Cheap flights from Austin to Denver from $136 AUS → DEN
Austin-Bergstrom International Airport (AUS) → Denver International Airport (DEN)
The cheapest return found recently is $136 with Frontier Airlines, 10 Dec – 15 Dec, found 2 days ago. The cheapest one-way found recently is $144 with Frontier Airlines, 23 Nov, found 5 days ago.
- Cheapest one-way found recently
- $144, Frontier Airlines, found 5 days ago
- Cheapest return found recently
- $136, 10 Dec to 15 Dec
- Usual return price
- $143 to $182
- Cheapest month to fly
- December 2026, return fares from $136 found in the last 7 days
- Airlines with nonstop flights
- Frontier Airlines
- Shortest nonstop flight found
- 2 h 27 min
Return
The cheapest return fare on each of 3 departure dates is usually $143 to $182.
Cheapest return found recently
$136
10 Dec – 15 Dec · Frontier Airlines
Austin-Bergstrom International Airport (AUS) → Denver International Airport (DEN)
Leaves 6:30 p.m. · Return leaves 2:26 p.m. · 4 h 38 min of travel, both ways together
out nonstop, back nonstop
found 2 days ago
Cheapest nonstop return
$136
10 Dec – 15 Dec · Frontier Airlines
Austin-Bergstrom International Airport (AUS) → Denver International Airport (DEN)
Leaves 6:30 p.m. · Return leaves 2:26 p.m. · 4 h 38 min of travel, both ways together
out nonstop, back nonstop
found 2 days ago
Found recently, and the cheapest we hold
$136 10 Dec – 15 Decfound 2 days agoSee prices for these dates
It is also the cheapest return we hold, of any age.
What have prices looked like?
Over 49 days, 24 Sept to 11 Nov, the cheapest return we saw each day was $64 to $186.
Those were the prices on those days, not today's.
Is this a good return price?
Compared with the cheapest return fare on each of 3 departure dates from 10 Dec to 15 Feb 2027, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.
Could nearby dates be cheaper?
We hold no other 5-night return fares leaving within 3 days of 10 Dec to compare.
Every date we hold
4 fares on 3 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 10 Dec – 15 Dec | $136 | Frontier Airlines | Austin-Bergstrom International Airport (AUS) → Denver International Airport (DEN) | out nonstop, back nonstop | found 2 days ago | See prices for these dates |
| 25 Dec – 29 Dec | $215 | Frontier Airlines | Austin-Bergstrom International Airport (AUS) → Denver International Airport (DEN) | out nonstop, back 1 stop | found 2 days ago | See prices for these dates |
| 15 Feb 2027 – 20 Feb 2027 | $149 | Frontier Airlines | Austin-Bergstrom International Airport (AUS) → Denver International Airport (DEN) | out nonstop, back nonstop | found yesterday | See prices for these dates |
Which month looks cheapest?
December 2026 is the cheapest month — from $136.
Airlines on the cheapest dates: Frontier Airlines.
One-way
Not enough comparable prices yet for a usual one-way price.
Cheapest one-way found recently
$144
23 Nov · Frontier Airlines
Austin-Bergstrom International Airport (AUS) → Denver International Airport (DEN)
Leaves 8:04 p.m. · 2 h 27 min trip
nonstop
found 5 days ago
Cheapest nonstop one-way
$144
23 Nov · Frontier Airlines
Austin-Bergstrom International Airport (AUS) → Denver International Airport (DEN)
Leaves 8:04 p.m. · 2 h 27 min trip
nonstop
found 5 days ago
Found recently, and the cheapest we hold
$144 23 Novfound 5 days agoOpen this trip
It is also the cheapest one-way we hold, of any age.
What have prices looked like?
Over 41 days, 24 Sept to 11 Nov, the cheapest one-way we saw each day was $28 to $151.
Those were the prices on those days, not today's.
Is this a good one-way price?
Not enough comparable prices yet: we hold one-way fares on 1 departure date and need at least 3 to say what is usual.
Could nearby dates be cheaper?
We hold no other one-way fares leaving within 3 days of 23 Nov to compare.
Every date we hold
1 fares on 1 departure dates
See every date as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 23 Nov | $144 | Frontier Airlines | Austin-Bergstrom International Airport (AUS) → Denver International Airport (DEN) | nonstop | found 5 days ago | Open this trip |
Airlines on the cheapest dates: Frontier Airlines.
Premium cabin fares from Austin to Denver
We hold no premium economy, business or first-class fares for this route: we collect them for the busiest routes, and this one is not among them yet.
Today's prices for 10 Dec – 15 Dec in another cabin: Premium economy · Business · First
Today's prices for 23 Nov in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Austin to Denver?
Return
Fares 14 to 29 days before departure were typically 73% lower than 0 to 6 days before departure.
From the cheapest return each day between 24 Sept and 11 Nov (49 days), grouped by how many days ahead the flight left; one adult in economy.
Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.
Prices reflect recent searches — current fares may differ.
See these ranges as a table
| Booked ahead by | Typical fare | Cheapest day | Above the cheapest | Days of prices |
|---|---|---|---|---|
| 0–6 days | $316 | $82 | +272% | 15 |
| 7–13 days | $171 | $64 | +101% | 17 |
| 14–29 days | $85 | $64 | Cheapest seen | 30 |
| 30–59 days | $97 | $88 | +14% | 22 |
| 60–89 days | $116 | $116 | +37% | 11 |
| 90–179 days | $144 | $130 | +69% | 22 |
| 180+ days | $341 | $341 | +301% | 8 |
One-way
Fares 14 to 29 days before departure were typically 85% lower than 0 to 6 days before departure.
From the cheapest one-way each day between 24 Sept and 11 Nov (41 days), grouped by how many days ahead the flight left; one adult in economy.
Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.
Prices reflect recent searches — current fares may differ.
See these ranges as a table
| Booked ahead by | Typical fare | Cheapest day | Above the cheapest | Days of prices |
|---|---|---|---|---|
| 0–6 days | $215 | $133 | +552% | 11 |
| 7–13 days | $141 | $28 | +327% | 17 |
| 14–29 days | $33 | $28 | Cheapest seen | 29 |
| 30–59 days | $80 | $37 | +142% | 9 |
| 60–89 days | $94 | $94 | +185% | 8 |
Live price for these dates
The cheapest return found recently is for 10 Dec – 15 Dec. A live search on this page shows what those dates cost now, for one adult in economy.
Questions about this trip
How much is a return flight from Austin to Denver?
The cheapest return found recently is $136 with Frontier Airlines, 10 Dec to 15 Dec, found 2 days ago. The cheapest return fare on each of 3 departure dates is usually $143 to $182.
How much is a one-way flight from Austin to Denver?
The cheapest one-way found recently is $144 with Frontier Airlines, 23 Nov, found 5 days ago.
What is the cheapest month to fly from Austin to Denver?
December 2026 is the cheapest month for a return, from $136, 10 Dec to 15 Dec, found 2 days ago.
How far ahead should I book a flight from Austin to Denver?
In 49 days of prices between 24 Sept and 11 Nov, return fares 14 to 29 days before departure were typically 73% lower than 0 to 6 days before departure. In 41 days of prices between 24 Sept and 11 Nov, one-way fares 14 to 29 days before departure were typically 85% lower than 0 to 6 days before departure.
Is there a direct flight from Austin to Denver?
Yes, the cheapest nonstop return found recently is $136 with Frontier Airlines, 10 Dec to 15 Dec, found 2 days ago. The cheapest nonstop one-way found recently is $144 with Frontier Airlines, 23 Nov, found 5 days ago.
How long is the flight from Austin to Denver?
The cheapest nonstop one-way found recently, with Frontier Airlines on 23 Nov, takes 2 h 27 min from Austin-Bergstrom International Airport (AUS) to Denver International Airport (DEN).
Which airlines have the cheapest flights from Austin to Denver?
Between 10 Dec and 15 Feb 2027, Frontier Airlines has the cheapest return on all 3 departure dates we hold.
Prices are what travelers' searches on Aviasales found in the last 7 days, in US dollars: the price the seller showed on Aviasales; bags may cost extra. Fares change, so check today's price before you book. How our prices work