Good

653 reviews

Delta

8.0

Very Good

7,964 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

American Airlines

7.2

Good

10,000 reviews

Delta

8.0

Very Good

7,964 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

WestJet

7.2

Good

2,878 reviews

Delta

8.0

Very Good

7,964 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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.
What are the cheapest airlines flying from London to Allentown round-trip?
Our cheapest airline available from London to Allentown is American Airlines. Our recent data shows that you can find tickets from as low as £562 on this airline. Additional options worth looking into are Delta and Virgin Atlantic, starting at £669 and £703 round-trip. These flights start at 12% 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for London to Allentown

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Gatwick to Philadelphia flights

Stansted to LaGuardia flights

London City to Philadelphia flights

Luton to Dulles Intl flights

London City to Reagan-National flights

Birmingham to John F Kennedy Intl flights

Luton to LaGuardia flights

Birmingham to Newark flights

Birmingham to LaGuardia flights

Manchester to Dulles Intl flights

Manchester to Philadelphia flights

Gatwick to Pittsburgh flights

Manchester to Reagan-National flights

Stansted to Philadelphia flights

Newcastle upon Tyne to John F Kennedy Intl flights

Edinburgh to Philadelphia flights

Luton to Philadelphia flights

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Leeds to John F Kennedy Intl flights

Newcastle upon Tyne to Newark flights

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Newcastle upon Tyne to LaGuardia flights

Top airline flying from London to Allentown

Airline	Cheapest	Average	Flexibility	On-time
Finnair	Cheapest£460	Average£565	FlexibilityNo cancel fee	On-time76%	Search Finnair flights

Fly with Cheapflights

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 £562

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 14/7. 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

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 19 June 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 19 June 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

Rainfall in Allentown by month

Plan your trip to Allentown by taking into account the average rainfall totals by month.

Temperature in Allentown by month

Plan your trip to Allentown by taking into account the average temperature totals by month.

Reviews of airlines servicing Allentown

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?

What are the cheapest airlines flying 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?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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?

100% Free

Book with Flexibility

Travel Smart

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 19 June 2025.