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

According to our current data, Delta (£565), American Airlines (£972), and United Airlines (£1,052) offers the cheapest pricing from London Heathrow Airport to Allentown.

What are the cheapest airlines to fly from London Heathrow Airport to Allentown one-way?

For one-way options, check prices for American Airlines. According to our data, you can fly for as low as £1,245. Users have also found prices from £1,293 and £2,307 on Delta and United Airlines, respectively.

What is the cheapest month to fly from London Heathrow Airport to Allentown?

The best pricing can be found in the month of April. Prices to Allentown from London Heathrow Airport average £673. You can even find prices in April for less than £673, as users have found deals to Allentown from as low as £493. The month of August appears to be one of the more expensive times to travel to Allentown from London Heathrow Airport. Flying in the targeted month can save you up to 81%.

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

It’s optimal to fly from London Heathrow Airport to Allentown at midday. By choosing this option you can save up to 15% on the cost of your flight, compared to a flight in the morning.

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

Most people fly into Allentown-Bethlehem (ABE) if they book a flight to Allentown from London Heathrow. On average, Allentown-Bethlehem has 0 inbound flights from London Heathrow per day from 1 airline. Allentown-Bethlehem is conveniently located just 3.9 mi from Allentown’s city center.

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

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

How can I find direct flights from Heathrow to Allentown?

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

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

Yes. Cheapflights offers flight deals from Heathrow 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.

£565+ Flights from London Heathrow Airport to Allentown

Cheap flight deals from Heathrow to Allentown

Round-trip from	£565
Popular in	August
Cheapest in	April
Average price	£521

Delta
3/5-21/5
4 total stops
37h 01m total
London to Allentown

Search Deals

Highest demand for flights based on searches. 18% potential increase in price (£113 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 8% potential price decrease (£43 potential savings vs. average return price).

Search Deals

Average for round-trip flights in April 2025

Search Deals

Find flight deals from Heathrow to Allentown

Cheapest flights from Heathrow to Allentown
Explore the most affordable flight options available from Heathrow to Allentown. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 April 2025.

Sat 3/508:40LHR - ABE

2 stops18h 38mDelta

Wed 21/513:12ABE - LHR

2 stops18h 23mDelta

Deal found 14/4£565

Sat 3/509:15LHR - ABE

1 stop12h 40mAmerican Airlines

Wed 21/517:27ABE - LHR

1 stop10h 38mAmerican Airlines

Deal found 14/4£972

Thu 5/608:30LHR - ABE

1 stop13h 29mUnited Airlines

Sun 8/617:35ABE - LHR

1 stop13h 10mUnited Airlines

Deal found 14/4£1,052

Fri 19/906:30LHR - ABE

2 stops20h 24mMultiple Airlines

Tue 30/917:28ABE - LHR

1 stop13h 17mMultiple Airlines

Deal found 13/4£1,660

Best flights from Heathrow to Allentown
Discover carefully curated flight deals from Heathrow to Allentown that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 15 April 2025.

Sat 3/508:40LHR - ABE

2 stops18h 38mDelta

Wed 21/513:12ABE - LHR

2 stops18h 23mDelta

Deal found 14/4£565

Sat 3/509:15LHR - ABE

1 stop12h 40mAmerican Airlines

Wed 21/517:27ABE - LHR

1 stop10h 38mAmerican Airlines

Deal found 14/4£972

Thu 5/608:30LHR - ABE

1 stop13h 29mUnited Airlines

Sun 8/617:35ABE - LHR

1 stop13h 10mUnited Airlines

Deal found 14/4£1,052

Fri 19/906:30LHR - ABE

2 stops20h 24mMultiple Airlines

Tue 30/917:28ABE - LHR

1 stop13h 17mMultiple Airlines

Deal found 13/4£1,660

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

Sat 3/508:40LHR - ABE

2 stops18h 38mDelta

Wed 21/513:12ABE - LHR

2 stops18h 23mDelta

Deal found 14/4£565

Sat 3/509:15LHR - ABE

1 stop12h 40mAmerican Airlines

Wed 21/517:27ABE - LHR

1 stop10h 38mAmerican Airlines

Deal found 14/4£972

Thu 29/508:30LHR - ABE

1 stop13h 29mUnited Airlines

Thu 5/617:35ABE - LHR

1 stop13h 10mUnited Airlines

Deal found 13/4£1,243

One-way flights from Heathrow to Allentown
Search for one-way flight options from Heathrow to Allentown. Find affordable one-way fares based on user searches. Data last updated 15 April 2025.

Mon 30/618:05LHR - ABE

2 stops30h 27mAmerican Airlines

Deal found 13/4£1,245

Wed 11/611:20LHR - ABE

1 stop16h 09mDelta

Deal found 14/4£1,293

Fri 30/508:00LHR - ABE

2 stops18h 55mUnited Airlines

Deal found 14/4£2,307

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Sat 3/5

08:40-22:18

2 stops18h 38m

Allentown-Bethlehem

Wed 21/5

13:12-12:35

2 stops18h 23m

£565

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Sat 3/5

09:15-16:55

1 stop12h 40m

Allentown-Bethlehem

Wed 21/5

17:27-09:05

1 stop10h 38m

£972

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Thu 5/6

08:30-16:59

1 stop13h 29m

Allentown-Bethlehem

Sun 8/6

17:35-11:45

1 stop13h 10m

£1,052

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Fri 19/9

06:30-21:54

2 stops20h 24m

Allentown-Bethlehem

Tue 30/9

17:28-11:45

1 stop13h 17m

£1,660

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Mon 30/6

18:05-19:32

2 stops30h 27m

£1,245

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Wed 11/6

11:20-22:29

1 stop16h 09m

£1,293

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Fri 30/5

08:00-21:55

2 stops18h 55m

£2,307

Flights are sorted by cheapest return flights first.

Deals found on 13/4

Best time to book a flight from Heathrow to Allentown

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

7,916 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

7,916 reviews

Delta

8.0

Very Good

7,916 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

8,656 reviews

Delta

8.0

Very Good

7,916 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

7,916 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 Heathrow?
Most people fly into Allentown-Bethlehem (ABE) if they book a flight to Allentown from London Heathrow. On average, Allentown-Bethlehem has 0 inbound flights from London Heathrow per day from 1 airline. Allentown-Bethlehem is conveniently located just 3.9 mi from Allentown’s city center.
What are the cheapest airlines flying from London Heathrow Airport to Allentown round-trip?
According to our current data, Delta (£565), American Airlines (£972), and United Airlines (£1,052) offers the cheapest pricing from London Heathrow Airport to Allentown.
What are the cheapest airlines to fly from London Heathrow Airport to Allentown one-way?
For one-way options, check prices for American Airlines. According to our data, you can fly for as low as £1,245. Users have also found prices from £1,293 and £2,307 on Delta and United Airlines, respectively.
Can I find deals for flights from Heathrow to Allentown that include hotel bookings?
Yes. In addition to deals on Heathrow to Allentown flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Heathrow to Allentown?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Allentown.
Can I find deals for business class flights from Heathrow to Allentown?
Yes. Cheapflights offers flight deals from Heathrow 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

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Alternative routes for Heathrow to Allentown

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London City to Philadelphia flights

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Gatwick to Erie flights

Top airline flying from Heathrow to Allentown

Airline	Cheapest	Average	Flexibility	On-time
Finnair	Cheapest£469	Average£577	FlexibilityNo cancel fee	On-time76%	Search Finnair flights

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

Deals for Heathrow to Allentown flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

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

Millions of users choose and trust Cheapflights to book the best flight deals from Heathrow to Allentown for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

Need flexible booking options for your flight to Allentown from Heathrow? 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 Heathrow to Allentown become cheaper?

Yes! Start tracking prices for Heathrow to Allentown flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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Cheap flights from London Heathrow Airport to Allentown from £565

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/5. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Heathrow to Allentown

Round-trip from

Popular in

Cheapest in

Average price

Find flight deals from Heathrow to Allentown

Cheapest flights from Heathrow to AllentownExplore the most affordable flight options available from Heathrow to Allentown. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 April 2025.

Explore the most affordable flight options available from Heathrow to Allentown. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 April 2025.

Cheapflights Fare Finder

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

Best time to book a flight from Heathrow to Allentown

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

Cheapflights Insights

Everything you need to know about your flight from London Heathrow Airport 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 Heathrow 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 Heathrow?

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

What are the cheapest airlines to fly from London Heathrow Airport to Allentown one-way?

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

How can I find direct flights from Heathrow to Allentown?

Can I find deals for business class flights from Heathrow 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 Heathrow to Allentown

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

Top airline flying from Heathrow 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 Heathrow to Allentown?

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

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

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

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Cheapest flights from Heathrow to Allentown
Explore the most affordable flight options available from Heathrow to Allentown. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 April 2025.