Best time to fly out of San Angelo Mathis (SJT)
The early-flight folk wisdom holds up at San Angelo Mathis: departures in the Before 6am band left on time 86.9% of the time, against 73.2% in the 6–8pm band. These are historical odds, not forecasts. The records say what happened on this schedule over three years; they know nothing about tomorrow’s thunderstorm.
Data through June 2026 · Bureau of Transportation Statistics
On-time rate by hour and day
On this page, “on time” means a departure that pushed back less than 15 minutes behind its scheduled time — the Bureau of Transportation Statistics definition, and the one airlines are held to.
| Departure time | Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|---|---|---|---|---|---|---|
| Before 6am | 85 | 87 | 86 | 87 | 88 | 86 | 89 |
| 6–8am | – | – | – | – | – | – | – |
| 8–10am | – | – | – | – | – | – | – |
| 10am–12pm | 85 | 88 | 88 | 91 | 86 | 86 | 85 |
| 12–2pm | – | – | – | – | – | – | – |
| 2–4pm | – | – | – | – | – | – | – |
| 4–6pm | – | – | – | – | – | – | – |
| 6–8pm | 71 | 76 | 77 | 71 | 71 | 74 | 73 |
| 8–10pm | – | – | – | – | – | – | – |
| 10pm–12am | – | – | – | – | – | – | – |
The steadiest stretch at SJT was Before 6am — 86.9% of departures left on time across 939 flights. The weakest was 6–8pm at 73.2%.
The year at SJT
April was the hard month at SJT: 76.4% of departures left on time, across 270 flights. December was the easy one at 90%. Each month pools three years of that month, so a single bad week does not decide it.
| Month | Share departures that left on time | Flights |
|---|---|---|
| January | 79.4% | 278 |
| February | 80.7% | 245 |
| March | 81.6% | 279 |
| April | 76.4% | 270 |
| May | 79.2% | 278 |
| June | 78.8% | 270 |
| July | 82.8% | 277 |
| August | 87.9% | 278 |
| September | 85.3% | 264 |
| October | 84.5% | 275 |
| November | 83.1% | 261 |
| December | 90% | 274 |
Airlines at SJT
Every airline with at least 100 departures from SJT, busiest first. These are that airline’s departures from this airport only — its record across the country sits on its own page.
| Airline | Left on time | Typical delay | Cancelled | Departures |
|---|---|---|---|---|
| SkyWest Airlines | 80.9% | 107 min | 4.2% | 2,136 |
| Envoy Air | 85.7% | 88 min | 1.3% | 1,113 |
What delays out of SJT were put down to
Airlines file a reason with every arrival running 15 minutes late or more. Across 613 flights that departed SJT and ran 15 minutes late or more, the delay minutes break down with 45.5% put down to airline operations and 23.4% to late-arriving aircraft.
- Late-arriving aircraft 23.4%
- Airline operations 45.5%
- Air traffic & airport volume 8.3%
- Severe weather 22.2%
- Security 0.7%
Late-arriving aircraft is the knock-on category: the plane came in late, so it went out late again. It is why a 7am problem in Newark is still a problem in Denver at dinnertime, and why it is usually the biggest slice on the bar.
If you are connecting through SJT
Of 3,249 scheduled arrivals into SJT, 77.7% reached the gate less than 15 minutes behind schedule. Of the 621 arrivals that ran late, 49.1% were no more than 45 minutes behind — which is the difference between a tight connection and a new boarding pass.
Work out a specific layover — pick the airport and the minutes you have, and the tool reads the same arrival records back as a share.
Busiest routes out of SJT
Ranked by flights, with the share that arrived on time at the far end. Where a route carries enough flights for a page of its own the chip goes there; otherwise it goes to the destination airport.
- DFW 80.5% on time · 3,249 flights
SJT in one number
San Angelo Mathis (SJT)
Rank 230 of 363 US airports by departures. Steadiest stretch of the day: Before 6am. Hardest month: April.
Questions about SJT
- What is the best time of day to fly out of San Angelo Mathis?
- Before 6am. Departures in that band left on time 86.9% of the time across 939 flights, July 2023 through June 2026 — the best of the ten bands in the day. The 6–8pm band was the weakest at 73.2%.
- What is the worst month to fly out of SJT?
- April: 76.4% of the departures that flew left on time, with 270 scheduled. December was the other end of the year at 90%. Each figure pools three years of that calendar month.
- Which airline is most on time at SJT?
- Envoy Air — 85.7% of its 1,113 departures from SJT left on time. SkyWest Airlines sat at the other end at 80.9% over 2,136 flights. Only airlines with at least 100 departures here are ranked.
- How often are flights cancelled at SJT?
- 3.2% of scheduled departures were cancelled over July 2023 through June 2026. Cancellations are counted against everything scheduled, not against everything that flew — a rate that looks small still adds up to real people in a rebooking line.