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 → SNA
Denver to Santa Ana: 3,708 nonstop flights a year
On time (12 months)
80%
Cancelled
0.4%
avg delay 11 min
Best time to leave
Before 9 AM
91% on time vs 72% 6 to 9 PM
Most reliable airline
Frontier
85% chance on time
Lowest nonstop fare seen in the next two months: $48 (Frontier 4371 on 2026-11-26). 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 · United 2666
8:10 AM → 9:44 AM2h 34m nonstop
Local times, typical schedule. Last flown 2026-05-31.
92%
chance on time
- On time (history)
- 93%
- Cancelled
- 0.0%
- Avg arrival delay
- 4 min
- Arrived on time 93% of the time (325 flights, Jun 2025 to May 2026).
- Never cancelled in 327 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 91% on time; 6 to 9 PM: 72%).
- Departs outside DEN's trouble window (2 PM to 8 PM, when 79% of its 174 ground stops and delay programs started).
Strong track record · 325 flights
Find United 2666 fares Opens this date on Aviasales#2 · Southwest 3852
8:30 AM → 9:55 AM2h 25m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Southwest 3846; its record covers all of them.
90%
chance on time
- On time (history)
- 94%
- Cancelled
- 0.0%
- Avg arrival delay
- 3 min
- Arrived on time 94% of the time (78 flights, Jun 2025 to May 2026).
- Never cancelled in 78 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 91% on time; 6 to 9 PM: 72%).
- 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 · 78 flights
Find Southwest 3852 fares Opens this date on Aviasales#3 · United 2657
3:50 PM → 5:23 PM2h 33m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as United 422; its record covers all of them.
89%
chance on time
- On time (history)
- 91%
- Cancelled
- 0.0%
- Avg arrival delay
- 7 min
- Arrived on time 91% of the time (88 flights, Jun 2025 to May 2026).
- Never cancelled in 88 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 · 88 flights
Find United 2657 fares Opens this date on Aviasales#4 · Frontier 4371
7:40 AM → 9:09 AM2h 36m nonstop
Local times, typical schedule. Last flown 2026-05-31.
86%
chance on time
- On time (history)
- 86%
- Cancelled
- 0.3%
- Avg arrival delay
- 9 min
- Arrived on time 86% of the time (302 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 91% on time; 6 to 9 PM: 72%).
- Departs outside DEN's trouble window (2 PM to 8 PM, when 79% of its 174 ground stops and delay programs started).
Strong track record · 302 flights
Find Frontier 4371 fares Opens this date on Aviasales#5 · United 1320
11:42 AM → 1:18 PM2h 36m nonstop
Local times, typical schedule. Last flown 2026-05-31.
85%
chance on time
- On time (history)
- 86%
- Cancelled
- 0.3%
- Avg arrival delay
- 7 min
- Arrived on time 86% of the time (362 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).
Strong track record · 362 flights
Find United 1320 fares Opens this date on Aviasales#6 · United 725
8:25 PM → 9:58 PM2h 33m nonstop
Local times, typical schedule. Last flown 2026-05-31.
85%
chance on time
- On time (history)
- 90%
- Cancelled
- 2.5%
- Avg arrival delay
- 4 min
- Arrived on time 90% of the time (77 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (6 to 9 PM: 72% on time; Before 9 AM: 91%).
- 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 · 77 flights
Find United 725 fares Opens this date on Aviasales#7 · United 1707
1:25 PM → 2:56 PM2h 31m nonstop
Local times, typical schedule. Last flown 2026-05-31.
84%
chance on time
- On time (history)
- 82%
- Cancelled
- 0.0%
- Avg arrival delay
- 7 min
- Arrived on time 82% of the time (11 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 (11 flights), so its score leans on the airline's record at this hour.
Limited track record · 11 flights
Find United 1707 fares Opens this date on Aviasales#8 · Southwest 2762
9:50 AM → 11:20 AM2h 30m nonstop
Local times, typical schedule. Last flown 2026-05-29.
79%
chance on time
- On time (history)
- 83%
- Cancelled
- 0.0%
- Avg arrival delay
- 9 min
- Arrived on time 83% 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 2762 fares Opens this date on Aviasales#9 · United 1704
7:15 PM → 8:47 PM2h 32m nonstop
Local times, typical schedule. Last flown 2026-05-31.
78%
chance on time
- On time (history)
- 80%
- Cancelled
- 0.0%
- Avg arrival delay
- 10 min
- Arrived on time 80% of the time (88 flights, Jun 2025 to May 2026).
- Never cancelled in 88 scheduled flights.
- Leaves in this route's least on-time window (6 to 9 PM: 72% on time; Before 9 AM: 91%).
- 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 · 88 flights
Find United 1704 fares Opens this date on Aviasales#10 · Southwest 1697
10:05 AM → 11:45 AM2h 40m nonstop
Local times, typical schedule. Last flown 2026-04-06.
77%
chance on time
- On time (history)
- 87%
- Cancelled
- 0.0%
- Avg arrival delay
- 20 min
- Arrived on time 87% of the time (15 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 (15 flights), so its score leans on the airline's record at this hour.
Limited track record · 15 flights
Find Southwest 1697 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Frontier Airlines85%
303 flights · 86% on time as flown · 0.3% cancel
- United Airlines84%
1,870 flights · 85% on time as flown · 0.3% cancel
- Southwest Airlines74%
1,535 flights · 74% on time as flown · 0.4% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM91%
701 flights · avg delay 5 min
- 9 AM to noon84%
892 flights · avg delay 9 min
- Noon to 3 PM80%
509 flights · avg delay 10 min
- 3 to 6 PM76%
552 flights · avg delay 14 min
- 6 to 9 PM72%
1,054 flights · avg delay 14 min
Best day: Wednesday (83%). Worst: Friday (78%).
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