Find flights
Deals
Insights
When to book
FAQs & Tips
Airlines

ABE - LHR

$553 Find cheap flights from Allentown to London Heathrow Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Allentown to London departing on 9/19. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
sáb. 6/29
sáb. 7/6

Search hundreds of travel sites at once for deals on flights to London Heathrow Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Allentown to London, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Allentown to London, as well as popular online travel agencies
In the last 7 days travelers have searched 42,686,544 times on KAYAK, and here is why:

Save 21% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Bundle and saveSave money when you bundle your flight + hotel.

Cheap flight deals from Allentown to London (ABE-LHR)

 
These are the cheapest deals for flights from Allentown to London currently on KAYAK along with options from the most popular airlines KAYAK users selected for this route. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent round-trip flight deals from Allentown to London

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from Allentown to London.

Recent one-way flight deals from Allentown to London

Only flying one-way? Below are some of the best one-way flight deals from Allentown to London found on KAYAK recently.

Recent last minute flight deals from Allentown to London

Leaving soon but still want a bargain? Check out these latest deals for last minute flights from Allentown to London.

Recent direct flight deals from Allentown to London

The latest deals for direct flights from Allentown to London so you can sit back and relax without the need for a layover.

Cheap bus & train deals from Allentown to London

Find recent round-trip train or bus tickets from Allentown to London.

All round-trip flight deals to London

The cheapest plane tickets to London found on KAYAK recently.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
5:40 pm - 11:45 amABE-LHR
13h 05m1 stop
6:50 am - 4:58 pmLHR-ABE
15h 08m2 stops
$657United Airlines
Find Deal
mar., ago. 20 - mar., ago. 27
5:51 pm - 1:15 pmABE-LHR
14h 24m1 stop
12:45 pm - 11:09 pmLHR-ABE
15h 24m1 stop
$666Delta
Find Deal
dom., ago. 18 - mar., ago. 27
5:51 pm - 1:15 pmABE-LHR
14h 24m1 stop
9:20 am - 11:09 pmLHR-ABE
18h 49m2 stops
$671Delta
Find Deal
dom., ago. 18 - mar., ago. 27
5:40 pm - 1:15 pmABE-LHR
14h 35m1 stop
1:55 pm - 11:26 pmLHR-ABE
14h 31m1 stop
$716Delta
Find Deal
dom., sep. 15 - lun., sep. 23
5:51 pm - 11:10 amABE-LHR
12h 19m1 stop
1:55 pm - 11:09 pmLHR-ABE
14h 14m1 stop
$726Delta
Find Deal
lun., ago. 19 - mié., ago. 28
7:51 pm - 12:10 pmABE-LHR
11h 19m1 stop
9:15 am - 10:28 pmLHR-ABE
18h 13m1 stop
$894American Airlines
Find Deal
mié., jul. 3 - mié., jul. 10
6:40 am - 5:55 amABE-LHR
18h 15m1 stop
8:30 am - 9:38 pmLHR-ABE
18h 08m1 stop
$997United Airlines
Find Deal
jue., jun. 20 - dom., jun. 30
12:22 pm - 7:40 amABE-LHR
14h 18m1 stop
9:55 am - 10:28 pmLHR-ABE
17h 33m2 stops
$1,099American Airlines
Find Deal
mié., jul. 3 - mié., jul. 10
12:22 pm - 7:40 amABE-LHR
14h 18m1 stop
9:55 am - 7:12 pmLHR-ABE
14h 17m2 stops
$1,149American Airlines
Find Deal
mié., jun. 26 - sáb., jul. 20
6:10 am - 7:40 amABE-LHR
20h 30m1 stop
12:30 pm - 11:33 amLHR-ABE
28h 03m2 stops
$1,162American Airlines
Find Deal
mié., jun. 26 - lun., jul. 8
6:30 am - 5:55 amABE-LHR
18h 25m1 stop
$553United Airlines
Find Deal
jue., sep. 19
6:40 am - 5:55 amABE-LHR
18h 15m1 stop
$617United Airlines
Find Deal
mié., jun. 5
6:40 am - 7:15 amABE-LHR
19h 35m2 stops
$621United Airlines
Find Deal
lun., jul. 1
5:40 pm - 9:00 amABE-LHR
34h 20m1 stop
$629United Airlines
Find Deal
lun., jul. 1
5:51 pm - 11:10 amABE-LHR
12h 19m1 stop
$887Delta
Find Deal
mar., jul. 9
12:27 pm - 7:50 amABE-LHR
14h 23m1 stop
$942Delta
Find Deal
vie., jun. 28
12:27 pm - 6:45 amABE-LHR
13h 18m2 stops
$1,237Delta
Find Deal
vie., jun. 28
5:49 pm - 11:10 amABE-LHR
12h 21m1 stop
$2,107Delta
Find Deal
dom., jun. 16
5:34 pm - 11:45 amABE-LHR
13h 11m1 stop
6:50 am - 4:58 pmLHR-ABE
15h 08m2 stops
$1,329United Airlines
Find Deal
mar., jun. 4 - mié., jun. 12
5:34 pm - 11:45 amABE-LHR
13h 11m1 stop
1:05 pm - 9:37 pmLHR-ABE
13h 32m1 stop
$1,338United Airlines
Find Deal
mar., jun. 4 - mié., jun. 12
12:24 pm - 7:50 amABE-LHR
14h 26m1 stop
1:55 pm - 11:14 pmLHR-ABE
14h 19m1 stop
$2,213Delta
Find Deal
mar., jun. 4 - dom., jun. 9
12:24 pm - 11:10 amABE-LHR
17h 46m1 stop
11:30 am - 11:14 pmLHR-ABE
16h 44m2 stops
$2,776Delta
Find Deal
lun., jun. 3 - sáb., jun. 8
12:24 pm - 7:50 amABE-LHR
14h 26m1 stop
1:55 pm - 11:14 pmLHR-ABE
14h 19m1 stop
$2,783Delta
Find Deal
lun., jun. 3 - sáb., jun. 8

Flights from Allentown to London - Travel Insights & Trends

Get data-powered insights and trends into flights from Allentown to London to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Allentown to London Heathrow Airport?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 72 hours, the best return deals on flights connecting Allentown to London Heathrow Airport were found on United Airlines ($657) and Delta ($666). United Airlines proposed the cheapest one-way flight at $553.

Good to know

Cheapest flight

$553
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
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Allentown to London Heathrow Airport flights

  • What is the cheapest flight from Allentown to London Heathrow Airport?

    In the last 3 days, the lowest price for a flight from Allentown to London Heathrow Airport was $553 for a one-way ticket and $657 for a round-trip.

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

    Yes, you'll most likely have to show a valid passport before boarding the plane in Allentown and on arrival in London Heathrow Airport.

  • Which airports will I be using when flying from Allentown to London Heathrow Airport?

    Allentown and London Heathrow Airport are both served by 1 main airport. You will leave Allentown from Allentown-Bethlehem and will be arriving at London Heathrow.

  • Which aircraft models fly most regularly from Allentown to London Heathrow Airport?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Allentown to London Heathrow Airport?

    Star Alliance, SkyTeam, and oneworld are the airline alliances operating flights between Allentown and London Heathrow Airport, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Allentown to London, United Airlines or American Airlines?

    The two airlines most popular with KAYAK users for flights from Allentown to London are United Airlines and American Airlines. With an average price for the route of $839 and an overall rating of 7.4, United Airlines is the most popular choice. American Airlines is also a great choice for the route, with an average price of $1,075 and an overall rating of 7.3.

  • How does KAYAK find such low prices on flights from Allentown to London Heathrow Airport?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Allentown to London Heathrow Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Allentown to London Heathrow Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London Heathrow Airport from Allentown is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Allentown to London Heathrow Airport?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to London Heathrow Airport with an airline and back to Allentown with another airline. Booking your flights between Allentown and LHR can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Allentown to London Heathrow Airport?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London Heathrow Airport from Allentown up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top airlines flying from Allentown to London

 
See real verified KAYAK customer reviews for airlines flying from Allentown to London. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Allentown to London? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 10777 reviews
7.2Comfort
8.1Crew
7.7Boarding
7.1Entertainment
6.7Food
Airline reviews

The flight and boarding were easy peasy. I was traveling with my 4-year-old, so a smooth boarding experience was especially appreciated. My only piece of feedback is really about where our gate was in O'Hare. They've shoved four gates into a tiny corner of the B terminal and there isn't early enough room or seating for everyone. Not United's problem, but did dent the overall experience.

10.0 ExcellentEllen, May 2024GSP - ORD
Read more about United Airlines reviews

The flight and boarding were easy peasy. I was traveling with my 4-year-old, so a smooth boarding experience was especially appreciated. My only piece of feedback is really about where our gate was in O'Hare. They've shoved four gates into a tiny corner of the B terminal and there isn't early enough room or seating for everyone. Not United's problem, but did dent the overall experience.

We liked the fully reclinable seats. Had center seats, so it was difficult to talk to spouse. Crew was great

Aisle chair was good and liked the foot bar preventing you from putting your foot in the isle, The breakfast on this international flight to Zurich was horrible (Europeans, specially, used to good food) may make this a dealbreaker for booking with United Airlines again. I agreed with my Spanish fellow passenger.

Dinner was okay but the breakfast was not eatable on the flight San Francisco to Zurich.

There was no screens on board AND the WiFi didn’t work. My seat was broken and couldn’t recline so I couldn’t even sleep. The flight attendants didn’t offer anything to make it more comfortable. It was such an old cramped plane, when the person in front of me reclined I couldn’t even open my tray table. All the United ads talk about guaranteeing everyone gets a screen!

The Wi-Fi was unavailable on this flight for some reason.

The flight was delayed almost 2 hours. Bad customer service etc. I will never fly Luthansa. Ever!!!

On time take off…US cabins look tired and need of refresh!

Fine. Though no food or entertainment so the survey needs to be updated with those options.

Backpack should NOT allowed put in the flight bin , only put it under the seat. I can't find space put my carry on luggage!!! and I pay for it ! that was very bad experience

The boarding process and flight were great. However, I waited about 40 minutes for my luggage. It did not come up on the designated belt. Instead, everyone’s bags were on a cart. Not sure what the issue was, but we were not informed until another passenger went looking for her bags and found them.

So uncomfortable to sit in the tiny space on a long, international. Food was rough. Please, less white flour and processed food.

Our flight was delayed 2.5 hrs due to plane being too hot! After 1.5 hrs, airline decided to use another plane but had to wait for gate, baggage transfer & beverage transfer. Anyone could tell after first half hour that another plane was required and although did not affect us many would miss connecting flights at Heathrow. I have found the stewards are not the friendliest in the industry and the food is questionable, even as I like airplane food normally, the best of the 2 flights was the yogurt & granola for breakfast.

Terrible boarding , Business class seats are sub standard. As usual crew will miss your food too

Just get Economy Plus for international flights, so worth it the extra room, bigger seats…

The return trip was a customer service disaster. American Airlines needs an overhaul of how they treat their customers.

Was flying in premium eco and there were around 5-6 movies I wanted to watch and none of those could I play for some reasons. Not just me we checked w the person sitting next to me. Few of the movies were only playable :( Also that was not great that we couldn't upgrade to business however tried to, many times before the flight :(

You cancelled my flight by email then made it very difficult to get in contact with you. Then put me in a flight with a long layover in Mexico returning to the wrong airport in uk. Mind blowing my stressful. I missed see my grand dad because of you.

This was not the BA business class it used to be. Mediocre food, attendants seemed stretched thin. All the little luxuries that used to make BA business fun were missing. Flight delayed and the explanation given was they forgot to pick up crew - I hope I misheard! Transfer in LHR “sticky” - we thought we had way too much time at 3hours but it was needed. Next time will try different route.

Always getting updates by email very easy to check in on line. There was plenty of checking in staff to get you all through. It was nice that the flight attendants took time to talk to you and were interested in your holiday.

Book cheap flights from Allentown to London

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Allentown to London found on KAYAK in the last 72 hours.
9/19jue.
1 stopUnited Airlines
18h 25mABE-LHR
$553
6/5mié.
1 stopUnited Airlines
18h 15mABE-LHR
$617
7/1lun.
2 stopsUnited Airlines
19h 35mABE-LHR
$621
7/1lun.
1 stopUnited Airlines
34h 20mABE-LHR
$629
7/9mar.
1 stopDelta
12h 19mABE-LHR
$887
6/28vie.
1 stopDelta
14h 23mABE-LHR
$942
6/28vie.
2 stopsDelta
13h 18mABE-LHR
$1,237
6/16dom.
1 stopDelta
12h 21mABE-LHR
$2,107

Search by stops

Search by airline

Search by price

Last minute flights from Allentown to London

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Allentown to London that are departing in the next 10 days.
6/4mar.
multi-stopUnited Airlines
13h 11mABE-LHR
6/12mié.
multi-stopUnited Airlines
15h 08mLHR-ABE
$1,329
6/4mar.
multi-stopUnited Airlines
13h 11mABE-LHR
6/12mié.
multi-stopUnited Airlines
13h 32mLHR-ABE
$1,338
6/4mar.
multi-stopDelta
14h 26mABE-LHR
6/9dom.
multi-stopDelta
14h 19mLHR-ABE
$2,213
6/3lun.
multi-stopDelta
17h 46mABE-LHR
6/8sáb.
multi-stopDelta
16h 44mLHR-ABE
$2,776
6/3lun.
multi-stopDelta
14h 26mABE-LHR
6/8sáb.
multi-stopDelta
14h 19mLHR-ABE
$2,783

Search by stops

Search by airline

Search by price

Allentown - London Heathrow Airport Flights

Departure:

Allentown (ABE)United States

Destination:

London Heathrow Airport (LHR)United Kingdom

Return flight deals:

London Heathrow Airport - Allentown

Cabin classes: