What are the cheapest airlines flying 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 £627 on this airline. Additional options worth looking into are American Airlines and United Airlines, starting at £779 and £787 round-trip. These flights start at 7% 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?

March is one of the best times of the year to fly to Allentown from London. Prices for March average £678 per person but you can even find prices for as low as £506. The most expensive prices can be found in the month of August. Opting for a March flight can save you 87% 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.

£490+ Flights from London to Allentown

Cheap flight deals from London to Allentown

Round-trip from	£627
Popular in	August
Cheapest in	March
Average price	£589

Finnair
9/5-9/6
2 total stops
26h 10m total
London to Allentown

Search Deals

Highest demand for flights based on searches. 21% potential increase in price (£143 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 9% potential price decrease (£48 potential savings vs. average return price).

Search Deals

Average for round-trip flights in February 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 21 February 2025.

Sat 1/306:10LHR - ABE

2 stops21h 35mFinnair

Wed 30/411:00ABE - LHR

2 stops17h 50mFinnair

Deal found 20/2£490

Sat 1/310:50LHR - ABE

1 stop16h 30mVirgin Atlantic

Wed 30/406:15ABE - LHR

1 stop20h 00mVirgin Atlantic

Deal found 20/2£545

Thu 15/520:55LHR - ABE

2 stops25h 21mMultiple Airlines

Sun 18/517:40ABE - LHR

2 stops37h 35mMultiple Airlines

Deal found 21/2£593

Thu 15/509:20LHR - ABE

1 stop12h 56mDelta

Sun 18/517:40ABE - LHR

2 stops21h 20mDelta

Deal found 21/2£627

Sun 6/409:15LHR - ABE

1 stop12h 40mAmerican Airlines

Sun 13/417:25ABE - LHR

1 stop10h 40mAmerican Airlines

Deal found 20/2£779

Fri 9/506:50LHR - ABE

2 stops15h 07mUnited Airlines

Mon 9/617:35ABE - LHR

1 stop13h 10mUnited Airlines

Deal found 20/2£787

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 21 February 2025.

Fri 9/510:05LHR - ABE

1 stop15h 15mFinnair

Mon 9/618:25ABE - LHR

1 stop10h 55mFinnair

Deal found 20/2£627

Sun 6/409:15LHR - ABE

1 stop12h 40mAmerican Airlines

Sun 13/417:25ABE - LHR

1 stop10h 40mAmerican Airlines

Deal found 20/2£779

Fri 9/506:50LHR - ABE

2 stops15h 07mUnited Airlines

Mon 9/617:35ABE - LHR

1 stop13h 10mUnited Airlines

Deal found 20/2£787

Sun 6/411:20LHR - ABE

1 stop16h 09mDelta

Sun 13/417:17ABE - LHR

2 stops14h 53mDelta

Deal found 20/2£871

Sun 6/408:00LHR - ABE

3 stops35h 13mMultiple Airlines

Sun 13/407:30ABE - LHR

2 stops18h 05mMultiple Airlines

Deal found 20/2£1,097

Last-minute flights from London to Allentown
Discover last-minute flight deals from London to Allentown. Data last updated 21 February 2025 and is based on user searches.

Sat 1/306:10LHR - ABE

2 stops21h 35mFinnair

Wed 30/411:00ABE - LHR

2 stops17h 50mFinnair

Deal found 20/2£490

Sat 1/310:50LHR - ABE

1 stop16h 30mVirgin Atlantic

Wed 30/406:15ABE - LHR

1 stop20h 00mVirgin Atlantic

Deal found 20/2£545

Thu 6/313:35LHR - ABE

1 stop12h 59mUnited Airlines

Fri 21/317:38ABE - LHR

1 stop13h 37mUnited Airlines

Deal found 20/2£1,336

Thu 6/306:30LHR - ABE

2 stops20h 04mMultiple Airlines

Fri 21/317:38ABE - LHR

1 stop13h 37mMultiple Airlines

Deal found 20/2£2,712

Find flights from London to Allentown within your budget

Fly from

Fly to

Route

Depart

Return

Price

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Thu 15/5

20:55-17:16

2 stops25h 21m

Allentown-Bethlehem

Sun 18/5

17:40-12:15

2 stops37h 35m

£593

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Thu 15/5

12:30-20:20

1 stop12h 50m

Allentown-Bethlehem

Sun 18/5

16:00-10:20

1 stop13h 20m

£616

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Thu 15/5

09:20-17:16

1 stop12h 56m

Allentown-Bethlehem

Sun 18/5

17:40-20:00

2 stops21h 20m

£627

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Sun 6/4

09:15-16:55

1 stop12h 40m

Allentown-Bethlehem

Sun 13/4

17:25-09:05

1 stop10h 40m

£779

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Fri 9/5

06:50-16:57

2 stops15h 07m

Allentown-Bethlehem

Mon 9/6

17:35-11:45

1 stop13h 10m

£787

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Tue 29/7

12:55-23:27

2 stops15h 32m

£1,557

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Fri 21/3

11:45-22:29

2 stops38h 44m

£4,319

Flights are sorted by cheapest return flights first.

Deals found on 19/2

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.

Travel insights for flights from London to Allentown

Get recent, data-driven insights about flights from London to Allentown including ideal travel times, pricing trends, and more.

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

8,213 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta

8.0

Very Good

8,213 reviews

Delta

8.0

Very Good

8,213 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

KLM

7.8

Good

1,331 reviews

Delta

8.0

Very Good

8,213 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Finnair

7.6

Good

1,273 reviews

Delta

8.0

Very Good

8,213 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

United Airlines

7.4

Good

8,759 reviews

Delta

8.0

Very Good

8,213 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

American Airlines

7.2

Good

10,000 reviews

Delta

8.0

Very Good

8,213 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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 Finnair. Our recent data shows that you can find tickets from as low as £627 on this airline. Additional options worth looking into are American Airlines and United Airlines, starting at £779 and £787 round-trip. These flights start at 7% 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

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Top airline flying from London to Allentown

Airline	Cheapest	Average	Flexibility	On-time
Finnair	Cheapest£489	Average£577	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 £490

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/3. 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

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 21 February 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 21 February 2025.

Find flights from London to Allentown within your budget

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.

Travel insights for flights from London to Allentown

Get recent, data-driven insights about flights from London to Allentown including ideal travel times, pricing trends, and more.

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

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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 21 February 2025.