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Cheap flights from the United Kingdom to Allentown from £432

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 16/6. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — ABE
25 Mar — 1 Apr1
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 23 February 2026.

Wed 8/413:25
LHR
-
ABE
1 stop14h 27m
Virgin Atlantic
Wed 15/417:59
ABE
-
LHR
1 stop14h 16m
Virgin Atlantic
Deal found 22/2£617
Sat 18/411:15
LHR
-
ABE
1 stop16h 45m
Virgin Atlantic
Mon 20/417:59
ABE
-
LHR
1 stop14h 16m
Virgin Atlantic
Deal found 21/2£618
Wed 8/408:40
LHR
-
ABE
2 stops19h 12m
Delta
Wed 15/412:52
ABE
-
LHR
2 stops18h 13m
Delta
Deal found 22/2£633
Tue 7/413:25
LHR
-
ABE
1 stop27h 51m
Delta
Tue 14/412:52
ABE
-
LHR
2 stops18h 13m
Delta
Deal found 21/2£645
Sat 18/411:15
LHR
-
ABE
1 stop16h 45m
Delta
Mon 20/406:33
ABE
-
LHR
2 stops22h 47m
Delta
Deal found 21/2£647
Tue 10/319:20
LHR
-
ABE
2 stops31h 36m
Virgin Atlantic
Sat 14/312:51
ABE
-
LHR
2 stops38h 59m
Virgin Atlantic
Deal found 22/2£648
Tue 7/409:15
LHR
-
ABE
1 stop19h 13m
American Airlines
Tue 14/412:57
ABE
-
LHR
1 stop15h 08m
American Airlines
Deal found 21/2£653
Sat 18/407:30
LHR
-
ABE
2 stops18h 47m
United Airlines
Mon 20/417:38
ABE
-
LHR
2 stops36h 42m
United Airlines
Deal found 21/2£747
Tue 7/420:15
BHX
-
ABE
2 stops26h 02m
KLM
Tue 14/417:59
ABE
-
BHX
2 stops17h 51m
KLM
Deal found 20/2£756
Fri 27/214:45
LHR
-
ABE
1 stop14h 44m
American Airlines
Wed 15/412:00
ABE
-
LHR
2 stops17h 15m
American Airlines
Deal found 20/2£764
Fri 27/213:10
LHR
-
ABE
2 stops16h 19m
American Airlines
Fri 17/412:00
ABE
-
LHR
2 stops17h 15m
American Airlines
Deal found 20/2£794
Thu 26/206:30
LHR
-
ABE
2 stops15h 42m
Delta
Sat 18/417:59
ABE
-
LHR
2 stops21h 11m
Delta
Deal found 19/2£813

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 23 February 2026.

Round-trip from

£617

One-way from

£432

Popular in

July

Cheapest in

September

Average price

£367
Virgin Atlantic
  • Virgin Atlantic
  • 8/4-15/4
  • 2 total stops
  • 28h 43m total
  • United Kingdom to Allentown
Search Deals
Delta
  • Delta
  • 16/6
  • 1 total stop
  • 14h 31m total
  • United Kingdom to Allentown
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (£27 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£7 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 2026
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 23 February 2026.
Use the filters below to find and compare flights from the United Kingdom to Allentown that are best for you.

Fly from

United Kingdom

Fly to

Allentown

Route

Depart

Return

Price

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Wed 8/4

13:25-22:52

1 stop14h 27m

Allentown-Bethlehem

Wed 15/4

17:59-13:15

1 stop14h 16m

£617

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Wed 8/4

08:40-22:52

2 stops19h 12m

Allentown-Bethlehem

Wed 15/4

12:52-12:05

2 stops18h 13m

£633

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Tue 7/4

13:25-12:16

1 stop27h 51m

Allentown-Bethlehem

Tue 14/4

12:52-12:05

2 stops18h 13m

£645

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Tue 10/3

10:00-12:16

2 stops30h 16m

Allentown-Bethlehem

Sat 14/3

17:58-06:25

1 stop32h 27m

£645

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Sat 18/4

11:15-23:00

1 stop16h 45m

Allentown-Bethlehem

Mon 20/4

06:33-10:20

2 stops22h 47m

£647

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Tue 10/3

12:30-22:56

1 stop14h 26m

Allentown-Bethlehem

Sat 14/3

17:58-06:25

1 stop32h 27m

£656

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Sat 18/4

07:30-21:17

2 stops18h 47m

Allentown-Bethlehem

Mon 20/4

17:38-11:20

2 stops36h 42m

£747

BirminghamAllentown

BHX - ABE

BHXABE

Birmingham

Tue 7/4

20:15-17:17

2 stops26h 02m

Allentown-Bethlehem

Tue 14/4

17:59-16:50

2 stops17h 51m

£756

BirminghamAllentown

BHX - ABE

BHXABE

Birmingham

Wed 8/4

06:05-09:48

2 stops32h 43m

Allentown-Bethlehem

Wed 15/4

10:35-17:30

2 stops25h 55m

£849

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Fri 20/3

09:10-20:50

2 stops15h 40m

Allentown-Bethlehem

Fri 27/3

18:51-05:30

2 stops30h 39m

£870

Flights are sorted by cheapest return flights first.

Deals found on 20/2

Showing 1-10 of 33 results
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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

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

Currently, March is the cheapest month in which you can book a flight from United Kingdom to Allentown (average of £297). Flying from United Kingdom to Allentown in June is currently the most expensive (average of £354). 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.

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 Virgin Atlantic, Delta, and KLM fly from United Kingdom to Allentown in about 14h 27m. The time it takes to get you to your destination can typically vary by up to 11h 35m. 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.

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

    Currently, March is the cheapest month in which you can book a flight from United Kingdom to Allentown (average of £297). Flying from United Kingdom to Allentown in June is currently the most expensive (average of £354). 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 United Kingdom to Allentown

See prices for flight routes from nearby airports that may be better suited for you.
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Fly with Cheapflights

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Why should you use Cheapflights to find cheap flight tickets from United Kingdom to Allentown?

Millions of users choose and trust Cheapflights to book the best flight deals from United Kingdom to Allentown for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from United Kingdom to Allentown with no change fees?

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.

Can Cheapflights notify me if prices for flights from United Kingdom to Allentown become cheaper?

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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