Route on-time record
FAT to SAN: most on-time flights and the best time to fly
Fresno (Fresno Yosemite International Airport) to San Diego (San Diego International Airport). 1,721 nonstop flights in Jun 2025 to May 2026, 77% arrived within 15 minutes and 1.3% were cancelled. The most reliable flight number was Southwest 2188 at 6:30 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
FAT → SAN
Fresno to San Diego: 1,721 nonstop flights a year
On time (12 months)
77%
Cancelled
1.3%
avg delay 13 min
Best time to leave
Before 9 AM
90% on time vs 59% 6 to 9 PM
Most reliable airline
Southwest
77% chance on time
Lowest nonstop fare seen in the next two months: $216 (Alaska 3402 on 2026-10-28). 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 · Southwest 2188
6:30 AM → 7:45 AM1h 15m nonstop
Local times, typical schedule. Last flown 2026-05-31.
93%
chance on time
- On time (history)
- 95%
- Cancelled
- 0.0%
- Avg arrival delay
- 4 min
- Arrived on time 95% of the time (55 flights, Jun 2025 to May 2026).
- Never cancelled in 55 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 90% on time; 6 to 9 PM: 59%).
- Lands inside SAN's trouble window: 66% of its 166 ground stops and delay programs started between 6 AM and noon.
Limited track record · 55 flights
Find Southwest 2188 fares Opens this date on Aviasales#2 · SkyWest 3402 · sold as United Express, Delta Connection, American Eagle or Alaska
6:00 AM → 7:21 AM1h 21m nonstop
Local times, typical schedule. Last flown 2026-05-31.
90%
chance on time
- On time (history)
- 92%
- Cancelled
- 2.2%
- Avg arrival delay
- 5 min
- Arrived on time 92% of the time (346 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 90% on time; 6 to 9 PM: 59%).
- Lands inside SAN's trouble window: 66% of its 166 ground stops and delay programs started between 6 AM and noon.
Strong track record · 346 flights
Find 6:00 AM flight fares Opens this date on Aviasales#3 · SkyWest 3490 · sold as United Express, Delta Connection, American Eagle or Alaska
9:27 AM → 10:47 AM1h 20m nonstop
Local times, typical schedule. Last flown 2026-05-12.
80%
chance on time
- On time (history)
- 81%
- Cancelled
- 0.0%
- Avg arrival delay
- 21 min
- Arrived on time 81% of the time (21 flights, Jun 2025 to May 2026).
- Lands inside SAN's trouble window: 66% of its 166 ground stops and delay programs started between 6 AM and noon.
Limited track record · 21 flights
Find 9:27 AM flight fares Opens this date on Aviasales#4 · SkyWest 3322 · sold as United Express, Delta Connection, American Eagle or Alaska
10:07 AM → 11:32 AM1h 25m nonstop
Local times, typical schedule. Last flown 2026-05-31.
80%
chance on time
- On time (history)
- 90%
- Cancelled
- 0.0%
- Avg arrival delay
- 3 min
- Arrived on time 90% of the time (30 flights, Jun 2025 to May 2026).
- Never cancelled in 30 scheduled flights.
- Lands inside SAN's trouble window: 66% of its 166 ground stops and delay programs started between 6 AM and noon.
Limited track record · 30 flights
Find 10:07 AM flight fares Opens this date on Aviasales#5 · SkyWest 3104 · sold as United Express, Delta Connection, American Eagle or Alaska
12:15 PM → 1:35 PM1h 20m nonstop
Local times, typical schedule. Last flown 2026-05-12.
76%
chance on time
- On time (history)
- 76%
- Cancelled
- 0.0%
- Avg arrival delay
- 16 min
- Arrived on time 76% of the time (21 flights, Jun 2025 to May 2026).
Limited track record · 21 flights
Find 12:15 PM flight fares Opens this date on Aviasales#6 · Southwest 4655
5:25 PM → 6:45 PM1h 20m nonstop
Local times, typical schedule. Last flown 2026-05-31.
76%
chance on time
- On time (history)
- 75%
- Cancelled
- 0.0%
- Avg arrival delay
- 28 min
- Arrived on time 75% of the time (8 flights, Jun 2025 to May 2026).
Limited track record · 8 flights
Find Southwest 4655 fares Opens this date on Aviasales#7 · SkyWest 3018 · sold as United Express, Delta Connection, American Eagle or Alaska
3:41 PM → 5:04 PM1h 23m nonstop
Local times, typical schedule. Last flown 2026-05-31.
68%
chance on time
- On time (history)
- 58%
- Cancelled
- 0.0%
- Avg arrival delay
- 11 min
- Arrived on time 58% of the time (19 flights, Jun 2025 to May 2026).
Limited track record · 19 flights
Find 3:41 PM flight fares Opens this date on Aviasales#8 · SkyWest 3391 · sold as United Express, Delta Connection, American Eagle or Alaska
3:33 PM → 4:53 PM1h 20m nonstop
Local times, typical schedule. Last flown 2026-05-12.
65%
chance on time
- On time (history)
- 50%
- Cancelled
- 0.0%
- Avg arrival delay
- 38 min
- Arrived on time 50% of the time (18 flights, Jun 2025 to May 2026).
Limited track record · 18 flights
Find 3:33 PM flight fares Opens this date on Aviasales#9 · Southwest 2190
4:55 PM → 6:15 PM1h 20m nonstop
Local times, typical schedule. Last flown 2026-05-29.
62%
chance on time
- On time (history)
- 51%
- Cancelled
- 0.0%
- Avg arrival delay
- 23 min
- Arrived on time 51% of the time (39 flights, Jun 2025 to May 2026).
- Never cancelled in 39 scheduled flights.
- 58% of its delay minutes came from the plane arriving late from an earlier flight.
Limited track record · 39 flights
Find Southwest 2190 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Southwest Airlines77%
456 flights · 77% on time as flown · 0.6% cancel
- SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)76%
1,265 flights · 77% on time as flown · 1.5% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM90%
592 flights · avg delay 7 min
- 9 AM to noon77%
337 flights · avg delay 16 min
- Noon to 3 PM80%
161 flights · avg delay 12 min
- 3 to 6 PM68%
360 flights · avg delay 16 min
- 6 to 9 PM59%
271 flights · avg delay 22 min
Best day: Tuesday (83%). Worst: Friday (73%).
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
- Late-arriving aircraft36%
- Air traffic control and airport volume30%
- Airline (crew, maintenance, boarding)26%
- Severe weather7%
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
FAT to SAN questions
- What time of day is best to fly FAT to SAN?
- Before 9 AM: 90% of flights arrived on time, against 59% for departures 6 to 9 PM. Later flights inherit delays from earlier ones, so the first departures of the day usually run best.
- Which airline is most on time from FAT to SAN?
- Southwest, with a season-adjusted 77% chance of operating and arriving on time over 456 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 FAT to SAN?
- December (67% on time); the best was September (86%), 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 FAT
- SAN to FAT (return)
- FAT to LAS 83%
- FAT to DEN 87%
- FAT to PHX 82%
- FAT to DFW 80%
- FAT to SLC 95%
- FAT to SFO 70%
- FAT to SEA 78%
- FAT to LAX 87%
- FAT to PDX 90%
Most on-time flights from FAT on every route →
Live status: FAA delays and ground stops