85% of flights leaving Yuma (YUM) arrived on time over the past 12 months, 10 points better than the national average of 76%. About 5 flights leave YUM on a typical day; 1.2% were cancelled. 86% 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. (93% on time). Worst: 6 a.m. (93%).
- Best month: September (91%). Worst: June (82%).
- Biggest delay cause: the airlines themselves (56% of delay minutes).
- Year on year: about the same (85% → 85%).
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 YUM: when a flight was late, it was under 45 minutes late 44% of the time. About 1 in 17 flights landed an hour or more late, and 1 in 65 three hours or more; 1.2% were cancelled outright.
- On time or early85%
- 15–30 min late3.6%
- 30–60 min late3.7%
- 1–2 hours late3.2%
- 2–3 hours late1.1%
- 3+ hours late1.5%
- Diverted0.2%
- Cancelled1.2%
Share of all 1,687 scheduled flights, past 12 months, by arrival time against schedule.
Best time of day to fly out of YUM
YUM is unusually consistent through the day. Flights scheduled to leave at 6 a.m. arrived on time 93% of the time; at 6 a.m. it was 93%, a 0-point gap. Taken together, early departures (5–9 a.m.) ran 93% on time against 75% 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 YUM was a 6 a.m. departure in October (94% on time); the least, 6 a.m. in March (84%). 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
June is the hardest month at YUM, with 82% of flights on time across 2023–2026; September is the best at 91%. Cancellations peak in November (2.6% of flights).
Airlines at YUM
American Airlines runs 100% of departures from YUM, so YUM 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 | 1,687 | 85% | 86% | 1.2% | −10 min |
Why flights are late at YUM
Airlines report a cause for every flight that arrives 15 or more minutes late. At YUM, 56% of delay minutes came from the airlines themselves: crew, maintenance, cleaning, fueling and baggage. Next is late-arriving aircraft at 29%.
The average taxi from gate to takeoff is 17 minutes, about typical for a large U.S. airport.
Month by month
Over the latest 12 months 85% of YUM departures were on time, against 85% in the 12 months before: essentially unchanged. The best recent month was August 2026 (90%); the worst, November 2025 (78%).
Last flights of the day
The last flight of the day is a different bet. Across routes from YUM, each airline's final departure was cancelled 1.7% of the time, against 1.0% for its earlier flights (1.6× 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. 1.4% of last flights landed 3+ hours late. The riskiest last flight out was American Airlines to Phoenix (1.7% cancelled).
| Last flight to | Airline | Leaves | Cancelled | 3h+ late | On time |
|---|---|---|---|---|---|
| PHX Phoenix | American Airlines | 5:00 p.m. | 1.7% | 1.4% | 74% |
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 YUM
- Book the earliest departure you can live with. At YUM the 6 a.m. flights do best.
- Traveling in June? 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 YUM; the one before it leaves you a backup.
- Delayed already? Most delays at YUM come from the airlines themselves. If your inbound plane is late, your flight will be too, whatever the board says.
Routes from YUM
Least reliable first. Routes with at least 365 flights a year.
| To | Flights | On time | Cancelled | Typical arrival |
|---|---|---|---|---|
| PHX Phoenix | 1,322 | 84% | 1.2% | −10 min |
| DFW Dallas | 365 | 90% | 1.4% | −13 min |
Flights into YUM
Arriving rather than leaving? These are the routes into Yuma / Marine Corps Air Station Yuma, least reliable first. The weakest is from Dallas (75% on time).
| From | Flights | On time | Cancelled |
|---|---|---|---|
| DFW Dallas | 365 | 75% | 2.2% |
| PHX Phoenix | 1,322 | 82% | 1.2% |
Questions about YUM delays
What is the best time to fly out of YUM?
Flights scheduled at 6 a.m.: over the past year 93% of YUM departures at that hour arrived on time, against 93% at 6 a.m., the worst hour.
What month has the most flight delays at YUM?
June (82% on time). September is the best month (91%).
Why are flights delayed at YUM?
The biggest cause was the airlines themselves (56% of delay minutes): crew, maintenance, cleaning, fueling and baggage. Then late-arriving aircraft (29%).
How often are flights cancelled at YUM?
1.2% of scheduled departures over the past 12 months, peaking in November at 2.6%.
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.