DEN to JAX flight delays & on-time performance
Nonstop flights from Denver International Airport to Jacksonville International Airport · 1,446 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at DEN or JAX 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 Jacksonville (JAX) arrived on time 77% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 0% were cancelled, and 6% arrived an hour or more late.
- United Airlines was the most punctual airline here (82% on time); Southwest Airlines was the least (68%).
- Departures scheduled around 9am did best (88% on time); around 3pm did worst (65%).
- Tuesday was the most reliable day to fly (80% on time) and Monday the least (74%).
- The largest source of delay minutes was late-arriving aircraft (43%).
Which airline is most on time from DEN to JAX?
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 | 82% | 0.0% | 11 min | 4.7% | 638 |
| Southwest Airlines | 68% | 0.0% | 18 min | 8.1% | 382 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 9am88%194 flights
- 10am80%123 flights
- 11am73%48 flights
- 12pm35%17 flights
- 1pm71%119 flights
- 2pm84%50 flights
- 3pm65%65 flights
- 4pm80%229 flights
- 5pm73%147 flights
- 6pm38%13 flights
- 7pm40%15 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday74%0.0% cancelled
- Tuesday80%0.0% cancelled
- Wednesday77%0.0% cancelled
- Thursday75%0.0% cancelled
- Friday79%0.0% cancelled
- Saturday75%0.0% cancelled
- Sunday77%0.0% 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 aircraft43%
- Airline (crew, maintenance, cleaning, fueling)32%
- Air traffic control & airport congestion23%
- Extreme weather2%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
No cancellation causes recorded in this period.
DEN to JAX: common questions
- How often are DEN to JAX 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 Jacksonville cancelled?
- 0.0% of scheduled flights were cancelled (0 of 1,020).
- 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 53 min behind schedule on average, and 6.0% 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: JAX 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 → JAX, nonstop flights by US airlines that report to the DOT. How we calculate this.