Route guide · 776 miles
Cheap Flights from Austin to Denver
AUS → DEN · Nonstop 2h 5m · Live round-trip fares
If Denver is next on your list, here's the honest picture on fares from Austin. The trip covers about 776 miles and takes roughly 2h 5m in the air. Prices on this route reward planners: booking 2–4 weeks ahead is the sweet spot, and the lowest fares tend to sell out fast.
Live fares for AUS → DEN are updating. Use the search below for real-time prices.
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See live fares
Updated daily
Flight time
2h 5m
Nonstop, typical
Distance
776 mi
AUS → DEN
Book ahead
2–4 weeks
Best window, typically
Nonstop airlines
3
Frontier Airlines, United Airlines & more
Nonstop flights from Austin to Denver
Want to skip the layover? Nonstops from Austin to Denver are flown by Frontier Airlines, United Airlines, Southwest Airlines, getting you there in about 2h 5m. For the lowest fares, book around 2–4 weeks before departure — last-minute nonstops on this route rarely come cheap.
Booking insights: Austin → Denver
- Distance: 776 miles · nonstop flight time: 2h 5m.
- Cheapest upcoming week in the live data starts around Oct 29, with fares from $33.
- Rule of thumb for this route: the sweet spot is usually 2–4 weeks before departure.
- Midweek departures (Tue–Thu) are consistently cheaper than weekend flights.
- Set a free Airfare Deal alert instead of checking daily — the best fares can sell out in hours.
Price trend
Cheapest departure weeks ahead
Departing around Oct 29 is currently the cheapest window — about $182 less than the nearest weeks. Based on recent fares found for this route; prices change quickly.
Cheapest month · Austin → Denver
October 2026
Every date's recent round-trip fare, at a glance.
Fares from
$33
Cheapest: Sat, Oct 31 — $33 · Priciest: Oct 18 — $215
Get this fare →Recent fares found for specific dates in October 2026. Blank days had no recent fare in our data — ask our team and we'll check them for you.
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Flying from Austin to Denver: what you need to know
The flight
Austin to Denver covers 776 miles, and a nonstop gets it done in about 2h 5m. That's long enough to settle in with a coffee and a downloaded show, short enough that a connection rarely makes sense — a layover usually doubles your travel day to save very little.
Airlines on this route
Frontier Airlines, United Airlines and Southwest Airlines fly this route nonstop. That matters more than it sounds: the cheapest fare on one carrier is rarely the same product as the cheapest on another. Checked-bag fees, free seat selection and change rules all differ, so compare the full trip cost before you pick a winner. See our airline guides for exactly what each carrier charges — then send an enquiry and we'll confirm the all-in price for your dates.
Leaving from Austin (AUS)
Plan to be at the airport two hours before a domestic departure — ninety minutes can work at smaller airports outside peak times, but security lines are the one variable you can't control. If you're checking a bag, add time rather than cutting it close. Our Austin airport guide covers terminals, parking and ground transport so you can plan the trip to the airport, not just the flight.
Arriving in Denver (DEN)
Before you land, know how you're getting from the airport to where you're staying — it's the part of the trip people forget to plan. The Denver airport guide lays out your ground options, from transit and shuttles to rideshares and rental cars. Flying back the other way? Check Denver to Austin fares — prices on the return direction often move on a different rhythm.
When to book
For a trip of 776 miles, booking 2–4 weeks ahead typically lands you in the sweet spot. Leave it to the final two weeks and prices usually climb as the cheapest seats sell out. If your dates are flexible, midweek departures are where the lower fares hide on most domestic routes.
Good to know before you go
- Screenshot your fare before you enquire — prices move, and a saved fare helps our team match or beat it.
- Flexible dates? Search a few days either side — one day can change the fare a lot.
- Morning flights are delayed less often than evening ones — earlier departures have the best on-time record.
- Basic economy fares often exclude checked bags and seat selection. Price the whole trip, not the headline fare.
- Get to the airport two hours before departure; security, not the flight, is the part that runs late.
Austin to Denver flight FAQs
How long is the flight from AUS to DEN?
A nonstop from AUS to DEN clocks in at around 2h 5m for the 776-mile trip. If you're connecting, budget an extra 2–4 hours depending on where you stop.
Are there nonstop flights from Austin to Denver?
Yes — look for Frontier Airlines, United Airlines, Southwest Airlines on this route. Nonstop seats are usually priced best 2–4 weeks before departure.
What is the cheapest month to fly from Austin to Denver?
There's no single magic month, but prices on this route generally soften in the shoulder season, when demand dips after the holidays and again in early fall. A free fare alert is the easiest way to catch those windows.
How much are last minute flights from AUS to DEN?
Last-minute flights from AUS to DEN (booked within 7 days of departure) typically cost noticeably more than fares booked 2–4 weeks out. Booking early is the smarter move.
What is a good round-trip deal from Austin to Denver?
A good deal is anything at or below the recent fares shown above. Set a free Airfare Deal alert and we'll ping you the moment fares drop.
Which airlines fly from Austin to Denver?
The main carriers on this route are Frontier Airlines, United Airlines, Southwest Airlines. Comparing all of them on the live search below usually surfaces the lowest fare for your dates.
How early should I get to Austin airport for this flight?
Plan on two hours before departure for a domestic flight — ninety minutes can work at smaller airports outside peak times. If you're checking a bag, earlier is better; the bag-drop line, not the flight, is what runs late.
Do the cheapest fares on this route include a checked bag?
Usually not. Basic economy fares on most airlines include a carry-on but charge extra for checked bags, and seat selection can cost more too. Add up the real total before comparing — a slightly higher regular fare sometimes works out cheaper. Our team confirms the full breakdown with you before you pay.
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