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.
ATL → SJC
Atlanta to San Jose: 900 nonstop flights a year
On time (12 months)
86%
Cancelled
1.3%
avg delay 8 min
Best time to leave
Before 9 AM
93% on time vs 80% 3 to 6 PM
Most reliable airline
Delta
85% 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 · Delta 809
9:50 AM → 12:08 PM5h 11m nonstop
Local times, typical schedule. Last flown 2026-05-31.
88%
chance on time
- On time (history)
- 89%
- Cancelled
- 1.1%
- Avg arrival delay
- 6 min
- Arrived on time 89% of the time (360 flights, Jun 2025 to May 2026).
- Departs outside ATL's trouble window (1 PM to 7 PM, when 59% of its 96 ground stops and delay programs started).
Strong track record · 360 flights
Find Delta 809 fares Opens this date on Aviasales#2 · Delta 933
7:37 PM → 9:45 PM5h 01m nonstop
Local times, typical schedule. Last flown 2026-05-31.
84%
chance on time
- On time (history)
- 85%
- Cancelled
- 1.4%
- Avg arrival delay
- 8 min
- Arrived on time 85% of the time (289 flights, Jun 2025 to May 2026).
- Departs outside ATL's trouble window (1 PM to 7 PM, when 59% of its 96 ground stops and delay programs started).
Strong track record · 289 flights
Find Delta 933 fares Opens this date on Aviasales#3 · Delta 654
7:18 PM → 9:33 PM5h 15m nonstop
Local times, typical schedule. Last flown 2026-04-12.
83%
chance on time
- On time (history)
- 85%
- Cancelled
- 1.7%
- Avg arrival delay
- 9 min
- Arrived on time 85% of the time (59 flights, Jun 2025 to May 2026).
- Departs outside ATL's trouble window (1 PM to 7 PM, when 59% of its 96 ground stops and delay programs started).
- Short track record (59 flights), so its score leans on the airline's record at this hour.
Limited track record · 59 flights
Find Delta 654 fares Opens this date on Aviasales#4 · Delta 2136
4:59 PM → 7:02 PM5h 03m nonstop
Local times, typical schedule. Last flown 2026-05-31.
81%
chance on time
- On time (history)
- 80%
- Cancelled
- 1.2%
- Avg arrival delay
- 10 min
- Arrived on time 80% of the time (165 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (3 to 6 PM: 80% on time; Before 9 AM: 93%).
- Departs inside ATL's trouble window: 59% of its 96 ground stops and delay programs started between 1 PM and 7 PM.
Moderate track record · 165 flights
Find Delta 2136 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Delta Air Lines85%
900 flights · 86% on time as flown · 1.3% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM93%
43 flights · avg delay 4 min
- 9 AM to noon89%
322 flights · avg delay 7 min
- 3 to 6 PM80%
140 flights · avg delay 9 min
- 6 to 9 PM85%
395 flights · avg delay 9 min
Best day: Wednesday (91%). Worst: Sunday (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