Cheap Flights to New Castle County

View AU$1,006 flight on Sun, 25 Jan 2026Opens in a new window

Popular airlines to New Castle County

  • American Airlines

    American Airlines

  • Delta

    Delta

  • United

    United

  • Southwest Airlines

    Southwest Airlines

  • Frontier Airlines

    Frontier Airlines

  • JetBlue Airways

    JetBlue Airways

  • Spirit Airlines

    Spirit Airlines

  • notification illustration

    Be in the know

    Get alerts if flight prices drop or rise*
  • deals illustration

    Book smarter

    Save up to 35% on select hotels after you book a flight*
  • trophy illustration

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheapest Flights to New Castle County

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

Air New Zealand
Thu, 5 Mar - Tue, 10 Mar
MEL
Melbourne
PHL
Philadelphia
AU$1,679 Return, found 5 days ago
AU$1,679
Return
found 5 days ago
Select Air New Zealand flight, departing Thu, 5 Mar from Melbourne to Philadelphia, returning Tue, 10 Mar, priced at AU$1,679 found 5 days ago
Air New Zealand
Wed, 18 Feb - Wed, 25 Feb
BNE
Brisbane
PHL
Philadelphia
AU$1,687 Return, found 1 day ago
AU$1,687
Return
found 1 day ago
Select Air New Zealand flight, departing Wed, 18 Feb from Brisbane to Philadelphia, returning Wed, 25 Feb, priced at AU$1,687 found 1 day ago
Air New Zealand
Wed, 25 Feb - Wed, 4 Mar
SYD
Sydney
PHL
Philadelphia
AU$1,689 Return, found 1 day ago
AU$1,689
Return
found 1 day ago
Select Air New Zealand flight, departing Wed, 25 Feb from Sydney to Philadelphia, returning Wed, 4 Mar, priced at AU$1,689 found 1 day ago
Air New Zealand
Tue, 12 May - Wed, 12 Aug
SYD
Sydney
PHL
Philadelphia
AU$1,691 Return, found 1 day ago
AU$1,691
Return
found 1 day ago
Select Air New Zealand flight, departing Tue, 12 May from Sydney to Philadelphia, returning Wed, 12 Aug, priced at AU$1,691 found 1 day ago
Air New Zealand
Mon, 18 May - Wed, 9 Sept
SYD
Sydney
PHL
Philadelphia
AU$1,691 Return, found 4 days ago
AU$1,691
Return
found 4 days ago
Select Air New Zealand flight, departing Mon, 18 May from Sydney to Philadelphia, returning Wed, 9 Sept, priced at AU$1,691 found 4 days ago
Air New Zealand
Wed, 25 Feb - Wed, 4 Mar
SYD
Sydney
PHL
Philadelphia
AU$1,723 Return, found 1 day ago
AU$1,723
Return
found 1 day ago
Select Air New Zealand flight, departing Wed, 25 Feb from Sydney to Philadelphia, returning Wed, 4 Mar, priced at AU$1,723 found 1 day ago
American Airlines
Wed, 28 Jan - Tue, 10 Feb
BNE
Brisbane
PHL
Philadelphia
AU$1,958 Return, found 5 days ago
AU$1,958
Return
found 5 days ago
Select American Airlines flight, departing Wed, 28 Jan from Brisbane to Philadelphia, returning Tue, 10 Feb, priced at AU$1,958 found 5 days ago
Delta
Fri, 20 Feb - Fri, 27 Feb
BNE
Brisbane
PHL
Philadelphia
AU$1,970 Return, just found
AU$1,970
Return
just found
Select Delta flight, departing Fri, 20 Feb from Brisbane to Philadelphia, returning Fri, 27 Feb, priced at AU$1,970 just found
Air Canada
Tue, 3 Mar - Tue, 10 Mar
SYD
Sydney
PHL
Philadelphia
AU$2,014 Return, found 1 day ago
AU$2,014
Return
found 1 day ago
Select Air Canada flight, departing Tue, 3 Mar from Sydney to Philadelphia, returning Tue, 10 Mar, priced at AU$2,014 found 1 day ago
Singapore Airlines
Sun, 10 May - Sat, 23 May
PER
Perth
PHL
Philadelphia
AU$2,338 Return, found 2 days ago
AU$2,338
Return
found 2 days ago
Select Singapore Airlines flight, departing Sun, 10 May from Perth to Philadelphia, returning Sat, 23 May, priced at AU$2,338 found 2 days ago

New Castle County Flights

When was the last time you embarked on a grand adventure? Whether it was last month or years ago, there’s never been a better time to start planning your next big trip. Book tickets to New Castle County today and get ready to build your travel itinerary, from exploring the area with your family to recharging in the change of scenery. During your stay, visit the must-see attractions, chow down on the local cuisine, and relish in a holiday state of mind. However you decide to spend your upcoming trip, we’re here to make your travel plans easy and affordable.

Book Your New Castle County Airfare

At Expedia.com.au, it’s simple to find cheap flights to New Castle County that won’t cause your wallet to flinch. Browse through our inventory of New Castle County flights and find airfare matching your preferred times and dates. Looking for a red-eye flight or an afternoon departure? Don’t worry, we’ve got you covered. You can even take advantage of our convenient My Scratchpad online feature, which lets you track your search results with ease. No more excuses; book your travel arrangements with us today to make your dream trip a reality.

New Castle County Flights Information

Airlines serving
Air New Zealand, Delta, Air Canada, Cathay Pacific, American Airlines, Singapore Airlines
Roundtrip price
from AU$1,679

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, AU$1,679 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 AU$1,679 and reached a maximum of AU$2,338. For one-way journeys departing from Brisbane (BNE), the lowest price during this time was just AU$1,006.
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 AU$1,679 and AU$2,338. 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.

Air New Zealand
Thu, 5 Mar - Tue, 10 Mar
MEL
Melbourne
PHL
Philadelphia
AU$1,679 Return, found 5 days ago
AU$1,679
Return
found 5 days ago
Select Air New Zealand flight, departing Thu, 5 Mar from Melbourne to Philadelphia, returning Tue, 10 Mar, priced at AU$1,679 found 5 days ago
*Available to Expedia members.