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Find cheap flights from London to Delaware from £227

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from London to Delaware departing on 22/5. 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
Fri 7/6
Fri 14/6

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Cheapest return prices found by our users on KAYAK in the last 72 hours

Philadelphia
Philadelphia1 stop£420

Good to know - Cheap tickets from London to Delaware

Low season

January

High season

August

Cheapest flight

£227
Best time to beat the crowds (11% less expensive on average)
Most popular time to fly (23% more expensive on average)
Flight from London Heathrow Airport to Philadelphia

FAQs - booking Delaware flights

  • How does KAYAK find such low prices on flights from London to Delaware?

    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 London to Delaware.

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

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

  • What is the Hacker Fare option on flights from London to Delaware?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Delaware with an airline and back to London with another airline.

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

    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 Delaware from London 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 a cheap flight from London to Delaware

  • Morning departure is around 9% more expensive 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 5 airlines serving from London to Delaware

 
Need help choosing which airline to fly with from London to Delaware? 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.
7.8
China SouthernOverall score based on 282 reviews
8.3Crew
7.8Comfort
8.0Boarding
7.5Entertainment
7.3Food
Airline reviews

We bought the business class tickets. The check-in staff and onboard crew were excellent, providing commendable service throughout. However, it was disappointing to find that China Southern Airlines does not have a lounge at SFO. Instead, passengers were provided with a $35 per person food voucher, which fell short of expectations. Furthermore, the quality of the onboard food left much to be desired, marking a significant decline compared to our previous flight experience in 2019, prior to the pandemic.

6.0 GoodMichelle, Apr 2024SFO - CAN
Read more about China Southern reviews

We bought the business class tickets. The check-in staff and onboard crew were excellent, providing commendable service throughout. However, it was disappointing to find that China Southern Airlines does not have a lounge at SFO. Instead, passengers were provided with a $35 per person food voucher, which fell short of expectations. Furthermore, the quality of the onboard food left much to be desired, marking a significant decline compared to our previous flight experience in 2019, prior to the pandemic.

Wuhan - Dubai. Old plane: 1. Only USB charger. No power outlet to plug in.. 2. Super narrow seat layout 3. Toilet cover consistently fell down and hit my back when sitting on it.. :( 4. Entertainment system touch screen not sensitive, and need to press hard or use finger tips to hit. Crew were very nice and accommodating though.

1. I got very poor check in experience with the counter lady . This is the first airline I ever experienced that no combine check in weight allow . Even we have 4 of us but weight counter by piece . So we wasted lot of time argue and repack . This is super crazy 2. Next I left my Samsung tablet on the plane . And I started to escalate and finally spoke to southern airline lost and found in Malaysia and the amazing answer she give is : system nothing found and please try to call southern airline in china 🧐 . I have been flying many other airlines but this is my first encounterment with such irresponsible airline response and no empathy given to customer . My feeling is nobody bother whether how customer like me feel and I’m just too small for the management to take note .

No red vine, no whiskey, no vodka. No that I wanted all of them at once but still...

During flight, some passengers perform stomping leg exercises which disturb the comfort (I.e. sleep) of other passengers.

No good but was short flight. Both of our China Southern flights were on time. No surprises.

The flight was okay it was the kayak customer service that was poor, I have been trying to change my name on my flight ticket 3 days before my flight and nothing got done about it even tho I messaged so many times and phoned, all I got in return was that is was being processed and still to this day nothing has been done about it, I think it’s disgusting and un needed stress to the trip.

The food was perfect. The boarding process is a bit long. Given the late boarding time, I felt very tired by the time I was seated.

Quality flight from start to finish. Customer service is evidently very important to this company. The staff really exceeded expectations.

Traveling with the Chinese airlines , their service superior to the US Airlines , they are much more friendly and the seats are comfortable , In the past I flew with United , now ,United Airline will become history for me .

Very comfortable Prem economy seats for a long haul flight. Had a problem with the tv that the crew fixed so was great!

Not good. Flight was purchased for my father who needed medical assistance to board and transfer due to a heart condition. No one at Hong Kong from Cathay was there to assist and he barely made the connection. When I talked to him he could barely breath and was not sure he was going to make it. Really poor service even though the ticket stated he needed a wheelchair assistance.

we were upgraded which was a blessing and tender mercy for us. I fell the day before and was in extreme pain from knee to shoulder. Sitting in a more comfortable seat during the flight was an unexpected blessing and experience.

Very poor check-in experience, and flight meal service was very disappointing with no drinks service or hot meal.

Flight crew was especially thoughtful and attentive, made sure our seats were comfortable so we could rest on the long flight

The coffee in Premium economy and economy is terrible. That's it. Everything else is great

Very comfortable flights. Not so many new releases in terms of films.

Lounge in pukhet not good Very nice new aircraft Super crew as nearly always with Cathay

I felt thirsty and asked the flight attendent for water, but no one came for more than half an hour.

The crew were fine. I didn’t enjoy the food at all. I found it unappetising and really had trouble eating it. The comfort level was fine and our return flight is with Cathay Pacific but honestly I probably wouldn’t fly Cathay Pacific again.

On the flight back the seats where very uncomfortable, they where so bad that my back started to hurt after the first 2 hours. I can sit in a wooden chair for 2 hours. But these where just horrible, it just shows how cheap the airline has become. And the cabin was heated all those people in a heated cabin during a night flight. It was clear the climate control was not working. To top that off you are not even offered a glass of water, these people are animals.

We purchased a Go First Pass for 10 Euros each so we could board first, but everyone was able to board at the same time so we wasted 20 Euros. The flight left ab out 15 minutes late and was not allowed to land at Healthrow so we had to circle Heathrow for about 45 minutes. This caused us to almost miss our flight from Heathrow to Atlanta.

Severely delayed with no notice. Could have arrived at the airport hours later had we been informed of the delay

Once the boarding sign went on and all passengers gathered in line, we were left waiting standing up for almost an hour because there was a delay.

It would be nice to have vegan options for meals. The entertainment was not working on the the way to Austria. It was only available near the end of flight to Canada. The service was excellent.

Flight was delayed by approx 1 hour. The boarding process and the flight itself were very good, slightly tight squeeze for my legs but overall happy.

The business class layout on this plane is tightly packed and atrocious with no sense of privacy.

Flight was meant to leave at 8:30pm but there was a 2 hour delay 😞

Airmalta does not include meals in their flights and neither offers entertainment.

Pros: "The crew was amazing and took measures to make the flight Covid safe"
Cons: "The food was not the best and Twistees weren't available. Also the seats felt narrow"

The flight was delayed for almost 5 hours, but I understand that it was not up to the company, however how they could handle the situation better, they never apologized for that delay, moreover despite passengers being there for 7 hours only thing they did was to give a bowl of instant noodles, afterwards on the plane tiny snacks, people were there starting from lunch time and we’ve arrived to destination at almost midnight

Flight was delayed for 2 hours for no reason, then we spent almost an hour after boarding because of the weather conditions. If we left on time we could avoid that 😾

Cons: "Everything was great. Very nice and friendly crew, clean plane, great food. Excellent overall"
Pros: "Because of our delay, we flew with Air Thai instead of Air China....much better airline"
Pros: "The crew was accommodating during the flight but spoke very little English and could not help with information on connecting flight."
Cons: "We missed our connecting flight due to a delay and the airline would not let us through because we could have made our second flight...."
Pros: "The price"
Cons: "Staff was not helpful and kind of rude unless you spoke their language. Food options were terrible and not very comfortable seat for 13+ hr flight."
Pros: "The food was good. It was nice that they supply wet hot towels before each meal. The seat was comfortable with the price I paid for. The rest room is nice and clean and quite spacious. The L’occitane toiletery bag was nice."
Cons: "It would be nice to supply mouthwash in the rest room. It would be nice to have a foot step at the bottom to open the trash container. The comforter is not washed and smells."
Cons: "Seats are narrow, leg room limited, and food is minimal."
Cons: "Seats are narrow, leg room poor, and food service is minimal."
Pros: "The crew was okay. The seating was great on all except for one leg."
Cons: "On one leg, it must have been an older plane, because the business class seats barely reclined."

my original flight was cancelled the previous day, and i was rescheduled onto this flight, which left much earlier in the morning, impacting my previous evening and requiring me to get up much earlier in the morning to get to the airport online. This practice happens way way way too much, and it seems on every airline, though AA is probably the worst.

The crew was very attentive and kept busy serving a variety of treats!

Offered vegetable curry when it was actually tofu which I don’t care for.

The flight was good the crew excellent…but take off delayed three hours!!!

Both mine and my husband's chairs were broken. Also it took 2 hours to get our bags after our flight which was wild.

perhaps eye contact with the cabin crew, instead of abruptness and an impatience to serve.

Not enough trash pickups throughout the flight. Everything else was great.

Overall good, the gluten free food is very hit/miss though and you must tell them you have an allergy days in advance.

All was good. The headphones they supply are of poor quality. The food is good but too much dairy.

Seating space was crowded and I am a very small woman.

Book cheap flights from London to Delaware

Cheapest flights to Delaware from London found in 2024

Recent return flight deals

16/9Mon
1 stopAmerican Airlines
13h 40mLHR-PHL
23/9Mon
1 stopAmerican Airlines
11h 40mPHL-LHR
£420
4/6Tue
direct
7h 45mLHR-PHL
11/6Tue
1 stop
12h 30mPHL-LHR
£436
10/9Tue
2 stopsAir Canada
13h 41mLHR-PHL
24/9Tue
1 stopAir Canada
12h 50mPHL-LHR
£446
10/9Tue
1 stopFinnair
20h 35mLHR-PHL
24/9Tue
1 stopFinnair
11h 40mPHL-LHR
£448
10/9Tue
directFinnair
7h 55mLHR-PHL
24/9Tue
directFinnair
7h 10mPHL-LHR
£463
10/9Tue
directBritish Airways
7h 55mLHR-PHL
24/9Tue
directBritish Airways
7h 05mPHL-LHR
£464
16/9Mon
directBritish Airways
7h 55mLHR-PHL
23/9Mon
directBritish Airways
7h 10mPHL-LHR
£478
19/5Sun
1 stopAir France
15h 54mLHR-PHL
28/5Tue
1 stopAir France
14h 18mPHL-LHR
£597
1/7Mon
2 stopsSWISS
26h 23mLHR-PHL
15/7Mon
2 stopsSWISS
15h 25mPHL-LHR
£649
17/6Mon
2 stopsSWISS
14h 00mLHR-PHL
28/6Fri
2 stopsSWISS
15h 25mPHL-LHR
£692

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22/5Wed
2 stops
46h 16mLHR-PHL
£227
6/6Thu
3 stops
39h 36mLHR-PHL
£247
17/9Tue
1 stopFinnair
14h 35mLHR-PHL
£503
17/9Tue
directFinnair
7h 55mLHR-PHL
£517
1/10Tue
2 stopsBritish Airways
22h 44mLHR-PHL
£518
3/6Mon
directIberia
7h 55mLHR-PHL
£539
14/5Tue
directIberia
7h 45mLHR-PHL
£542
24/5Fri
1 stopJetBlue
12h 10mLHR-PHL
£560
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2 stopsBritish Airways
18h 33mLHR-PHL
£562
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1 stopJetBlue
16h 28mLHR-PHL
£583

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Last minute flights from London to Delaware

Last minute flight, train and bus deals

12/5Sun
multi-stopFinnair
29h 25mLHR-PHL
4/6Tue
multi-stopFinnair
11h 39mPHL-LHR
£546
12/5Sun
directFinnair
7h 45mLHR-PHL
4/6Tue
multi-stopFinnair
11h 39mPHL-LHR
£549
12/5Sun
directFinnair
7h 45mLHR-PHL
2/6Sun
multi-stopFinnair
31h 55mPHL-LHR
£554
9/5Thu
multi-stopJetBlue
12h 10mLHR-PHL
25/9Wed
multi-stopJetBlue
11h 05mPHL-LHR
£697
11/5Sat
multi-stopJetBlue
16h 28mLHR-PHL
18/5Sat
multi-stopJetBlue
9h 09mPHL-LHR
£735
8/5Wed
multi-stopAmerican Airlines
11h 55mLHR-PHL
12/5Sun
multi-stopAmerican Airlines
31h 55mPHL-LHR
£756
8/5Wed
directAmerican Airlines
7h 45mLHR-PHL
12/5Sun
multi-stopAmerican Airlines
31h 55mPHL-LHR
£772
8/5Wed
directBritish Airways
7h 45mLHR-PHL
25/9Wed
directBritish Airways
7h 00mPHL-LHR
£816
9/5Thu
directBritish Airways
7h 45mLHR-PHL
25/9Wed
directBritish Airways
7h 05mPHL-LHR
£845
12/5Sun
multi-stopDelta
18h 07mLHR-PHL
4/6Tue
multi-stopDelta
13h 03mPHL-LHR
£898

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London - Delaware Flights

Departure:

London (LHR)United Kingdom

Cabin classes: