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Cheap flights from the United Kingdom to Allentown from £485

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 24/8. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — ABE
19 Jun — 26 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from United Kingdom to Allentown

Enter your travel dates to find the best prices.

Cheapest flights from United Kingdom to Allentown
Explore the most affordable flight options available from United Kingdom to Allentown. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 May 2026.

Mon 21/918:05
LHR
-
ABE
2 stops29h 05m
Multiple Airlines
Mon 28/920:02
ABE
-
LHR
1 stop11h 08m
Multiple Airlines
Deal found 17/5£686
Mon 21/915:00
LHR
-
ABE
1 stop12h 14m
American Airlines
Mon 28/920:02
ABE
-
LHR
1 stop11h 08m
American Airlines
Deal found 17/5£718
Mon 22/606:30
LHR
-
ABE
2 stops21h 38m
Delta
Thu 23/713:08
ABE
-
LHR
1 stop12h 17m
Delta
Deal found 15/5£727
Tue 23/609:20
LHR
-
ABE
1 stop32h 07m
Delta
Thu 23/713:08
ABE
-
LHR
1 stop12h 17m
Delta
Deal found 15/5£740
Thu 4/608:05
LHR
-
ABE
1 stop20h 34m
Multiple Airlines
Tue 23/610:19
ABE
-
LHR
1 stop16h 36m
Multiple Airlines
Deal found 15/5£744
Thu 25/615:15
LHR
-
ABE
1 stop26h 12m
Delta
Sun 26/718:05
ABE
-
LHR
1 stop31h 20m
Delta
Deal found 15/5£770
Wed 10/615:15
LHR
-
ABE
1 stop31h 15m
Virgin Atlantic
Tue 16/618:10
ABE
-
LHR
1 stop14h 05m
Virgin Atlantic
Deal found 15/5£774
Tue 17/1109:40
MAN
-
ABE
2 stops17h 35m
American Airlines
Mon 7/1217:18
ABE
-
MAN
2 stops15h 42m
American Airlines
Deal found 16/5£777
Sun 22/1110:55
MAN
-
ABE
2 stops35h 17m
Delta
Wed 2/1206:30
ABE
-
MAN
2 stops28h 35m
Delta
Deal found 16/5£783
Sun 22/1110:55
MAN
-
ABE
2 stops35h 17m
Delta
Mon 7/1217:40
ABE
-
MAN
2 stops21h 20m
Delta
Deal found 16/5£787
Sun 31/520:55
LHR
-
ABE
2 stops30h 23m
KLM
Sun 7/618:10
ABE
-
LHR
1 stop31h 15m
KLM
Deal found 15/5£789
Thu 25/615:15
LHR
-
ABE
1 stop26h 12m
Delta
Sat 25/712:53
ABE
-
LHR
1 stop12h 32m
Delta
Deal found 15/5£800

Find flight deals from United Kingdom to Allentown

Keep the following information in mind while searching for United Kingdom to Allentown flight deals. Data was last updated 20 May 2026.

Round-trip from

£686

One-way from

£485
Finnair
  • Finnair
  • 21/9-28/9
  • 3 total stops
  • 40h 13m total
  • United Kingdom to Allentown
Search Deals
Delta
  • Delta
  • 24/8
  • 1 total stop
  • 13h 10m total
  • United Kingdom to Allentown
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from United Kingdom to Allentown 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 858,174 searches. Data last updated 20 May 2026.
Use the filters below to find and compare flights from the United Kingdom to Allentown that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Mon 21/9

18:05-18:10

2 stops29h 05m

Allentown-Bethlehem

Mon 28/9

20:02-12:10

1 stop11h 08m

£686
Fastest return journey

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Mon 21/9

15:00-22:14

1 stop12h 14m

Allentown-Bethlehem

Mon 28/9

20:02-12:10

1 stop11h 08m

£718

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Thu 4/6

08:40-22:18

2 stops18h 38m

Allentown-Bethlehem

Tue 23/6

13:12-13:50

2 stops19h 38m

£834

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Tue 23/6

15:15-23:19

1 stop13h 04m

Allentown-Bethlehem

Tue 30/6

06:00-06:50

1 stop19h 50m

£844

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Sat 27/6

09:20-17:25

1 stop13h 05m

Allentown-Bethlehem

Sat 25/7

12:53-06:25

1 stop12h 32m

£864

EdinburghAllentown

EDI - ABE

EDIABE

Edinburgh Turnhouse

Fri 13/11

09:25-10:06

2 stops29h 41m

Allentown-Bethlehem

Tue 17/11

17:36-07:55

2 stops33h 19m

£882

BirminghamAllentown

BHX - ABE

BHXABE

Birmingham

Thu 12/11

06:00-10:06

2 stops33h 06m

Allentown-Bethlehem

Mon 16/11

17:36-08:05

2 stops33h 29m

£894

ManchesterAllentown

MAN - ABE

MANABE

Manchester

Thu 12/11

06:10-21:12

2 stops20h 02m

Allentown-Bethlehem

Mon 16/11

17:36-17:00

2 stops42h 24m

£894

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Wed 1/7

14:10-13:41

1 stop28h 31m

Allentown-Bethlehem

Wed 8/7

14:16-06:45

1 stop11h 29m

£944

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Sun 28/6

08:00-21:07

1 stop18h 07m

Allentown-Bethlehem

Tue 21/7

14:16-06:45

1 stop11h 29m

£947

Flights are sorted by cheapest return flights first.

Deals found on 19/5

Showing 1-10 of 38 resultsSorted by cheapest first
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Best time to book a flight from United Kingdom to Allentown

Have a flexible travel schedule? Discover the best time to fly to Allentown from United Kingdom with our price prediction graph.
Estimated return 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 the United Kingdom to Allentown
No data available for this route at this time. Please check back soon.

Related info for your journey

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

    For a flight from United Kingdom to Allentown, you will be flying into Allentown-Bethlehem. Allentown-Bethlehem (ABE) is just 3.9 mi from the center of the city.

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

    Airlines like American Airlines, Delta, and United Airlines fly from United Kingdom to Allentown in about 12h 14m. The time it takes to get you to your destination can typically vary by up to 17h 27m. The distance between United Kingdom and Allentown is about 3507 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

    The most popular route from United Kingdom to Allentown is London Heathrow - Allentown-Bethlehem. You may also consider Manchester - Allentown-Bethlehem or Birmingham - Allentown-Bethlehem.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from United Kingdom to Allentown by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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Alternative routes for United Kingdom to Allentown

See prices for flight routes from nearby airports that may be better suited for you.
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Yes, we can. To see specific flights from United Kingdom to Allentown with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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Not ready to book yet? You can track prices for flights from United Kingdom to Allentown on Cheapflights with our Price Alert feature and get notified when better prices are available.

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