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Cheap flights from Allentown to London from $406

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Allentown to London departing on 2/15. 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 Allentown to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
Virgin Atlantic Logo
6:00 pm - 11:40 amABE-LHR
12h 40m1 stop
Virgin Atlantic Logo
3:45 pm - 9:26 pmLHR-ABE
58h 41m2 stops
$572Virgin Atlantic
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Mon, Nov 10 - Wed, Nov 26
Virgin Atlantic Logo
6:00 pm - 11:40 amABE-LHR
12h 40m1 stop
Virgin Atlantic Logo
10:45 am - 10:12 pmLHR-ABE
16h 27m1 stop
$583Virgin Atlantic
Find Deal
Mon, Nov 10 - Wed, Nov 26
Delta Logo
6:00 pm - 11:40 amABE-LHR
12h 40m1 stop
Delta Logo
6:30 am - 5:19 pmLHR-ABE
15h 49m2 stops
$593Delta
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Sun, Nov 9 - Tue, Nov 18
Delta Logo
6:10 am - 6:25 amABE-LHR
19h 15m1 stop
Delta Logo
8:55 am - 10:12 pmLHR-ABE
18h 17m1 stop
$600Delta
Find Deal
Sun, Nov 9 - Tue, Nov 18
United Airlines Logo
11:30 am - 7:10 amABE-LHR
38h 40m2 stops
United Airlines Logo
9:00 am - 9:15 pmLHR-ABE
17h 15m2 stops
$628United Airlines
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Sat, Jan 17 - Tue, Jan 27
United Airlines Logo
5:22 pm - 11:15 amABE-LHR
13h 53m1 stop
United Airlines Logo
1:30 pm - 4:47 pmLHR-ABE
32h 17m2 stops
$650United Airlines
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Mon, Oct 27 - Mon, Nov 3
Multiple Airlines Logo
1:00 pm - 7:55 amABE-LHR
13h 55m1 stop
Multiple Airlines Logo
6:50 am - 4:47 pmLHR-ABE
14h 57m2 stops
$711Multiple Airlines
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Wed, Nov 26 - Wed, Dec 3
Multiple Airlines Logo
1:00 pm - 4:40 pmABE-LCY
22h 40m2 stops
Multiple Airlines Logo
9:50 am - 11:52 amLCY-ABE
31h 02m3 stops
$766Multiple Airlines
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Wed, Nov 26 - Wed, Dec 3
American Airlines Logo
1:46 pm - 9:15 amABE-LHR
14h 29m1 stop
American Airlines Logo
9:55 am - 10:53 pmLHR-ABE
17h 58m1 stop
$850American Airlines
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Wed, Nov 19 - Wed, Nov 26
American Airlines Logo
7:30 am - 7:20 amABE-LHR
18h 50m1 stop
American Airlines Logo
4:10 pm - 4:37 pmLHR-ABE
29h 27m2 stops
$852American Airlines
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Wed, Nov 19 - Thu, Nov 27

Virgin Atlantic flights from Allentown to London

Our best Virgin Atlantic deals on Allentown to London flight tickets
Virgin Atlantic
Nov 10
ABE6:00 pmAllentown-Bethlehem
12h 40m
1 stop
LHR11:40 amLondon Heathrow
Nov 26
LHR3:45 pmLondon Heathrow
58h 41m
2 stops
ABE9:26 pmAllentown-Bethlehem
$572
Find similar
Virgin Atlantic
Nov 10
ABE6:00 pmAllentown-Bethlehem
12h 40m
1 stop
LHR11:40 amLondon Heathrow
Nov 26
LHR10:45 amLondon Heathrow
16h 27m
1 stop
ABE10:12 pmAllentown-Bethlehem
$583
Find similar
Virgin Atlantic
Nov 10
ABE6:00 pmAllentown-Bethlehem
17h 35m
2 stops
LHR4:35 pmLondon Heathrow
Nov 26
LHR3:45 pmLondon Heathrow
58h 41m
2 stops
ABE9:26 pmAllentown-Bethlehem
$586
Find similar

Delta flights from Allentown to London

Our best Delta deals on Allentown to London flight tickets
Delta
Nov 9
ABE6:00 pmAllentown-Bethlehem
12h 40m
1 stop
LHR11:40 amLondon Heathrow
Nov 18
LHR6:30 amLondon Heathrow
15h 49m
2 stops
ABE5:19 pmAllentown-Bethlehem
$593
Find similar
Delta
Nov 9
ABE6:10 amAllentown-Bethlehem
19h 15m
1 stop
LHR6:25 amLondon Heathrow
Nov 18
LHR8:55 amLondon Heathrow
18h 17m
1 stop
ABE10:12 pmAllentown-Bethlehem
$600
Find similar
Delta
Nov 27
ABE6:10 amAllentown-Bethlehem
20h 40m
1 stop
LHR7:50 amLondon Heathrow
Dec 4
LHR6:30 amLondon Heathrow
20h 41m
2 stops
ABE10:11 pmAllentown-Bethlehem
$643
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Allentown to London 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, momondo users made 832,500 searches. Data last updated October 14, 2025.
Use the filters below to find and compare flights from Allentown to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Mon 11/10

6:00 pm-11:40 am

1 stop12h 40m

London Heathrow

Wed 11/26

3:45 pm-9:26 pm

2 stops58h 41m

$572

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Mon 11/10

6:00 pm-11:40 am

1 stop12h 40m

London Heathrow

Wed 11/26

10:45 am-10:12 pm

1 stop16h 27m

$583

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Sun 11/9

6:00 pm-11:40 am

1 stop12h 40m

London Heathrow

Tue 11/18

6:30 am-5:19 pm

2 stops15h 49m

$593

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Sun 11/9

6:10 am-6:25 am

1 stop19h 15m

London Heathrow

Tue 11/18

8:55 am-10:12 pm

1 stop18h 17m

$600

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Sat 1/17

11:30 am-7:10 am

2 stops38h 40m

London Heathrow

Tue 1/27

9:00 am-9:15 pm

2 stops17h 15m

$628

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Mon 10/27

5:22 pm-11:15 am

1 stop13h 53m

London Heathrow

Mon 11/3

1:30 pm-4:47 pm

2 stops32h 17m

$650

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Wed 11/26

1:00 pm-7:55 am

1 stop13h 55m

London Heathrow

Wed 12/3

6:50 am-4:47 pm

2 stops14h 57m

$711

AllentownLondon

ABE - LCY

ABELCY

Allentown-Bethlehem

Wed 11/26

1:00 pm-4:40 pm

2 stops22h 40m

London City

Wed 12/3

9:50 am-11:52 am

3 stops31h 02m

$766

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Wed 11/19

1:46 pm-9:15 am

1 stop14h 29m

London Heathrow

Wed 11/26

9:55 am-10:53 pm

1 stop17h 58m

$850

AllentownLondon

ABE - LHR

ABELHR

Allentown-Bethlehem

Wed 11/19

7:30 am-7:20 am

1 stop18h 50m

London Heathrow

Thu 11/27

4:10 pm-4:37 pm

2 stops29h 27m

$852

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to London from

How to get the cheapest flight ticket from Allentown to London

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to London?

The cheapest day to depart from Allentown to London is on a Thursday. Travelers who choose to depart for London on a Thursday will often find tickets for as low as $774. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $1,504. These prices are subject to change though, so be sure to set up a Price Alert for flights to London.

What is the cheapest time of day to depart on your flight to London?

Flying to London from Allentown in the morning is the least expensive time of day to depart. momondo users have found prices as low as $817 when looking at flights departing in the morning. Flights to London are more costly in the evening, with an average ticket price of $1,154. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

When to book flights from Allentown to London

Are you open to changing your travel dates? Check out the ideal times to fly from Allentown to London according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Allentown to London (ABE to LON) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Allentown to London

Direct flights

None
There are no direct flights from Allentown to London. There are no popular flight routes from Allentown to London.
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  • How far is Allentown-Bethlehem to London by plane?

    There are 3523.4 mi between Allentown-Bethlehem and London. In terms of flight time, this usually takes a little over 11h 20m.

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

    Prices for flights from Allentown-Bethlehem Airport to London are refreshed on a daily basis.

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

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Allentown-Bethlehem Airport to London.

  • What documentation or ID do you need to fly to London?

    The required travel and health documents for your London 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 London. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Allentown to London

Compare and see reviews for airlines that fly from Allentown to London with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $581Free CancellationRating
7.9
7,975 reviews
Search Delta flights
United AirlinesPriceFrom $690Free CancellationRating
7.4
8,976 reviews
Search United Airlines flights

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Gatwick
Hounslow
Milton Keynes
Luton
Dover
Slough
Guildford
Dartford
Hayes
Crawley
Chelmsford
Brentwood
Colchester
Ilford
Folkestone
Romford
Cobham
Stansted
Watford
Richmond

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Allentown to London for you.

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

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

How can momondo help me find flights from Allentown to London?

momondo helps you find the best flight between Allentown and London by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Yes momondo offers price alerts on flights to London from Allentown. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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Find better results for your trip to the United Kingdom

Fly into one of these airports located in London

Airports listed have a maximum distance of 35.6 mi from London
London City Airport
London Gatwick Airport
London Heathrow Airport
London Luton Airport
London Southend Airport
London Stansted Airport