OO→MSP

Republic Airways cancels 6.6% of what it schedules here, the highest in the table. A cancelled flight never appears in an on-time rate, so read that column alongside the punctuality one rather than after it.

The early departures do better, though not dramatically: 83.5% on time for the 5am–8am window against 75.9% for 2pm–5pm. Worth taking if the schedule allows, not worth an extra connection. The 8am–11am window is the busiest, with 7,202 flights scheduled in it.

December is the weak month at 58.7% on time, against 91.4% in October. Winter delays cluster: a single storm system can account for most of a month's shortfall, so an average December hides both very good weeks and genuinely unflyable days. May was the busiest month here, with 2,787 flights.

Extreme weather accounts for 19% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the monthly strip above is the more useful view of the risk. The national share is 6%, so this operation carries roughly 3.2 times the usual weather exposure. The split is drawn from 481,422 reported delay minutes.

Cancellations sit at 1.51% against a national 1.89%, which is ordinary. Diversions add another 0.31%.

8.5% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last an hour and a half, which a normal layover absorbs.

28,179 flights sit behind these numbers, which is a large enough sample that the headline rate is not moving on noise. Where a sub-group falls below 30 flights the site shows a dash instead of a percentage.

Put together: the calendar is the biggest lever here, not the carrier or the hour. October runs 91.4% on time and December 58.7%, a swing of 33 points. If the dates move at all, move them out of December before you think about anything else. 27,667 completed flights over 12 months sit behind that.