Find flights
Deals
Insights
When to book
FAQs & Tips
Airlines

ABE - LHR

Find cheap flights from Allentown to London Heathrow Airport from $463

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 7/16. 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
Tue 6/11
Tue 6/18

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 42,369,914 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)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Allentown to London that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
1:00 pm - 1:15 pmABE-LHR
19h 15m1 stop
11:35 am - 11:26 pmLHR-ABE
16h 51m1 stop
$758Delta
Find Deal
Mon, Sep 30 - Tue, Oct 8
1:00 pm - 7:50 amABE-LHR
13h 50m1 stop
6:15 am - 11:26 pmLHR-ABE
22h 11m2 stops
$777Delta
Find Deal
Mon, Sep 30 - Tue, Oct 8
5:34 pm - 11:45 amABE-LHR
13h 11m1 stop
1:05 pm - 9:37 pmLHR-ABE
13h 32m1 stop
$956United Airlines
Find Deal
Sat, May 25 - Sat, Jun 1
5:34 pm - 11:45 amABE-LHR
13h 11m1 stop
6:50 am - 4:58 pmLHR-ABE
15h 08m2 stops
$961United Airlines
Find Deal
Sat, May 25 - Sat, Jun 1
7:51 pm - 12:10 pmABE-LHR
11h 19m1 stop
12:15 pm - 7:21 pmLHR-ABE
12h 06m1 stop
$1,012American Airlines
Find Deal
Mon, Jun 10 - Mon, Jun 17
7:51 pm - 12:10 pmABE-LHR
11h 19m1 stop
3:15 pm - 10:28 pmLHR-ABE
12h 13m1 stop
$1,053American Airlines
Find Deal
Wed, Jul 3 - Wed, Jul 10
3:00 pm - 1:15 pmABE-LHR
17h 15m1 stop
11:35 am - 11:09 pmLHR-ABE
16h 34m1 stop
$1,108Virgin Atlantic
Find Deal
Fri, Jul 5 - Tue, Jul 9
3:00 pm - 1:15 pmABE-LHR
17h 15m1 stop
6:15 am - 11:09 pmLHR-ABE
21h 54m2 stops
$1,415Virgin Atlantic
Find Deal
Fri, Jul 5 - Tue, Jul 9
5:34 pm - 3:45 pmABE-LHR
17h 11m2 stops
6:00 am - 4:58 pmLHR-ABE
15h 58m2 stops
$1,751
Find Deal
Sat, May 25 - Sat, Jun 1
5:32 pm - 3:45 pmABE-LHR
17h 13m2 stops
8:40 am - 8:43 pmLHR-ABE
17h 03m2 stops
$2,081
Find Deal
Thu, Sep 26 - Wed, Oct 2

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 Delta ($758) and United Airlines ($956). United Airlines proposed the cheapest one-way flight at $463.

Good to know

Cheapest flight

$463
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 $463 for a one-way ticket and $758 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 $1,063 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 10981 reviews
7.2Comfort
8.1Crew
7.1Entertainment
7.7Boarding
6.7Food
Airline reviews

Energetic crew - flight full of swiftied going to Taylor's opening show in Paris! Long lines for bathroom made out kind of suck though

8.0 ExcellentSusan, May 2024ORD - CDG
Read more about United Airlines reviews

Energetic crew - flight full of swiftied going to Taylor's opening show in Paris! Long lines for bathroom made out kind of suck though

Check in etc was very good. As for on the plane, it was like flying in a freezer. It was so cold, i have flown for years and never been so cold on a plane. Staff on board said its always cold when flying which is a load of rubbish. They wouldnt put any heating on and now i have the flu because of this .

I’ve had a couple flights this week on United that were delayed by an hour or more

Flight was delayed 2.5 hours - a big deal on an overnight when you plan to sleep.

I feel like they have upgraded the app since I last flew United and I found it to be super helpful. I had stopped flying United unless absolutely necessary and my experience on this trip indicates they have been working hard to improve their services.

Surprisingly easy! I was hesitant to try this, but the cost swayed me. I actually felt like I had less stress than all the taxiing and possible delays that occur with short regional flights where you spend less time in the air than getting to and from the plane..

This flight was delayed multiple times and eventually canceled around 2-3ish. Original take off time was around 10:30am. By 3, there were no other options out of Houston, so stuck in Houston for from 3pm - 11am the next day.

Should have video screens Plane audio was poor and without wired connection hard to understand crew. Should serve more than just cups of water and pretzels on six hour flight. Did not see crew rest of flight. Fix charging sockets to retain charging blocks.

I paid $380 for my one-way ticket from California to Minnesota. The fair did not include online check-in. I received instructions from their app to check in at a kiosk. At the kiosk, the boarding pass would not print until an actual person came to verify that I had a personal item and not a carry-on item, On the plane, the person next to me was drunk and allowed to continue to order alcohol. United is garbage I’d rather fly spirit.

The plane was dirty and the in seat air wasn't blowing as planes usually do.

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.

Flight from Phoenix to London was very quiet. Excellent space available for comfort, couldn't fault

Food was very average. And top up drinks offer was absent. For a 11 hour long flight that should be the minimum. The crew didn't want to be there. I understand it was new year day but given they had signed up for it

It was my fault choosing the seat nearest the entrance but it was ok.

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.
7/16Tue
1 stopUnited Airlines
18h 15mABE-LHR
$463
10/30Wed
1 stopDelta
12h 25mABE-LHR
$587
10/31Thu
1 stopDelta
12h 25mABE-LHR
$637
11/3Sun
1 stopDelta
11h 25mABE-LHR
$687
11/1Fri
1 stopDelta
12h 25mABE-LHR
$737
6/4Tue
1 stopAmerican Airlines
11h 17mABE-LHR
$881

Search by stops

Search by airline

Search by price

Allentown - London Heathrow Airport Flights

Departure:

Allentown (undefined)United States

Destination:

London Heathrow Airport (LHR)United Kingdom

Return flight deals:

London Heathrow Airport - Allentown

Cabin classes: