ABE - LHR

$334 Find Cheap Flights from Allentown to London - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$758
Typical prices: $926-$1,120
United Airlines
Thu 3/1Fri 3/2
ABE - LHR • 1 stop
Cheapest one-way
$334
Typical prices: $398-$633
United Airlines
Wed 3/7
ABE - LHR • 1 stop
When to travel
April
Cheapest • 23% price drop
September
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Chicago O'Hare Intl (ORD)
Cheapest • Avg $1,034 (round-trip)
Philadelphia (PHL)
Shortest trip • 11h 01m (one-way)
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Flight Deals

Cheap Flights from Allentown to London (ABE-LHR)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Allentown to London

Mon, Mar 1 - Tue, Mar 2
United Airlines Logo
6:00 am - 5:55 amABE  Allentown-Bethlehem-LHR London Heathrow
18h 55m1 stop Chicago O'Hare Intl
United Airlines Logo
9:00 am - 9:13 pmLHR  London Heathrow-ABE Allentown-Bethlehem
17h 13m2 stops Zurich Chicago O'Hare Intl
$758United Airlines
Mon, Mar 1 - Tue, Mar 2
United Airlines Logo
6:00 am - 6:20 amABE  Allentown-Bethlehem-LHR London Heathrow
19h 20m2 stops Chicago O'Hare Intl Newark
United Airlines Logo
9:00 am - 9:13 pmLHR  London Heathrow-ABE Allentown-Bethlehem
17h 13m2 stops Zurich Chicago O'Hare Intl
$762United Airlines
Mon, Mar 1 - Tue, Mar 2
United Airlines Logo
6:00 am - 5:55 amABE  Allentown-Bethlehem-LHR London Heathrow
18h 55m1 stop Chicago O'Hare Intl
United Airlines Logo
11:05 am - 5:00 pmLHR  London Heathrow-ABE Allentown-Bethlehem
34h 55m2 stops Brussels Bruxelles-National Chicago O'Hare Intl
$762United Airlines
Mon, Mar 1 - Tue, Mar 2
United Airlines Logo
6:00 am - 6:20 amABE  Allentown-Bethlehem-LHR London Heathrow
19h 20m2 stops Chicago O'Hare Intl Newark
United Airlines Logo
1:45 pm - 9:36 amLHR  London Heathrow-ABE Allentown-Bethlehem
48h 51m2 stops Zurich Chicago O'Hare Intl
$767United Airlines
Sun, Feb 14 - Thu, Feb 18
United Airlines Logo
6:00 am - 5:55 amABE  Allentown-Bethlehem-LHR London Heathrow
18h 55m1 stop Chicago O'Hare Intl
United Airlines Logo
6:50 am - 9:13 pmLHR  London Heathrow-ABE Allentown-Bethlehem
19h 23m2 stops Brussels Bruxelles-National Chicago O'Hare Intl
$887United Airlines
Sun, Feb 14 - Thu, Feb 18
United Airlines Logo
6:00 am - 8:25 amABE  Allentown-Bethlehem-LHR London Heathrow
21h 25m2 stops Chicago O'Hare Intl Newark
United Airlines Logo
6:50 am - 5:00 pmLHR  London Heathrow-ABE Allentown-Bethlehem
15h 10m2 stops Brussels Bruxelles-National Chicago O'Hare Intl
$892United Airlines
Sun, Feb 14 - Thu, Feb 18
United Airlines Logo
6:00 am - 5:55 amABE  Allentown-Bethlehem-LHR London Heathrow
18h 55m1 stop Chicago O'Hare Intl
United Airlines Logo
7:40 am - 9:13 pmLHR  London Heathrow-ABE Allentown-Bethlehem
18h 33m1 stop Chicago O'Hare Intl
$922United Airlines
Mon, Mar 1 - Tue, Mar 2
United Airlines Logo
6:00 am - 5:55 amABE  Allentown-Bethlehem-LHR London Heathrow
18h 55m1 stop Chicago O'Hare Intl
United Airlines Logo
10:25 am - 9:13 pmLHR  London Heathrow-ABE Allentown-Bethlehem
15h 48m1 stop Chicago O'Hare Intl
$923United Airlines
Sun, Mar 21 - Sat, Mar 27
Delta Logo
1:00 pm - 11:40 amABE  Allentown-Bethlehem-LHR London Heathrow
18h 40m1 stop Atlanta Hartsfield-Jackson
Delta Logo
4:00 pm - 12:04 pmLHR  London Heathrow-ABE Allentown-Bethlehem
24h 04m1 stop Atlanta Hartsfield-Jackson
$1,041Delta
Thu, May 13 - Sat, May 22
Air France Logo
5:40 pm - 11:20 amABE  Allentown-Bethlehem-LHR London Heathrow
12h 40m1 stop Atlanta Hartsfield-Jackson
Air France Logo
8:55 am - 10:46 pmLHR  London Heathrow-ABE Allentown-Bethlehem
18h 51m2 stops Paris Charles de Gaulle Atlanta Hartsfield-Jackson
$1,052Air France
Booking Insights

Price, demand and travel trends for Allentown to London Heathrow Airport flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

How much is a round-trip flight from Allentown to London Heathrow Airport?

Round-trip flights from Allentown to London Heathrow Airport typically range from $926 to $1,120. The lowest price found in the past 5 days was $758, on United Airlines.

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Key details for Allentown to London Heathrow Airport flights

Cheapest flight

$334
The most popular month to fly with an average 45% increase in travelers.
One-way flight from Allentown to London Heathrow Airport

When to book flights from Allentown to London

Are your dates flexible? Find out the best times to travel from Allentown to London based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Allentown to London Heathrow Airport flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • What cabin classes can I book on flights from Allentown to London Heathrow Airport?

    Only Economy Class is available on flights from Allentown to London Heathrow Airport.

  • How long is a flight from Allentown to London Heathrow Airport?

    There are currently no nonstop flights available from Allentown to London Heathrow Airport. Flights with 1 layover take between 11h 01m and 14h 26m in total, depending on the connection.

  • Do I need a passport to fly from Allentown to London Heathrow Airport?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How much should I expect to pay for a Allentown to London Heathrow Airport flight?

    Round-trip flights from Allentown to London Heathrow Airport range from $926 to $1,120, with an average of $956 over the past 12 months. Anything below $926 counts as a good deal.

  • Have flight prices from Allentown to London Heathrow Airport changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $758 to $5,135. That means the highest observed fare was about 7x higher than the lowest one.

  • How are flight prices from Allentown to London Heathrow Airport looking right now?

    One-way fares from Allentown to London Heathrow Airport are currently higher than usual. Average one-way flight prices are about $755, which is 31% above the typical average for this route.

  • What car rental options are available at London Heathrow Airport (LHR)?

    London Heathrow Airport (LHR) hosts 5 major car rental companies, with daily rates averaging $39 for economy cars. Top options include:

    • GREEN MOTION
    • DRIVALIA
    • Europcar
    • Alamo
    • Rentacar

  • Which airports can I use when flying from Allentown to London Heathrow Airport?

    Flights from Allentown to London Heathrow Airport usually depart from Allentown-Bethlehem (ABE) and arrive at London Heathrow (LHR).

  • Which airports do connecting flights from Allentown to London Heathrow Airport pass through?

    One-stop flights from Allentown to London Heathrow Airport most commonly connect through:

    • Chicago O'Hare Intl (ORD) - 52% of one-stop connections
    • Atlanta Hartsfield-Jackson (ATL) - 27% of one-stop connections
    • Philadelphia (PHL) - 12% of one-stop connections
    • Charlotte Douglas (CLT) - 9% of one-stop connections

  • Can I save money by using flexible dates for flights from Allentown to London Heathrow Airport?

    Yes. Flexible dates can save you up to 27% on flights from Allentown to London Heathrow Airport. Monday is the cheapest departure day at $798 round-trip on average, while Tuesday is the most expensive at $1,083, a difference of $285.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • How much time can I save by choosing a different layover airport from Allentown to London Heathrow Airport?

    Flying via Philadelphia (PHL) gives the shortest average 1-stop total travel time at 11h 01m, compared with 11h 41m via Charlotte Douglas (CLT) and 13h 19m via Chicago O'Hare Intl (ORD).

  • What is the time difference between Allentown and London Heathrow Airport?

    London Heathrow Airport is 5 hours ahead of Allentown (British Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.

  • What popular places can I visit in London Heathrow Airport?

    Some of the most popular sights in London Heathrow Airport are Hyde Park and Buckingham Palace. These are among the most viewed places in London Heathrow Airport on KAYAK.

Your guide to booking Allentown to London Heathrow Airport flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Monday departure and avoid flying on Tuesday. On this route, Monday flights average $798, about $285 less than Tuesday fares (26% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Allentown to London Heathrow Airport trip for April. Fares historically average $736 round-trip in that month - typically $384 less than the most expensive month, which is December (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to London Heathrow Airport.

    • Hilton London Heathrow Airport

More options for your flight from Allentown to London

Complete your trip to London with a hotel stay or car rental

Car rentals in London
Hotels in London
Vacations in London