Cheap Flights to New Castle County | Popular Routes to New Castle County from HK$464

View HK$464 flight on Sun, 1 Feb 2026Opens in a new window

Popular airlines to New Castle County

  • American Airlines

    American Airlines

  • Delta

    Delta

  • United

    United

  • Frontier Airlines

    Frontier Airlines

  • Southwest Airlines

    Southwest Airlines

  • Spirit Airlines

    Spirit Airlines

  • JetBlue Airways

    JetBlue Airways

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Cheap round-trip flights to New Castle County

Prices were available within the past 7 days and start at HK$464 for one-way flights and HK$918 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sun, 1 Feb - Mon, 2 Feb
BOS
Boston
PHL
Philadelphia
HK$918 Return, found 4 days ago
HK$918
Return
found 4 days ago
Select Delta flight, departing Sun, 1 Feb from Boston to Philadelphia, returning Mon, 2 Feb, priced at HK$918 found 4 days ago
Delta
Sun, 1 Feb - Mon, 2 Feb
BOS
Boston
PHL
Philadelphia
HK$1,068 Return, found 4 days ago
HK$1,068
Return
found 4 days ago
Select Delta flight, departing Sun, 1 Feb from Boston to Philadelphia, returning Mon, 2 Feb, priced at HK$1,068 found 4 days ago
Delta
Sun, 1 Feb - Mon, 2 Feb
BOS
Boston
PHL
Philadelphia
HK$1,305 Return, found 4 days ago
HK$1,305
Return
found 4 days ago
Select Delta flight, departing Sun, 1 Feb from Boston to Philadelphia, returning Mon, 2 Feb, priced at HK$1,305 found 4 days ago
United
Sun, 1 Feb - Mon, 2 Feb
BOS
Boston
PHL
Philadelphia
HK$1,693 Return, found 4 days ago
HK$1,693
Return
found 4 days ago
Select United flight, departing Sun, 1 Feb from Boston to Philadelphia, returning Mon, 2 Feb, priced at HK$1,693 found 4 days ago
American Airlines
Fri, 1 May - Fri, 1 May
BOS
Boston
PHL
Philadelphia
HK$1,971 Return, found 21 hours ago
HK$1,971
Return
found 21 hours ago
Select American Airlines flight, departing Fri, 1 May from Boston to Philadelphia, returning Fri, 1 May, priced at HK$1,971 found 21 hours ago
China Airlines
Mon, 2 Feb - Wed, 18 Feb
HKG
Hong Kong SAR
PHL
Philadelphia
HK$6,456 Return, found 22 hours ago
HK$6,456
Return
found 22 hours ago
Select China Airlines flight, departing Mon, 2 Feb from Hong Kong SAR to Philadelphia, returning Wed, 18 Feb, priced at HK$6,456 found 22 hours ago
American Airlines
Tue, 28 Jul - Tue, 11 Aug
MXP
Milan
PHL
Philadelphia
HK$7,224 Return, found 20 hours ago
HK$7,224
Return
found 20 hours ago
Select American Airlines flight, departing Tue, 28 Jul from Milan to Philadelphia, returning Tue, 11 Aug, priced at HK$7,224 found 20 hours ago
STARLUX Airlines
Mon, 25 May - Mon, 1 Jun
HKG
Hong Kong SAR
PHL
Philadelphia
HK$7,703 Return, found 1 day ago
HK$7,703
Return
found 1 day ago
Select STARLUX Airlines flight, departing Mon, 25 May from Hong Kong SAR to Philadelphia, returning Mon, 1 Jun, priced at HK$7,703 found 1 day ago
Air Canada
Tue, 28 Jul - Tue, 11 Aug
MXP
Milan
PHL
Philadelphia
HK$7,738 Return, found 20 hours ago
HK$7,738
Return
found 20 hours ago
Select Air Canada flight, departing Tue, 28 Jul from Milan to Philadelphia, returning Tue, 11 Aug, priced at HK$7,738 found 20 hours ago
Lufthansa
Tue, 28 Jul - Tue, 11 Aug
MXP
Milan
PHL
Philadelphia
HK$7,789 Return, found 20 hours ago
HK$7,789
Return
found 20 hours ago
Select Lufthansa flight, departing Tue, 28 Jul from Milan to Philadelphia, returning Tue, 11 Aug, priced at HK$7,789 found 20 hours ago

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.

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, HK$918 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 HK$918 and reached a maximum of HK$7,789. For one-way journeys departing from Boston (BOS), the lowest price during this time was just HK$464.
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 HK$918 and HK$7,789. 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.

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.

China Airlines
Mon, 2 Feb - Wed, 18 Feb
HKG
Hong Kong SAR
PHL
Philadelphia
HK$6,456 Return, found 22 hours ago
HK$6,456
Return
found 22 hours ago
Select China Airlines flight, departing Mon, 2 Feb from Hong Kong SAR to Philadelphia, returning Wed, 18 Feb, priced at HK$6,456 found 22 hours ago
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