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Cheap flights from the United Kingdom to Delaware from £273

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/2. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — ILG
5 Dec — 12 Dec1
1 adult
1 adult, Economy, 0 bags

Find flight deals from United Kingdom to Delaware

Enter your travel dates to find the best prices.

Cheapest flights from United Kingdom to Delaware
Explore the most affordable flight options available from United Kingdom to Delaware. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 5 November 2025.

Fri 5/1214:00LGW - PHL
2 stops26h 17mMultiple Airlines
Fri 12/1205:15PHL - LGW
2 stops23h 45mMultiple Airlines
Deal found 3/11£461
Fri 14/1114:00LGW - PHL
1 stop16h 24mMultiple Airlines
Sun 7/1222:00PHL - LGW
2 stops27h 00mMultiple Airlines
Deal found 2/11£462
Mon 17/1114:00LGW - PHL
1 stop29h 17mMultiple Airlines
Sun 23/1106:00PHL - LGW
2 stops23h 55mMultiple Airlines
Deal found 3/11£464
Tue 18/1107:25LHR - PHL
2 stops37h 32mIcelandair
Thu 27/1106:00PHL - LHR
1 stop19h 55mIcelandair
Deal found 3/11£467
Fri 21/1114:00LGW - PHL
1 stop22h 32mMultiple Airlines
Mon 24/1106:00PHL - LGW
2 stops23h 55mMultiple Airlines
Deal found 1/11£468
Fri 28/1109:20LHR - PHL
1 stop11h 35mIcelandair
Wed 3/1216:32PHL - LHR
1 stop9h 23mIcelandair
Deal found 3/11£476
Wed 3/1206:35LHR - PHL
2 stops21h 11mUnited Airlines
Wed 10/1216:35PHL - LHR
2 stops23h 00mUnited Airlines
Deal found 3/11£478
Sat 6/1214:00LGW - PHL
2 stops39h 36mMultiple Airlines
Fri 12/1205:30PHL - LGW
1 stop23h 30mMultiple Airlines
Deal found 4/11£478
Mon 24/1109:20LHR - PHL
1 stop13h 22mJetBlue
Mon 12/113:30PHL - LHR
1 stop12h 25mJetBlue
Deal found 3/11£480
Mon 17/1109:00LHR - PHL
2 stops18h 46mAir Canada
Sun 23/1109:20PHL - LHR
2 stops30h 15mAir Canada
Deal found 3/11£484
Mon 24/1109:20LHR - PHL
1 stop13h 22mJetBlue
Fri 5/1216:32PHL - LHR
1 stop9h 23mJetBlue
Deal found 3/11£485
Wed 26/1109:20LHR - PHL
1 stop27h 15mJetBlue
Thu 4/1216:32PHL - LHR
1 stop9h 23mJetBlue
Deal found 3/11£487

Cheap flight deals from United Kingdom to Delaware

Keep the following information in mind while searching for United Kingdom to Delaware flight deals. Data was last updated 5 November 2025.

Round-trip from

£460

One-way from

£273

Popular in

December

Cheapest in

February

Average price

£555
JetBlue
  • JetBlue
  • 9/2-15/2
  • 2 total stops
  • 33h 58m total
  • United Kingdom to Delaware
Search Deals
1/2
  • 1/2
  • 2 total stops
  • 33h 47m total
  • United Kingdom to Delaware
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (£18 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£9 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from United Kingdom to Delaware 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, Cheapflights users made 858,174 searches. Data last updated 5 November 2025.
Use the filters below to find and compare flights from the United Kingdom to Delaware that are best for you.

Fly from

United Kingdom

Fly to

Delaware

Route

Depart

Return

Price

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Thu 15/1

09:20-18:23

1 stop14h 03m

Philadelphia

Sun 18/1

08:40-06:55

1 stop17h 15m

£477

LondonPhiladelphia

LGW - PHL

LGWPHL

London Gatwick

Sat 17/1

14:00-08:36

1 stop23h 36m

Philadelphia

Sat 24/1

13:32-10:05

1 stop15h 33m

£483

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Wed 11/3

06:30-14:55

1 stop12h 25m

Philadelphia

Mon 23/3

19:35-06:35

Nonstop7h 00m

£490

LondonPhiladelphia

LGW - PHL

LGWPHL

London Gatwick

Mon 8/12

14:00-18:55

1 stop33h 55m

Philadelphia

Mon 15/12

05:30-10:00

1 stop23h 30m

£496

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 8/12

09:00-22:46

2 stops18h 46m

Philadelphia

Mon 15/12

15:30-07:10

1 stop10h 40m

£498

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Sat 6/12

09:20-09:39

1 stop29h 19m

Philadelphia

Tue 16/12

16:32-06:55

1 stop9h 23m

£511

BirminghamPhiladelphia

BHX - PHL

BHXPHL

Birmingham

Sat 22/11

08:15-16:00

1 stop12h 45m

Philadelphia

Tue 2/12

17:30-08:40

1 stop10h 10m

£525

EdinburghPhiladelphia

EDI - PHL

EDIPHL

Edinburgh Turnhouse

Tue 2/12

08:20-16:00

1 stop12h 40m

Philadelphia

Tue 9/12

17:30-08:50

1 stop10h 20m

£526

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Thu 5/3

09:00-22:46

2 stops18h 46m

Philadelphia

Mon 9/3

15:30-07:10

1 stop11h 40m

£532

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 8/12

12:15-14:44

3 stops31h 29m

Philadelphia

Mon 15/12

05:30-10:50

2 stops24h 20m

£535

Flights are sorted by cheapest return flights first.

Deals found on 3/11

Showing 1-10 of 60 results
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Best time to book a flight from United Kingdom to Delaware

Have a flexible travel schedule? Discover the best time to fly to Delaware from United Kingdom with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from the United Kingdom to Delaware
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from United Kingdom to Delaware. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from United Kingdom to Delaware?

    Airlines like JetBlue, British Airways, and Air Canada fly from United Kingdom to Delaware in about 12h 25m. The time it takes to get you to your destination can typically vary by up to 6h 21m. The distance from United Kingdom to Delaware is about 3533 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the cheapest airlines to fly from United Kingdom to Delaware one-way?

    The cheapet airlines for a one-way flight from United Kingdom to Delaware are British Airways (£377), United Airlines (£377), and Delta (£378).

  • Can I find deals for flights from United Kingdom to Delaware that include hotel bookings?

    Yes. In addition to deals on United Kingdom to Delaware flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from United Kingdom to Delaware?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from United Kingdom to Delaware.

  • Can I find deals for business class flights from United Kingdom to Delaware?

    Yes. Cheapflights offers flight deals from United Kingdom to Delaware by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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Alternative routes for United Kingdom to Delaware

See prices for flight routes from nearby airports that may be better suited for you.
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How does Cheapflights help users find flights from United Kingdom to Delaware?

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It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from United Kingdom to Delaware.

Can Cheapflights find flights from United Kingdom to Delaware with no change fees?

Need flexible booking options for your flight to Delaware from United Kingdom? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from United Kingdom to Delaware become cheaper?

Yes! Start tracking prices for United Kingdom to Delaware flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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