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

Cheap Flights to New Castle County from ₩168,800

View ₩168,800 flight on Wed, Aug 12, 2026Opens in a new window

Popular airlines to New Castle County

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  • American Airlines

  • Delta

  • United

  • 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 ₩168,800 for one-way flights and ₩300,900 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, Aug 1 - Mon, Aug 3
BOS
Boston
PHL
Philadelphia
₩300,900 Roundtrip, found 2 days ago
₩300,900
Roundtrip
found 2 days ago
Select Delta flight, departing Sat, Aug 1 from Boston to Philadelphia, returning Mon, Aug 3, priced at ₩300,900 found 2 days ago
Delta
Tue, Jul 14 - Tue, Jul 21
BOS
Boston
PHL
Philadelphia
₩301,100 Roundtrip, found 3 days ago
₩301,100
Roundtrip
found 3 days ago
Select Delta flight, departing Tue, Jul 14 from Boston to Philadelphia, returning Tue, Jul 21, priced at ₩301,100 found 3 days ago
Delta
Fri, Jul 31 - Mon, Aug 3
BOS
Boston
PHL
Philadelphia
₩302,300 Roundtrip, found 7 hours ago
₩302,300
Roundtrip
found 7 hours ago
Select Delta flight, departing Fri, Jul 31 from Boston to Philadelphia, returning Mon, Aug 3, priced at ₩302,300 found 7 hours ago
Delta
Sat, Aug 1 - Mon, Aug 3
BOS
Boston
PHL
Philadelphia
₩350,400 Roundtrip, found 2 days ago
₩350,400
Roundtrip
found 2 days ago
Select Delta flight, departing Sat, Aug 1 from Boston to Philadelphia, returning Mon, Aug 3, priced at ₩350,400 found 2 days ago
Delta
Sun, Jul 19 - Tue, Aug 4
BOS
Boston
PHL
Philadelphia
₩350,600 Roundtrip, found 3 days ago
₩350,600
Roundtrip
found 3 days ago
Select Delta flight, departing Sun, Jul 19 from Boston to Philadelphia, returning Tue, Aug 4, priced at ₩350,600 found 3 days ago
Delta
Fri, Jul 31 - Mon, Aug 3
BOS
Boston
PHL
Philadelphia
₩351,800 Roundtrip, found 7 hours ago
₩351,800
Roundtrip
found 7 hours ago
Select Delta flight, departing Fri, Jul 31 from Boston to Philadelphia, returning Mon, Aug 3, priced at ₩351,800 found 7 hours ago
American Airlines
Sat, Aug 1 - Mon, Aug 3
BOS
Boston
PHL
Philadelphia
₩408,900 Roundtrip, found 2 days ago
₩408,900
Roundtrip
found 2 days ago
Select American Airlines flight, departing Sat, Aug 1 from Boston to Philadelphia, returning Mon, Aug 3, priced at ₩408,900 found 2 days ago
United
Fri, Sep 4 - Sun, Sep 6
BOS
Boston
PHL
Philadelphia
₩437,700 Roundtrip, found 3 days ago
₩437,700
Roundtrip
found 3 days ago
Select United flight, departing Fri, Sep 4 from Boston to Philadelphia, returning Sun, Sep 6, priced at ₩437,700 found 3 days ago
Air Canada
Thu, Oct 1 - Thu, Oct 29
ICN
Seoul
PHL
Philadelphia
₩1,558,700 Roundtrip, found 1 day ago
₩1,558,700
Roundtrip
found 1 day ago
Select Air Canada flight, departing Thu, Oct 1 from Seoul to Philadelphia, returning Thu, Oct 29, priced at ₩1,558,700 found 1 day ago
Qatar Airways
Wed, Oct 28 - Wed, Nov 4
ICN
Seoul
PHL
Philadelphia
₩1,961,100 Roundtrip, found 3 days ago
₩1,961,100
Roundtrip
found 3 days ago
Select Qatar Airways flight, departing Wed, Oct 28 from Seoul to Philadelphia, returning Wed, Nov 4, priced at ₩1,961,100 found 3 days ago

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.

Air Canada
Thu, Oct 1 - Thu, Oct 29
ICN
Seoul
PHL
Philadelphia
₩1,558,700 Roundtrip, found 1 day ago
₩1,558,700
Roundtrip
found 1 day ago
Select Air Canada flight, departing Thu, Oct 1 from Seoul to Philadelphia, returning Thu, Oct 29, priced at ₩1,558,700 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, ₩300,900 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 ₩300,900 and reached a maximum of ₩1,961,100. For one-way journeys departing from Boston (BOS), the lowest price during this time was just ₩168,800.
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 ₩300,900 and ₩1,961,100. 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 65ºF and 80ºF.
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 traveler'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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