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$399+ 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 7/21. Fares are subject to change and may not be available on all flights or dates of travel.
ABE — LHR
May 4 — May 111
Sun 5/4
Sun 5/11
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 April 29, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$601
(Delta)

One-way from

$399
(Delta)

Popular in

January

Cheapest in

February

Average price

$1,793
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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Highest demand for flights based on searches. 25% potential increase in price ($400 potential increase over avg. RT price).
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Cheapest flight prices on average. 14% potential price decrease ($151 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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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 April 29, 2025.

This Delta deal was found by Cheapflights users on 4/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/81:00 pmABE - LHR
1 stop19h 30mDelta
Wed 10/156:15 amLHR - ABE
2 stops22h 08mDelta
Deal found 4/29$601
This KLM deal was found by Cheapflights users on 4/28. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/101:00 pmABE - LHR
1 stop19h 30mKLM
Sun 9/289:20 amLHR - ABE
1 stop19h 03mKLM
Deal found 4/28$659
This Kiwi.com deal was found by Cheapflights users on 4/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/96:00 amABE - LGW
1 stop23h 00mMultiple Airlines
Wed 5/142:00 pmLGW - ABE
1 stop34h 56mMultiple Airlines
Deal found 4/28$835
This United Airlines deal was found by Cheapflights users on 4/28. 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.
Mon 5/125:32 pmABE - LHR
1 stop13h 13mUnited Airlines
Sun 5/258:30 amLHR - ABE
1 stop13h 29mUnited Airlines
Deal found 4/28$849
This Delta deal was found by Cheapflights users on 4/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/285:21 pmABE - MAN
2 stops18h 24mDelta
Tue 5/612:35 pmMAN - ABE
1 stop14h 43mDelta
Deal found 4/28$887
This Delta deal was found by Cheapflights users on 4/27. 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.
Fri 5/95:50 pmABE - EDI
2 stops17h 35mDelta
Tue 5/136:00 amEDI - ABE
2 stops16h 06mDelta
Deal found 4/27$1,023
This KLM deal was found by Cheapflights users on 4/28. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/281:12 pmABE - EDI
1 stop17h 53mKLM
Wed 6/119:00 amEDI - ABE
1 stop13h 25mKLM
Deal found 4/28$1,110
This Delta deal was found by Cheapflights users on 4/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/116:05 pmABE - LCY
2 stops17h 35mDelta
Wed 6/187:45 amLCY - ABE
2 stops19h 44mDelta
Deal found 4/28$1,128
This American Airlines deal was found by Cheapflights users on 4/28. 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 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 stop14h 03mAmerican Airlines
Sat 5/313:00 pmLHR - ABE
1 stop14h 40mAmerican Airlines
Deal found 4/28$1,253
This United Airlines deal was found by Cheapflights users on 4/28. 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.
Thu 5/296:30 amABE - LCY
2 stops20h 50mMultiple Airlines
Wed 6/118:45 amLCY - ABE
2 stops18h 10mMultiple Airlines
Deal found 4/28$1,286
This Mytrip deal was found by Cheapflights users on 4/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/58:00 amABE - LHR
3 stops46h 55mMultiple Airlines
Tue 10/2110:05 pmLHR - ABE
2 stops27h 17mMultiple Airlines
Deal found 4/28$1,297
This United Airlines deal was found by Cheapflights users on 4/28. 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.
Wed 8/205:28 pmABE - EDI
2 stops32h 52mUnited Airlines
Sun 9/79:00 amEDI - ABE
2 stops36h 53mUnited Airlines
Deal found 4/28$1,907

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 April 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

Wed 10/8

1:00 pm-1:30 pm

1 stop19h 30m

London Heathrow

Wed 10/15

6:15 am-11:23 pm

2 stops22h 08m

$601

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Wed 9/10

1:00 pm-1:30 pm

1 stop19h 30m

London Heathrow

Sun 9/28

9:20 am-11:23 pm

1 stop19h 03m

$659

AllentownLondon

ABE - LGW

ABELGW

Allentown-Bethlehem

Fri 5/9

6:00 am-10:00 am

1 stop23h 00m

London Gatwick

Wed 5/14

2:00 pm-7:56 pm

1 stop34h 56m

$835

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Mon 5/12

5:32 pm-11:45 am

1 stop13h 13m

London Heathrow

Sun 5/25

8:30 am-4:59 pm

1 stop13h 29m

$849

AllentownEdinburgh

ABE - EDI

ABEEDI

Allentown-Bethlehem

Fri 5/9

5:50 pm-4:25 pm

2 stops17h 35m

Edinburgh Turnhouse

Tue 5/13

6:00 am-5:06 pm

2 stops16h 06m

$1,023

AllentownEdinburgh

ABE - EDI

ABEEDI

Allentown-Bethlehem

Wed 5/28

1:12 pm-12:05 pm

1 stop17h 53m

Edinburgh Turnhouse

Wed 6/11

9:00 am-5:25 pm

1 stop13h 25m

$1,110

AllentownLondon

ABE - LCY

ABELCY

Allentown-Bethlehem

Wed 6/11

6:05 pm-4:40 pm

2 stops17h 35m

London City

Wed 6/18

7:45 am-10:29 pm

2 stops19h 44m

$1,128

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Wed 5/21

5:27 pm-12:30 pm

1 stop14h 03m

London Heathrow

Sat 5/31

3:00 pm-12:40 am

1 stop14h 40m

$1,253

AllentownLondon

ABE - LCY

ABELCY

Allentown-Bethlehem

Thu 5/29

6:30 am-8:20 am

2 stops20h 50m

London City

Wed 6/11

8:45 am-9:55 pm

2 stops18h 10m

$1,286

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Sun 10/5

8:00 am-11:55 am

3 stops46h 55m

London Heathrow

Tue 10/21

10:05 pm-8:22 pm

2 stops27h 17m

$1,297

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/27

Showing 1-10 of 20 results
1
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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, November is the cheapest month in which you can book a flight from Allentown to United Kingdom (average of $661). Flying from Allentown to United Kingdom 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 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 April 29, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Allentown to United Kingdom as you normally would.

Rainfall in United Kingdom by month

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

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

Temperature in United Kingdom by month

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

If weather is an important factor for your trip to United Kingdom, 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 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 April 29, 2025.
See what other customers who have flown with Delta, KLM and United Airlines from Allentown to United Kingdom have to say. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,929 reviews

Comfort

7.9

Food

7.3

Crew

8.5

Overall

8.0

Entertainment

7.9

Boarding

8.2

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.
Delta
8.0
Very good
7,929 reviews
Delta
8.0
Very good
7,929 reviews

Comfort

7.9

Food

7.3

Crew

8.5

Overall

8.0

Entertainment

7.9

Boarding

8.2

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.
KLM
7.8
Good
1,334 reviews
Delta
8.0
Very good
7,929 reviews

Comfort

7.9

Food

7.3

Crew

8.5

Overall

8.0

Entertainment

7.9

Boarding

8.2

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.
United Airlines
7.4
Good
8,696 reviews
Delta
8.0
Very good
7,929 reviews

Comfort

7.9

Food

7.3

Crew

8.5

Overall

8.0

Entertainment

7.9

Boarding

8.2

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.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,929 reviews

Comfort

7.9

Food

7.3

Crew

8.5

Overall

8.0

Entertainment

7.9

Boarding

8.2

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 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.

  • What are the cheapest airlines to fly from Allentown to United Kingdom one-way?

    For one-way options, check prices for Delta. According to our data, you can fly for as low as $399. Users have also found prices from $423 and $539 on United Airlines and KLM, respectively.

  • 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 - Manchester and Allentown-Bethlehem - London City.

  • 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, November is the cheapest month in which you can book a flight from Allentown to United Kingdom (average of $661). Flying from Allentown to United Kingdom 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

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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 3 airlines flying from Allentown to United Kingdom

Discover the top 3 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 April 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$575Average$833FlexibilityNo cancel feeOn-time69%
DeltaCheapest$597Average$777FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$639Average$782FlexibilityNo cancel feeOn-time71%

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