HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
London

$459+ Cheap flights from Allentown (ABE) to London (LON)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/22. Fares are subject to change and may not be available on all flights or dates of travel.
ABE — LON
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Allentown to London with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 September 11, 2025.

Round-trip from

$579
(Trip.com)

One-way from

$459
(Delta)
From Allentown-Bethlehem to London (LON)
Search Deals
One-way flight from Allentown-Bethlehem to London (LON)
Search Deals

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 September 11, 2025.

This Trip.com deal was found by Cheapflights users on 9/11. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/2612:46 pmABE - LHR
1 stop13h 39mVirgin Atlantic
Sun 11/28:55 amLHR - ABE
1 stop18h 20mVirgin Atlantic
Deal found 9/11$579
This Trip.com deal was found by Cheapflights users on 9/11. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/212:46 pmABE - LHR
1 stop15h 14mVirgin Atlantic
Tue 11/188:55 amLHR - ABE
1 stop13h 24mVirgin Atlantic
Deal found 9/11$622
This Netflights deal was found by Cheapflights users on 9/11. 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 Netflights is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/266:00 amABE - LHR
2 stops30h 05mMultiple Airlines
Sun 11/212:30 pmLHR - ABE
1 stop14h 45mMultiple Airlines
Deal found 9/11$643
This Delta deal was found by Cheapflights users on 9/11. 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.
Sun 11/26:00 pmABE - LHR
1 stop34h 00mDelta
Tue 11/189:00 amLHR - ABE
2 stops18h 12mDelta
Deal found 9/11$649
This United Airlines deal was found by Cheapflights users on 9/11. 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.
Thu 10/21:00 pmABE - LHR
1 stop12h 20mUnited Airlines
Wed 10/228:40 amLHR - ABE
2 stops30h 58mUnited Airlines
Deal found 9/11$660
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Thu 10/301:00 pmABE - LHR
1 stop12h 55mUnited Airlines
Mon 11/31:30 pmLHR - ABE
2 stops32h 17mUnited Airlines
Deal found 9/10$685
This United Airlines deal was found by Cheapflights users on 9/11. 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.
Sun 10/265:22 pmABE - LHR
1 stop13h 53mUnited Airlines
Sun 11/25:50 amLHR - ABE
2 stops14h 57mUnited Airlines
Deal found 9/11$691
This United Airlines deal was found by Cheapflights users on 9/9. 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.
Sat 10/251:00 pmABE - LHR
1 stop12h 55mUnited Airlines
Sat 11/16:50 amLHR - ABE
2 stops18h 51mUnited Airlines
Deal found 9/9$692
This United Airlines deal was found by Cheapflights users on 9/11. 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.
Wed 10/86:30 amABE - LHR
2 stops18h 25mUnited Airlines
Tue 10/218:45 amLHR - ABE
2 stops30h 53mUnited Airlines
Deal found 9/11$699
This Delta deal was found by Cheapflights users on 9/11. 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.
Sun 11/25:00 amABE - LCY
2 stops20h 15mDelta
Tue 11/187:45 amLCY - ABE
2 stops19h 27mDelta
Deal found 9/11$731
This United Airlines deal was found by Cheapflights users on 9/11. 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.
Sun 10/266:32 amABE - LCY
2 stops26h 18mMultiple Airlines
Sun 11/25:45 pmLCY - ABE
2 stops32h 56mMultiple Airlines
Deal found 9/11$838
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2511:00 amABE - LGW
1 stop18h 00mMultiple Airlines
Thu 1/111:55 amLGW - ABE
2 stops39h 34mMultiple Airlines
Deal found 9/9$1,237

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 September 11, 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

Sun 10/26

12:46 pm-6:25 am

1 stop13h 39m

London Heathrow

Sun 11/2

8:55 am-10:15 pm

1 stop18h 20m

$579

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Sun 10/26

6:00 am-4:05 pm

2 stops30h 05m

London Heathrow

Sun 11/2

12:30 pm-10:15 pm

1 stop14h 45m

$643

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Sun 11/2

6:00 pm-9:00 am

1 stop34h 00m

London Heathrow

Tue 11/18

9:00 am-10:12 pm

2 stops18h 12m

$649

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Thu 10/2

1:00 pm-6:20 am

1 stop12h 20m

London Heathrow

Wed 10/22

8:40 am-10:38 am

2 stops30h 58m

$660

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Thu 10/30

1:00 pm-5:55 am

1 stop12h 55m

London Heathrow

Mon 11/3

1:30 pm-4:47 pm

2 stops32h 17m

$685

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Sun 10/26

5:22 pm-11:15 am

1 stop13h 53m

London Heathrow

Sun 11/2

5:50 am-4:47 pm

2 stops14h 57m

$691

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Sat 10/25

1:00 pm-6:55 am

1 stop12h 55m

London Heathrow

Sat 11/1

6:50 am-9:41 pm

2 stops18h 51m

$692

AllentownLondon

ABE - LCY

ABELCY

Allentown-Bethlehem

Sun 11/2

5:00 am-6:15 am

2 stops20h 15m

London City

Tue 11/18

7:45 am-10:12 pm

2 stops19h 27m

$731

AllentownLondon

ABE - LCY

ABELCY

Allentown-Bethlehem

Sun 10/26

6:32 am-12:50 pm

2 stops26h 18m

London City

Sun 11/2

5:45 pm-9:41 pm

2 stops32h 56m

$838

AllentownLondon

ABE - LGW

ABELGW

Allentown-Bethlehem

Thu 12/25

11:00 am-10:00 am

1 stop18h 00m

London Gatwick

Thu 1/1

11:55 am-10:29 pm

2 stops39h 34m

$1,237

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 16 results
1
2

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 $1,098). 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 September 11, 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.

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.

  • How long is the flight from Allentown to London?

    Airlines like Virgin Atlantic, Delta, and United Airlines fly from Allentown to London in about 12h 20m. The time it takes to get you to your destination can typically vary by up to 21h 40m. The distance from Allentown to London is about 3507 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    According to our current data, Delta ($581), American Airlines ($588), and United Airlines ($690) offers the cheapest pricing from Allentown to London.

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

    The most popular flight routes from Allentown to London are Allentown-Bethlehem - London Heathrow, Allentown-Bethlehem - London City and Allentown-Bethlehem - London Gatwick.

  • 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 $1,098). 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 London?

Book flights to London if you plan to visit one of these locations
Hounslow
Hayes
Thornton Heath
Southend-on-Sea
Harrow
Canterbury
Croydon
Eastleigh
Dartford
Dover
Winchester
Orpington
Gatwick
Borehamwood
Aylesbury
Bedford
Wembley
Folkestone
Chichester
Arundel

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 Allentown to London

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Heathrow flights
Newark to Heathrow flights
LaGuardia to Heathrow flights
Dulles Intl to Heathrow flights
John F Kennedy Intl to London City flights
Newark to Gatwick flights
John F Kennedy Intl to Gatwick flights
LaGuardia to Gatwick flights
Newark to London City flights
John F Kennedy Intl to Stansted flights
John F Kennedy Intl to Luton flights
Reagan-National to Heathrow flights
Philadelphia to Heathrow flights
Dulles Intl to Gatwick flights
Newark to Stansted flights
Newark to Luton flights
Dulles Intl to London City flights
Reagan-National to Gatwick flights
Newark to Edinburgh flights
John F Kennedy Intl to Edinburgh flights
LaGuardia to London City flights
Dulles Intl to Stansted flights
Dulles Intl to Luton flights
Dulles Intl to Edinburgh flights
John F Kennedy Intl to Manchester flights
Philadelphia to Gatwick flights
LaGuardia to Edinburgh flights
Pittsburgh to Heathrow flights
Reagan-National to London City flights
Philadelphia to London City flights
Philadelphia to Stansted flights
Philadelphia to Luton flights
Pittsburgh to Gatwick flights
LaGuardia to Stansted flights
Newark to Manchester flights
Reagan-National to Edinburgh flights
Dulles Intl to Manchester flights
Pittsburgh to London City flights
LaGuardia to Manchester flights
Philadelphia to Edinburgh flights
John F Kennedy Intl to Southampton flights
LaGuardia to Luton flights
Reagan-National to Manchester flights
Reagan-National to Stansted flights
Pittsburgh to Edinburgh flights
John F Kennedy Intl to Birmingham flights
Philadelphia to Manchester flights
John F Kennedy Intl to Southend flights
John F Kennedy Intl to Leeds flights
Pittsburgh to Stansted flights

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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$581Average$724FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$588Average$758FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$690Average$817FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.