Cheap Flights to New Castle

View ₩92,600 flight on Sat, Oct 4, 2025Opens in a new window

Popular airlines to New Castle

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 40% on select hotels after you book a flight*
  • payments icon

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

How much is the cheapest flight to New Castle?

Prices were available within the past 7 days and start at ₩92,600 for one-way flights and ₩196,100 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, Oct 4 - Mon, Oct 6
LAX
Los Angeles
DEN
Denver
₩196,100 Roundtrip, found 1 day ago
₩196,100
Roundtrip
found 1 day ago
Select Delta flight, departing Sat, Oct 4 from Los Angeles to Denver, returning Mon, Oct 6, priced at ₩196,100 found 1 day ago
United
Sat, Oct 4 - Mon, Oct 6
LAX
Los Angeles
DEN
Denver
₩244,900 Roundtrip, found 1 day ago
₩244,900
Roundtrip
found 1 day ago
Select United flight, departing Sat, Oct 4 from Los Angeles to Denver, returning Mon, Oct 6, priced at ₩244,900 found 1 day ago
American Airlines
Sat, Oct 4 - Mon, Oct 6
LAX
Los Angeles
DEN
Denver
₩268,600 Roundtrip, found 1 day ago
₩268,600
Roundtrip
found 1 day ago
Select American Airlines flight, departing Sat, Oct 4 from Los Angeles to Denver, returning Mon, Oct 6, priced at ₩268,600 found 1 day ago
Hawaiian Airlines
Wed, Oct 1 - Thu, Oct 23
ONT
Ontario
DEN
Denver
₩301,700 Roundtrip, found 4 days ago
₩301,700
Roundtrip
found 4 days ago
Select Hawaiian Airlines flight, departing Wed, Oct 1 from Ontario to Denver, returning Thu, Oct 23, priced at ₩301,700 found 4 days ago
Alaska Airlines
Fri, Nov 7 - Tue, Nov 25
ONT
Ontario
DEN
Denver
₩484,300 Roundtrip, found 4 days ago
₩484,300
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Fri, Nov 7 from Ontario to Denver, returning Tue, Nov 25, priced at ₩484,300 found 4 days ago

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

November is typically the cheapest month to fly

From ₩158,850 - ₩513,438 per traveler.

Searching for cheap flights to New Castle? No travel company presents more choices than Expedia if you're looking to compare flights to New Castle. With more airlines, cheaper flights, fewer stops, and more departure and arrival times travellers should ensure they search on Expedia before any holiday to Colorado. Expedia provides the cheapest flights to many destinations in Colorado and you may find even greater savings if you combine your flight with a hotel stay in New Castle.

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 traveler 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 liter), 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
Roundtrip price
₩196,100

Trending flights to New Castle

Prices were available within the past 7 days and start at ₩92,600 for one-way flights and ₩196,100 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Mon, Feb 2 - Wed, Feb 4
ICN
Seoul
DEN
Denver
₩798,800 Roundtrip, found 5 hours ago
₩798,800
Roundtrip
found 5 hours ago
Select American Airlines flight, departing Mon, Feb 2 from Seoul to Denver, returning Wed, Feb 4, priced at ₩798,800 found 5 hours ago
*Available to Expedia members.