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$406+ 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 5/3. Fares are subject to change and may not be available on all flights or dates of travel.
ABE — LHR
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
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Cheap 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 January 29, 2026.

This United Airlines deal was found by Cheapflights users on 1/27. 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.
Sat 11/76:30 am
ABE
-
LHR
1 stop18h 25m
United Airlines
Sun 11/81:45 pm
LHR
-
ABE
2 stops36h 20m
United Airlines
Deal found 1/27$626
This Delta deal was found by Cheapflights users on 1/28. 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.
Thu 2/2612:47 pm
ABE
-
LHR
1 stop14h 03m
Delta
Wed 3/116:30 am
LHR
-
ABE
2 stops20h 26m
Delta
Deal found 1/28$634
This United Airlines deal was found by Cheapflights users on 1/28. 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.
Tue 4/76:15 am
ABE
-
LHR
1 stop19h 30m
United Airlines
Wed 4/228:40 am
LHR
-
ABE
2 stops30h 18m
United Airlines
Deal found 1/28$650
This United Airlines deal was found by Cheapflights users on 1/28. 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 2/2510:36 am
ABE
-
MAN
2 stops18h 44m
United Airlines
Sun 3/16:00 am
MAN
-
ABE
2 stops33h 01m
United Airlines
Deal found 1/28$656
This KLM deal was found by Cheapflights users on 1/28. 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.
Thu 2/2612:47 pm
ABE
-
LHR
1 stop14h 03m
Multiple Airlines
Wed 3/113:50 pm
LHR
-
ABE
1 stop29h 27m
Multiple Airlines
Deal found 1/28$656
This United Airlines deal was found by Cheapflights users on 1/27. 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.
Wed 10/146:30 am
ABE
-
LHR
2 stops19h 25m
United Airlines
Wed 11/49:10 am
LHR
-
ABE
2 stops16h 55m
United Airlines
Deal found 1/27$685
This United Airlines deal was found by Cheapflights users on 1/28. 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.
Sun 3/156:20 am
ABE
-
MAN
2 stops28h 30m
United Airlines
Tue 3/241:00 pm
MAN
-
ABE
2 stops48h 56m
United Airlines
Deal found 1/28$688
This United Airlines deal was found by Cheapflights users on 1/27. 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.
Wed 10/146:30 am
ABE
-
LHR
2 stops19h 25m
United Airlines
Thu 11/57:40 am
LHR
-
ABE
1 stop33h 16m
United Airlines
Deal found 1/27$691
This Delta deal was found by Cheapflights users on 1/27. 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.
Sun 10/111:00 pm
ABE
-
LHR
1 stop19h 15m
Delta
Wed 11/46:30 am
LHR
-
ABE
2 stops15h 42m
Delta
Deal found 1/27$712
This American Airlines deal was found by Cheapflights users on 1/28. 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 9/231:52 pm
ABE
-
GLA
2 stops15h 28m
American Airlines
Wed 11/48:40 am
GLA
-
ABE
2 stops19h 13m
American Airlines
Deal found 1/28$715
This Delta deal was found by Cheapflights users on 1/27. 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.
Tue 10/131:00 pm
ABE
-
LHR
2 stops19h 05m
Delta
Tue 11/38:40 am
LHR
-
ABE
2 stops19h 06m
Delta
Deal found 1/27$716
This United Airlines deal was found by Cheapflights users on 1/28. 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 3/56:20 am
ABE
-
EDI
2 stops23h 10m
United Airlines
Mon 3/911:30 am
EDI
-
ABE
2 stops50h 26m
United Airlines
Deal found 1/28$812

Find 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 January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$634
(Delta)

One-way from

$406
(Delta)
Provider with most accurate pricing for Allentown-Bethlehem-London (LON) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Allentown-Bethlehem-London (LON) flights.
Search Deals
From Allentown-Bethlehem to United Kingdom
Search Deals
One-way flight from Allentown-Bethlehem to United Kingdom
Search Deals

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 January 29, 2026.
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

Tue 4/7

6:15 am-6:45 am

1 stop19h 30m

London Heathrow

Wed 4/22

8:40 am-9:58 am

2 stops30h 18m

$650

AllentownManchester

ABE - MAN

ABEMAN

Allentown-Bethlehem

Tue 3/10

6:51 pm-10:20 am

2 stops35h 29m

Manchester

Tue 3/24

6:00 am-9:56 am

2 stops31h 56m

$656

AllentownManchester

ABE - MAN

ABEMAN

Allentown-Bethlehem

Wed 2/25

10:36 am-10:20 am

2 stops18h 44m

Manchester

Sun 3/1

6:00 am-10:01 am

2 stops33h 01m

$656

AllentownManchester

ABE - MAN

ABEMAN

Allentown-Bethlehem

Sun 3/15

6:20 am-2:50 pm

2 stops28h 30m

Manchester

Tue 3/24

1:00 pm-9:56 am

2 stops48h 56m

$688

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Fri 3/27

5:58 pm-5:25 am

1 stop31h 27m

London Heathrow

Sat 4/4

3:15 pm-5:17 pm

1 stop31h 02m

$770

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Sat 4/25

5:59 pm-11:20 am

1 stop12h 21m

London Heathrow

Sat 5/2

11:15 am-11:00 pm

1 stop16h 45m

$778

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Fri 3/13

6:51 pm-9:20 pm

2 stops22h 29m

London Heathrow

Fri 3/20

7:25 am-4:51 pm

1 stop13h 26m

$791

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Wed 4/1

6:15 am-8:30 am

1 stop21h 15m

London Heathrow

Mon 4/6

7:30 am-9:58 am

2 stops31h 28m

$791

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Sat 3/14

6:20 am-6:40 am

2 stops20h 20m

London Heathrow

Sat 3/21

4:20 pm-9:56 am

2 stops21h 36m

$798

AllentownEdinburgh

ABE - EDI

ABEEDI

Allentown-Bethlehem

Thu 3/5

6:20 am-10:30 am

2 stops23h 10m

Edinburgh Turnhouse

Mon 3/9

11:30 am-9:56 am

2 stops50h 26m

$812

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/28

Showing 1-10 of 39 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 $484). 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.

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 January 29, 2026.
Read reviews from past customers who have flown 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.
United Airlines
7.4
Good
9,215 reviews

Food

6.6

Boarding

7.7

Comfort

7.3

Overall

7.4

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,215 reviews
United Airlines
7.4
Good
9,215 reviews

Food

6.6

Boarding

7.7

Comfort

7.3

Overall

7.4

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

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?

    United Airlines, KLM, and Delta can get you from Allentown to United Kingdom in just under 12h 21m. Your travel time can differ by up to 23h 08m. 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 Gatwick and Allentown-Bethlehem - Manchester.

  • 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 $484). 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 airline flying from Allentown to United Kingdom

Discover the top airline 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 January 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$690Average$824FlexibilityNo cancel feeOn-time69%

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