AirHint found the following cheapest return flights from Austin (AUS) to Denver (DEN) in April 2026 (see full year).

Return flights

03 Apr - 11 Apr	Frontier Airlines	direct
03 Apr - 12 Apr	Frontier Airlines	direct
10 Apr - 19 Apr	Delta	direct
10 Apr - 18 Apr	Delta	direct
03 Apr - 06 Apr	United	direct
01 Apr - 06 May	Southwest Airlines	direct

Also check the deals for one-way flights from Austin to Denver in April.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

Book a cheap hotel in Denver

Cheap car rent in Denver

Cheapest return flights from Austin to Denver in April from 160€

Return flights