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.
BUR → DEN
Burbank to Denver: 2,254 nonstop flights a year
On time (12 months)
83%
Cancelled
0.6%
avg delay 13 min
Best time to leave
Before 9 AM
91% on time vs 60% 3 to 6 PM
Most reliable airline
United
84% chance on time
Lowest nonstop fare seen in the next two months: $116 (Southwest 864 on 2026-11-10). 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 1207
7:10 AM → 10:30 AM2h 20m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Southwest 2215; its record covers all of them.
92%
chance on time
- On time (history)
- 95%
- Cancelled
- 0.0%
- Avg arrival delay
- 3 min
- Arrived on time 95% of the time (61 flights, Jun 2025 to May 2026).
- Never cancelled in 62 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 91% on time; 3 to 6 PM: 60%).
Moderate track record · 61 flights
Find Southwest 1207 fares Opens this date on Aviasales#2 · Southwest 3199
9:15 AM → 12:35 PM2h 20m nonstop
Local times, typical schedule. Last flown 2026-05-29.
89%
chance on time
- On time (history)
- 96%
- Cancelled
- 0.0%
- Avg arrival delay
- 2 min
- Arrived on time 96% of the time (23 flights, Jun 2025 to May 2026).
- Short track record (23 flights), so its score leans on the airline's record at this hour.
Limited track record · 23 flights
Find Southwest 3199 fares Opens this date on Aviasales#3 · United 1191
9:00 AM → 12:27 PM2h 27m nonstop
Local times, typical schedule. Last flown 2026-05-31.
88%
chance on time
- On time (history)
- 88%
- Cancelled
- 0.3%
- Avg arrival delay
- 8 min
- Arrived on time 88% of the time (363 flights, Jun 2025 to May 2026).
Strong track record · 363 flights
Find United 1191 fares Opens this date on Aviasales#4 · Southwest 2045
9:55 AM → 1:15 PM2h 20m nonstop
Local times, typical schedule. Last flown 2026-05-27.
86%
chance on time
- On time (history)
- 88%
- Cancelled
- 0.0%
- Avg arrival delay
- 11 min
- Arrived on time 88% of the time (16 flights, Jun 2025 to May 2026).
- 71% of its delay minutes came from the plane arriving late from an earlier flight.
- Short track record (16 flights), so its score leans on the airline's record at this hour.
Limited track record · 16 flights
Find Southwest 2045 fares Opens this date on Aviasales#5 · Southwest 910
7:25 AM → 10:45 AM2h 20m nonstop
Local times, typical schedule. Last flown 2026-04-05.
85%
chance on time
- On time (history)
- 69%
- Cancelled
- 0.0%
- Avg arrival delay
- 33 min
- Arrived on time 69% of the time (13 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 91% on time; 3 to 6 PM: 60%).
- 81% of its delay minutes came from the plane arriving late from an earlier flight.
- Short track record (13 flights), so its score leans on the airline's record at this hour.
Limited track record · 13 flights
Find Southwest 910 fares Opens this date on Aviasales#6 · Southwest 1397
8:50 AM → 12:10 PM2h 20m nonstop
Local times, typical schedule. Last flown 2026-04-06.
83%
chance on time
- On time (history)
- 81%
- Cancelled
- 3.6%
- Avg arrival delay
- 15 min
- Arrived on time 81% of the time (27 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 91% on time; 3 to 6 PM: 60%).
- Short track record (27 flights), so its score leans on the airline's record at this hour.
Limited track record · 27 flights
Find Southwest 1397 fares Opens this date on Aviasales#7 · Southwest 2270
1:00 PM → 4:25 PM2h 25m nonstop
Local times, typical schedule. Last flown 2026-05-31.
83%
chance on time
- On time (history)
- 93%
- Cancelled
- 0.0%
- Avg arrival delay
- 2 min
- Arrived on time 93% of the time (15 flights, Jun 2025 to May 2026).
- Lands inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.
- Short track record (15 flights), so its score leans on the airline's record at this hour.
Limited track record · 15 flights
Find Southwest 2270 fares Opens this date on Aviasales#8 · United 387
6:31 PM → 9:59 PM2h 28m nonstop
Local times, typical schedule. Last flown 2026-05-31.
83%
chance on time
- On time (history)
- 88%
- Cancelled
- 0.0%
- Avg arrival delay
- 10 min
- Arrived on time 88% of the time (8 flights, Jun 2025 to May 2026).
- 99% of its delay minutes came from the plane arriving late from an earlier flight.
- Short track record (8 flights), so its score leans on the airline's record at this hour.
Limited track record · 8 flights
Find United 387 fares Opens this date on Aviasales#9 · Southwest 951
12:15 PM → 3:35 PM2h 20m nonstop
Local times, typical schedule. Last flown 2026-05-29.
81%
chance on time
- On time (history)
- 87%
- Cancelled
- 0.0%
- Avg arrival delay
- 5 min
- Arrived on time 87% of the time (23 flights, Jun 2025 to May 2026).
- Lands inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.
- Short track record (23 flights), so its score leans on the airline's record at this hour.
Limited track record · 23 flights
Find Southwest 951 fares Opens this date on Aviasales#10 · United 2187
1:05 PM → 4:35 PM2h 27m nonstop
Local times, typical schedule. Last flown 2026-05-31.
80%
chance on time
- On time (history)
- 82%
- Cancelled
- 0.0%
- Avg arrival delay
- 14 min
- Arrived on time 82% of the time (164 flights, Jun 2025 to May 2026).
- Never cancelled in 165 scheduled flights.
- Lands inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.
Moderate track record · 164 flights
Find United 2187 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- United Airlines84%
895 flights · 84% on time as flown · 0.5% cancel
- Southwest Airlines82%
1,306 flights · 82% on time as flown · 0.7% cancel
- Frontier Airlines80%
52 flights · 75% 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%
497 flights · avg delay 7 min
- 9 AM to noon88%
562 flights · avg delay 8 min
- Noon to 3 PM80%
843 flights · avg delay 17 min
- 3 to 6 PM60%
166 flights · avg delay 27 min
- 6 to 9 PM79%
186 flights · avg delay 13 min
Best day: Saturday (86%). Worst: Friday (81%).
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