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$578+ Cheap flights from Allentown (ABE) to the United Kingdom

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 11/1. Fares are subject to change and may not be available on all flights or dates of travel.
ABE — LHR
nov. 28 — dic. 51
vie. 11/28
vie. 12/5
1 adult, Economy
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Cheap flight deals from Allentown to United Kingdom

Keep the following information in mind while searching for Allentown to United Kingdom flight deals. Data was last updated octubre 29, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
1 star

Round-trip from

$649
(KLM)

One-way from

$578
(United Airlines)
Provider with most accurate pricing for Allentown-Bethlehem-London (LON) flight deals.
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Provider most trusted by Cheapflights users for Allentown-Bethlehem-London (LON) flights.
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From Allentown-Bethlehem to United Kingdom
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One-way flight from Allentown-Bethlehem to United Kingdom
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Find flight deals from Allentown to United Kingdom

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

This KLM deal was found by Cheapflights users on 10/27. 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.
jue. 12/1112:54 pmABE - LHR
1 stop15h 06mKLM
jue. 12/1812:30 pmLHR - ABE
1 stop14h 41mKLM
Deal found 10/27$649
This Delta deal was found by Cheapflights users on 10/27. 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.
jue. 12/116:25 amABE - LHR
2 stops21h 20mDelta
jue. 12/181:00 pmLHR - ABE
2 stops28h 14mDelta
Deal found 10/27$654
This United Airlines deal was found by Cheapflights users on 10/27. 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.
dom. 11/91:00 pmABE - LHR
1 stop11h 55mUnited Airlines
dom. 11/166:50 amLHR - ABE
2 stops19h 26mUnited Airlines
Deal found 10/27$670
This United Airlines deal was found by Cheapflights users on 10/27. 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.
lun. 11/101:00 pmABE - LHR
1 stop11h 55mUnited Airlines
lun. 11/179:00 amLHR - ABE
2 stops31h 48mUnited Airlines
Deal found 10/27$676
This KLM deal was found by Cheapflights users on 10/27. 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.
vie. 12/512:54 pmABE - LHR
1 stop13h 56mKLM
sáb. 3/76:30 amLHR - ABE
2 stops15h 43mKLM
Deal found 10/27$693
This United Airlines deal was found by Cheapflights users on 10/28. 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.
vie. 12/126:30 amABE - LHR
2 stops19h 10mUnited Airlines
vie. 12/194:20 pmLHR - ABE
2 stops29h 10mUnited Airlines
Deal found 10/28$704
This United Airlines deal was found by Cheapflights users on 10/27. 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.
vie. 12/56:30 amABE - LHR
2 stops19h 40mUnited Airlines
sáb. 3/76:35 amLHR - ABE
2 stops20h 12mUnited Airlines
Deal found 10/27$719
This Delta deal was found by Cheapflights users on 10/26. 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.
lun. 11/36:00 pmABE - LHR
1 stop12h 40mDelta
dom. 11/98:55 amLHR - ABE
1 stop13h 24mDelta
Deal found 10/26$786
This United Airlines deal was found by Cheapflights users on 10/29. 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.
jue. 11/61:00 pmABE - LCY
2 stops23h 05mMultiple Airlines
jue. 11/137:10 pmLCY - ABE
2 stops31h 06mMultiple Airlines
Deal found 10/29$804
This American Airlines deal was found by Cheapflights users on 10/27. 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.
mié. 11/51:46 pmABE - EDI
2 stops20h 24mAmerican Airlines
mar. 11/188:40 amEDI - ABE
2 stops19h 12mAmerican Airlines
Deal found 10/27$816
This United Airlines deal was found by Cheapflights users on 10/27. 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.
jue. 12/111:00 pmABE - LHR
2 stops14h 25mUnited Airlines
jue. 12/187:40 amLHR - ABE
1 stop13h 50mUnited Airlines
Deal found 10/27$841
This American Airlines deal was found by Cheapflights users on 10/26. 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.
vie. 11/74:30 pmABE - GLA
2 stops18h 10mAmerican Airlines
mar. 11/117:25 amGLA - ABE
2 stops20h 27mAmerican Airlines
Deal found 10/26$860

Cheapflights Fare Finder

 
Customize your flight search to find flights from Allentown to United Kingdom 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 octubre 29, 2025.
Use the filters below to find and compare flights from Allentown to the United Kingdom that are best for you.

Fly from

Allentown

Fly to

United Kingdom

Route

Depart

Return

Price

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

jue. 12/11

6:25 am-8:45 am

2 stops21h 20m

London Heathrow

jue. 12/18

1:00 pm-12:14 pm

2 stops28h 14m

$654

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

jue. 12/11

1:00 pm-5:55 am

1 stop11h 55m

London Heathrow

lun. 12/15

1:45 pm-9:46 pm

2 stops37h 01m

$670

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

dom. 11/9

1:00 pm-5:55 am

1 stop11h 55m

London Heathrow

dom. 11/16

6:50 am-9:16 pm

2 stops19h 26m

$670

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

lun. 11/10

1:00 pm-5:55 am

1 stop11h 55m

London Heathrow

lun. 11/17

9:00 am-11:48 am

2 stops31h 48m

$676

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

sáb. 1/24

11:30 am-7:10 am

2 stops38h 40m

London Heathrow

dom. 2/1

6:50 am-9:15 pm

2 stops19h 25m

$678

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

vie. 12/5

12:54 pm-7:50 am

1 stop13h 56m

London Heathrow

sáb. 3/7

6:30 am-5:13 pm

2 stops15h 43m

$693

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

jue. 12/11

5:22 pm-11:15 am

1 stop12h 53m

London Heathrow

jue. 12/18

1:35 pm-9:47 pm

1 stop13h 12m

$699

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

vie. 12/12

6:30 am-6:40 am

2 stops19h 10m

London Heathrow

vie. 12/19

4:20 pm-4:30 pm

2 stops29h 10m

$704

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

vie. 12/5

6:30 am-7:10 am

2 stops19h 40m

London Heathrow

sáb. 3/7

6:35 am-9:47 pm

2 stops20h 12m

$719

AllentownManchester

ABE - MAN

ABEMAN

Allentown-Bethlehem

vie. 3/27

5:40 pm-10:30 am

1 stop12h 50m

Manchester

mar. 3/31

11:00 am-5:13 pm

1 stop35h 13m

$827

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 37 results
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Best time to book a flight from Allentown to United Kingdom

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

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

Currently, October is the cheapest month in which you can book a flight from Allentown to United Kingdom (average of $188). Flying from Allentown to United Kingdom in May is currently the most expensive (average of $486). 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 GB?

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

One of the essential ways to save on airfare from Allentown to United Kingdom is to remain as flexible as possible. Flights that are in the evening tend to be the most expensive. A flight in the morning could potentially save you up to 15% on airfare.

Reviews of airlines servicing United Kingdom

Get insights into the airlines that provide service to United Kingdom. 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 United Kingdom. Reviews last updated octubre 29, 2025.
Read reviews from past customers who have flown Delta and United Airlines from Allentown to the United Kingdom. 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
7.9
Good
7,992 reviews

Crew

8.5

Overall

7.9

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Delta
7.9
Good
7,992 reviews
Delta
7.9
Good
7,992 reviews

Crew

8.5

Overall

7.9

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
United Airlines
7.4
Good
8,999 reviews
Delta
7.9
Good
7,992 reviews

Crew

8.5

Overall

7.9

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.

Related info for your journey

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

    Most people fly from Allentown-Bethlehem (ABE) if they book a flight from Allentown to United Kingdom. Allentown-Bethlehem is conveniently located just 3.9 mi from Allentown’s city center.

  • How long is the flight from Allentown to United Kingdom?

    Delta, United Airlines, and Virgin Atlantic can get you from Allentown to United Kingdom in just under 11h 55m. Your travel time can differ by up to 9h 25m. The distance between Allentown and United Kingdom is about 3507 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the most popular routes from Allentown to United Kingdom?

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

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

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

  • How can I find direct flights from Allentown to United Kingdom?

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

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

    Yes. Cheapflights offers flight deals from Allentown to United Kingdom 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 United Kingdom?

    Currently, October is the cheapest month in which you can book a flight from Allentown to United Kingdom (average of $188). Flying from Allentown to United Kingdom in May is currently the most expensive (average of $486). 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Allentown to United Kingdom

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from Allentown to United Kingdom

Discover the top 2 airlines that operate flights from Allentown to United Kingdom. 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 octubre 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$581Average$724FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$690Average$817FlexibilityNo cancel feeOn-time69%

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