Route on-time record
SLC to SAT: most on-time flights and the best time to fly
Salt Lake City (Salt Lake City International Airport) to San Antonio (San Antonio International Airport). 1,007 nonstop flights in Jun 2025 to May 2026, 84% arrived within 15 minutes and 0.9% were cancelled. The most reliable flight number was Delta 2680 at 1:25 PM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
SLC → SAT
Salt Lake City to San Antonio: 1,007 nonstop flights a year
On time (12 months)
84%
Cancelled
0.9%
avg delay 12 min
Best time to leave
9 AM to noon
86% on time vs 81% 6 to 9 PM
Most reliable airline
Delta
83% chance on time
Fares open on our travel partner (Aviasales). Pick the flight number you chose here.
Most reliable nonstop flights
Ranked by the chance the flight operates and arrives within 15 minutes of schedule, from Jun 2025 to May 2026 records.
#1 · Delta 2680
1:25 PM → 5:05 PM2h 40m nonstop
Local times, typical schedule. Last flown 2026-05-31.
85%
chance on time
- On time (history)
- 87%
- Cancelled
- 1.4%
- Avg arrival delay
- 12 min
- Arrived on time 87% of the time (142 flights, Jun 2025 to May 2026).
Moderate track record · 142 flights
Find Delta 2680 fares Opens this date on Aviasales#2 · Delta 3123
9:50 AM → 1:35 PM2h 45m nonstop
Local times, typical schedule. Last flown 2026-05-31.
83%
chance on time
- On time (history)
- 83%
- Cancelled
- 1.3%
- Avg arrival delay
- 9 min
- Arrived on time 83% of the time (156 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (9 AM to noon: 86% on time; 6 to 9 PM: 81%).
Moderate track record · 156 flights
Find Delta 3123 fares Opens this date on Aviasales#3 · Delta 2797
8:35 PM → 12:16 AM2h 41m nonstop
Local times, typical schedule. Last flown 2026-05-31.
81%
chance on time
- On time (history)
- 81%
- Cancelled
- 1.1%
- Avg arrival delay
- 15 min
- Arrived on time 81% of the time (358 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (6 to 9 PM: 81% on time; 9 AM to noon: 86%).
Strong track record · 358 flights
Find Delta 2797 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Delta Air Lines83%
1,006 flights · 84% on time as flown · 0.9% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- 9 AM to noon86%
364 flights · avg delay 9 min
- Noon to 3 PM85%
279 flights · avg delay 12 min
- 3 to 6 PM83%
55 flights · avg delay 9 min
- 6 to 9 PM81%
309 flights · avg delay 16 min
Best day: Saturday (85%). Worst: Thursday (80%).
On time by month
All airlines, Jun 2023 to May 2026. Several years per month, so one stormy season doesn't define a month. Travel-month estimates use this seasonal pattern.
What delays this route
- Airline (crew, maintenance, boarding)70%
- Late-arriving aircraft18%
- Air traffic control and airport volume8%
- Severe weather3%
Share of delay minutes by the cause airlines report to the US DOT.
Historical odds, not a guarantee. Built from the US DOT Bureau of Transportation Statistics on-time reports (Jun 2025 to May 2026), FAA ground stop and delay program advisories, and 20 years of airport weather observations. Covers US airlines that report to the DOT; schedules are flights operated recently, so confirm times when you book. ATIS Alerts is not affiliated with any airline. Fares are what Aviasales travelers saw in recent searches (USD, one way, 1 adult), not live quotes; the partner site shows the current price. Fare links go to our travel partner and may earn us a commission at no cost to you. Affiliate disclosure
SLC to SAT questions
- What time of day is best to fly SLC to SAT?
- 9 AM to noon: 86% of flights arrived on time, against 81% for departures 6 to 9 PM.
- Which airline is most on time from SLC to SAT?
- Delta, with a season-adjusted 83% chance of operating and arriving on time over 1,006 flights. The adjustment compares each airline with what the route did in the months it flew, so a carrier that skipped a stormy month gets no free credit.
- What is the worst month for delays on SLC to SAT?
- July (73% on time); the best was November (88%), averaged over Jun 2023 to May 2026.
- Is this a prediction for my flight?
- No. These are historical odds from the US DOT on-time reports, FAA advisories and airport weather records. Check your flight status and the FAA delay board on the day you fly.
More routes from SLC
- SAT to SLC (return)
- SLC to DEN 77%
- SLC to PHX 84%
- SLC to SEA 79%
- SLC to LAX 86%
- SLC to DFW 78%
- SLC to LAS 78%
- SLC to SFO 72%
- SLC to ORD 75%
- SLC to ATL 86%
- SLC to SAN 84%
- SLC to PDX 88%
- SLC to SMF 86%
Live status: FAA delays and ground stops