$87 Cheap Frontier Airlines flights Denver (DEN) to Milwaukee (MKE)

Scoring cheap one-way Frontier Airlines flights from DEN to MKE from $87 on Expedia couldn’t be easier — just filter by “Price (lowest to highest).” Or check out our budget-friendly return fares from $156 for your next break.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

January is one of the cheapest months to jet off to Milwaukee with Frontier Airlines. You could also find excellent prices on one-way and return tickets in February.

Begin your search one to three months before your departure to score cheap fares on Frontier Airlines flights from Denver Intl. Airport (DEN) to General Mitchell Intl. Airport (MKE). You can save 25% by booking your domestic flight 34 to 86 days in advance compared to last-minute reservations made 6 to 12 days out. You could also reduce costs by buying your fare on a Sunday, as it’s 6% cheaper on average than a Monday, the most expensive day to book.* Get your timing right, and you can enjoy significant savings on domestic trips.*Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC’s global airline sales database.

Use our “Nonstop” filter when browsing for direct Frontier Airlines flights from DEN to MKE. You can also compare other carriers offering the same nonstop route.

To find the earliest departures from DEN to MKE with Frontier Airlines, filter your search by “Early Morning” and “Morning.” Choosing an early flight generally means you’ll experience fewer cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.

Frontier Airlines flights from Denver Intl. Airport (DEN) to Milwaukee come in to General Mitchell Intl. Airport (MKE). This is the main gateway here.

Travel from DEN to MKE with Frontier Airlines and look forward to a range of benefits including a rewarding loyalty program. When you book through Expedia as a Frontier Miles and One Key™ member, you can also earn OneKeyCash™* to use on select future travel purchases.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

In most cases, you can reschedule or cancel your flight, although additional fees may apply if you booked more than 24 hours ago. Prefer to keep your options open? Make use of our “No cancel fee” or “Changes included” filter to find flights that won’t penalize you if you need to alter your plans. To update your itinerary, visit “Trips,” select your flight and click on “Manage Booking” for more details.