Cheapest one-way flights from Milwaukee to Denver in September from $62

AirHint found the following cheapest one-way flights from Milwaukee (MKE) to Denver (DEN) in September 2025 (see full year).

One-Way flights

22 Sep Frontier Airlines direct
26 Sep Frontier Airlines direct
05 Sep Frontier Airlines direct
01 Sep Frontier Airlines direct
28 Sep Frontier Airlines direct
25 Sep United direct
02 Sep American Airlines
06 Sep American Airlines
02 Sep Southwest Airlines direct

Also check the deals for return flights from Milwaukee to Denver in September.

Skyscanner

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

Feel free to contact us with any feedback or request another flight research.