London

$602+ Cheap flights from Allentown (ABE) to London (LON)

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 9/3. Fares are subject to change and may not be available on all flights or dates of travel.
ABE — LON
Apr 30 — May 71
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1. Tell us where you want to go

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Cheap flight deals from Allentown to London

Discover tips and strategies to find the most affordable flight options for your journey from Allentown (ABE) to London (LON). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 25, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$602
(Delta)

Popular in

January

Cheapest in

February

Average price

$1,793
Provider with most accurate pricing for Allentown-Bethlehem-London (LON) flight deals.
Provider most trusted by Cheapflights users for Allentown-Bethlehem-London (LON) flights.
From Allentown-Bethlehem to London (LON)
Highest demand for flights based on searches. 25% potential increase in price ($400 potential increase over avg. RT price).
Cheapest flight prices on average. 14% potential price decrease ($151 potential savings vs. average RT price).
Average for round-trip flights in April 2025

Find flight deals from Allentown to London

Cheapest flights from Allentown to London
Explore the most affordable flight options available from Allentown to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 25, 2025.

This Delta deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/31:00 pmABE - LHR
1 stop19h 30mDelta
Thu 9/116:30 amLHR - ABE
2 stops15h 44mDelta
Deal found 4/25$602
This KLM deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/101:00 pmABE - LHR
1 stop12h 45mKLM
Mon 9/151:05 pmLHR - ABE
1 stop15h 18mKLM
Deal found 4/24$659
This Mytrip deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/1512:54 pmABE - LGW
3 stops44h 46mMultiple Airlines
Sat 9/202:00 pmLGW - ABE
2 stops25h 26mMultiple Airlines
Deal found 4/24$934
This United Airlines deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/255:32 pmABE - LHR
1 stop13h 13mUnited Airlines
Fri 5/26:50 amLHR - ABE
2 stops15h 07mUnited Airlines
Deal found 4/24$978
This American Airlines deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/215:27 pmABE - LHR
1 stop10h 38mAmerican Airlines
Sat 5/313:00 pmLHR - ABE
1 stop14h 40mAmerican Airlines
Deal found 4/25$1,340
This Mytrip deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2812:36 pmABE - LHR
3 stops40h 24mMultiple Airlines
Fri 5/910:05 pmLHR - ABE
2 stops26h 44mMultiple Airlines
Deal found 4/24$1,584
This Delta deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/155:40 pmABE - LCY
2 stops18h 00mDelta
Sat 9/2010:00 amLCY - ABE
2 stops18h 23mDelta
Deal found 4/24$1,605
This Mytrip deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2812:36 pmABE - LCY
3 stops42h 54mMultiple Airlines
Mon 5/59:55 amLCY - ABE
2 stops27h 30mMultiple Airlines
Deal found 4/25$2,985

Cheapflights Fare Finder

Customize your flight search to find flights from Allentown to London that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 25, 2025.
Use the filters below to find and compare flights from Allentown to London that are best for you.

Fly from

Allentown

Fly to

London

Route

Depart

Return

Price

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Wed 9/3

1:00 pm-1:30 pm

1 stop19h 30m

London Heathrow

Thu 9/11

6:30 am-5:14 pm

2 stops15h 44m

$602

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Wed 9/10

1:00 pm-6:45 am

1 stop12h 45m

London Heathrow

Mon 9/15

1:05 pm-11:23 pm

1 stop15h 18m

$659

AllentownLondon

ABE - LGW

ABELGW

Allentown-Bethlehem

Mon 9/15

12:54 pm-2:40 pm

3 stops44h 46m

London Gatwick

Sat 9/20

2:00 pm-10:26 am

2 stops25h 26m

$934

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Wed 5/7

5:32 pm-11:45 am

1 stop13h 13m

London Heathrow

Wed 5/14

6:50 am-4:57 pm

2 stops15h 07m

$1,013

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Wed 5/21

5:27 pm-9:05 am

1 stop10h 38m

London Heathrow

Sat 5/31

3:00 pm-12:40 am

1 stop14h 40m

$1,340

AllentownLondon

ABE - LCY

ABELCY

Allentown-Bethlehem

Mon 9/15

5:40 pm-4:40 pm

2 stops18h 00m

London City

Sat 9/20

10:00 am-11:23 pm

2 stops18h 23m

$1,605

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Wed 5/7

6:37 am-6:30 am

2 stops18h 53m

London Heathrow

Wed 5/14

9:30 am-9:45 pm

2 stops17h 15m

$2,039

AllentownLondon

ABE - LCY

ABELCY

Allentown-Bethlehem

Sun 6/8

6:30 am-8:10 am

2 stops20h 40m

London City

Sun 6/15

5:50 pm-4:59 pm

2 stops28h 09m

$8,402

AllentownLondon

ABE - LCY

ABELCY

Allentown-Bethlehem

Mon 7/21

1:00 pm-9:30 am

2 stops15h 30m

$623

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Thu 6/19

12:58 pm-8:55 am

2 stops14h 57m

$699

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/24

Showing 1-10 of 12 results
1
2

Compare providers for flights from Allentown to London

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Allentown to London in April.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*2 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Allentown-London flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Allentown-London flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from Allentown-London flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Allentown-London flights, Cheapflights users trust AranGrant the most. AranGrant has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Allentown-London flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Allentown to London

Have a flexible travel schedule? Discover the best time to fly to London 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

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

Currently, November is the cheapest month in which you can book a flight from Allentown to London (average of $661). Flying from Allentown to London in June is currently the most expensive (average of $1,110). 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 LON?

Find hourly flight availability from Allentown to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 25, 2025.

When flying from Allentown to London, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 30% versus a flight in the afternoon.

Rainfall in London by month

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

In terms of precipitation, rainfall in London 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 when rainfall is around 1.6 in.

Temperature in London by month

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

If weather is an important factor for your trip to London, 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).

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to London. Reviews last updated April 25, 2025.
8.0
Very good

Comfort

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
8.0
Very good
8.0
Very good

Comfort

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
8.0
Very good

Comfort

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
8.0
Very good

Comfort

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
8.0
Very good

Comfort

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from Allentown to London. 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?

    Most people fly from Allentown-Bethlehem (ABE) if they book a flight from Allentown to London. On average, Allentown-Bethlehem has 0 outbound flights to London per day from 3 airlines. Allentown-Bethlehem is conveniently located just 3.9 mi from Allentown’s city center.

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

    According to our current data, Delta ($602), KLM ($659), and United Airlines ($1,013) offers the cheapest pricing from Allentown to London. Delta is 47% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the most popular routes from Allentown to London?

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

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

  • How can I find direct flights from Allentown to London?

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

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

    Yes. Cheapflights offers flight deals from Allentown to London 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?

    Currently, November is the cheapest month in which you can book a flight from Allentown to London (average of $661). Flying from Allentown to London in June is currently the most expensive (average of $1,110). 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

Traveling to a place near Allentown?

Book flights to Allentown if you plan to visit one of these locations
Hayes
Hounslow
Thornton Heath
Luton
Horley
Canterbury
Harrow
Wembley
Dover
Gatwick
Orpington
Watford
Croydon
Borehamwood
Folkestone
Ilford
Aylesbury
Chelmsford
Sutton
Brentwood

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Allentown to London

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

Top 3 airlines flying from Allentown to London

Discover the top 3 airlines that operate flights from Allentown to London. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$575Average$808FlexibilityNo cancel feeOn-time69%
DeltaCheapest$597Average$777FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$639Average$782FlexibilityNo cancel feeOn-time71%

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