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Cheap flights from the United Kingdom to Delaware from £266

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 14/1. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — ILG
16 Nov — 23 Nov1
1 adult
1 adult, Economy

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 17 October 2025.

Fri 7/1107:45MAN - PHL
1 stop13h 15mMultiple Airlines
Mon 10/1117:30PHL - MAN
1 stop11h 00mMultiple Airlines
Deal found 16/10£371
Mon 24/1108:30MAN - PHL
1 stop12h 30mMultiple Airlines
Mon 8/1217:30PHL - MAN
1 stop11h 00mMultiple Airlines
Deal found 16/10£404
Mon 1/1207:55EDI - PHL
1 stop13h 05mMultiple Airlines
Mon 8/1217:30PHL - EDI
1 stop9h 45mMultiple Airlines
Deal found 17/10£421
Wed 12/1113:25LHR - PHL
1 stop30h 22mAir Canada
Wed 19/1109:20PHL - LHR
2 stops30h 15mAir Canada
Deal found 15/10£440
Mon 17/1113:25LHR - PHL
1 stop30h 22mAir Canada
Mon 24/1109:20PHL - LHR
2 stops30h 15mAir Canada
Deal found 15/10£441
Thu 13/1109:20LHR - PHL
1 stop11h 37mJetBlue
Mon 17/1106:00PHL - LHR
1 stop19h 55mJetBlue
Deal found 16/10£442
Mon 17/1113:25LHR - PHL
2 stops38h 21mAir Canada
Tue 25/1115:30PHL - LHR
1 stop10h 40mAir Canada
Deal found 15/10£442
Wed 12/1115:30LHR - PHL
1 stop29h 35mUnited Airlines
Wed 19/1109:20PHL - LHR
2 stops19h 00mUnited Airlines
Deal found 15/10£444
Thu 13/1114:00LGW - PHL
1 stop14h 53mMultiple Airlines
Mon 17/1113:57PHL - LGW
1 stop15h 03mMultiple Airlines
Deal found 16/10£444
Wed 31/1213:30LHR - PHL
1 stop31h 35mUnited Airlines
Thu 15/109:20PHL - LHR
2 stops30h 15mUnited Airlines
Deal found 14/10£445
Mon 24/1109:00LGW - PHL
1 stop12h 00mMultiple Airlines
Mon 1/1217:30PHL - LGW
2 stops19h 20mMultiple Airlines
Deal found 16/10£447
Tue 25/1106:30LHR - PHL
1 stop14h 35mUnited Airlines
Sun 30/1116:35PHL - LHR
2 stops23h 00mUnited Airlines
Deal found 16/10£449

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 17 October 2025.

Round-trip from

£371

One-way from

£266

Popular in

August

Cheapest in

February

Average price

£546
Aer Lingus
  • Aer Lingus
  • 7/11-10/11
  • 2 total stops
  • 24h 15m total
  • United Kingdom to Delaware
Search Deals
14/1
  • 14/1
  • 2 total stops
  • 34h 31m total
  • United Kingdom to Delaware
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (£24 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£9 potential savings vs. average return price).
Search Deals
Average for round-trip flights in October 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 17 October 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

EdinburghPhiladelphia

EDI - PHL

EDIPHL

Edinburgh Turnhouse

Mon 1/12

07:55-16:00

1 stop13h 05m

Philadelphia

Mon 8/12

17:30-08:15

1 stop9h 45m

£421

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Tue 25/11

06:30-16:05

1 stop14h 35m

Philadelphia

Sun 30/11

16:35-20:35

2 stops23h 00m

£449

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Thu 19/3

08:30-17:05

1 stop12h 35m

Philadelphia

Tue 24/3

09:20-20:35

2 stops31h 15m

£466

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Thu 5/3

09:20-18:31

1 stop14h 11m

Philadelphia

Mon 9/3

16:48-06:55

1 stop10h 07m

£472

LondonPhiladelphia

LTN - PHL

LTNPHL

London Luton

Mon 15/12

08:50-16:00

1 stop12h 10m

Philadelphia

Tue 30/12

17:30-09:45

1 stop11h 15m

£475

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Sat 15/11

09:20-15:57

1 stop11h 37m

Philadelphia

Mon 1/12

10:40-06:55

1 stop15h 15m

£478

LondonPhiladelphia

LGW - PHL

LGWPHL

London Gatwick

Wed 3/12

19:25-17:17

2 stops50h 52m

Philadelphia

Sun 7/12

22:00-10:00

1 stop31h 00m

£483

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 5/1

09:00-15:49

2 stops35h 49m

Philadelphia

Tue 27/1

15:30-09:45

2 stops13h 15m

£485

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Sun 1/2

12:00-15:49

2 stops32h 49m

Philadelphia

Mon 16/2

15:05-06:40

1 stop10h 35m

£487

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Wed 3/12

12:00-15:49

2 stops32h 49m

Philadelphia

Thu 18/12

15:30-07:10

1 stop10h 40m

£498

Flights are sorted by cheapest return flights first.

Deals found on 15/10

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 United Airlines, JetBlue, and Aer Lingus fly from United Kingdom to Delaware in about 12h 40m. The time it takes to get you to your destination can typically vary by up to 1h 55m. The distance from United Kingdom to Delaware is about 3297 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 Delta (£365), British Airways (£365), and TAP AIR PORTUGAL (£368).

  • 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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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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