ATIS Alerts Smart Flight Search
Find the flight least likely to be delayed
BetaWe rank real flight numbers by how often they flew and arrived on time over the last 12 months, adjusted for your travel month and departure time, then check nearby airports and calmer connections. US airlines and airports.
OAK → SNA
Oakland to Santa Ana: 2,387 nonstop flights a year
On time (12 months)
86%
Cancelled
0.6%
avg delay 7 min
Best time to leave
Before 9 AM
95% on time vs 77% 3 to 6 PM
Most reliable airline
Southwest
86% 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 · Southwest 2268
6:25 AM → 7:55 AM1h 30m nonstop
Local times, typical schedule. Last flown 2026-05-31.
95%
chance on time
- On time (history)
- 98%
- Cancelled
- 0.0%
- Avg arrival delay
- 0 min
- Arrived on time 98% 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: 95% on time; 3 to 6 PM: 77%).
- Short track record (55 flights), so its score leans on the airline's record at this hour.
Limited track record · 55 flights
Find Southwest 2268 fares Opens this date on Aviasales#2 · Southwest 1892
6:05 AM → 7:35 AM1h 30m nonstop
Local times, typical schedule. Last flown 2026-04-01.
93%
chance on time
- On time (history)
- 100%
- Cancelled
- 0.0%
- Avg arrival delay
- 0 min
- Arrived on time 100% of the time (8 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 95% on time; 3 to 6 PM: 77%).
- Short track record (8 flights), so its score leans on the airline's record at this hour.
Limited track record · 8 flights
Find Southwest 1892 fares Opens this date on Aviasales#3 · Southwest 4097
6:45 AM → 8:10 AM1h 25m nonstop
Local times, typical schedule. Last flown 2026-04-06.
92%
chance on time
- On time (history)
- 93%
- Cancelled
- 0.0%
- Avg arrival delay
- 1 min
- Arrived on time 93% of the time (15 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 95% on time; 3 to 6 PM: 77%).
- Short track record (15 flights), so its score leans on the airline's record at this hour.
Limited track record · 15 flights
Find Southwest 4097 fares Opens this date on Aviasales#4 · Southwest 137
8:10 AM → 9:40 AM1h 30m nonstop
Local times, typical schedule. Last flown 2026-05-31.
91%
chance on time
- On time (history)
- 95%
- Cancelled
- 0.0%
- Avg arrival delay
- 6 min
- Arrived on time 95% of the time (38 flights, Jun 2025 to May 2026).
- Never cancelled in 38 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 95% on time; 3 to 6 PM: 77%).
- Short track record (38 flights), so its score leans on the airline's record at this hour.
Limited track record · 38 flights
Find Southwest 137 fares Opens this date on Aviasales#5 · Southwest 1984
10:00 AM → 11:25 AM1h 25m nonstop
Local times, typical schedule. Last flown 2026-04-06.
91%
chance on time
- On time (history)
- 96%
- Cancelled
- 4.0%
- Avg arrival delay
- 1 min
- Arrived on time 96% of the time (24 flights, Jun 2025 to May 2026).
- Short track record (24 flights), so its score leans on the airline's record at this hour.
Limited track record · 24 flights
Find Southwest 1984 fares Opens this date on Aviasales#6 · Southwest 3588
10:10 AM → 11:40 AM1h 30m nonstop
Local times, typical schedule. Last flown 2026-05-31.
88%
chance on time
- On time (history)
- 90%
- Cancelled
- 3.3%
- Avg arrival delay
- 8 min
- Arrived on time 90% of the time (29 flights, Jun 2025 to May 2026).
- Cancelled 3.3% of the time (1 of 30).
- Short track record (29 flights), so its score leans on the airline's record at this hour.
Limited track record · 29 flights
Find Southwest 3588 fares Opens this date on Aviasales#7 · Southwest 4103
6:40 PM → 8:05 PM1h 25m nonstop
Local times, typical schedule. Last flown 2026-04-06.
88%
chance on time
- On time (history)
- 96%
- Cancelled
- 0.0%
- Avg arrival delay
- 2 min
- Arrived on time 96% of the time (28 flights, Jun 2025 to May 2026).
- Short track record (28 flights), so its score leans on the airline's record at this hour.
Limited track record · 28 flights
Find Southwest 4103 fares Opens this date on Aviasales#8 · Southwest 3589
12:05 PM → 1:35 PM1h 30m nonstop
Local times, typical schedule. Last flown 2026-05-29. Same departure also flew as Southwest 4100; its record covers all of them.
88%
chance on time
- On time (history)
- 92%
- Cancelled
- 2.0%
- Avg arrival delay
- 3 min
- Arrived on time 92% of the time (50 flights, Jun 2025 to May 2026).
- Short track record (50 flights), so its score leans on the airline's record at this hour.
Limited track record · 50 flights
Find Southwest 3589 fares Opens this date on Aviasales#9 · Southwest 1199
8:00 AM → 9:25 AM1h 25m nonstop
Local times, typical schedule. Last flown 2026-04-06.
88%
chance on time
- On time (history)
- 89%
- Cancelled
- 3.6%
- Avg arrival delay
- 33 min
- Arrived on time 89% of the time (27 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 95% on time; 3 to 6 PM: 77%).
- Short track record (27 flights), so its score leans on the airline's record at this hour.
Limited track record · 27 flights
Find Southwest 1199 fares Opens this date on Aviasales#10 · Southwest 1089
4:35 PM → 6:05 PM1h 30m nonstop
Local times, typical schedule. Last flown 2026-05-30.
86%
chance on time
- On time (history)
- 90%
- Cancelled
- 0.0%
- Avg arrival delay
- 4 min
- Arrived on time 90% of the time (31 flights, Jun 2025 to May 2026).
- Never cancelled in 31 scheduled flights.
- Leaves in this route's least on-time window (3 to 6 PM: 77% on time; Before 9 AM: 95%).
- Short track record (31 flights), so its score leans on the airline's record at this hour.
Limited track record · 31 flights
Find Southwest 1089 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Southwest Airlines86%
2,310 flights · 86% on time as flown · 0.6% cancel
- Spirit Airlines84%
74 flights · 81% on time as flown · 0.4% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM95%
536 flights · avg delay 5 min
- 9 AM to noon90%
425 flights · avg delay 5 min
- Noon to 3 PM86%
426 flights · avg delay 7 min
- 3 to 6 PM77%
436 flights · avg delay 11 min
- 6 to 9 PM82%
564 flights · avg delay 8 min
Best day: Tuesday (91%). Worst: Friday (82%).
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