FAT to DEN flight delays
Fresno, CA (FAT) Denver, CO (DEN) · 844 miles
1,450 flights · January 2025 – August 2026 · US Bureau of Transportation Statistics
87.85%
Arrived on time
Within 15 minutes of schedule
0.07%
Cancelled
Share of scheduled flights
70 min
When late, late by
Average across delayed arrivals
9 min
Delay per flight
Averaged over every flight flown
What the record says about this route
Which airline you fly changes the odds here. United Airlines arrived on time 15.6 points more often than Southwest Airlines over the same period on the same route — same airports, same weather, same air traffic control. A gap that survives all of that is about how the two airlines are run.
The two directions do not behave alike. DEN to FAT arrives on time 6.9 points less often than the outbound. Delay accumulates through the flying day, so whichever direction is scheduled later tends to carry the worse record — which is an argument for booking the morning departure if the choice exists.
Flights from Fresno to Denver keep to schedule more reliably than most. On a route this punctual the day you fly matters more than the airline you pick.
Which airline should you fly on this route?
Over January 2025 – August 2026, United Airlines arrived on time most often on FAT to DEN. Southwest Airlines was late most often. Flights ran closest to schedule in October and worst in July.
Every airline on FAT to DEN
Ranked by how many flights each one operated. A carrier with fewer than 100 flights in the period is listed but not graded.
| Airline | Flights | On time | Cancelled | Avg delay | Grade |
|---|---|---|---|---|---|
| SkyWest Airlines | 747 | 90.21% | 0% | 72 min | A |
| Southwest Airlines | 359 | 77.72% | 0% | 63 min | C |
| United Airlines | 344 | 93.29% | 0.29% | 86 min | A |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
The return leg
DEN to FAT Denver back to Fresno 80.98% on time BCommon questions
Are flights from Fresno to Denver usually delayed?
87.85% of flights on the FAT to DEN route arrived within 15 minutes of schedule, so roughly 1 in every ten arrived late. That is better than the average route in this record.
Which airline is most on time from Fresno to Denver?
United Airlines, at 93.29% on time across 344 flights. The least punctual on the route was Southwest Airlines at 77.72%.
How often are FAT to DEN flights cancelled?
0.07% of scheduled flights did not operate — about 1 in every thousand. That is in the normal range.
What is the best month to fly Fresno to Denver?
October, when 93.5% of flights arrived on time. The worst was July at 80.5%.
When FAT to DEN flights are late, how late are they?
About 70 minutes on average across the flights that arrived more than 15 minutes behind schedule.
What these figures do and do not tell you
Everything on this page is counted from the flights that actually operated on FAT to DEN during January 2025 – August 2026, as reported by the airlines to the US Bureau of Transportation Statistics. "On time" is the federal definition: arriving at the gate within 15 minutes of the scheduled time.
A route's record is a description of the past, not a forecast. Weather, air traffic control and the aircraft's earlier flights that day drive most delays, and none of them are predictable from a historical rate. What the record does tell you is whether this route runs late more often than others, and which carrier on it has the better history — which is the part you can actually act on when you book.
Cancellations are counted separately from delays because they are a different problem for a traveller: a late flight still gets you there. How the grade is calculated →