Which airlines fly to Allentown?

There may be other airlines that fly to Allentown from United Kingdom, but the most popular among our users are British Airways, Lufthansa, United Airlines and Aer Lingus. These airlines should offer flights to Allentown on a routine basis if you’re flying from one of the more popular airports in United Kingdom.

£427 Cheap Flights to Allentown in 2026

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Voted winner of Europe's Best Travel App 2023

Save money when you book flights with momondo

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from the United Kingdom to Allentown

Round-trip

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

06:30 - 22:49

LHR

ABE

21h 19m2 stops

06:28 - 08:05

ABE

LHR

20h 37m2 stops

£554Delta

Fri, 20 Feb - Fri, 27 Feb

08:55 - 22:49

LHR

ABE

18h 54m1 stop

17:58 - 11:40

ABE

LHR

12h 42m1 stop

£567Delta

Fri, 20 Feb - Fri, 27 Feb

13:45 - 10:41

LHR

ABE

49h 56m2 stops

11:30 - 11:15

ABE

LHR

18h 45m1 stop

£607United Airlines

Thu, 5 Feb - Mon, 9 Feb

12:05 - 10:41

LHR

ABE

51h 36m2 stops

16:57 - 11:15

ABE

LHR

13h 18m1 stop

£609United Airlines

Thu, 5 Feb - Mon, 9 Feb

11:10 - 10:41

LHR

ABE

28h 31m2 stops

16:57 - 07:55

ABE

LHR

33h 58m1 stop

£611United Airlines

Thu, 5 Feb - Mon, 9 Feb

07:40 - 16:22

LHR

ABE

13h 42m1 stop

11:30 - 05:55

ABE

LHR

13h 25m1 stop

£660United Airlines

Thu, 5 Feb - Mon, 9 Feb

07:40 - 16:22

LHR

ABE

13h 42m1 stop

16:57 - 11:15

ABE

LHR

13h 18m1 stop

£662United Airlines

Thu, 5 Feb - Mon, 9 Feb

15:25 - 11:30

LHR

ABE

24h 05m2 stops

12:57 - 09:35

ABE

LHR

15h 38m2 stops

£669American Airlines

Sun, 22 Mar - Tue, 14 Apr

06:35 - 21:05

LHR

ABE

19h 30m2 stops

16:57 - 15:50

ABE

LHR

17h 53m2 stops

£671United Airlines

Thu, 5 Feb - Mon, 9 Feb

12:40 - 12:06

LHR

ABE

27h 26m2 stops

17:59 - 13:15

ABE

LHR

14h 16m1 stop

£681Delta

Sun, 22 Mar - Tue, 14 Apr

Fly from

Route

Depart

Return

Price

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Fri 20/2

06:30-22:49

2 stops21h 19m

Allentown-Bethlehem

Fri 27/2

06:28-08:05

2 stops20h 37m

£554

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Fri 20/2

08:55-22:49

1 stop18h 54m

Allentown-Bethlehem

Fri 27/2

17:58-11:40

1 stop12h 42m

£567

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Thu 5/2

13:45-10:41

2 stops49h 56m

Allentown-Bethlehem

Mon 9/2

11:30-11:15

1 stop18h 45m

£607

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Thu 5/2

12:05-10:41

2 stops51h 36m

Allentown-Bethlehem

Mon 9/2

16:57-11:15

1 stop13h 18m

£609

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Thu 5/2

11:10-10:41

2 stops28h 31m

Allentown-Bethlehem

Mon 9/2

16:57-07:55

1 stop33h 58m

£611

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Thu 5/2

07:40-16:22

1 stop13h 42m

Allentown-Bethlehem

Mon 9/2

11:30-05:55

1 stop13h 25m

£660

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

£662

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Sun 22/3

15:25-11:30

2 stops24h 05m

Allentown-Bethlehem

Tue 14/4

12:57-09:35

2 stops15h 38m

£669

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

£671

LondonAllentown

LHR - ABE

LHRABE

London Heathrow

Sun 22/3

12:40-12:06

2 stops27h 26m

Allentown-Bethlehem

Tue 14/4

17:59-13:15

1 stop14h 16m

£681

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

Allentown flights insights and trends

Explore insights for your Allentown flight to craft the best travel plan

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 45m and 11h 10m, respectively.

Cheapest flights to Allentown-Bethlehem

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

Find flights from London Heathrow Airport to Newark Airport

Cheap Allentown flight deals and tips

Summary info about Allentown flight prices, duration and airlines

Best One-Way Price	£427
Best Round-Trip Price	£554
Fastest flight time	31h 44m

The best one-way flight price to Allentown from United Kingdom in the last 72 hours is £427 (London Heathrow to Allentown-Bethlehem).

Search Deals

The best round-trip flight price to Allentown from United Kingdom in the last 72 hours is £554 (London Heathrow to Allentown-Bethlehem).

Search Deals

The fastest flight to Allentown from United Kingdom takes 31h 44m (London Heathrow to Allentown-Bethlehem).

Search Deals

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?

£99 is the cheapest deal found on momondo in the last two weeks for a flight to Allentown. This flight is from Orlando and is 81% 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.