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Route Reliability

Milwaukee → Denver

MKE–DEN · 896 miles · Milwaukee Mitchell International Airport to Denver International Airport

85
Pretty Reliable
WanderNerd Reliability Score
79%
Arrive within 15 minutes
7 min
Average arrival delay
0.5%
Cancelled
2,340
Flights in the data

Data through May 2026.

Who flies it best

Ranked by on-time arrivals. Historical results, not predictions.

  1. 1.Southwest Airlines81%1,261 flights
  2. 2.United Airlines78%1,010 flights

Not enough history to rank: Frontier Airlines (69 flights). We rank airlines only after 100 flights on the route.

What the data says

Morning-you made the right choice.

MKE–DEN flights departing between 3–6 AM arrived on time 97% of the time, versus 61% between 6–9 PM.

Wednesday has been the better bet.

A small edge: 82% on time on Wednesdays against 77% on Mondays.

Not much between Southwest Airlines and United Airlines.

On this route they all land within 78% to 81% on time. Pick on schedule and price.

Flights on this route

The breakdown

On-time by weekday
  • Mon77%(368 flights)
  • Tue80%(315 flights)
  • Wed82%(324 flights)
  • Thu79%(335 flights)
  • Fri80%(370 flights)
  • Sat80%(272 flights)
  • Sun78%(341 flights)
On-time by departure window
  • 3–6 AM97%(295 flights)
  • 6–9 AM85%(500 flights)
  • 9 AM–12 PM86%(394 flights)
  • 12–3 PM80%(327 flights)
  • 3–6 PM69%(449 flights)
  • 6–9 PM61%(360 flights)
On-time trend by month
79%
May

Jun 81% → May 79% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202581%231
July 202573%266
August 202574%238
September 202583%226
October 202585%232
November 202584%170
December 202569%168
January 202680%154
February 202688%136
March 202681%155
April 202681%160
May 202679%189

Keep nerding

Based on 2,340 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.