Route on-time record
DEN to TUL: most on-time flights and the best time to fly
Denver (Denver International Airport) to Tulsa (Tulsa International Airport). 2,414 nonstop flights in Jun 2025 to May 2026, 76% arrived within 15 minutes and 0.9% were cancelled. The most reliable flight number was SkyWest 5315 at 10:00 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
DEN → TUL
Denver to Tulsa: 2,414 nonstop flights a year
On time (12 months)
76%
Cancelled
0.9%
avg delay 16 min
Best time to leave
Noon to 3 PM
87% on time vs 66% 3 to 6 PM
Most reliable airline
SkyWest
84% 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 · SkyWest 5315 · sold as United Express, Delta Connection, American Eagle or Alaska
10:00 AM → 12:57 PM1h 57m nonstop
Local times, typical schedule. Last flown 2026-05-31.
89%
chance on time
- On time (history)
- 89%
- Cancelled
- 0.3%
- Avg arrival delay
- 7 min
- Arrived on time 89% of the time (361 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 · 361 flights
Find 10:00 AM flight fares Opens this date on Aviasales#2 · SkyWest 5311 · sold as United Express, Delta Connection, American Eagle or Alaska
1:33 PM → 4:24 PM1h 51m nonstop
Local times, typical schedule. Last flown 2026-05-31.
88%
chance on time
- On time (history)
- 89%
- Cancelled
- 1.4%
- Avg arrival delay
- 8 min
- Arrived on time 89% of the time (356 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Noon to 3 PM: 87% on time; 3 to 6 PM: 66%).
- 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 · 356 flights
Find 1:33 PM flight fares Opens this date on Aviasales#3 · SkyWest 5850 · sold as United Express, Delta Connection, American Eagle or Alaska
3:35 PM → 6:24 PM1h 49m nonstop
Local times, typical schedule. Last flown 2026-05-20.
82%
chance on time
- On time (history)
- 80%
- Cancelled
- 0.0%
- Avg arrival delay
- 8 min
- Arrived on time 80% of the time (15 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (3 to 6 PM: 66% on time; Noon to 3 PM: 87%).
- 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 (15 flights), so its score leans on the airline's record at this hour.
Limited track record · 15 flights
Find 3:35 PM flight fares Opens this date on Aviasales#4 · SkyWest 4712 · sold as United Express, Delta Connection, American Eagle or Alaska
8:55 PM → 11:44 PM1h 49m nonstop
Local times, typical schedule. Last flown 2026-05-31.
81%
chance on time
- On time (history)
- 85%
- Cancelled
- 1.4%
- Avg arrival delay
- 13 min
- Arrived on time 85% of the time (143 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).
Moderate track record · 143 flights
Find 8:55 PM flight fares Opens this date on Aviasales#5 · United 1937
5:42 PM → 8:25 PM1h 43m nonstop
Local times, typical schedule. Last flown 2026-05-31.
75%
chance on time
- On time (history)
- 77%
- Cancelled
- 1.2%
- Avg arrival delay
- 19 min
- Arrived on time 77% of the time (246 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (3 to 6 PM: 66% on time; Noon to 3 PM: 87%).
- Departs inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.
- 62% of its delay minutes came from the plane arriving late from an earlier flight.
Strong track record · 246 flights
Find United 1937 fares Opens this date on Aviasales#6 · Southwest 1758
1:25 PM → 4:00 PM1h 35m nonstop
Local times, typical schedule. Last flown 2026-05-29. Same departure also flew as Southwest 2446; its record covers all of them.
69%
chance on time
- On time (history)
- 68%
- Cancelled
- 0.0%
- Avg arrival delay
- 22 min
- Arrived on time 68% of the time (56 flights, Jun 2025 to May 2026).
- Never cancelled in 56 scheduled flights.
- Leaves in this route's most on-time window (Noon to 3 PM: 87% on time; 3 to 6 PM: 66%).
- 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 · 56 flights
Find Southwest 1758 fares Opens this date on Aviasales#7 · Frontier 1588
4:59 PM → 7:35 PM1h 36m nonstop
Local times, typical schedule. Last flown 2026-04-12.
68%
chance on time
- On time (history)
- 77%
- Cancelled
- 0.0%
- Avg arrival delay
- 18 min
- Arrived on time 77% of the time (43 flights, Jun 2025 to May 2026).
- Never cancelled in 43 scheduled flights.
- Leaves in this route's least on-time window (3 to 6 PM: 66% on time; Noon to 3 PM: 87%).
- Departs inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.
Limited track record · 43 flights
Find Frontier 1588 fares Opens this date on Aviasales#8 · Southwest 3630
11:05 AM → 1:40 PM1h 35m nonstop
Local times, typical schedule. Last flown 2026-05-31.
67%
chance on time
- On time (history)
- 74%
- Cancelled
- 0.0%
- Avg arrival delay
- 8 min
- Arrived on time 74% of the time (31 flights, Jun 2025 to May 2026).
- Never cancelled in 31 scheduled flights.
- 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 (31 flights), so its score leans on the airline's record at this hour.
Limited track record · 31 flights
Find Southwest 3630 fares Opens this date on Aviasales#9 · Southwest 2784
8:05 PM → 10:45 PM1h 40m nonstop
Local times, typical schedule. Last flown 2026-05-31.
59%
chance on time
- On time (history)
- 61%
- Cancelled
- 0.0%
- Avg arrival delay
- 20 min
- Arrived on time 61% of the time (54 flights, Jun 2025 to May 2026).
- Never cancelled in 54 scheduled flights.
- Departs outside DEN's trouble window (2 PM to 8 PM, when 79% of its 174 ground stops and delay programs started).
- 54% of its delay minutes came from the plane arriving late from an earlier flight.
Limited track record · 54 flights
Find Southwest 2784 fares Opens this date on Aviasales#10 · Southwest 2828
7:35 PM → 10:10 PM1h 35m nonstop
Local times, typical schedule. Last flown 2026-04-06.
47%
chance on time
- On time (history)
- 52%
- Cancelled
- 0.0%
- Avg arrival delay
- 33 min
- Arrived on time 52% of the time (33 flights, Jun 2025 to May 2026).
- Never cancelled in 33 scheduled flights.
- Departs inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.
- 60% of its delay minutes came from the plane arriving late from an earlier flight.
Limited track record · 33 flights
Find Southwest 2828 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)84%
1,109 flights · 85% on time as flown · 0.7% cancel
- United Airlines74%
366 flights · 75% on time as flown · 0.8% cancel
- Frontier Airlines74%
43 flights · 77% on time as flown · 0.7% cancel
- Southwest Airlines65%
896 flights · 64% on time as flown · 1.1% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- 9 AM to noon84%
652 flights · avg delay 9 min
- Noon to 3 PM87%
440 flights · avg delay 10 min
- 3 to 6 PM66%
538 flights · avg delay 21 min
- 6 to 9 PM68%
759 flights · avg delay 23 min
Best day: Tuesday (79%). Worst: Friday (72%).
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 volume15%
- Severe weather5%
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 TUL questions
- What time of day is best to fly DEN to TUL?
- Noon to 3 PM: 87% of flights arrived on time, against 66% for departures 3 to 6 PM.
- Which airline is most on time from DEN to TUL?
- SkyWest, with a season-adjusted 84% chance of operating and arriving on time over 1,109 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 TUL?
- June (66% on time); the best was November (82%), 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
- TUL to DEN (return)
- DEN to PHX 75%
- DEN to SLC 77%
- DEN to LAX 79%
- DEN to LAS 75%
- DEN to SEA 73%
- DEN to ORD 70%
- DEN to DFW 75%
- DEN to SAN 76%
- DEN to MSP 78%
- DEN to ATL 80%
- DEN to SFO 68%
- DEN to AUS 76%
Live status: FAA delays and ground stops