TUL to DEN flight delays & on-time performance
Nonstop flights from Tulsa International Airport to Denver International Airport · 541 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at TUL or DEN right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Tulsa (TUL) to Denver (DEN) arrived on time 81% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 0.9% were cancelled, and 6% arrived an hour or more late.
- Southwest Airlines was the most punctual airline here (84% on time); United Airlines was the least (77%).
- Departures scheduled around 6am did best (95% on time); around 5pm did worst (65%).
- Friday was the most reliable day to fly (83% on time) and Wednesday the least (78%).
- The largest source of delay minutes was air traffic control & airport congestion (33%).
Which airline is most on time from TUL to DEN?
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 |
|---|---|---|---|---|---|
| Southwest Airlines | 84% | 1.1% | 11 min | 5.2% | 893 |
| SkyWest AirlinesRegional airline operating flights for United Express, Delta Connection, American Eagle and Alaska. | 80% | 0.8% | 16 min | 7.6% | 1,150 |
| United Airlines | 77% | 1.1% | 12 min | 3.6% | 365 |
| Frontier Airlines | 74% | 0.0% | 18 min | 11.9% | 42 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 5am91%151 flights
- 6am95%443 flights
- 7am90%49 flights
- 8am93%97 flights
- 9am76%360 flights
- 10am79%38 flights
- 11am83%383 flights
- 12pm85%48 flights
- 1pm81%58 flights
- 5pm65%377 flights
- 6pm70%130 flights
- 7pm70%190 flights
- 8pm76%80 flights
- 9pm100%25 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday79%0.3% cancelled
- Tuesday82%0.3% cancelled
- Wednesday78%0.6% cancelled
- Thursday80%0.3% cancelled
- Friday83%0.6% cancelled
- Saturday81%2.2% cancelled
- Sunday81%2.3% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Air traffic control & airport congestion33%
- Airline (crew, maintenance, cleaning, fueling)33%
- Late-arriving aircraft24%
- Extreme weather10%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather78%
- Airline (crew, maintenance, cleaning, fueling)13%
- Air traffic control & airport congestion9%
- Security0%
TUL to DEN: common questions
- How often are TUL to DEN flights on time?
- 81% 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 Tulsa to Denver cancelled?
- 0.9% of scheduled flights were cancelled (23 of 2,450).
- How long are typical delays?
- Across all flights the average arrival delay was 14 min (early arrivals count as zero). Flights that were late arrived 64 min behind schedule on average, and 6.2% of flights were an hour or more late.
- How long is taxi time at TUL?
- Flights on this route spent 19 min taxiing from the gate to takeoff on average.
Related routes
Return trip: DEN to TUL — 77% on time
More flights from Tulsa
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: TUL → DEN, nonstop flights by US airlines that report to the DOT. How we calculate this.