SJC to DEN flight delays & on-time performance
Nonstop flights from Mineta San Jose International Airport to Denver International Airport · 948 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at SJC or DEN right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from San Jose (SJC) to Denver (DEN) arrived on time 81% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 0.4% were cancelled, and 5% arrived an hour or more late.
- United Airlines was the most punctual airline here (89% on time); Southwest Airlines was the least (76%).
- Departures scheduled around 6am did best (96% on time); around 1pm did worst (61%).
- Saturday was the most reliable day to fly (87% on time) and Thursday the least (76%).
- The largest source of delay minutes was air traffic control & airport congestion (37%).
Which airline is most on time from SJC 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 |
|---|---|---|---|---|---|
| United Airlines | 89% | 0.3% | 8 min | 4.2% | 990 |
| Frontier Airlines | 85% | 0.0% | 7 min | 2.2% | 46 |
| Southwest Airlines | 76% | 0.5% | 13 min | 6.1% | 1,528 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 6am96%283 flights
- 7am98%66 flights
- 8am95%514 flights
- 9am92%85 flights
- 10am70%79 flights
- 12pm86%303 flights
- 1pm61%130 flights
- 2pm61%313 flights
- 3pm73%210 flights
- 4pm76%180 flights
- 5pm54%74 flights
- 6pm88%141 flights
- 7pm72%150 flights
- 8pm74%31 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday77%0.0% cancelled
- Tuesday85%0.6% cancelled
- Wednesday86%0.0% cancelled
- Thursday76%0.3% cancelled
- Friday77%0.7% cancelled
- Saturday87%0.6% cancelled
- Sunday80%0.5% 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 congestion37%
- Late-arriving aircraft32%
- Airline (crew, maintenance, cleaning, fueling)29%
- Extreme weather2%
- Security1%
Why flights are cancelled
Share of cancellations by reason.
- Airline (crew, maintenance, cleaning, fueling)60%
- Extreme weather30%
- Air traffic control & airport congestion10%
- Security0%
SJC to DEN: common questions
- How often are SJC 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 San Jose to Denver cancelled?
- 0.4% of scheduled flights were cancelled (10 of 2,564).
- How long are typical delays?
- Across all flights the average arrival delay was 11 min (early arrivals count as zero). Flights that were late arrived 53 min behind schedule on average, and 5.3% of flights were an hour or more late.
- How long is taxi time at SJC?
- Flights on this route spent 13 min taxiing from the gate to takeoff on average.
Related routes
Return trip: DEN to SJC — 74% on time
More flights from San Jose
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: SJC → DEN, nonstop flights by US airlines that report to the DOT. How we calculate this.