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Cheap flights from the United Kingdom to Allentown from £454

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 8/5. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — ABE
15 Feb — 22 Feb1
1 adult
1 adult, Economy, 0 bags

Cheap 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 16 January 2026.

Round-trip from

£555

One-way from

£454
Delta
  • Delta
  • 28/2-7/3
  • 4 total stops
  • 35h 09m total
  • United Kingdom to Allentown
Search Deals
Delta
  • Delta
  • 8/5
  • 1 total stop
  • 16h 41m total
  • United Kingdom to Allentown
Search Deals

Find 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 16 January 2026.

Sat 28/206:30
LHR
-
ABE
2 stops15h 42m
Delta
Sat 7/306:28
ABE
-
LHR
2 stops19h 27m
Delta
Deal found 14/1£555
Tue 31/311:45
LHR
-
ABE
2 stops29h 21m
Delta
Sat 4/417:59
ABE
-
LHR
2 stops31h 31m
Delta
Deal found 14/1£579
Thu 5/212:05
LHR
-
ABE
2 stops51h 36m
United Airlines
Mon 9/211:30
ABE
-
LHR
1 stop13h 25m
United Airlines
Deal found 14/1£607
Mon 30/317:35
LHR
-
ABE
2 stops28h 42m
Delta
Sat 4/417:59
ABE
-
LHR
1 stop31h 46m
Delta
Deal found 14/1£652
Fri 27/315:25
LHR
-
ABE
2 stops24h 05m
American Airlines
Sat 4/412:00
ABE
-
LHR
2 stops17h 15m
American Airlines
Deal found 14/1£713
Fri 27/315:25
LHR
-
ABE
2 stops24h 05m
American Airlines
Tue 31/312:45
ABE
-
LHR
2 stops16h 30m
American Airlines
Deal found 14/1£720
Thu 5/206:00
MAN
-
ABE
2 stops57h 41m
United Airlines
Mon 9/216:57
ABE
-
MAN
2 stops40h 53m
United Airlines
Deal found 15/1£737
Sun 1/306:00
BHX
-
ABE
2 stops19h 53m
United Airlines
Sun 8/310:31
ABE
-
BHX
2 stops22h 04m
United Airlines
Deal found 15/1£770
Sun 1/306:00
MAN
-
ABE
2 stops19h 53m
United Airlines
Sun 8/310:31
ABE
-
MAN
2 stops18h 14m
United Airlines
Deal found 15/1£771
Sat 28/206:00
BHX
-
ABE
2 stops33h 01m
United Airlines
Sat 7/318:30
ABE
-
BHX
2 stops37h 05m
United Airlines
Deal found 13/1£805
Tue 3/209:25
EDI
-
ABE
2 stops35h 57m
United Airlines
Sat 7/211:30
ABE
-
EDI
2 stops15h 25m
United Airlines
Deal found 15/1£1,529

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 16 January 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

Sat 28/2

06:30-17:12

2 stops15h 42m

Allentown-Bethlehem

Sat 7/3

06:28-06:55

2 stops19h 27m

£555

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Tue 31/3

11:45-12:06

2 stops29h 21m

Allentown-Bethlehem

Sat 4/4

17:59-06:45

1 stop31h 46m

£579

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Thu 5/2

12:05-10:41

2 stops51h 36m

Allentown-Bethlehem

Mon 9/2

11:30-05:55

1 stop13h 25m

£607

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Fri 27/3

15:25-11:30

2 stops24h 05m

Allentown-Bethlehem

Sat 4/4

12:00-10:15

2 stops17h 15m

£713

ManchesterAllentown

MAN - ABE

MANABE

Manchester

Thu 5/2

06:00-10:41

2 stops57h 41m

Allentown-Bethlehem

Mon 9/2

16:57-14:50

2 stops40h 53m

£737

BirminghamAllentown

BHX - ABE

BHXABE

Birmingham

Sun 1/3

06:00-20:53

2 stops19h 53m

Allentown-Bethlehem

Sun 8/3

10:31-12:35

2 stops22h 04m

£770

ManchesterAllentown

MAN - ABE

MANABE

Manchester

Sun 1/3

06:00-20:53

2 stops19h 53m

Allentown-Bethlehem

Sun 8/3

10:31-08:45

2 stops18h 14m

£771

BirminghamAllentown

BHX - ABE

BHXABE

Birmingham

Sat 28/2

06:00-10:01

2 stops33h 01m

Allentown-Bethlehem

Sat 7/3

18:30-12:35

2 stops37h 05m

£805

EdinburghAllentown

EDI - ABE

EDIABE

Edinburgh Turnhouse

Tue 3/2

09:25-16:22

2 stops35h 57m

Allentown-Bethlehem

Sat 7/2

11:30-07:55

2 stops15h 25m

£1,529

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Fri 8/5

10:45-22:56

2 stops17h 11m

£454

Flights are sorted by cheapest return flights first.

Deals found on 15/1

Showing 1-10 of 12 results
1
2

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 £211). Flying from United Kingdom to Allentown in June is currently the most expensive (average of £356). 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 Allentown

Get insights into the airlines that provide service to Allentown. 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 Allentown. Reviews last updated 16 January 2026.
Check out reviews from past customers who have flown with Finnair from the United Kingdom to Allentown to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Finnair
7.6
Good
1,350 reviews
Check prices

Comfort

7.5

Boarding

7.7

Food

6.7

Crew

8.2

Overall

7.6

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
Finnair
7.6
Good
1,350 reviews
Finnair
7.6
Good
1,350 reviews
Check prices

Comfort

7.5

Boarding

7.7

Food

6.7

Crew

8.2

Overall

7.6

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.

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 Delta and United Airlines fly from United Kingdom to Allentown in about 15h 42m. The time it takes to get you to your destination can typically vary by up to 35h 54m. 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 Edinburgh Turnhouse - 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 £211). Flying from United Kingdom to Allentown in June is currently the most expensive (average of £356). 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 United Kingdom to Allentown

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

Discover the top airline that operate flights from United Kingdom to Allentown. 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 858,174 searches. Data last updated 16 January 2026.
AirlineCheapestAverageFlexibilityOn-time
FinnairCheapest£531Average£567FlexibilityNo cancel feeOn-time76%
Search Finnair flights

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?

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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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