A cityscape with a river, industrial buildings, and a mix of modern and older architecture.

Cheap flights to New Castle County

View €87 flight on Sun, 19 Jul 2026Opens in a new window

Popular airlines to New Castle County

  • Frontier Airlines

  • American Airlines

  • Delta

  • United

  • JetBlue Airways

  • Southwest Airlines

  • 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 €87 for one-way flights and €172 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Thu, 16 Jul - Sun, 19 Jul
BOS
Boston
PHL
Philadelphia
€172 Return, found 1 hour ago
€172
Return
found 1 hour ago
Select American Airlines flight, departing Thu, 16 Jul from Boston to Philadelphia, returning Sun, 19 Jul, priced at €172 found 1 hour ago
Delta
Thu, 16 Jul - Sun, 19 Jul
BOS
Boston
PHL
Philadelphia
€172 Return, found 1 hour ago
€172
Return
found 1 hour ago
Select Delta flight, departing Thu, 16 Jul from Boston to Philadelphia, returning Sun, 19 Jul, priced at €172 found 1 hour ago
JetBlue Airways
Fri, 14 Aug - Fri, 21 Aug
BOS
Boston
PHL
Philadelphia
€172 Return, found 1 day ago
€172
Return
found 1 day ago
Select JetBlue Airways flight, departing Fri, 14 Aug from Boston to Philadelphia, returning Fri, 21 Aug, priced at €172 found 1 day ago
JetBlue Airways
Sun, 23 Aug - Wed, 26 Aug
BOS
Boston
PHL
Philadelphia
€173 Return, found 2 days ago
€173
Return
found 2 days ago
Select JetBlue Airways flight, departing Sun, 23 Aug from Boston to Philadelphia, returning Wed, 26 Aug, priced at €173 found 2 days ago
JetBlue Airways
Sun, 23 Aug - Wed, 26 Aug
BOS
Boston
PHL
Philadelphia
€183 Return, found 2 days ago
€183
Return
found 2 days ago
Select JetBlue Airways flight, departing Sun, 23 Aug from Boston to Philadelphia, returning Wed, 26 Aug, priced at €183 found 2 days ago
Delta
Thu, 22 Oct - Mon, 26 Oct
BOS
Boston
PHL
Philadelphia
€187 Return, found 1 day ago
€187
Return
found 1 day ago
Select Delta flight, departing Thu, 22 Oct from Boston to Philadelphia, returning Mon, 26 Oct, priced at €187 found 1 day ago
Delta
Fri, 25 Sept - Mon, 28 Sept
BOS
Boston
PHL
Philadelphia
€188 Return, found 2 days ago
€188
Return
found 2 days ago
Select Delta flight, departing Fri, 25 Sept from Boston to Philadelphia, returning Mon, 28 Sept, priced at €188 found 2 days ago
JetBlue Airways
Thu, 9 Jul - Sun, 12 Jul
BOS
Boston
PHL
Philadelphia
€194 Return, found 6 days ago
€194
Return
found 6 days ago
Select JetBlue Airways flight, departing Thu, 9 Jul from Boston to Philadelphia, returning Sun, 12 Jul, priced at €194 found 6 days ago
United
Sat, 11 Jul - Wed, 15 Jul
BOS
Boston
PHL
Philadelphia
€218 Return, found 6 days ago
€218
Return
found 6 days ago
Select United flight, departing Sat, 11 Jul from Boston to Philadelphia, returning Wed, 15 Jul, priced at €218 found 6 days ago
Finnair
Thu, 25 Mar - Sat, 10 Apr
DUB
Dublin
PHL
Philadelphia
€505 Return, found 1 day ago
€505
Return
found 1 day ago
Select Finnair flight, departing Thu, 25 Mar from Dublin to Philadelphia, returning Sat, 10 Apr, priced at €505 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
Thu, 27 Aug - Sun, 30 Aug
DUB
Dublin
PHL
Philadelphia
€477 Return, found 6 days ago
€477
Return
found 6 days ago
Select JetBlue Airways flight, departing Thu, 27 Aug from Dublin to Philadelphia, returning Sun, 30 Aug, priced at €477 found 6 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, €172 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 €172 and reached a maximum of €505. For one-way journeys departing from Boston (BOS), the lowest price during this time was just €87.
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 €172 and €505. 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.

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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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