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

Virgin Atlantic, at $496, was found to be the cheapest airline from Allentown to London Heathrow Airport.Alternate airlines to your destination round-trip include Delta and KLM. Virgin Atlantic is priced at 38% lower than the current average price of a flight leaving 3 months from now.

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

Travelers seeking maximum savings on their Allentown to London Heathrow Airport flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Monday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 1.6 - 2.8 inches per month. January is typically the wettest month, when rainfall can reach 2.8 in. July is typically the driest time to visit London Heathrow Airport when rainfall is around 1.6 in.

If weather is an important factor for your trip to London Heathrow Airport, 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 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).

What are the most popular airlines that fly from Allentown to London Heathrow Airport?

Before booking your flight from Allentown to London Heathrow Airport check out the most popular airlines for this route: American Airlines, Delta or United Airlines.

What is the cheapest day to fly round-trip from Allentown to London Heathrow Airport?

It’s generally more expensive to depart on a Tuesday, if you have to leave on this day you can still search on Cheapflights to find great options that meet your needs.

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

The best pricing can be found in the month of February. Prices to London Heathrow Airport from Allentown average $992. You can even find prices in February for less than $992, as users have found deals to London Heathrow Airport from as low as $419. The month of January appears to be one of the more expensive times to travel to London Heathrow Airport from Allentown. Flying in the targeted month can save you up to 168%.

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

Allentown-Bethlehem (ABE) is the airport you will fly out of if you book a flight from Allentown to London Heathrow. You should not have trouble finding flights to London Heathrow from Allentown-Bethlehem; the airport handles an average of 0 outbound flights to London Heathrow per day. You should also have plenty of airline options to choose from since 3 airlines have flights from the Allentown airport to London Heathrow. It is only a 3.9 mi journey to Allentown-Bethlehem (ABE) from Allentown’s city center.

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

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

How can I find direct flights from Allentown to Heathrow?

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

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

Yes. Cheapflights offers flight deals from Allentown to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$496+ Flights from Allentown to London Heathrow Airport

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Cheap flight deals from Allentown to Heathrow

Round-trip from	$496 (Netflights)
Popular in	June
Cheapest in	November
Average price	$902

From Allentown-Bethlehem to London Heathrow

Search Deals

Highest demand for flights based on searches. 16% potential increase in price ($156 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease ($35 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in July 2025

Search Deals

Find flight deals from Allentown to Heathrow

Cheapest flights from Allentown to Heathrow
Explore the most affordable flight options available from Allentown to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julho 29, 2025.

qua 9/102:30 pmABE - LHR

1 stop11h 45mVirgin Atlantic

qua 9/179:20 amLHR - ABE

1 stop18h 21mVirgin Atlantic

Deal found 7/27

$496

qua 9/106:14 pmABE - LHR

1 stop14h 16mMultiple Airlines

qua 9/176:15 amLHR - ABE

2 stops16h 16mMultiple Airlines

Deal found 7/27

$512

seg 8/1812:56 pmABE - LHR

1 stop13h 19mDelta

qui 8/286:15 amLHR - ABE

2 stops21h 24mDelta

Deal found 7/28

$524

seg 8/186:14 pmABE - LHR

1 stop14h 16mKLM

qui 8/286:30 amLHR - ABE

2 stops16h 04mKLM

Deal found 7/28

$525

qua 9/101:00 pmABE - LHR

1 stop12h 20mUnited Airlines

qui 9/255:40 pmLHR - ABE

2 stops33h 14mUnited Airlines

Deal found 7/29

$634

sex 11/71:46 pmABE - LHR

1 stop12h 34mAmerican Airlines

sáb 11/152:45 pmLHR - ABE

1 stop13h 08mAmerican Airlines

Deal found 7/29

$1,039

Best flights from Allentown to Heathrow
Discover carefully curated flight deals from Allentown to Heathrow that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated julho 29, 2025.

qua 9/102:30 pmABE - LHR

1 stop11h 45mVirgin Atlantic

qua 9/179:20 amLHR - ABE

1 stop18h 21mVirgin Atlantic

Deal found 7/27

$496

qua 9/106:14 pmABE - LHR

1 stop14h 16mMultiple Airlines

qua 9/176:15 amLHR - ABE

2 stops16h 16mMultiple Airlines

Deal found 7/27

$512

seg 8/1812:56 pmABE - LHR

1 stop13h 19mDelta

qui 8/286:15 amLHR - ABE

2 stops21h 24mDelta

Deal found 7/28

$524

seg 8/186:14 pmABE - LHR

1 stop14h 16mKLM

qui 8/286:30 amLHR - ABE

2 stops16h 04mKLM

Deal found 7/28

$525

qua 9/101:00 pmABE - LHR

1 stop12h 20mUnited Airlines

qui 9/255:40 pmLHR - ABE

2 stops33h 14mUnited Airlines

Deal found 7/29

$634

sex 11/71:46 pmABE - LHR

1 stop12h 34mAmerican Airlines

sáb 11/152:45 pmLHR - ABE

1 stop13h 08mAmerican Airlines

Deal found 7/29

$1,039

Last-minute flights from Allentown to Heathrow
Discover last-minute flight deals from Allentown to Heathrow. Data last updated julho 29, 2025 and is based on user searches.

ter 7/298:03 pmABE - LHR

1 stop11h 27mAmerican Airlines

qui 7/3110:00 amLHR - ABE

2 stops14h 33mAmerican Airlines

Deal found 7/28

$2,685

sex 8/86:14 pmABE - LHR

1 stop11h 56mDelta

sáb 8/169:20 amLHR - ABE

1 stop13h 14mDelta

Deal found 7/28

$4,032

qui 8/1412:56 pmABE - LHR

2 stops42h 09mWestJet

dom 8/172:10 pmLHR - ABE

2 stops37h 47mWestJet

Deal found 7/27

$12,714

seg 8/1812:56 pmABE - LHR

1 stop13h 19mDelta

qui 8/286:15 amLHR - ABE

2 stops21h 24mDelta

Deal found 7/28

$524

seg 8/186:14 pmABE - LHR

1 stop14h 16mKLM

qui 8/286:30 amLHR - ABE

2 stops16h 04mKLM

Deal found 7/28

$525

seg 8/181:05 pmABE - LHR

3 stops39h 55mMultiple Airlines

qui 8/2810:05 pmLHR - ABE

3 stops29h 57mMultiple Airlines

Deal found 7/28

$1,224

ter 8/191:00 pmABE - LHR

1 stop12h 20mUnited Airlines

dom 8/246:50 amLHR - ABE

2 stops20h 04mUnited Airlines

Deal found 7/29

$690

One-way flights from Allentown to Heathrow
Search for one-way flight options from Allentown to Heathrow. Find affordable one-way fares based on user searches. Data last updated julho 29, 2025.

seg 8/116:14 pmABE - LHR

1 stop11h 56mDelta

Deal found 7/29

$543

qua 11/51:00 pmABE - LHR

2 stops16h 25mUnited Airlines

Deal found 7/27

$1,136

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

qua 9/10

2:30 pm-7:15 am

1 stop11h 45m

London Heathrow

qua 9/17

9:20 am-10:41 pm

1 stop18h 21m

$496

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

qua 9/10

6:14 pm-1:30 pm

1 stop14h 16m

London Heathrow

qua 9/17

6:15 am-5:31 pm

2 stops16h 16m

$512

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

seg 8/18

12:56 pm-7:15 am

1 stop13h 19m

London Heathrow

qui 8/28

6:15 am-10:39 pm

2 stops21h 24m

$524

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

seg 8/18

6:14 pm-1:30 pm

1 stop14h 16m

London Heathrow

qui 8/28

6:30 am-5:34 pm

2 stops16h 04m

$525

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

qua 9/10

1:00 pm-6:20 am

1 stop12h 20m

London Heathrow

qui 9/25

5:40 pm-9:54 pm

2 stops33h 14m

$634

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

sex 11/7

1:46 pm-7:20 am

1 stop12h 34m

London Heathrow

sáb 11/15

2:45 pm-10:53 pm

1 stop13h 08m

$1,039

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

seg 8/11

6:14 pm-11:10 am

1 stop11h 56m

$543

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

qua 11/5

1:00 pm-10:25 am

2 stops16h 25m

$1,136

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Best time to book a flight from Allentown to Heathrow

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

Estimated round-trip 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 Allentown to London Heathrow Airport

What is the cheapest month to book a flight from Allentown to London Heathrow Airport?

Currently, November is the cheapest month in which you can book a flight from Allentown to London Heathrow Airport (average of $661). Flying from Allentown to London Heathrow Airport in June is currently the most expensive (average of $1,097). 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 is the cheapest time of day to fly from ABE to LHR?

When flying from Allentown to London Heathrow Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 26% versus a flight in the morning.

Reviews of airlines servicing Heathrow

Read reviews from past customers who have flown Delta, KLM, and United Airlines from Allentown to London Heathrow Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,977 reviews

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

7,977 reviews

Delta

8.0

Very good

7,977 reviews

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!

KLM

7.8

Good

1,383 reviews

Delta

8.0

Very good

7,977 reviews

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

8,899 reviews

Delta

8.0

Very good

7,977 reviews

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

655 reviews

Delta

8.0

Very good

7,977 reviews

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

7,977 reviews

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 from for flights from Allentown to London Heathrow?
Allentown-Bethlehem (ABE) is the airport you will fly out of if you book a flight from Allentown to London Heathrow. You should not have trouble finding flights to London Heathrow from Allentown-Bethlehem; the airport handles an average of 0 outbound flights to London Heathrow per day. You should also have plenty of airline options to choose from since 3 airlines have flights from the Allentown airport to London Heathrow. It is only a 3.9 mi journey to Allentown-Bethlehem (ABE) from Allentown’s city center.
What are the cheapest airlines flying from Allentown to London Heathrow Airport round-trip?
Virgin Atlantic, at $496, was found to be the cheapest airline from Allentown to London Heathrow Airport.Alternate airlines to your destination round-trip include Delta and KLM. Virgin Atlantic is priced at 38% lower than the current average price of a flight leaving 3 months from now.
Can I find deals for flights from Allentown to Heathrow that include hotel bookings?
Yes. In addition to deals on Allentown to Heathrow flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Allentown to Heathrow?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Allentown to Heathrow.
Can I find deals for business class flights from Allentown to Heathrow?
Yes. Cheapflights offers flight deals from Allentown to Heathrow 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 Allentown to London Heathrow Airport?
Currently, November is the cheapest month in which you can book a flight from Allentown to London Heathrow Airport (average of $661). Flying from Allentown to London Heathrow Airport in June is currently the most expensive (average of $1,097). 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

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Top 3 airlines flying from Allentown to Heathrow

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$575	Average$753	FlexibilityNo cancel fee	On-time69%
American Airlines	Cheapest$588	Average$780	FlexibilityNo cancel fee	On-time71%
Delta	Cheapest$597	Average$777	FlexibilityNo cancel fee	On-timeN/A

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$496+ Cheap flights from Allentown (ABE) to Heathrow (LHR)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/10. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Allentown to Heathrow with Cheapflights

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Cheap flight deals from Allentown to Heathrow

Round-trip from

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Find flight deals from Allentown to Heathrow

Cheapest flights from Allentown to HeathrowExplore the most affordable flight options available from Allentown to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julho 29, 2025.

Explore the most affordable flight options available from Allentown to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julho 29, 2025.

Cheapflights Fare Finder

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

Best time to book a flight from Allentown to Heathrow

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

Cheapflights Insights

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

What is the cheapest month to book a flight from Allentown to London Heathrow Airport?

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

Find hourly flight availability from Allentown to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated julho 29, 2025.

Reviews of airlines servicing Heathrow

Read reviews from past customers who have flown Delta, KLM, and United Airlines from Allentown to London Heathrow Airport. Users can see the overall rating for each airline as well as how each is rated 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 Allentown to Heathrow. 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 from for flights from Allentown to London Heathrow?

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

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

How can I find direct flights from Allentown to Heathrow?

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

What is the cheapest month to book a flight from Allentown to London Heathrow Airport?

Traveling to a place near London Heathrow Airport?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Allentown to Heathrow

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Top 3 airlines flying from Allentown to Heathrow

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Cheapest flights from Allentown to Heathrow
Explore the most affordable flight options available from Allentown to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julho 29, 2025.