Cheap Flights to New Castle

View AU$766 flight on Sun, 18 Jan. 2026Opens in a new window

Popular airlines to New Castle

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Cheap Tickets to New Castle

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
Sun, 18 Jan. - Wed, 28 Jan.
SYD
Sydney
EGE
Vail
AU$1,281 Return, found 5 days ago
AU$1,281
Return
found 5 days ago
Select Delta flight, departing Sun, 18 Jan. from Sydney to Vail, returning Wed, 28 Jan., priced at AU$1,281 found 5 days ago
Alaska Airlines
Tue, 21 Oct. - Tue, 28 Oct.
SYD
Sydney
DEN
Denver
AU$1,437 Return, found 1 day ago
AU$1,437
Return
found 1 day ago
Select Alaska Airlines flight, departing Tue, 21 Oct. from Sydney to Denver, returning Tue, 28 Oct., priced at AU$1,437 found 1 day ago
Hawaiian Airlines
Tue, 21 Oct. - Tue, 11 Nov.
SYD
Sydney
DEN
Denver
AU$1,437 Return, found 1 day ago
AU$1,437
Return
found 1 day ago
Select Hawaiian Airlines flight, departing Tue, 21 Oct. from Sydney to Denver, returning Tue, 11 Nov., priced at AU$1,437 found 1 day ago
Air New Zealand
Mon, 15 Sep. - Mon, 22 Sep.
SYD
Sydney
DEN
Denver
AU$1,516 Return, found 1 hour ago
AU$1,516
Return
found 1 hour ago
Select Air New Zealand flight, departing Mon, 15 Sep. from Sydney to Denver, returning Mon, 22 Sep., priced at AU$1,516 found 1 hour ago
American Airlines
Mon, 22 Sep. - Mon, 29 Sep.
SYD
Sydney
DEN
Denver
AU$1,578 Return, just found
AU$1,578
Return
just found
Select American Airlines flight, departing Mon, 22 Sep. from Sydney to Denver, returning Mon, 29 Sep., priced at AU$1,578 just found

Find the cheapest month to fly from Columbus (CMH) to Denver (DEN)

November is typically the cheapest month to fly

From AU$183 - AU$616 per traveller.

Graph displaying average flight prices per month

New Castle Flights

Have the time of your life in New Castle

Flying to New Castle is now easier than ever when you use Expedia to book your trip. We’ve got an extensive catalogue of New Castle flight deals, giving you the greatest number of options to choose from. Whether you prefer to fly on weekdays or weekends, in the morning or at night, a quick search on Expedia.com.au will help you find cheap tickets to New Castle in seconds. We even make it simple for you to stick with a certain airline if you’re trying to rack up frequent flyer points.

Tips for flying and packing light

If it’s been a while since you’ve travelled, you might be due for a refresher when it comes to flying. That’s where our helpful blog, Out There Starts Here, comes in. Wondering whether to pack for fine dining or more casual eats? Or whether you really need to bring a jacket? Written by seasoned travel experts, the articles on our blog provide you with the latest details about certain destinations, so you know just what to expect. Check out some of our recent articles for the smartest ways to see the sights.

Fly for less when you bundle airfare and accommodation

Our already low airfares are even more affordable when you bundle your flights with a stay at one of the hotels in New Castle. By booking all of your travel plans with us, you’ll save time and money, and enjoy the convenience of having all of your arrangements in one place.

Get the power of planning in the palm of your hand

Booking your trip to New Castle, Colorado has never been easier than when you use our mobile app to plan your dream getaway. The Expedia App is available on both Android and iOS, allowing you to reserve flights and hotels at any time of day, no matter what kind of phone you use. You’ll also get exclusive offers, receive flight updates, and can earn extra points. Wherever you are, the Expedia App helps you get where you want to be.

Join the Expedia Rewards Program

If you enjoy the finer things in life, sign up for our rewards program to receive exclusive benefits when you book with us. Expedia Rewards opens the door to member-only deals, +VIP Access hotel benefits, and earning Expedia Rewards points, that you can redeem your way. You’ll also get access to Unreal Deals that could save you the price of a plane ticket to New Castle when bundled with your accommodation.

What are you waiting for?

Expedia.com.au helps you find cheap flights to New Castle AU$1,281. So why wait another second to begin planning your trip? Start your search right now, and you could be boarding the next New Castle-bound flight. Bon voyage!

Frequently asked questions

What is the name of New Castle's airport?
New Castle is served by just one airport, Pitkin County Airport (ASE).
How many airlines fly to New Castle?
There are 19 air carriers that jet into New Castle from 194 airports across the globe.
Which airlines fly to New Castle?
Southwest Airlines, United Airlines and American Airlines are the most frequent fliers to New Castle. The highest number of flights come in from Phoenix, with Southwest Airlines offering the most services on this route.
How many nonstop flights are there to New Castle?
Planning an awesome New Castle getaway is child's play when there are 5 928 direct flights every week to pick from.
Where are the most popular flights to New Castle departing from?
Flights to New Castle from Dallas, Phoenix and Houston airports are the most in demand.
How long is the flight to New Castle Airport?
If it's Phoenix you're departing, you'll be midair for around 1 hour and 39 minutes before you arrive in New Castle. Tarmac to tarmac from Chicago generally takes 2 hours and 43 minutes and from Dallas, it's 2 hours and 14 minutes.
How to book the cheapest flight to New Castle?
If you want to save some cash on your trip to New Castle, listen up! As any experienced traveller will tell you, don't leave booking until the last minute. Fares are usually more expensive just prior to the departure date. Also, shop around and compare your options. If your destination has more than one airport, you may be able to nab a better deal by flying into one that's farther away. Lastly, another easy way to save some cash is be ready to book at a moment's notice. If you spot a terrific deal, don't think twice — grab it while you can.
How to survive the flight to New Castle?
Depending on where you're coming from, your flight to New Castle could be completely painless or it could go on forever. We've rounded up some handy hints that will help you start your next great adventure on a positive note.What to pack in your hand luggage:

  • The trick to having a hassle-free travel experience is to be prepared. First up, the essentials: passport, official ID, bank cards and daily medications. Next, bring on board items that'll help keep you entertained, like some electronic devices or a magazine. It's also smart to bring your chargers, a neck pillow and a pair of earplugs. Last but not least, be sure to pop in toiletries like a toothbrush, facial wipes and a fresh change of clothes.

Do not pack the following items in your hand luggage:

  • While the list of banned items differs between air carriers, the general rule to follow is avoid carrying anything sharp, flammable or explosive. This includes screwdrivers, blades, spray paint and fireworks. Sports equipment like baseball bats, and items that could harm other people, such as swords and guns, are also banned from the cabin.

What to wear on a flight:

  • Your aim here is to feel as comfortable as possible. Don layers of natural fibers and pack a cardigan in case it gets cool in the cabin. Pick a pair of well-fitting, flat shoes as it's possible that your feet and ankles will swell during the journey. Leave the stilettos and chunky boots in your luggage.
  • Unfortunately, a risk of long-haul flights is developing DVT (deep vein thrombosis), a blood clotting condition caused by prolonged periods of inactivity. To prevent this from happening, take every opportunity to wander around the cabin. Compression tights and socks are another simple way to help reduce this risk.

How to get through airport security fast when flying to New Castle?
The answer is — be prepared. We've put together some useful tips for an easy trip through airport security. Watch out New Castle, here you come:

  • Your ID and travel documents will need to be inspected by airport security. Keep them handy so you don't hold up the queue.
  • Time to strip down. Well sort of. Your belt, jacket, keys and other items in your pocket, like your earphones, will need to go through the X-ray machine. Make the whole process faster by removing them before your turn.
  • All your electronic devices, including your laptop and phone, must also be scanned.
  • Remove gels and liquids from your carry-on luggage. They often need to be sent through the X-ray scanner separately. Each product should be in a container no larger than 3.4 ounces (100 milliliters) and everything must fit inside a quart-size (one litre), clear zip-lock bag.
  • Slip-on shoes are a clever footwear choice as you're less likely to be asked to remove them when going through security. Big boots and heavier-style shoes are usually subjected to extra screening.
  • Take all prohibited items out of your carry-on bag. If you have any sharp objects like a pocket knife or tools, put them in your checked baggage. They won't be allowed in the cabin.

Flights to New Castle information
Destination airport
Denver Intl.
Destination airport IATA code
DEN
Destination city name
Denver
Return price
AU$1,804

Trending flights to New Castle

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
Sun, 18 Jan. - Wed, 28 Jan.
SYD
Sydney
EGE
Vail
AU$1,281 Return, found 5 days ago
AU$1,281
Return
found 5 days ago
Select Delta flight, departing Sun, 18 Jan. from Sydney to Vail, returning Wed, 28 Jan., priced at AU$1,281 found 5 days ago
*Available to Expedia members.