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 → DFW
Denver to Dallas-Fort Worth: 6,021 nonstop flights a year
On time (12 months)
75%
Cancelled
2.0%
avg delay 22 min
Best time to leave
Before 9 AM
86% on time vs 58% 6 to 9 PM
Most reliable airline
United
76% chance on time
Lowest nonstop fare seen in the next two months: $40 (Frontier 2632 on 2026-11-04). 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 · Frontier 1324
6:00 AM → 8:07 AM2h 13m nonstop
Local times, typical schedule. Last flown 2026-05-31.
89%
chance on time
- On time (history)
- 89%
- Cancelled
- 0.3%
- Avg arrival delay
- 6 min
- Arrived on time 89% of the time (319 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 86% on time; 6 to 9 PM: 58%).
- 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 · 319 flights
Find Frontier 1324 fares Opens this date on Aviasales#2 · American 2612
5:30 AM → 8:35 AM2h 05m nonstop
Local times, typical schedule. Last flown 2026-05-31.
88%
chance on time
- On time (history)
- 91%
- Cancelled
- 1.8%
- Avg arrival delay
- 5 min
- Arrived on time 91% of the time (222 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 86% on time; 6 to 9 PM: 58%).
- 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 · 222 flights
Find American 2612 fares Opens this date on Aviasales#3 · United 2160
7:45 AM → 10:52 AM2h 07m nonstop
Local times, typical schedule. Last flown 2026-05-31.
86%
chance on time
- On time (history)
- 86%
- Cancelled
- 0.0%
- Avg arrival delay
- 7 min
- Arrived on time 86% of the time (196 flights, Jun 2025 to May 2026).
- Never cancelled in 196 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 86% on time; 6 to 9 PM: 58%).
- 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 · 196 flights
Find United 2160 fares Opens this date on Aviasales#4 · American 2078
6:23 AM → 9:29 AM2h 06m nonstop
Local times, typical schedule. Last flown 2026-05-31.
86%
chance on time
- On time (history)
- 87%
- Cancelled
- 2.5%
- Avg arrival delay
- 8 min
- Arrived on time 87% of the time (118 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 86% on time; 6 to 9 PM: 58%).
- 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 · 118 flights
Find American 2078 fares Opens this date on Aviasales#5 · American 3285
6:00 AM → 9:12 AM2h 12m nonstop
Local times, typical schedule. Last flown 2026-04-06.
85%
chance on time
- On time (history)
- 89%
- Cancelled
- 2.1%
- Avg arrival delay
- 9 min
- Arrived on time 89% of the time (238 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 86% on time; 6 to 9 PM: 58%).
- 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 · 238 flights
Find American 3285 fares Opens this date on Aviasales#6 · American 1090
7:13 AM → 10:22 AM2h 09m nonstop
Local times, typical schedule. Last flown 2026-05-31.
84%
chance on time
- On time (history)
- 81%
- Cancelled
- 1.4%
- Avg arrival delay
- 15 min
- Arrived on time 81% of the time (72 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 86% on time; 6 to 9 PM: 58%).
- 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 · 72 flights
Find American 1090 fares Opens this date on Aviasales#7 · United 1350
9:40 AM → 12:41 PM2h 06m nonstop
Local times, typical schedule. Last flown 2026-05-31.
83%
chance on time
- On time (history)
- 83%
- Cancelled
- 0.6%
- Avg arrival delay
- 11 min
- Arrived on time 83% of the time (357 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 · 357 flights
Find United 1350 fares Opens this date on Aviasales#8 · American 1406
5:00 AM → 8:07 AM2h 07m nonstop
Local times, typical schedule. Last flown 2026-04-06.
83%
chance on time
- On time (history)
- 88%
- Cancelled
- 5.6%
- Avg arrival delay
- 5 min
- Arrived on time 88% of the time (17 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 86% on time; 6 to 9 PM: 58%).
- 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 (17 flights), so its score leans on the airline's record at this hour.
Limited track record · 17 flights
Find American 1406 fares Opens this date on Aviasales#9 · American 1523
9:18 AM → 12:21 PM2h 03m nonstop
Local times, typical schedule. Last flown 2026-05-31.
80%
chance on time
- On time (history)
- 84%
- Cancelled
- 3.1%
- Avg arrival delay
- 20 min
- Arrived on time 84% of the time (277 flights, Jun 2025 to May 2026).
- Cancelled 3.1% of the time (9 of 288).
- 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 · 277 flights
Find American 1523 fares Opens this date on Aviasales#10 · United 578
1:55 PM → 5:03 PM2h 07m nonstop
Local times, typical schedule. Last flown 2026-05-31.
79%
chance on time
- On time (history)
- 81%
- Cancelled
- 1.3%
- Avg arrival delay
- 16 min
- Arrived on time 81% of the time (218 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).
- Lands inside DFW's trouble window: 53% of its 139 ground stops and delay programs started between 1 PM and 7 PM.
Strong track record · 218 flights
Find United 578 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- United Airlines76%
1,920 flights · 76% on time as flown · 0.9% cancel
- Frontier Airlines74%
1,082 flights · 75% on time as flown · 1.1% cancel
- American Airlines71%
2,972 flights · 73% on time as flown · 3.1% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM86%
1,899 flights · avg delay 13 min
- 9 AM to noon81%
1,072 flights · avg delay 18 min
- Noon to 3 PM72%
1,127 flights · avg delay 25 min
- 3 to 6 PM65%
1,070 flights · avg delay 30 min
- 6 to 9 PM58%
621 flights · avg delay 38 min
- After 9 PM64%
232 flights · avg delay 30 min
Best day: Tuesday (77%). Worst: Saturday (72%).
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