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.
SJC → SAN
San Jose to San Diego: 4,990 nonstop flights a year
On time (12 months)
74%
Cancelled
1.1%
avg delay 14 min
Best time to leave
Before 9 AM
89% on time vs 59% 6 to 9 PM
Most reliable airline
SkyWest
77% chance on time
Lowest nonstop fare seen in the next two months: $67 (Alaska 466 on 2026-11-03). 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 4138
6:55 AM → 8:20 AM1h 25m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Southwest 1599; its record covers all of them.
92%
chance on time
- On time (history)
- 97%
- Cancelled
- 2.7%
- Avg arrival delay
- 2 min
- Arrived on time 97% of the time (72 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 89% on time; 6 to 9 PM: 59%).
- Lands inside SAN's trouble window: 66% of its 164 ground stops and delay programs started between 6 AM and noon.
Moderate track record · 72 flights
Find Southwest 4138 fares Opens this date on Aviasales#2 · Alaska 1371
7:06 AM → 8:39 AM1h 33m nonstop
Local times, typical schedule. Last flown 2026-05-31.
90%
chance on time
- On time (history)
- 100%
- Cancelled
- 0.0%
- Avg arrival delay
- 0 min
- Arrived on time 100% of the time (19 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 89% on time; 6 to 9 PM: 59%).
- Lands inside SAN's trouble window: 66% of its 164 ground stops and delay programs started between 6 AM and noon.
- Short track record (19 flights), so its score leans on the route's record at this hour.
Limited track record · 19 flights
Find Alaska 1371 fares Opens this date on Aviasales#3 · Southwest 1430
9:25 AM → 10:50 AM1h 25m nonstop
Local times, typical schedule. Last flown 2026-04-06.
88%
chance on time
- On time (history)
- 96%
- Cancelled
- 3.6%
- Avg arrival delay
- 3 min
- Arrived on time 96% of the time (27 flights, Jun 2025 to May 2026).
- Lands inside SAN's trouble window: 66% of its 164 ground stops and delay programs started between 6 AM and noon.
- Short track record (27 flights), so its score leans on the airline's record at this hour.
Limited track record · 27 flights
Find Southwest 1430 fares Opens this date on Aviasales#4 · Southwest 4065
9:10 AM → 10:35 AM1h 25m nonstop
Local times, typical schedule. Last flown 2026-05-30.
87%
chance on time
- On time (history)
- 90%
- Cancelled
- 0.0%
- Avg arrival delay
- 6 min
- Arrived on time 90% of the time (31 flights, Jun 2025 to May 2026).
- Never cancelled in 31 scheduled flights.
- Lands inside SAN's trouble window: 66% of its 164 ground stops and delay programs started between 6 AM and noon.
- Short track record (31 flights), so its score leans on the airline's record at this hour.
Limited track record · 31 flights
Find Southwest 4065 fares Opens this date on Aviasales#5 · SkyWest 3458 · sold as United Express, Delta Connection, American Eagle or Alaska
7:00 AM → 8:32 AM1h 32m nonstop
Local times, typical schedule. Last flown 2026-05-12.
87%
chance on time
- On time (history)
- 88%
- Cancelled
- 1.7%
- Avg arrival delay
- 11 min
- Arrived on time 88% of the time (292 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 89% on time; 6 to 9 PM: 59%).
- Lands inside SAN's trouble window: 66% of its 164 ground stops and delay programs started between 6 AM and noon.
Strong track record · 292 flights
Find 7:00 AM flight fares Opens this date on Aviasales#6 · Southwest 1582
7:25 AM → 8:50 AM1h 25m nonstop
Local times, typical schedule. Last flown 2026-05-30.
86%
chance on time
- On time (history)
- 88%
- Cancelled
- 0.0%
- Avg arrival delay
- 5 min
- Arrived on time 88% of the time (8 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 89% on time; 6 to 9 PM: 59%).
- Lands inside SAN's trouble window: 66% of its 164 ground stops and delay programs started between 6 AM and noon.
- Short track record (8 flights), so its score leans on the airline's record at this hour.
Limited track record · 8 flights
Find Southwest 1582 fares Opens this date on Aviasales#7 · Southwest 1933
8:35 AM → 10:00 AM1h 25m nonstop
Local times, typical schedule. Last flown 2026-04-01.
83%
chance on time
- On time (history)
- 100%
- Cancelled
- 0.0%
- Avg arrival delay
- 1 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: 89% on time; 6 to 9 PM: 59%).
- Lands inside SAN's trouble window: 66% of its 164 ground stops and delay programs started between 6 AM and noon.
- Short track record (8 flights), so its score leans on the airline's record at this hour.
Limited track record · 8 flights
Find Southwest 1933 fares Opens this date on Aviasales#8 · Southwest 887
8:00 AM → 9:25 AM1h 25m nonstop
Local times, typical schedule. Last flown 2026-04-06.
80%
chance on time
- On time (history)
- 85%
- Cancelled
- 0.0%
- Avg arrival delay
- 14 min
- Arrived on time 85% of the time (20 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 89% on time; 6 to 9 PM: 59%).
- Lands inside SAN's trouble window: 66% of its 164 ground stops and delay programs started between 6 AM and noon.
- Short track record (20 flights), so its score leans on the airline's record at this hour.
Limited track record · 20 flights
Find Southwest 887 fares Opens this date on Aviasales#9 · Southwest 3459
12:00 PM → 1:20 PM1h 20m nonstop
Local times, typical schedule. Last flown 2026-04-06.
80%
chance on time
- On time (history)
- 89%
- Cancelled
- 0.0%
- Avg arrival delay
- 5 min
- Arrived on time 89% 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 3459 fares Opens this date on Aviasales#10 · Southwest 2291
12:45 PM → 2:05 PM1h 20m nonstop
Local times, typical schedule. Last flown 2026-04-06.
78%
chance on time
- On time (history)
- 86%
- Cancelled
- 0.0%
- Avg arrival delay
- 9 min
- Arrived on time 86% 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 2291 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)77%
1,182 flights · 78% on time as flown · 1.2% cancel
- Southwest Airlines72%
3,746 flights · 73% on time as flown · 1.0% cancel
- Spirit Airlines71%
43 flights · 70% on time as flown · 0.8% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM89%
1,114 flights · avg delay 7 min
- 9 AM to noon76%
1,086 flights · avg delay 12 min
- Noon to 3 PM74%
878 flights · avg delay 13 min
- 3 to 6 PM68%
981 flights · avg delay 16 min
- 6 to 9 PM59%
831 flights · avg delay 22 min
Best day: Tuesday (86%). Worst: Friday (68%).
Smarter routing
Nearby airports that run more on time
MRY → SAN 78% chance on time
Monterey Regional Airport to San Diego International Airport · 557 flights a year · 54 mi from your airports · yours: 73%
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