DEN to TUL flight delays & on-time performance
Nonstop flights from Denver International Airport to Tulsa International Airport · 541 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at DEN or TUL right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Denver (DEN) to Tulsa (TUL) arrived on time 77% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 0.9% were cancelled, and 7% arrived an hour or more late.
- SkyWest Airlines was the most punctual airline here (86% on time); Southwest Airlines was the least (66%).
- Departures scheduled around 9am did best (87% on time); around 7pm did worst (44%).
- Tuesday was the most reliable day to fly (81% on time) and Thursday the least (71%).
- The largest source of delay minutes was late-arriving aircraft (52%).
Which airline is most on time from DEN to TUL?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| SkyWest AirlinesRegional airline operating flights for United Express, Delta Connection, American Eagle and Alaska. | 86% | 0.6% | 10 min | 4.5% | 1,150 |
| United Airlines | 79% | 0.8% | 18 min | 7.7% | 366 |
| Frontier Airlines | 77% | 0.0% | 18 min | 9.3% | 43 |
| Southwest Airlines | 66% | 1.2% | 20 min | 9.1% | 893 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 9am87%241 flights
- 10am84%361 flights
- 11am69%49 flights
- 12pm89%28 flights
- 1pm87%401 flights
- 3pm79%136 flights
- 4pm61%102 flights
- 5pm72%345 flights
- 6pm74%187 flights
- 7pm44%130 flights
- 8pm75%444 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday78%0.3% cancelled
- Tuesday81%0.6% cancelled
- Wednesday79%1.2% cancelled
- Thursday71%0.0% cancelled
- Friday76%1.6% cancelled
- Saturday80%1.6% cancelled
- Sunday78%0.8% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft52%
- Airline (crew, maintenance, cleaning, fueling)29%
- Air traffic control & airport congestion13%
- Extreme weather6%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather71%
- Airline (crew, maintenance, cleaning, fueling)24%
- Air traffic control & airport congestion5%
- Security0%
DEN to TUL: common questions
- How often are DEN to TUL flights on time?
- 77% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Denver to Tulsa cancelled?
- 0.9% of scheduled flights were cancelled (21 of 2,452).
- How long are typical delays?
- Across all flights the average arrival delay was 15 min (early arrivals count as zero). Flights that were late arrived 60 min behind schedule on average, and 6.7% of flights were an hour or more late.
- How long is taxi time at DEN?
- Flights on this route spent 21 min taxiing from the gate to takeoff on average.
Related routes
Return trip: TUL to DEN — 81% on time
More flights from Denver
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: DEN → TUL, nonstop flights by US airlines that report to the DOT. How we calculate this.