Cheap flights To New Castle (DEN) from $28

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Cheap Flights to New Castle from $28 One Way, $56 Round Trip

Prices found within past 7 days. Prices and availability subject to change. Additional terms may apply.

Tue, Sep 22 - Sat, Sep 26
LAX
Los Angeles Intl.
DEN
Denver Intl.
$56 Roundtrip, just found
$56
Roundtrip
just found
Select Frontier Airlines flight, departing Tue, Sep 22 from Los Angeles Intl. to Denver Intl., returning Sat, Sep 26, priced at $56 just found
Tue, Jun 23 - Tue, Jun 30
DFW
Dallas-Fort Worth Intl.
DEN
Denver Intl.
$79 Roundtrip, just found
$79
Roundtrip
just found
Select Frontier Airlines flight, departing Tue, Jun 23 from Dallas-Fort Worth Intl. to Denver Intl., returning Tue, Jun 30, priced at $79 just found
Tue, Sep 15 - Sat, Sep 19
ORD
O'Hare Intl.
DEN
Denver Intl.
$81 Roundtrip, found 6 days ago
$81
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Tue, Sep 15 from O'Hare Intl. to Denver Intl., returning Sat, Sep 19, priced at $81 found 6 days ago
Wed, Jul 15 - Tue, Jul 21
LAX
Los Angeles Intl.
DEN
Denver Intl.
$117 Roundtrip, found 12 hours ago
$117
Roundtrip
found 12 hours ago
Select United flight, departing Wed, Jul 15 from Los Angeles Intl. to Denver Intl., returning Tue, Jul 21, priced at $117 found 12 hours ago
Tue, Aug 18 - Wed, Aug 19
LAX
Los Angeles Intl.
DEN
Denver Intl.
$117 Roundtrip, found 1 day ago
$117
Roundtrip
found 1 day ago
Select Southwest Airlines flight, departing Tue, Aug 18 from Los Angeles Intl. to Denver Intl., returning Wed, Aug 19, priced at $117 found 1 day ago
Wed, Jul 15 - Tue, Jul 21
LAX
Los Angeles Intl.
DEN
Denver Intl.
$117 Roundtrip, found 12 hours ago
$117
Roundtrip
found 12 hours ago
Select Delta flight, departing Wed, Jul 15 from Los Angeles Intl. to Denver Intl., returning Tue, Jul 21, priced at $117 found 12 hours ago
Tue, Jul 28 - Tue, Aug 11
LAX
Los Angeles Intl.
DEN
Denver Intl.
$137 Roundtrip, found 6 days ago
$137
Roundtrip
found 6 days ago
Select American Airlines flight, departing Tue, Jul 28 from Los Angeles Intl. to Denver Intl., returning Tue, Aug 11, priced at $137 found 6 days ago
Fri, Jul 3 - Sat, Jul 4
DAL
Love Field
DEN
Denver Intl.
$197 Roundtrip, found 1 hour ago
$197
Roundtrip
found 1 hour ago
Select Southwest Airlines flight, departing Fri, Jul 3 from Love Field to Denver Intl., returning Sat, Jul 4, priced at $197 found 1 hour ago
Sat, Nov 7 - Sat, Nov 14
LAX
Los Angeles Intl.
DEN
Denver Intl.
$257 Roundtrip, found 4 hours ago
$257
Roundtrip
found 4 hours ago
Select Alaska Airlines flight, departing Sat, Nov 7 from Los Angeles Intl. to Denver Intl., returning Sat, Nov 14, priced at $257 found 4 hours ago
Sat, Sep 12 - Sat, Sep 19
LAX
Los Angeles Intl.
GJT
Grand Junction Regional
$271 Roundtrip, found 4 days ago
$271
Roundtrip
found 4 days ago
Select United flight, departing Sat, Sep 12 from Los Angeles Intl. to Grand Junction Regional, returning Sat, Sep 19, priced at $271 found 4 days ago

New Castle Flight Information

Traveling To
New Castle
Destination Airport IATA Code
DEN
Number of Airlines Serving
Airlines
Frontier Airlines, Southwest Airlines, Delta, United, American Airlines, Alaska Airlines
Flight Price
$56
Earliest Departing Flight
Latest Departing Flight

Book Your Flight & Hotel Together & Save

New Castle economy flight packages

Price found within the past 48 hours. Click for updated prices.
Twin Rivers Condominiums by Alderwood Colorado Management
3.0-star property

Twin Rivers Condominiums by Alderwood Colorado Management

Jun 24 - Jun 28

4 night stay

Minneapolis (MSP) to Denver (DEN)

Frontier Airlines • Roundtrip • Coach
Save 100% on your flight
Price was $667, price is now $453 per person
$453
per person
found 5 hours ago
A-Lodge Boulder
3.0-star property

A-Lodge Boulder

Jun 23 - Jun 27

4 night stay

Houston (IAH) to Denver (DEN)

Frontier Airlines • Roundtrip • Coach
Save 100% on your flight
Price was $975, price is now $664 per person
$664
per person
found 12 hours ago
Antlers at Vail
3.0-star property

Antlers at Vail

Jun 19 - Jun 23

4 night stay

Minneapolis (MSP) to Denver (DEN)

Frontier Airlines • Roundtrip • Coach
Save 100% on your flight
Price was $1,065, price is now $750 per person
$750
per person
found 2 hours ago
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New Castle premium economy flight packages

Price found within the past 48 hours. Click for updated prices.
Renaissance Denver Hotel & Conference Center
4.0-star property

Renaissance Denver Hotel & Conference Center

8.8/10 Excellent! (1,481 reviews)

Jun 24 - Jun 28

4 night stay

Los Angeles (LAX) to Denver (DEN)

Frontier Airlines • Roundtrip • PremiumEconomy
Price was $978, price is now $775 per person
$775
per person
found 1 day ago
Beautiful hotel. Need more staff for dinner almost waited 2 hours for our food. It had wonderful food and nice atmosphere but it literally just takes forever.

Reviewed on Jan 19, 2026

Patterson Inn
3.5-star property

Patterson Inn

9.6/10 Exceptional! (782 reviews)

Jun 24 - Jun 28

4 night stay

Los Angeles (LAX) to Denver (DEN)

Frontier Airlines • Roundtrip • PremiumEconomy
Price was $1,106, price is now $821 per person
$821
per person
found 1 day ago
Great breakfast, close to a lot restaurants and conference center, comfortable bed. Would stay again

Reviewed on Sep 28, 2025

the Curtis Denver - a DoubleTree by Hilton Hotel
4.0-star property

the Curtis Denver - a DoubleTree by Hilton Hotel

8.8/10 Excellent! (1,348 reviews)

Jun 24 - Jun 28

4 night stay

Los Angeles (LAX) to Denver (DEN)

Frontier Airlines • Roundtrip • PremiumEconomy
Price was $1,027, price is now $800 per person
$800
per person
found 1 day ago
Great location and cool design with different floors representing different themes. Free coffee in the morning. Sam’s number three next-door, which is a great local restaurant, famous from the tv show Diners Drive ins and Dives.

Reviewed on Jul 2, 2025

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New Castle

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Frequently asked questions

Which airlines fly to New Castle?
Pack your luggage and head for New Castle with one of the 20 airlines that jet into the city. Wherever you're coming from or whenever you're traveling, you're sure to find the ideal flight to Pitkin County Airport (ASE). The leading domestic airlines that jet into ASE are:

  • United Airlines - 140 flights to New Castle per month
  • American Airlines - 52 flights to New Castle per month

How much is a flight to New Castle?
If you're searching for round-trip flights, fares ranged from $56 to $271 this week. The lowest one-way price was $28, originating in Los Angeles (LAX).
How to book the cheapest flight to New Castle?
Snapping up cheap flights to New Castle is as simple as booking with Orbitz. But if you'd like to make sure you're grabbing the best flight deals around, here are some suggestions to keep in mind:

  • Taking off from or arriving at other airports can sometimes help you cut costs. Enter your preferred departure and arrival airports. Next, select the 'Nearby airports' function below to see what your options are.
  • Also, click on the 'Show flexible dates' option to bring up the fares on days around your selected departure. You may be able to find cheaper flight deals if you're flexible with your dates.
  • Hit 'Show options' to filter your search results. You can pick your preferred airline and seating class here. Under 'Sort & Filter' to the left, you can even specify whether you want to fly in the morning, afternoon or evening.
  • Lock in your fare as soon as you've decided on your travel dates. While you can get lucky on occasion, flights rarely drop in price as your date of departure nears.
  • Combine your flights, hotels and car rentals into one convenient package deal. Save your cash for things you're really excited about, like discovering every corner of New Castle.
  • Where possible, don't fly in the busy season. Airfares significantly increase during school breaks, summer and other vacation periods like Easter and Christmas.

What is the best time to book a flight to New Castle?
On average, the cheapest month to purchase a plane ticket is in January. This is followed by February and August. When looking for a cheap flight to New Castle, it always pays to be ready to book. Cheap deals emerge in an instant and don't wait around!
What day of the week is the cheapest to book a flight to New Castle?
To land a rewarding flight deal, make a booking on a Tuesday, Wednesday or Saturday. These are generally the cheapest days of the week to purchase seats to New Castle.
What is the cheapest day of the week to fly to New Castle?
You can pick up cheap flights to New Castle by flying out on a Monday, according to Orbitz data from 2020. Tuesday is also more affordable, while Saturday has the most expensive ticket prices. Whether you prefer to save money or fly out on whichever day is convenient, you'll always find a rewarding deal with Orbitz.
What is the cheapest month to fly to New Castle?
To secure cheap flights to New Castle, you should pack your suitcase and fly out in August. Orbitz data shows that generally, this is a great month to save big on your ticket. If you're eager to fly to New Castle during June, it's worth remembering that this is the most expensive time to travel.
Which airlines allow free cancellation?
We know that plans can change and flexibility is important. That's why you can search for flights that include free cancellation and no change fees on Orbitz. Just click on "Filter by flexible change policies" and we'll find you fares more flexible than candy in a hot car!
What do I need for the flight to New Castle?
Flying doesn't have to be a drag. In fact it can be a joy with a little pre-planning! Make your trip a comfortable one with the following helpful tips:

  • Your travel documents are the most important things you'll need to take with you on your flight to New Castle. To avoid any dramas during check-in, make sure that the information displayed on your ticket matches your government-issued photo ID.
  • To keep you amused on the short hop to New Castle, download some new music or restock the audiobook library on your tablet. Food can also be a delicious distraction while in the air, so take some light snacks.
  • No matter how hot it is outside, plane cabins can get a bit chilly. Bring a hoodie on board to keep yourself comfy.

How do I get cheap first-class/business deals to New Castle?
Smart travelers know how to find first or business-class flights to New Castle without the sky-high price tag. Be like them with these handy hints:

  • Flexibility is everything. By being open to a variety of travel dates, you'll have more chances of picking up a deal on your airfares.
  • Look for a low-cost airline that has business-class seats. They usually come with extra legroom and a glass of Champagne — and a more attractive price.
  • Bid for an upgrade in online auctions (if available) or upgrade your ticket through your loyalty program.

What is the best time to go to New Castle?
Anytime is an awesome time to vacation in New Castle, though February, May and June are the busiest months. Like most of the Northern Hemisphere, summer starts June 20. If you'd rather hang out in a lightweight top than a heavy winter coat, this time of the year would be perfect for you. Expect average daily highs of 75 ºF and nighttime lows around 50 ºF.

More to Explore

Fare, taxes & fees: Fares include all taxes and fees, except baggage fees. Rates shown reflect fares found by other Orbitz users over the past 7 days. Due to rapidly changing airline prices & seat availability, these fares may no longer be available.

Refunds/changes/cancellations: Itinerary changes, if permitted for the fare, will have a $30 service fee charged by Orbitz. Additional airline charges may apply.

Other conditions: Schedules, fares and rules are subject to change without notice. Seats are limited and may not be available on all flights/dates or in all markets. Lower fares may be available. Fares will not be honored retroactively or in exchange for any wholly/partially unused ticket. Tickets are non-transferable and non-refundable. Fare rules are provided for the selected itinerary before booking.