Cheap Flights to New Castle County | Popular Routes to New Castle County from HK$1,297

View HK$1,297 flight on Tue, 12 May 2026Opens in a new window

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Popular airlines to New Castle County

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Cheap round-trip flights to New Castle County

Prices were available within the past 7 days and start at HK$1,297 for one-way flights and HK$2,894 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Thu, 23 Jul - Mon, 27 Jul
SFO
San Francisco
PHL
Philadelphia
HK$2,894 Return, found 3 days ago
HK$2,894
Return
found 3 days ago
Select Delta flight, departing Thu, 23 Jul from San Francisco to Philadelphia, returning Mon, 27 Jul, priced at HK$2,894 found 3 days ago
Delta
Thu, 23 Jul - Mon, 27 Jul
SFO
San Francisco
PHL
Philadelphia
HK$3,249 Return, found 3 days ago
HK$3,249
Return
found 3 days ago
Select Delta flight, departing Thu, 23 Jul from San Francisco to Philadelphia, returning Mon, 27 Jul, priced at HK$3,249 found 3 days ago
Delta
Thu, 23 Jul - Mon, 27 Jul
SFO
San Francisco
PHL
Philadelphia
HK$3,561 Return, found 3 days ago
HK$3,561
Return
found 3 days ago
Select Delta flight, departing Thu, 23 Jul from San Francisco to Philadelphia, returning Mon, 27 Jul, priced at HK$3,561 found 3 days ago
American Airlines
Thu, 23 Jul - Mon, 27 Jul
SFO
San Francisco
PHL
Philadelphia
HK$3,598 Return, found 3 days ago
HK$3,598
Return
found 3 days ago
Select American Airlines flight, departing Thu, 23 Jul from San Francisco to Philadelphia, returning Mon, 27 Jul, priced at HK$3,598 found 3 days ago
United
Thu, 23 Jul - Mon, 27 Jul
SFO
San Francisco
PHL
Philadelphia
HK$3,640 Return, found 3 days ago
HK$3,640
Return
found 3 days ago
Select United flight, departing Thu, 23 Jul from San Francisco to Philadelphia, returning Mon, 27 Jul, priced at HK$3,640 found 3 days ago
United
Sat, 11 Jul - Fri, 24 Jul
SFO
San Francisco
PHL
Philadelphia
HK$3,676 Return, found 5 days ago
HK$3,676
Return
found 5 days ago
Select United flight, departing Sat, 11 Jul from San Francisco to Philadelphia, returning Fri, 24 Jul, priced at HK$3,676 found 5 days ago
United
Thu, 23 Jul - Mon, 27 Jul
SFO
San Francisco
PHL
Philadelphia
HK$3,718 Return, found 3 days ago
HK$3,718
Return
found 3 days ago
Select United flight, departing Thu, 23 Jul from San Francisco to Philadelphia, returning Mon, 27 Jul, priced at HK$3,718 found 3 days ago
American Airlines
Thu, 23 Jul - Mon, 27 Jul
SFO
San Francisco
PHL
Philadelphia
HK$3,921 Return, found 3 days ago
HK$3,921
Return
found 3 days ago
Select American Airlines flight, departing Thu, 23 Jul from San Francisco to Philadelphia, returning Mon, 27 Jul, priced at HK$3,921 found 3 days ago
Air Canada
Wed, 17 Jun - Fri, 17 Jul
HKG
Hong Kong SAR
PHL
Philadelphia
HK$10,054 Return, found 3 days ago
HK$10,054
Return
found 3 days ago
Select Air Canada flight, departing Wed, 17 Jun from Hong Kong SAR to Philadelphia, returning Fri, 17 Jul, priced at HK$10,054 found 3 days ago
STARLUX Airlines
Sat, 23 May - Sun, 24 May
HKG
Hong Kong SAR
PHL
Philadelphia
HK$11,394 Return, found 3 days ago
HK$11,394
Return
found 3 days ago
Select STARLUX Airlines flight, departing Sat, 23 May from Hong Kong SAR to Philadelphia, returning Sun, 24 May, priced at HK$11,394 found 3 days 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.

Delta
Wed, 17 Jun - Fri, 17 Jul
HKG
Hong Kong SAR
PHL
Philadelphia
HK$7,690 Return, found 3 days ago
HK$7,690
Return
found 3 days ago
Select Delta flight, departing Wed, 17 Jun from Hong Kong SAR to Philadelphia, returning Fri, 17 Jul, priced at HK$7,690 found 3 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, HK$2,894 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$2,894 and reached a maximum of HK$11,394. For one-way journeys departing from San Francisco (SFO), the lowest price during this time was just HK$1,297.
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$2,894 and HK$11,394. 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

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About New Castle County

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