DEN to PIT flight delays & on-time performance
Nonstop flights from Denver International Airport to Pittsburgh International Airport · 1,290 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at DEN or PIT 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 Pittsburgh (PIT) arrived on time 74% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 0.4% were cancelled, and 8% arrived an hour or more late.
- United Airlines was the most punctual airline here (81% on time); Southwest Airlines was the least (65%).
- Departures scheduled around 9am did best (87% on time); around 3pm did worst (51%).
- Sunday was the most reliable day to fly (79% on time) and Thursday the least (68%).
- The largest source of delay minutes was late-arriving aircraft (55%).
Which airline is most on time from DEN to PIT?
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 |
|---|---|---|---|---|---|
| Frontier Airlines | 98% | 0.0% | 2 min | 0.0% | 41 |
| United Airlines | 81% | 0.5% | 12 min | 5.2% | 850 |
| Southwest Airlines | 65% | 0.3% | 21 min | 11.8% | 766 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 9am87%70 flights
- 10am80%595 flights
- 11am85%74 flights
- 1pm74%85 flights
- 2pm83%93 flights
- 3pm51%57 flights
- 4pm58%43 flights
- 5pm71%397 flights
- 6pm63%107 flights
- 7pm52%91 flights
- 8pm54%37 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday71%0.0% cancelled
- Tuesday75%0.0% cancelled
- Wednesday71%0.4% cancelled
- Thursday68%0.4% cancelled
- Friday76%0.4% cancelled
- Saturday75%0.5% cancelled
- Sunday79%0.9% 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 aircraft55%
- Airline (crew, maintenance, cleaning, fueling)30%
- Air traffic control & airport congestion14%
- Extreme weather1%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather50%
- Airline (crew, maintenance, cleaning, fueling)33%
- Air traffic control & airport congestion17%
- Security0%
DEN to PIT: common questions
- How often are DEN to PIT flights on time?
- 74% 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 Pittsburgh cancelled?
- 0.4% of scheduled flights were cancelled (6 of 1,657).
- How long are typical delays?
- Across all flights the average arrival delay was 16 min (early arrivals count as zero). Flights that were late arrived 55 min behind schedule on average, and 8.1% of flights were an hour or more late.
- How long is taxi time at DEN?
- Flights on this route spent 20 min taxiing from the gate to takeoff on average.
Related routes
Return trip: PIT to DEN — 82% 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 → PIT, nonstop flights by US airlines that report to the DOT. How we calculate this.