Image Credits: Alan Stark, Creative Commons 2.0
Published June 26, 2025 by

Nonstop Flights: Austin to/from Denver $38-$48 r/t ($19-$24 each-way) [July-November] (No Thanksgiving) – Frontier

[06/26/2025 @ 10:03 AM CT] Deal time-stamp.
[2025-06-27 09:43:00] Deal expired or removed. If it goes back online we will send out another notification.

Deals are usually valid 24 to 72 hours after posting, but can expire at any time (see time-stamp).

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Or book with these sites: Frontier, Priceline, Skyscanner, Expedia, Travelocity, Tripadvisor, Orbitz, CheapTickets, Kayak.

Frontier has round-trip flights from Austin (AUS) to Denver (DEN) for $38-$48, NONSTOP. One-way starting at $19. Flights July to November. Departures on Monday, Tuesday, Wednesday, Thursday, and Saturday. Extended weekends available. Origin/Destination reversible. No Thanksgiving dates.

If you use the Frontier Airlines World Mastercard®, you can avoid bag fees for your first two standard-sized checked-bags. The card has a $99 annual fee, so keep in mind that you’ll need to use the free bag perk at least once a year to break even. Bags normally cost between $49-to-$99 each-way, so if you plan on traveling with bags on Frontier often you can get a lot of potential savings from this perk.

If you don’t have a way to avoid bag fees, consider using a small backpack as your “personal item” when flying Frontier. Dimensions for my Jansport backpack are: 18″ x 13″ x 8.5″. Which is half-an-inch larger than what is officially allowed by Frontier, but it has never been a problem for me. Bag designs like the Jansport SuperBreak backpack (linked) have the same dimensions as the bag I’m using, and also have a large main compartment, which makes it ideal for stuffing as much as you can into the limited amount of space.

Recently starting in 2025, Frontier has made some changes to how they operate bringing them closer in-line to a regular carrier. The first change is adding “first class” seating in the first two rows of their aircraft, the seat size and type is similar to business/first class domestic seating on most regular carriers. The second change is allowing Gold Status and above to get complimentary upgrades into the new “first class” seating. The last major change is that Platinum and Diamond Elite members can get a companion pass for just the tax+fees, which isn’t free, but it avoids the airfare cost of the ticket. There is no limit on the number of times the Companion Travel benefit can be used and the companion can be changed for each flight. This can generate substantial savings if you travel with a partner on Frontier often.

You can usually save more money by booking your flight+hotel together as a package instead of separately.

Do a search on Tripadvisor to find guides, tours, restaurants, attractions, and cool things to do. It’s a good resource to help me plan your day-to-day itinerary while on vacation.

We post new flight deals often! You can check out our other deals by returning to the Front Page of our website: escapeatx.com (linked).

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  • Tips: Rent a car for cheaper by using Priceline’s “Express Deals”. The rental car company will be hidden until after you purchase, but this allows those companies to undercut the published rate indirectly. You can remove low quality companies from those hidden results. The trick is to use the quality filter on their website to remove any rental car company with a review rating under 7.0 and then pick the deals that survive the filter. Note that the quality filter is only available on the desktop/web version of the Priceline website and isn’t available on the mobile version.
  • Tips: Use Tripadvisor to create a Hotel “short list”. First, plug in your dates and destination. Then select “Sort by Traveler Ranked”. Finally, select the “Traveler Ranking” filter to show “only 4* and up”. Use this resulting “short list” of hotels to find the cheapest one with a high ranking.
  • Tips: Hotel rates for Weekend dates are usually higher than the rates for Sunday through Thursday. Tripadvisor has a color-coded date calendar, red when the average hotel price for that day is more expensive, green for less expensive. You can use this to get an overview of what dates in the month are at a discount.
  • Tips: Different booking websites will often have differing routes, prices, and availability. Before you finalize your purchase, do a quick check on BookingBuddy, Skyscanner, and Kayak to see if any other site or airline is offering a better deal.

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Ren P. Artemio

Ren P. Artemio

Ren is the Chief Director of Nap Times at Escape Houston, Escape ATX, Cheap DFW, and Escape Flights. He really likes researching airfare and the travel industry, especially when it means getting a cheap flight to anywhere (he's not picky).

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