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

Cheap Flights to New Castle County from $19

View $19 flight on Wed, Oct 28, 2026Opens in a new window

Flight 1

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Popular airlines to New Castle County

  • Frontier Airlines

  • American Airlines

  • United

  • Delta

  • JetBlue Airways

  • Southwest Airlines

  • Alaska Airlines

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How much is the cheapest flight to New Castle County?

Prices were available within the past 7 days and start at $19 for one-way flights and $38 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Frontier Airlines
Frontier Airlines
Frontier Airlines
Frontier Airlines
Frontier Airlines
Delta
Avelo Airlines
American Airlines
JetBlue Airways

Trending flights to New Castle County

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

Frontier Airlines

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Enjoy extra legroom, flight flexibility, and a seamless travel experience.

Travel information

*Flight schedules are subject to change.

*Available to One Key members.

*Flight schedules are subject to change.

*Available to One Key members.

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