Cheap flights to New Castle County

View €321 flight on Tue, 16 Jun 2026Opens in a new window

Popular airlines to New Castle County

  • Frontier Airlines

  • American Airlines

  • Delta

  • United

  • Southwest Airlines

  • JetBlue Airways

  • Alaska Airlines

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Cheap round-trip flights to New Castle County

Prices were available within the past 7 days and start at €321 for one-way flights and €453 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Finnair
Fri, 22 May - Thu, 28 May
DUB
Dublin
PHL
Philadelphia
€453 Return, found 1 day ago
€453
Return
found 1 day ago
Select Finnair flight, departing Fri, 22 May from Dublin to Philadelphia, returning Thu, 28 May, priced at €453 found 1 day ago
Finnair
Sun, 24 May - Sun, 31 May
DUB
Dublin
PHL
Philadelphia
€453 Return, just found
€453
Return
just found
Select Finnair flight, departing Sun, 24 May from Dublin to Philadelphia, returning Sun, 31 May, priced at €453 just found
Finnair
Tue, 9 Jun - Tue, 23 Jun
DUB
Dublin
PHL
Philadelphia
€454 Return, found 2 hours ago
€454
Return
found 2 hours ago
Select Finnair flight, departing Tue, 9 Jun from Dublin to Philadelphia, returning Tue, 23 Jun, priced at €454 found 2 hours ago
JetBlue Airways
Tue, 7 Jul - Wed, 15 Jul
DUB
Dublin
PHL
Philadelphia
€455 Return, found 5 days ago
€455
Return
found 5 days ago
Select JetBlue Airways flight, departing Tue, 7 Jul from Dublin to Philadelphia, returning Wed, 15 Jul, priced at €455 found 5 days ago
KLM
Thu, 18 Jun - Tue, 30 Jun
DUB
Dublin
PHL
Philadelphia
€461 Return, found 5 days ago
€461
Return
found 5 days ago
Select KLM flight, departing Thu, 18 Jun from Dublin to Philadelphia, returning Tue, 30 Jun, priced at €461 found 5 days ago
Aer Lingus
Thu, 4 Jun - Sun, 14 Jun
DUB
Dublin
PHL
Philadelphia
€465 Return, found 4 days ago
€465
Return
found 4 days ago
Select Aer Lingus flight, departing Thu, 4 Jun from Dublin to Philadelphia, returning Sun, 14 Jun, priced at €465 found 4 days ago
American Airlines
Fri, 22 May - Thu, 28 May
DUB
Dublin
PHL
Philadelphia
€465 Return, found 1 day ago
€465
Return
found 1 day ago
Select American Airlines flight, departing Fri, 22 May from Dublin to Philadelphia, returning Thu, 28 May, priced at €465 found 1 day ago
Iberia
Sun, 24 May - Sun, 31 May
DUB
Dublin
PHL
Philadelphia
€465 Return, just found
€465
Return
just found
Select Iberia flight, departing Sun, 24 May from Dublin to Philadelphia, returning Sun, 31 May, priced at €465 just found
Air France
Thu, 18 Jun - Tue, 30 Jun
DUB
Dublin
PHL
Philadelphia
€466 Return, found 5 days ago
€466
Return
found 5 days ago
Select Air France flight, departing Thu, 18 Jun from Dublin to Philadelphia, returning Tue, 30 Jun, priced at €466 found 5 days ago
British Airways
Tue, 23 Jun - Sun, 28 Jun
DUB
Dublin
PHL
Philadelphia
€482 Return, found 2 days ago
€482
Return
found 2 days ago
Select British Airways flight, departing Tue, 23 Jun from Dublin to Philadelphia, returning Sun, 28 Jun, priced at €482 found 2 days 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.

Finnair
Fri, 22 May - Thu, 28 May
DUB
Dublin
PHL
Philadelphia
€453 Return, found 1 day ago
€453
Return
found 1 day ago
Select Finnair flight, departing Fri, 22 May from Dublin to Philadelphia, returning Thu, 28 May, priced at €453 found 1 day 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, €453 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 €453 and reached a maximum of €594. For one-way journeys departing from Dublin (DUB), the lowest price during this time was just €321.
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.
How much is a plane ticket to New Castle County?
In the last seven days, airfares to New Castle County fluctuated between €453 and €594. 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

About New Castle County

Expedia offers flights to New Castle County to meet every traveller's needs. Whatever your flight need - Expedia has the flight for you. So choose from flights to New Castle County or destinations around the world and discover how easy it is to make your flight reservations on Expedia.
About New Castle County
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