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.
DEN → SJC
Denver to San Jose: 2,599 nonstop flights a year
On time (12 months)
75%
Cancelled
0.4%
avg delay 16 min
Best time to leave
Before 9 AM
92% on time vs 52% after 9 PM
Most reliable airline
United
80% 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 1173
8:45 AM → 10:20 AM2h 35m nonstop
Local times, typical schedule. Last flown 2026-05-30. Same departure also flew as Southwest 1584; its record covers all of them.
90%
chance on time
- On time (history)
- 93%
- Cancelled
- 0.0%
- Avg arrival delay
- 6 min
- Arrived on time 93% of the time (41 flights, Jun 2025 to May 2026).
- Never cancelled in 41 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 92% on time; After 9 PM: 52%).
- Departs outside DEN's trouble window (2 PM to 8 PM, when 79% of its 174 ground stops and delay programs started).
Limited track record · 41 flights
Find Southwest 1173 fares Opens this date on Aviasales#2 · United 670
11:50 AM → 1:35 PM2h 45m nonstop
Local times, typical schedule. Last flown 2026-05-31.
87%
chance on time
- On time (history)
- 89%
- Cancelled
- 0.0%
- Avg arrival delay
- 7 min
- Arrived on time 89% of the time (147 flights, Jun 2025 to May 2026).
- Never cancelled in 147 scheduled flights.
- Departs outside DEN's trouble window (2 PM to 8 PM, when 79% of its 174 ground stops and delay programs started).
Moderate track record · 147 flights
Find United 670 fares Opens this date on Aviasales#3 · Southwest 2073
8:25 AM → 10:00 AM2h 35m nonstop
Local times, typical schedule. Last flown 2026-05-31.
87%
chance on time
- On time (history)
- 85%
- Cancelled
- 0.0%
- Avg arrival delay
- 5 min
- Arrived on time 85% of the time (47 flights, Jun 2025 to May 2026).
- Never cancelled in 47 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 92% on time; After 9 PM: 52%).
- Departs outside DEN's trouble window (2 PM to 8 PM, when 79% of its 174 ground stops and delay programs started).
Limited track record · 47 flights
Find Southwest 2073 fares Opens this date on Aviasales#4 · United 1883
3:40 PM → 5:23 PM2h 43m nonstop
Local times, typical schedule. Last flown 2026-05-31.
83%
chance on time
- On time (history)
- 84%
- Cancelled
- 0.0%
- Avg arrival delay
- 9 min
- Arrived on time 84% of the time (25 flights, Jun 2025 to May 2026).
- Departs inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.
- Short track record (25 flights), so its score leans on the airline's record at this hour.
Limited track record · 25 flights
Find United 1883 fares Opens this date on Aviasales#5 · United 2745
7:25 PM → 9:16 PM2h 43m nonstop
Local times, typical schedule. Last flown 2026-05-31.
83%
chance on time
- On time (history)
- 85%
- Cancelled
- 0.0%
- Avg arrival delay
- 14 min
- Arrived on time 85% of the time (165 flights, Jun 2025 to May 2026).
- Never cancelled in 165 scheduled flights.
- Departs inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.
Moderate track record · 165 flights
Find United 2745 fares Opens this date on Aviasales#6 · Southwest 3847
1:00 PM → 2:35 PM2h 35m nonstop
Local times, typical schedule. Last flown 2026-05-31.
71%
chance on time
- On time (history)
- 75%
- Cancelled
- 0.0%
- Avg arrival delay
- 7 min
- Arrived on time 75% of the time (8 flights, Jun 2025 to May 2026).
- Departs outside DEN's trouble window (2 PM to 8 PM, when 79% of its 174 ground stops and delay programs started).
- Short track record (8 flights), so its score leans on the airline's record at this hour.
Limited track record · 8 flights
Find Southwest 3847 fares Opens this date on Aviasales#7 · Southwest 3168
3:50 PM → 5:25 PM2h 35m nonstop
Local times, typical schedule. Last flown 2026-05-31.
66%
chance on time
- On time (history)
- 57%
- Cancelled
- 0.0%
- Avg arrival delay
- 24 min
- Arrived on time 57% of the time (54 flights, Jun 2025 to May 2026).
- Never cancelled in 54 scheduled flights.
- Departs inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.
- Short track record (54 flights), so its score leans on the airline's record at this hour.
Limited track record · 54 flights
Find Southwest 3168 fares Opens this date on Aviasales#8 · Southwest 2769
1:45 PM → 3:25 PM2h 40m nonstop
Local times, typical schedule. Last flown 2026-04-06.
66%
chance on time
- On time (history)
- 61%
- Cancelled
- 0.0%
- Avg arrival delay
- 16 min
- Arrived on time 61% of the time (28 flights, Jun 2025 to May 2026).
- Departs outside DEN's trouble window (2 PM to 8 PM, when 79% of its 174 ground stops and delay programs started).
- Short track record (28 flights), so its score leans on the airline's record at this hour.
Limited track record · 28 flights
Find Southwest 2769 fares Opens this date on Aviasales#9 · Southwest 2819
6:45 PM → 8:25 PM2h 40m nonstop
Local times, typical schedule. Last flown 2026-04-06.
56%
chance on time
- On time (history)
- 36%
- Cancelled
- 6.7%
- Avg arrival delay
- 29 min
- Arrived on time 36% of the time (14 flights, Jun 2025 to May 2026).
- Departs inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.
- 72% of its delay minutes came from the plane arriving late from an earlier flight.
- Short track record (14 flights), so its score leans on the airline's record at this hour.
Limited track record · 14 flights
Find Southwest 2819 fares Opens this date on Aviasales#10 · Southwest 2074
1:10 PM → 2:45 PM2h 35m nonstop
Local times, typical schedule. Last flown 2026-05-29.
53%
chance on time
- On time (history)
- 17%
- Cancelled
- 0.0%
- Avg arrival delay
- 26 min
- Arrived on time 17% of the time (23 flights, Jun 2025 to May 2026).
- Departs outside DEN's trouble window (2 PM to 8 PM, when 79% of its 174 ground stops and delay programs started).
- Short track record (23 flights), so its score leans on the airline's record at this hour.
Limited track record · 23 flights
Find Southwest 2074 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- United Airlines80%
1,004 flights · 80% on time as flown · 0.1% cancel
- Frontier Airlines78%
63 flights · 81% on time as flown · 0.3% cancel
- Southwest Airlines71%
1,531 flights · 71% on time as flown · 0.6% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM92%
453 flights · avg delay 4 min
- 9 AM to noon80%
484 flights · avg delay 11 min
- Noon to 3 PM78%
352 flights · avg delay 11 min
- 3 to 6 PM74%
432 flights · avg delay 18 min
- 6 to 9 PM63%
771 flights · avg delay 27 min
- After 9 PM52%
107 flights · avg delay 29 min
Best day: Wednesday (80%). Worst: Saturday (74%).
Smarter routing
Nearby airports that run more on time
DEN → MRY 80% chance on time
Denver International Airport to Monterey Regional Airport · 727 flights a year · 54 mi from your airports · yours: 74%
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