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Find cheap flights from Allentown to the United Kingdom from $553

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 the United Kingdom 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
Sat 6/29
Sat 7/6

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Best United Kingdom Flight Deals

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

London
London1 stop$657
Edinburgh
Edinburgh2 stops$1,017

Good to know

Cheapest flight

$553
Flight from Allentown to London Heathrow Airport

FAQs - booking United Kingdom flights

  • How does KAYAK find such low prices on flights from Allentown to the United Kingdom?

    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 the United Kingdom.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to the United Kingdom 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 the United Kingdom?

    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 the United Kingdom with an airline and back to Allentown with another airline.

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

    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 the United Kingdom 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 tips for finding cheap flights to the United Kingdom

  • Morning departure is around 64% cheaper than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

Top airlines flying from Allentown to the United Kingdom

 
Need help choosing which airline to fly with from Allentown to the United Kingdom? 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
7.7Boarding
7.2Comfort
8.1Crew
6.7Food
7.1Entertainment
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.

There were delays on both ends. It made it less than excellent. This plane was great though

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

Attendants were rude. Scowling. Seats were miserable and we paid extra.

Tray table was filthy when I sat down. I needed to have someone come clean it because there was food and stains on it WiFi didn’t work after paying for in flight WiFi Food was terrible and was not filling at all Chicken was rubbery Flight attendant had an attitude, interrupted me and wasn’t able to answer basic questions about the food selection such as “does the chicken have red sauce in it”. If your flight attendants are not going to know what is in the meals so we can make an educated decision based on dietary restrictions, they shouldn’t be on the plane. My 1.5 year old niece was sleeping and dropped her binkie. I went on the ground under the chairs looking for it. It was at that time that she came up to me as I’m CLEARLY on all 4s with a flashlight and said “I need to get by”. I said one moment please I’m getting something from under the seat (while my head was literally under the seat). Her reply was “no you need to move now” and proceeded to almost push me out of the way. I looked up and all I saw was her toes under my eyes. When I looked in front of me, her private parts were inches away from my face. I then made a comment “you couldn’t waited 2 seconds?” and her response was, “no I need to use the bathroom”. I understand that and would never want to be the reason someone couldn’t get to the bathroom but I was under the seat. She could’ve gone around the other way instead of harassing me, basically placing her private parts on my head and borderline pushing me out of the way. You don’t pay (especially this much) for this deplorable experience. This was by far the worst experience I have ever had on American. I will be absolutely thinking twice and thrice about flying American Airlines again. I would rather pay more to fly delta because at least I know their WiFi will work and their flight attendants won’t have a terrible attitude for no reason, nor will they act the way this woman did. Unacceptable.

Great crew. Very comfortable business seats with nice bedding. Good food. We were delayed to let late passengers on the flight, but otherwise great experience.

Not being able to purchase my check in baggage online was a negative.

LATE LATE LATE!!! Plagued by late AA flights on this trip. Such a drag. This one was by far the worst.

It was a good flight. Of course it was full, but it went well.

Same basket of unhealthy prepackaged snacks (junk food) which was depleted by the time it got to my row!!

Book cheap flights from Allentown to the United Kingdom

Recent round-trip flight deals

8/20Tue
1 stopUnited Airlines
13h 05mABE-LHR
8/27Tue
2 stopsUnited Airlines
15h 08mLHR-ABE
$657
8/18Sun
1 stopDelta
14h 24mABE-LHR
8/27Tue
1 stopDelta
15h 24mLHR-ABE
$666
8/18Sun
1 stopDelta
14h 24mABE-LHR
8/27Tue
2 stopsDelta
18h 49mLHR-ABE
$671
9/15Sun
1 stopDelta
14h 35mABE-LHR
9/23Mon
1 stopDelta
14h 31mLHR-ABE
$716
8/19Mon
1 stopDelta
12h 19mABE-LHR
8/28Wed
1 stopDelta
14h 14mLHR-ABE
$726
7/3Wed
1 stopAmerican Airlines
11h 19mABE-LHR
7/10Wed
1 stopAmerican Airlines
18h 13mLHR-ABE
$894
9/6Fri
2 stopsKLM
20h 45mABE-EDI
9/15Sun
2 stopsKLM
22h 26mEDI-ABE
$1,017
7/3Wed
1 stopAmerican Airlines
14h 18mABE-LHR
7/10Wed
2 stopsAmerican Airlines
17h 33mLHR-ABE
$1,099
9/6Fri
1 stopKLM
24h 30mABE-EDI
9/15Sun
2 stopsKLM
22h 26mEDI-ABE
$1,189
9/6Fri
2 stops
38h 10mABE-EDI
9/15Sun
3 stops
18h 46mEDI-ABE
$2,434

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Recent one-way flight deals

9/19Thu
1 stopUnited Airlines
18h 25mABE-LHR
$553
6/5Wed
1 stopUnited Airlines
18h 15mABE-LHR
$617
7/1Mon
2 stopsUnited Airlines
19h 35mABE-LHR
$621
7/1Mon
1 stopUnited Airlines
34h 20mABE-LHR
$629
7/9Tue
1 stopDelta
12h 19mABE-LHR
$887
6/28Fri
1 stopDelta
14h 23mABE-LHR
$942
6/28Fri
2 stopsDelta
13h 18mABE-LHR
$1,237
7/1Mon
2 stopsDelta
13h 48mABE-LCY
$1,238
6/28Fri
2 stopsDelta
13h 48mABE-LCY
$1,433
6/16Sun
1 stopDelta
12h 21mABE-LHR
$2,107

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Last minute flights from Allentown to the United Kingdom

Last minute flight, train and bus deals

6/4Tue
multi-stopUnited Airlines
13h 11mABE-LHR
6/12Wed
multi-stopUnited Airlines
15h 08mLHR-ABE
$1,329
6/4Tue
multi-stopUnited Airlines
13h 11mABE-LHR
6/12Wed
multi-stopUnited Airlines
13h 32mLHR-ABE
$1,338
5/31Fri
multi-stopDelta
18h 11mABE-EDI
6/12Wed
multi-stopDelta
16h 09mEDI-ABE
$1,848
5/31Fri
multi-stopDelta
15h 01mABE-EDI
6/12Wed
multi-stopDelta
16h 09mEDI-ABE
$1,877
6/4Tue
multi-stopDelta
14h 26mABE-LHR
6/9Sun
multi-stopDelta
14h 19mLHR-ABE
$2,213
6/3Mon
multi-stopDelta
17h 46mABE-LHR
6/8Sat
multi-stopDelta
16h 44mLHR-ABE
$2,776
6/3Mon
multi-stopDelta
14h 26mABE-LHR
6/8Sat
multi-stopDelta
14h 19mLHR-ABE
$2,783
5/31Fri
multi-stopDelta
15h 01mABE-EDI
6/12Wed
multi-stopDelta
16h 54mEDI-ABE
$5,533

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Allentown - United Kingdom Flights

Departure:

Allentown (ABE)United States

Return flight deals:

United Kingdom - Allentown

Cabin classes: