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 Sat, Oct 31, 2026Opens in a new window

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
Allegiant Air
Allegiant Air
Frontier Airlines
Avelo Airlines
American Airlines
Southwest Airlines

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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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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