SLC to SAT flight delays & on-time performance
Nonstop flights from Salt Lake City International Airport to San Antonio International Airport · 1,087 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at SLC or SAT right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Salt Lake City (SLC) to San Antonio (SAT) arrived on time 85% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 0.8% were cancelled, and 5% arrived an hour or more late.
- Delta Air Lines is the only airline reporting nonstop flights on this route.
- Departures scheduled around 9am did best (87% on time); around 10am did worst (78%).
- Monday was the most reliable day to fly (88% on time) and Thursday the least (82%).
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (67%).
Which airline is most on time from SLC to SAT?
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 | 85% | 0.8% | 11 min | 4.7% | 1,008 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 9am87%317 flights
- 10am78%46 flights
- 1pm86%268 flights
- 2pm90%12 flights
- 5pm81%60 flights
- 8pm82%304 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday88%0.7% cancelled
- Tuesday87%0.0% cancelled
- Wednesday86%0.0% cancelled
- Thursday82%0.0% cancelled
- Friday82%0.7% cancelled
- Saturday85%2.8% cancelled
- Sunday82%2.0% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Airline (crew, maintenance, cleaning, fueling)67%
- Late-arriving aircraft20%
- Air traffic control & airport congestion8%
- Extreme weather4%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Airline (crew, maintenance, cleaning, fueling)88%
- Extreme weather13%
- Air traffic control & airport congestion0%
- Security0%
SLC to SAT: common questions
- How often are SLC to SAT flights on time?
- 85% 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 Salt Lake City to San Antonio cancelled?
- 0.8% of scheduled flights were cancelled (8 of 1,008).
- 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 63 min behind schedule on average, and 4.7% of flights were an hour or more late.
- How long is taxi time at SLC?
- Flights on this route spent 18 min taxiing from the gate to takeoff on average.
Related routes
Return trip: SAT to SLC — 87% on time
More flights from Salt Lake City
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: SLC → SAT, nonstop flights by US airlines that report to the DOT. How we calculate this.