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Flights to Allentown-Bethlehem

£542 Cheap flights to Allentown

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight to Allentown departing on 19/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from the United Kingdom to Allentown

Cheap return flights

Enter your travel dates to find the best prices.
Delta Logo
06:30 - 22:49
LHR
-
ABE
21h 19m2 stops
Delta Logo
12:47 - 08:00
ABE
-
LHR
14h 13m2 stops
£579Delta
Sat, 14 Feb - Sat, 21 Feb
Delta Logo
06:30 - 22:49
LHR
-
ABE
21h 19m2 stops
Delta Logo
12:47 - 06:25
ABE
-
LHR
12h 38m1 stop
£586Delta
Sat, 14 Feb - Sat, 21 Feb
Delta Logo
08:55 - 22:49
LHR
-
ABE
18h 54m1 stop
Delta Logo
12:47 - 06:25
ABE
-
LHR
12h 38m1 stop
£597Delta
Sat, 14 Feb - Sat, 21 Feb
United Airlines Logo
09:00 - 10:41
LHR
-
ABE
30h 41m2 stops
United Airlines Logo
16:57 - 11:15
ABE
-
LHR
13h 18m1 stop
£606United Airlines
Thu, 5 Feb - Mon, 9 Feb
United Airlines Logo
06:35 - 10:41
LHR
-
ABE
33h 06m2 stops
United Airlines Logo
16:57 - 11:15
ABE
-
LHR
13h 18m1 stop
£610United Airlines
Thu, 5 Feb - Mon, 9 Feb
United Airlines Logo
06:30 - 10:41
LHR
-
ABE
33h 11m2 stops
United Airlines Logo
16:57 - 11:15
ABE
-
LHR
13h 18m1 stop
£611United Airlines
Thu, 5 Feb - Mon, 9 Feb
United Airlines Logo
07:40 - 16:22
LHR
-
ABE
13h 42m1 stop
United Airlines Logo
16:57 - 11:15
ABE
-
LHR
13h 18m1 stop
£659United Airlines
Thu, 5 Feb - Mon, 9 Feb
United Airlines Logo
07:40 - 16:22
LHR
-
ABE
13h 42m1 stop
United Airlines Logo
16:57 - 11:15
ABE
-
LHR
13h 18m1 stop
£660United Airlines
Thu, 5 Feb - Mon, 9 Feb
United Airlines Logo
06:35 - 21:05
LHR
-
ABE
19h 30m2 stops
United Airlines Logo
16:57 - 15:50
ABE
-
LHR
17h 53m2 stops
£670United Airlines
Thu, 5 Feb - Mon, 9 Feb
United Airlines Logo
13:35 - 10:01
LHR
-
ABE
25h 26m1 stop
United Airlines Logo
17:23 - 11:15
ABE
-
LHR
12h 52m1 stop
£681United Airlines
Thu, 12 Feb - Thu, 19 Feb

momondo Fare Finder

 
Locate flights to Allentown-Bethlehem that fit your budget, with regularly updated fares and availability. In the last 7 days, momondo users made a total of 279,928 searches and data was last updated on 1 January 2026.
Use the filters below to find and compare flights to Allentown that are best for you.

Fly from

Route

Depart

Return

Price

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Sat 14/2

06:30-22:49

2 stops21h 19m

Allentown-Bethlehem

Sat 21/2

12:47-08:00

2 stops14h 13m

£579

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Sat 14/2

06:30-22:49

2 stops21h 19m

Allentown-Bethlehem

Sat 21/2

12:47-06:25

1 stop12h 38m

£586

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Sat 14/2

08:55-22:49

1 stop18h 54m

Allentown-Bethlehem

Sat 21/2

12:47-06:25

1 stop12h 38m

£597

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Thu 5/2

09:00-10:41

2 stops30h 41m

Allentown-Bethlehem

Mon 9/2

16:57-11:15

1 stop13h 18m

£606

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Thu 5/2

06:35-10:41

2 stops33h 06m

Allentown-Bethlehem

Mon 9/2

16:57-11:15

1 stop13h 18m

£610

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Thu 5/2

06:30-10:41

2 stops33h 11m

Allentown-Bethlehem

Mon 9/2

16:57-11:15

1 stop13h 18m

£611

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Thu 5/2

07:40-16:22

1 stop13h 42m

Allentown-Bethlehem

Mon 9/2

16:57-11:15

1 stop13h 18m

£659

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Thu 5/2

07:40-16:22

1 stop13h 42m

Allentown-Bethlehem

Mon 9/2

16:57-11:15

1 stop13h 18m

£660

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Thu 5/2

06:35-21:05

2 stops19h 30m

Allentown-Bethlehem

Mon 9/2

16:57-15:50

2 stops17h 53m

£670

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Thu 12/2

13:35-10:01

1 stop25h 26m

Allentown-Bethlehem

Thu 19/2

17:23-11:15

1 stop12h 52m

£681

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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Allentown flights insights and trends

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How long does it take to fly to Allentown?

If you’re flying from a popular airport in United Kingdom, such as London Heathrow or Manchester, and flying into Allentown, then you can expect flight times to average 7h 50m and 11h 20m, respectively.

Cheapest flights to Allentown-Bethlehem

Find the cheapest flights to Allentown-Bethlehem from your nearest city or airport

Cheap Allentown flight deals and tips

Summary info about Allentown flight prices, duration and airlines

Best One-Way Price

£542

Best Round-Trip Price

£579

Fastest flight time

16h 28m
The best one-way flight price to Allentown from United Kingdom in the last 72 hours is £542 (London Heathrow to Allentown-Bethlehem).
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The best round-trip flight price to Allentown from United Kingdom in the last 72 hours is £579 (London Heathrow to Allentown-Bethlehem).
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The fastest flight to Allentown from United Kingdom takes 16h 28m (Edinburgh Turnhouse to Allentown-Bethlehem).
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Frequently asked questions about flying to Allentown

Is there an alternative airport near Allentown?

Allentown-Bethlehem Airport, Trenton-Mercer Airport, Philadelphia Airport, Wilkes-Barre Scranton Airport or Lancaster Airport can be an alternative airport used for travel to Allentown.

Is there a cheaper alternative to flying into Allentown?

Wilkes-Barre Scranton Airport has an average price of £257 per person and is typically the cheapest airport to fly into when visiting Allentown. This average price does vary based on departure city. Try momondo’s Airport-to-Airport Pricing Tool to find the cheapest flight.

What is the absolute cheapest flight to Allentown?

£81 is the cheapest deal found on momondo in the last two weeks for a flight to Allentown. This flight is from Boston and is 84% cheaper than most flights to Allentown. To find the cheapest price to Allentown from your area, use momondo’s Airport-to-Airport Pricing Tool.

When did momondo last update prices for flights to Allentown-Bethlehem Airport?

Prices for flights to Allentown-Bethlehem Airport were last updated today.

How many operators does momondo search for flights to Allentown-Bethlehem Airport?

As of January 2026, there is 1 operator available to choose from for flights to Allentown-Bethlehem Airport.

How old do you have to be to fly to Allentown-Bethlehem Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel to Allentown-Bethlehem Airport.

What documentation or ID do you need to fly to Allentown-Bethlehem Airport?

The required travel and health documents for your Allentown-Bethlehem Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Allentown-Bethlehem Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Why use momondo?

Why should I use momondo to find a flight deal to Allentown?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight to Allentown. momondo saves you time and could save you money on your trip.

Can I find flights to Allentown with flexible booking policies on momondo?

Yes. All flights to Allentown on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights to Allentown?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as filter your options to help you make an informed choice when booking flights to Allentown.

I’m not ready to book a flight to Allentown right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Allentown flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Find better results for your trip to Allentown

Popular Flights to Allentown

Popular routes according to searches in the past day on momondo
London to Allentown-Bethlehem Flightsfrom £779
Manchester to Allentown-Bethlehem Flightsfrom £971
Edinburgh Turnhouse to Allentown-Bethlehem Flightsfrom £1,106
Birmingham to Allentown-Bethlehem Flightsfrom £1,021
Bristol to Allentown-Bethlehem Flightsfrom £1,745