Route on-time record

DEN to DAL: most on-time flights and the best time to fly

Denver (Denver International Airport) to Dallas (Dallas Love Field). 3,014 nonstop flights in Jun 2025 to May 2026, 71% arrived within 15 minutes and 1.2% were cancelled. The most reliable flight number was Southwest 3571 at 5:35 AM.

Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.

DEN → DAL

Denver to Dallas: 3,014 nonstop flights a year

On time (12 months)

71%

Cancelled

1.2%

avg delay 18 min

Best time to leave

Before 9 AM

93% on time vs 50% 6 to 9 PM

Most reliable airline

Southwest

70% chance on time

Check DEN to DAL fares

Lowest nonstop fare seen in the next two months: $90 (Southwest 1604 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 · Southwest 3571
5:35 AM → 8:30 AM1h 55m nonstop
Local times, typical schedule. Last flown 2026-05-31.
90%
chance on time
On time (history)
93%
Cancelled
0.0%
Avg arrival delay
6 min
- Arrived on time 93% of the time (55 flights, Jun 2025 to May 2026).
- Never cancelled in 55 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 93% on time; 6 to 9 PM: 50%).
- 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 · 55 flights
Find Southwest 3571 fares Opens this date on Aviasales
#2 · Southwest 1842
8:00 AM → 11:05 AM2h 05m nonstop
Local times, typical schedule. Last flown 2026-05-30.
89%
chance on time
On time (history)
97%
Cancelled
0.0%
Avg arrival delay
1 min
- Arrived on time 97% of the time (31 flights, Jun 2025 to May 2026).
- Never cancelled in 31 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 93% on time; 6 to 9 PM: 50%).
- 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 · 31 flights
Find Southwest 1842 fares Opens this date on Aviasales
#3 · Southwest 2854
5:05 AM → 8:10 AM2h 05m nonstop
Local times, typical schedule. Last flown 2026-04-06.
88%
chance on time
On time (history)
95%
Cancelled
0.0%
Avg arrival delay
4 min
- Arrived on time 95% of the time (20 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 93% on time; 6 to 9 PM: 50%).
- 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 (20 flights), so its score leans on the airline's record at this hour.
Limited track record · 20 flights
Find Southwest 2854 fares Opens this date on Aviasales
#4 · Southwest 3215
5:15 AM → 8:15 AM2h 00m nonstop
Local times, typical schedule. Last flown 2026-05-31.
88%
chance on time
On time (history)
100%
Cancelled
0.0%
Avg arrival delay
0 min
- Arrived on time 100% of the time (8 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 93% on time; 6 to 9 PM: 50%).
- 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 3215 fares Opens this date on Aviasales
#5 · Southwest 1653
7:50 AM → 10:50 AM2h 00m nonstop
Local times, typical schedule. Last flown 2026-04-06.
87%
chance on time
On time (history)
93%
Cancelled
0.0%
Avg arrival delay
3 min
- Arrived on time 93% of the time (28 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 93% on time; 6 to 9 PM: 50%).
- Departs outside DEN's trouble window (2 PM to 8 PM, when 79% of its 174 ground stops and delay programs started).
- Lands inside DAL's trouble window: 67% of its 42 ground stops and delay programs started between 10 AM and 4 PM.
Limited track record · 28 flights
Find Southwest 1653 fares Opens this date on Aviasales
#6 · Southwest 4632
6:15 AM → 9:20 AM2h 05m nonstop
Local times, typical schedule. Last flown 2026-04-01.
86%
chance on time
On time (history)
100%
Cancelled
0.0%
Avg arrival delay
0 min
- Arrived on time 100% of the time (8 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 93% on time; 6 to 9 PM: 50%).
- 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 4632 fares Opens this date on Aviasales
#7 · Southwest 1841
7:00 AM → 9:55 AM1h 55m nonstop
Local times, typical schedule. Last flown 2026-05-29.
86%
chance on time
On time (history)
87%
Cancelled
0.0%
Avg arrival delay
4 min
- Arrived on time 87% of the time (39 flights, Jun 2025 to May 2026).
- Never cancelled in 39 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 93% on time; 6 to 9 PM: 50%).
- 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 · 39 flights
Find Southwest 1841 fares Opens this date on Aviasales
#8 · Southwest 420
10:25 AM → 1:25 PM2h 00m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Southwest 352; its record covers all of them.
82%
chance on time
On time (history)
87%
Cancelled
1.4%
Avg arrival delay
6 min
- Arrived on time 87% of the time (69 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 DAL's trouble window: 67% of its 42 ground stops and delay programs started between 10 AM and 4 PM.
Moderate track record · 69 flights
Find Southwest 420 fares Opens this date on Aviasales
#9 · Southwest 1101
12:50 PM → 3:45 PM1h 55m nonstop
Local times, typical schedule. Last flown 2026-04-04.
75%
chance on time
On time (history)
85%
Cancelled
0.0%
Avg arrival delay
6 min
- Arrived on time 85% of the time (13 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 DAL's trouble window: 67% of its 42 ground stops and delay programs started between 10 AM and 4 PM.
- Short track record (13 flights), so its score leans on the airline's record at this hour.
Limited track record · 13 flights
Find Southwest 1101 fares Opens this date on Aviasales
#10 · Southwest 1183
1:05 PM → 4:00 PM1h 55m nonstop
Local times, typical schedule. Last flown 2026-04-06.
72%
chance on time
On time (history)
85%
Cancelled
13.3%
Avg arrival delay
22 min
- Arrived on time 85% of the time (13 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 (13 flights), so its score leans on the airline's record at this hour.
Limited track record · 13 flights
Find Southwest 1183 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

Southwest Airlines70%
3,014 flights · 71% on time as flown · 1.2% cancel

On time by departure time

All airlines, scheduled local departure, Jun 2025 to May 2026.

Before 9 AM93%
725 flights · avg delay 4 min
9 AM to noon79%
526 flights · avg delay 9 min
Noon to 3 PM70%
620 flights · avg delay 17 min
3 to 6 PM60%
438 flights · avg delay 24 min
6 to 9 PM50%
705 flights · avg delay 36 min

Best day: Wednesday (77%). Worst: Sunday (70%).

Smarter routing

Nearby airports that run more on time

DEN → DFW 73% chance on time
Denver International Airport to Dallas Fort Worth International Airport · 6,021 flights a year · 12 mi from your airports · yours: 70%
Rank flights Fares

On time by month

All airlines, Jun 2023 to May 2026. Several years per month, so one stormy season doesn't define a month. Travel-month estimates use this seasonal pattern.

What delays this route

Late-arriving aircraft48%
Airline (crew, maintenance, boarding)31%
Air traffic control and airport volume20%
Severe weather2%

Share of delay minutes by the cause airlines report to the US DOT.

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

DEN to DAL questions

What time of day is best to fly DEN to DAL?: Before 9 AM: 93% of flights arrived on time, against 50% for departures 6 to 9 PM. Later flights inherit delays from earlier ones, so the first departures of the day usually run best.
Which airline is most on time from DEN to DAL?: Southwest, with a season-adjusted 70% chance of operating and arriving on time over 3,014 flights. The adjustment compares each airline with what the route did in the months it flew, so a carrier that skipped a stormy month gets no free credit.
What is the worst month for delays on DEN to DAL?: June (62% on time); the best was February (80%), averaged over Jun 2023 to May 2026.
Is this a prediction for my flight?: No. These are historical odds from the US DOT on-time reports, FAA advisories and airport weather records. Check your flight status and the FAA delay board on the day you fly.

More routes from DEN

Live status: FAA delays and ground stops

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