SLC to SAN flight delays & on-time performance
Nonstop flights from Salt Lake City International Airport to San Diego International Airport · 626 miles · Aug 2025 – Jul 2026
- SAN: Airport closed. Closed, expected to reopen Oct 11 at 13:00 UTC.
On-time arrivals
82%
arrived < 15 min late
Cancelled
0.8%
25 flights
Avg arrival delay
11 min
53 min when late
Airlines
5
3,008 flights tracked
Key facts
- Flights from Salt Lake City (SLC) to San Diego (SAN) arrived on time 82% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 0.8% were cancelled, and 4% arrived an hour or more late.
- SkyWest Airlines was the most punctual airline here (85% on time); Southwest Airlines was the least (73%).
- Departures scheduled around 7am did best (93% on time); around 2pm did worst (66%).
- Tuesday was the most reliable day to fly (87% on time) and Friday the least (77%).
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (38%).
Which airline is most on time from SLC to SAN?
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 |
|---|---|---|---|---|---|
| Alaska Airlines | 100% | 0.0% | 0 min | 0.0% | 1 |
| SkyWest AirlinesRegional airline operating flights for United Express, Delta Connection, American Eagle and Alaska. | 85% | 0.9% | 10 min | 4.1% | 746 |
| Frontier Airlines | 84% | 2.5% | 9 min | 5.1% | 121 |
| Delta Air Lines | 83% | 0.8% | 10 min | 4.3% | 1,732 |
| Southwest Airlines | 73% | 0.2% | 13 min | 4.9% | 408 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 7am93%598 flights
- 8am91%87 flights
- 9am81%42 flights
- 10am80%216 flights
- 11am81%458 flights
- 12pm81%96 flights
- 2pm66%108 flights
- 3pm78%479 flights
- 5pm81%321 flights
- 6pm74%131 flights
- 7pm80%65 flights
- 8pm60%35 flights
- 9pm88%57 flights
- 10pm86%258 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday85%0.4% cancelled
- Tuesday87%0.5% cancelled
- Wednesday83%1.0% cancelled
- Thursday78%0.9% cancelled
- Friday77%0.9% cancelled
- Saturday84%1.3% cancelled
- Sunday82%0.9% 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)38%
- Late-arriving aircraft28%
- Air traffic control & airport congestion27%
- Extreme weather6%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Airline (crew, maintenance, cleaning, fueling)48%
- Extreme weather36%
- Air traffic control & airport congestion16%
- Security0%
SLC to SAN: common questions
- How often are SLC to SAN flights on time?
- 82% 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 Diego cancelled?
- 0.8% of scheduled flights were cancelled (25 of 3,008).
- 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 53 min behind schedule on average, and 4.3% 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: SAN to SLC — 84% 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 → SAN, nonstop flights by US airlines that report to the DOT. How we calculate this.