Denver (DEN) to Tulsa (TUL): On-Time Performance
Data through May 2026
Denver (DEN) to Tulsa (TUL) effectively runs on two schedules. In October 2024, 88% of arrivals were on time; in July 2025 that fell to 59% — a 30-point seasonal swing. Across the full period the route averages 76% on-time against a national 78%. Morning departures also hold up better than evening ones (84% vs 69%), which matters most in the rough months.
- On-time
- 76%
- arrived <15 min late
- Avg delay
- 15 min
- completed flights
- Cancelled
- 0.7%
- Flights/day
- 6.6
- last 12 months
- Duration
- 1h 43m
- scheduled
- Distance
- 541 mi
Best airline from DEN to TUL
3 airlines flew this route regularly between 2024-06 and 2026-05.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| SkyWest Airlinesmost reliable | 83% | 12 min | 0.7% | 2,311 |
| United Airlines | 72% | 19 min | 0.8% | 618 |
| Southwest Airlines | 69% | 18 min | 0.7% | 1,840 |
Monthly on-time trend
Best time to fly from DEN to TUL
Aim for departures around 1 p.m. (87% on-time); avoid 7 p.m. departures (46%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 76% | 15 min |
| Tuesday | 78% | 15 min |
| Wednesday | 78% | 14 min |
| Thursday | 75% | 15 min |
| Friday | 75% | 18 min |
| Saturdaybest | 79% | 14 min |
| Sunday | 75% | 16 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft47%
- Airline operations31%
- National airspace system17%
- Weather5%
Frequently asked questions
- How often are flights from DEN to TUL delayed?
- 24% of DEN–TUL flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 15 minutes.
- Which airline is most reliable from DEN to TUL?
- SkyWest Airlines has the best on-time record on this route at 83%, based on 2,311 flights. 3 airlines flew DEN–TUL frequently enough to compare in this period.
- What is the best time of day to fly from DEN to TUL?
- Departures around 1 p.m. have the best record (87% on-time), while departures around 7 p.m. have the worst (46%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from DEN to TUL?
- The scheduled DEN–TUL flight time averages 1h 43m over 541 miles. Actual arrival times vary — flights on this route land 15+ minutes late 24% of the time.
- How often are DEN to TUL flights cancelled?
- 0.7% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, at or below the national rate of 1.6%.
- What is the worst month to fly from DEN to TUL?
- July 2025 was the roughest month in this dataset, with only 59% of arrivals on time. The best was October 2024 at 88%. If your dates are flexible, that 30-point gap is worth planning around.
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Based on 4,812 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.