SAT to SLC flight delays & on-time performance
Nonstop flights from San Antonio International Airport to Salt Lake City International Airport · 1,087 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at SAT or SLC right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from San Antonio (SAT) to Salt Lake City (SLC) arrived on time 87% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 0.9% were cancelled, and 4% arrived an hour or more late.
- Delta Air Lines is the only airline reporting nonstop flights on this route.
- Departures scheduled around 7am did best (95% on time); around 12pm did worst (78%).
- Wednesday was the most reliable day to fly (91% on time) and Thursday the least (81%).
- The largest source of delay minutes was late-arriving aircraft (51%).
Which airline is most on time from SAT to SLC?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| Delta Air Lines | 87% | 0.9% | 11 min | 4.4% | 1,009 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 6am93%102 flights
- 7am95%252 flights
- 12pm78%242 flights
- 1pm83%81 flights
- 2pm91%33 flights
- 5pm89%100 flights
- 6pm82%177 flights
- 7pm100%12 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday87%0.7% cancelled
- Tuesday87%0.0% cancelled
- Wednesday91%0.0% cancelled
- Thursday81%0.0% cancelled
- Friday84%0.6% cancelled
- Saturday88%2.8% cancelled
- Sunday90%2.7% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft51%
- Airline (crew, maintenance, cleaning, fueling)41%
- Air traffic control & airport congestion7%
- Extreme weather1%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Airline (crew, maintenance, cleaning, fueling)89%
- Extreme weather11%
- Air traffic control & airport congestion0%
- Security0%
SAT to SLC: common questions
- How often are SAT to SLC flights on time?
- 87% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from San Antonio to Salt Lake City cancelled?
- 0.9% of scheduled flights were cancelled (9 of 1,009).
- How long are typical delays?
- Across all flights the average arrival delay was 11 min (early arrivals count as zero). Flights that were late arrived 75 min behind schedule on average, and 4.4% of flights were an hour or more late.
- How long is taxi time at SAT?
- Flights on this route spent 14 min taxiing from the gate to takeoff on average.
Related routes
Return trip: SLC to SAT — 85% on time
More flights from San Antonio
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: SAT → SLC, nonstop flights by US airlines that report to the DOT. How we calculate this.