77% of flights leaving Mosinee (CWA) arrived on time over the past 12 months, right at the national average of 76%. About 5 flights leave CWA on a typical day; 3.0% were cancelled. 80% pushed back from the gate on time, so most of the lateness is already there when the flight leaves the gate.
At a glance
- Best hour to fly: 6 a.m. (84% on time). Worst: 4 p.m. (70%).
- Best month: November (86%). Worst: August (74%).
- Biggest delay cause: the airlines themselves (38% of delay minutes).
- Year on year: getting worse (80% → 77%).
How late?
The on-time rate treats a flight 20 minutes late the same as one 5 hours late. Here's the split for flights leaving CWA: when a flight was late, it was under 45 minutes late 43% of the time. About 1 in 10 flights landed an hour or more late, and 1 in 36 three hours or more; 3.0% were cancelled outright.
- On time or early77%
- 15–30 min late5.9%
- 30–60 min late4.2%
- 1–2 hours late4.8%
- 2–3 hours late2.0%
- 3+ hours late2.8%
- Diverted0.2%
- Cancelled3.0%
Share of all 1,745 scheduled flights, past 12 months, by arrival time against schedule.
Best time of day to fly out of CWA
Departure time makes a real difference at CWA. Flights scheduled to leave at 6 a.m. arrived on time 84% of the time; at 4 p.m. it was 70%, a 14-point gap. Taken together, early departures (5–9 a.m.) ran 84% on time against 70% for the evening bank (5–10 p.m.). Early planes usually start the day at the airport, so they haven't had a chance to pick up delays elsewhere. By evening a late inbound aircraft, a crew running out of duty hours or an afternoon thunderstorm can push one late flight into the next.
Hour × month
Combine the two and the spread is wider still. The most reliable combination at CWA was a 6 a.m. departure in September (91% on time); the least, 6 a.m. in December (79%). If you can only move one thing, move the hour. Departure hour usually shifts the odds more than the month does.
Each cell: on-time rate for that departure hour in that calendar month, 2023–2026. Find your travel month, then look along the row for the greenest hour.
Best and worst months
August is the hardest month at CWA, with 74% of flights on time across 2023–2026; November is the best at 86%. Summer (June–August) runs 10 points worse than autumn: heavy schedules, peak loads and afternoon thunderstorms. Winter costs 7 points against autumn. Cancellations peak in March (5.2% of flights).
Airlines at CWA
American Airlines runs 58% of departures from CWA, so CWA is effectively its hub. When American Airlines has a bad day, so does the airport.
| Airline | Departures | On time | Left on time | Cancelled | Typical arrival |
|---|---|---|---|---|---|
| American Airlines | 1,016 | 76% | 79% | 4.1% | −12 min |
| Delta Air Lines | 729 | 78% | 81% | 1.5% | −14 min |
Why flights are late at CWA
Airlines report a cause for every flight that arrives 15 or more minutes late. At CWA, 38% of delay minutes came from the airlines themselves: crew, maintenance, cleaning, fueling and baggage. Next is late-arriving aircraft at 37%. Of the 53 cancellations, 57% were blamed on weather.
The average taxi from gate to takeoff is 18 minutes, about typical for a large U.S. airport.
Month by month
Over the latest 12 months 77% of CWA departures were on time, against 80% in the 12 months before, a decline of 3 points. The best recent month was May 2026 (88%); the worst, December 2025 (59%).
Last flights of the day
The last flight of the day is a different bet. Across routes from CWA, each airline's final departure was cancelled 4.4% of the time, against 2.1% for its earlier flights (2.1× as often). Late in the day crews run short on duty hours, aircraft arrive late from elsewhere, and with no later flight to fold passengers into, cancelling is easier for the airline. 1.9% of last flights landed 3+ hours late. The riskiest last flight out was American Airlines to Chicago (6.9% cancelled).
| Last flight to | Airline | Leaves | Cancelled | 3h+ late | On time |
|---|---|---|---|---|---|
| ORD Chicago | American Airlines | 6:21 p.m. | 6.9% | 1.1% | 66% |
| MSP Minneapolis | Delta Air Lines | 4:25 p.m. | 1.9% | 2.8% | 71% |
Each airline's last scheduled departure of the day on a route, on days it flies the route at least twice; past 12 months. Riskiest first.
Tips for flying out of CWA
- Book the earliest departure you can live with. At CWA the 6 a.m. flights do best.
- Traveling in August? Leave extra slack for anything that can't move: cruises, weddings, the last connection of the day.
- Need to arrive tonight? Don't book the last flight out of CWA; the one before it leaves you a backup.
- Delayed already? Most delays at CWA come from the airlines themselves. If your inbound plane is late, your flight will be too, whatever the board says.
Routes from CWA
Least reliable first. Routes with at least 365 flights a year.
| To | Flights | On time | Cancelled | Typical arrival |
|---|---|---|---|---|
| ORD Chicago | 1,016 | 76% | 4.1% | −12 min |
| MSP Minneapolis | 729 | 78% | 1.5% | −14 min |
Flights into CWA
Arriving rather than leaving? These are the routes into Central Wisconsin, least reliable first. The weakest is from Chicago (72% on time).
| From | Flights | On time | Cancelled |
|---|---|---|---|
| ORD Chicago | 1,016 | 72% | 4.1% |
| MSP Minneapolis | 729 | 75% | 1.5% |
Questions about CWA delays
What is the best time to fly out of CWA?
Flights scheduled at 6 a.m.: over the past year 84% of CWA departures at that hour arrived on time, against 70% at 4 p.m., the worst hour.
What month has the most flight delays at CWA?
August (74% on time). November is the best month (86%).
Why are flights delayed at CWA?
The biggest cause was the airlines themselves (38% of delay minutes): crew, maintenance, cleaning, fueling and baggage. Then late-arriving aircraft (37%).
How often are flights cancelled at CWA?
3.0% of scheduled departures over the past 12 months, peaking in March at 5.2%.
Hours are scheduled local departure times. "On time" means arriving less than 15 minutes late at the destination; cancelled and diverted flights count as not on time. Method.