£343 Cheap Flights to New Castle County

View £343 flight on Wed, 13 May 2026Opens in a new window

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  • JetBlue Airways

  • Spirit Airlines

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Cheap round-trip flights to New Castle County

Prices were available within the past 7 days and start at £343 for one-way flights and £509 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

JetBlue Airways
Wed, 6 May - Sat, 9 May
LHR
London
PHL
Philadelphia
£509 Return, found 2 days ago
£509
Return
found 2 days ago
Select JetBlue Airways flight, departing Wed, 6 May from London to Philadelphia, returning Sat, 9 May, priced at £509 found 2 days ago
JetBlue Airways
Thu, 7 May - Sun, 24 May
LHR
London
PHL
Philadelphia
£533 Return, found 1 day ago
£533
Return
found 1 day ago
Select JetBlue Airways flight, departing Thu, 7 May from London to Philadelphia, returning Sun, 24 May, priced at £533 found 1 day ago
Air Canada
Mon, 4 May - Mon, 11 May
LHR
London
PHL
Philadelphia
£601 Return, found 5 hours ago
£601
Return
found 5 hours ago
Select Air Canada flight, departing Mon, 4 May from London to Philadelphia, returning Mon, 11 May, priced at £601 found 5 hours ago
British Airways
Wed, 4 Nov - Tue, 10 Nov
LHR
London
PHL
Philadelphia
£611 Return, found 12 hours ago
£611
Return
found 12 hours ago
Select British Airways flight, departing Wed, 4 Nov from London to Philadelphia, returning Tue, 10 Nov, priced at £611 found 12 hours ago
Aer Lingus
Wed, 29 Apr - Sun, 3 May
LHR
London
PHL
Philadelphia
£613 Return, found 4 hours ago
£613
Return
found 4 hours ago
Select Aer Lingus flight, departing Wed, 29 Apr from London to Philadelphia, returning Sun, 3 May, priced at £613 found 4 hours ago
TAP Portugal
Tue, 22 Sept - Tue, 29 Sept
LHR
London
PHL
Philadelphia
£627 Return, found 13 hours ago
£627
Return
found 13 hours ago
Select TAP Portugal flight, departing Tue, 22 Sept from London to Philadelphia, returning Tue, 29 Sept, priced at £627 found 13 hours ago
Lufthansa
Tue, 1 Sept - Wed, 9 Sept
LHR
London
PHL
Philadelphia
£629 Return, found 9 hours ago
£629
Return
found 9 hours ago
Select Lufthansa flight, departing Tue, 1 Sept from London to Philadelphia, returning Wed, 9 Sept, priced at £629 found 9 hours ago
British Airways
Tue, 3 Nov - Mon, 9 Nov
LCY
London
PHL
Philadelphia
£633 Return, found 1 day ago
£633
Return
found 1 day ago
Select British Airways flight, departing Tue, 3 Nov from London to Philadelphia, returning Mon, 9 Nov, priced at £633 found 1 day ago
Brussels Airlines
Mon, 1 Mar - Mon, 8 Mar
LHR
London
PHL
Philadelphia
£636 Return, found 5 days ago
£636
Return
found 5 days ago
Select Brussels Airlines flight, departing Mon, 1 Mar from London to Philadelphia, returning Mon, 8 Mar, priced at £636 found 5 days ago
Swiss International Air Lines
Tue, 22 Sept - Wed, 30 Sept
LCY
London
PHL
Philadelphia
£639 Return, found 1 day ago
£639
Return
found 1 day ago
Select Swiss International Air Lines flight, departing Tue, 22 Sept from London to Philadelphia, returning Wed, 30 Sept, priced at £639 found 1 day ago

Trending flights to New Castle County

These prices were available within the past 7 days. Prices quoted are per person, return, for the period specified. Prices and availability are subject to change. Additional terms apply.

JetBlue Airways
Wed, 6 May - Sat, 9 May
LHR
London
PHL
Philadelphia
£509 Return, found 2 days ago
£509
Return
found 2 days ago
Select JetBlue Airways flight, departing Wed, 6 May from London to Philadelphia, returning Sat, 9 May, priced at £509 found 2 days ago

Frequently asked questions

How do I find cheap flights to New Castle County that have flexible change policies?
By using our handy "No change fee" filter, that's how. Simply type in your dates and other details, click the "Search" button, then mark the checkbox under the "Flexible change policies" heading (to the left). Expedia makes it easy to find cheap, flexible airfares to New Castle County.
Which airlines fly to New Castle County?
Let Avelo Airlines get you there. This popular carrier provides 34 services a month to Wilmington, DE (ILG-New Castle), a New Castle County gateway.
How can I find cheap tickets to New Castle County?
To get your hands on a great deal to New Castle County, book well in advance. Also use Expedia's "flexible dates" link above your search results. This will display the cheapest prices for similar time frames. In the last seven days, £509 was the best price for a flight to New Castle County.
How much is a flight to New Castle County?
In the last seven days, round-trip flights to New Castle County sold from just £509 and reached a maximum of £639. For one-way journeys departing from London (LHR), the lowest price during this time was just £343.
What are the most popular airports to fly into in New Castle County?
Fly into Wilmington, DE (ILG-New Castle) and sample the best that New Castle County has to offer. As the region's main entry point, about 34 flights touch down here each month.
When is the cheapest time to fly to New Castle County?
Take off for New Castle County early in the week and you'll usually be rewarded with more affordable fares. Tuesday is typically the cheapest day to fly out, with Monday a close second. If you're hoping to avoid the costliest flights, keep clear of Saturdays.
How much is a plane ticket to New Castle County?
In the last seven days, airfares to New Castle County fluctuated between £509 and £639. Prices tend to go up over time, so secure a good deal today.
What is the best time to go to New Castle County?
If you'd like to see New Castle County's leading city when it's really buzzing, set out for Wilmington sometime in May, June and August. Like most locations in the Northern Hemisphere, summertime here begins June 20, with temperatures ranging between 18ºC and 27ºC.
What months are the cheapest to book a flight to New Castle County?
To snap up a great deal to New Castle County, try to book during the month of February when prices are at their cheapest. When do tickets cost the most? In the United States, it's December.

Book with confidence

Top tips for booking flights to New Castle County from UK

Get ready to fly to New Castle County

Prepare your luggage and book your flights to New Castle County with Expedia. We offer a seamless flight booking experience, with a wide range of New Castle County plane tickets to choose from. If you need help finding some of the best deals for cheap flights to New Castle County in 2026, we are always available to assist you. Book your flights to New Castle County today and let the adventure begin!

Find the best tickets to New Castle County

To find some of the best tickets to New Castle County in 2026, use Expedia's powerful search engine to compare dates and the different departure and arrival airports for your trip. Whether you're after direct flights to New Castle County or last-minute flights to New Castle County, you can filter and sort your search results, making it easy to find the ideal flight to New Castle County.

Airlines fly to New Castle County

There are 20 different airlines that fly to New Castle County including some of the most trusted names in the business. To book flights to New Castle County with your favourite airline, take a look at Expedia's flight listings and try out different dates to find some of the best New Castle County plane tickets.

Find the cheapest flights to New Castle County

By booking early you may find some of the best deals for New Castle County flights from the UK, including New Castle County direct flights. You can usually find affordable and cheap flights to New Castle County, whether one-way from £343 or round-trip from £509, with Expedia if you book your trip far enough in advance.

Find the best airports for cheap flights to New Castle County

Try searching for different New Castle County airports with Expedia to find some of the cheapest flights to New Castle County. Flights from London (LHR) to Philadelphia (PHL) usually have the lowest price from £343.

Why book your flights to New Castle County with Expedia

Expedia offers great deals on New Castle County air fares from £343 to cater to every budget. Not only is Expedia one of the top platforms to book flights to New Castle County from the UK, it is also your one-stop shop for booking hotels, car rentals, and more.

 

*Prices and availability are subject to change. Additional terms apply.

Top tips for booking flights to New Castle County from UK

Travel information

New Castle County Flights Information

Airlines serving
JetBlue Airways, Aer Lingus, Lufthansa, British Airways, Air Canada, Brussels Airlines, Swiss International Air Lines, Finnair, Iberia, TAP Portugal
Roundtrip price
from £509
New Castle County Flights Information

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