Tulsa (TUL) to Denver (DEN): On-Time Performance
Data through July 2026
Tulsa (TUL) to Denver (DEN) effectively runs on two schedules. In November 2024, 92% of arrivals were on time; in July 2025 that fell to 65% — a 27-point seasonal swing. Across the full period the route averages 81% on-time against a national 78%. Morning departures also hold up better than evening ones (86% vs 70%), which matters most in the rough months.
- On-time
- 81%
- arrived <15 min late
- Avg delay
- 14 min
- completed flights
- Cancelled
- 0.8%
- Flights/day
- 6.7
- last 12 months
- Duration
- 1h 56m
- scheduled
- Distance
- 541 mi
Best airline from TUL to DEN
3 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Southwest Airlinesmost reliable | 83% | 11 min | 0.8% | 1,934 |
| SkyWest Airlines | 80% | 17 min | 0.7% | 2,443 |
| United Airlines | 78% | 12 min | 1.1% | 650 |
Monthly on-time trend
Best time to fly from TUL to DEN
Aim for departures around 7 a.m. (94% on-time); avoid 5 p.m. departures (67%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 81% | 15 min |
| Tuesday | 79% | 17 min |
| Wednesday | 78% | 17 min |
| Thursday | 81% | 13 min |
| Fridaybest | 83% | 13 min |
| Saturday | 82% | 13 min |
| Sunday | 81% | 14 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft26%
- Airline operations31%
- National airspace system33%
- Weather10%
Frequently asked questions
- How often are flights from TUL to DEN delayed?
- 20% of TUL–DEN flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 14 minutes.
- Which airline is most reliable from TUL to DEN?
- Southwest Airlines has the best on-time record on this route at 83%, based on 1,934 flights. 3 airlines flew TUL–DEN frequently enough to compare in this period.
- What is the best time of day to fly from TUL to DEN?
- Departures around 7 a.m. have the best record (94% on-time), while departures around 5 p.m. have the worst (67%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from TUL to DEN?
- The scheduled TUL–DEN flight time averages 1h 56m over 541 miles. Actual arrival times vary — flights on this route land 15+ minutes late 20% of the time.
- How often are TUL to DEN flights cancelled?
- 0.8% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from TUL to DEN?
- July 2025 was the roughest month in this dataset, with only 65% of arrivals on time. The best was November 2024 at 92%. If your dates are flexible, that 27-point gap is worth planning around.
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Based on 5,069 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.