Carrier route record
UAMFR→DEN
United Airlines · Medford to Denver
- Flights
- 575
- Period
- July 2025 to June 2026
- Share of route
- 79%
- Carriers
- 2
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with United Airlines.
United on MFR to DEN earns an A+. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 8 points better than the national rate of 77.6%. When something does go wrong the average delay runs close to two hours. That rests on 575 flights, with a median arrival 10 minutes early.
Set against the rest of the country, United's MFR to DEN record is 8 points better than the US average of 77.6%. That gap is worth roughly 77 fewer late arrivals for every thousand flights.
Key figures
On time
85.3%
Arrivals under 15 minutes late, of 566 completed flights
Avg delay
104 min
Across delayed arrivals only, not all flights
Cancelled
0.35%
National rate is 1.81%
Whole route
83.3%
Every carrier on MFR to DEN, 729 flights
These figures cover 575 flights between July 2025 and June 2026. The median arrival is 10 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.
Carrier by carrier
United against every carrier on MFR to DEN
United flew 575 of the 729 flights on MFR to DEN, most of the route. Its 85.3% on time is 2 points better than the route as a whole, which runs 83.3%. Ranked by on-time rate it is first of two carriers on the route, where the range runs from United at 85.3% to SkyWest at 76.0%. One of those carriers flew fewer than 365 flights here, so treat their positions as rough.
Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| United Airlines (this page) | 575 | 85.3% | 104 min | 0.35% | A+ |
| SkyWest Airlinesthin sample | 154 | 76.0% | 83 min | 0.00% | B+ |
Flight by flight
United flight numbers on MFR to DEN
Departure window
When United runs best on this route
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 17 points, against half a point between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.
- 5am–8am363 flights91.4%
- 8am–11am1 flights—
- 11am–2pm211 flights74.6%
- 2pm–5pm—
- 5pm–8pm—
- 8pm–5am—
Scale runs 65% to 95%. Rows with fewer than 30 flights show a dash.
The weak window here is the middle of the day, not the evening: 11am–2pm runs 74.6% on time against 91.4% for 5am–8am. That shape usually means a departure bank rather than an accumulating delay, so the recovery later in the afternoon is real rather than noise. The 5am–8am window is the busiest, with 363 flights scheduled in it.
Across the year
United on MFR to DEN through the year
Delays peak in October, when the on-time rate falls to 78.2%. March is the strongest month at 94.1%. Moving a flexible trip across that boundary buys 16 points. May was the busiest month here, with 62 flights.
Across the week, Sunday is the strongest day at 90.1% on time and Wednesday the weakest at 82.9%. 7 points is a smaller lever than departure hour, but it is free.
Delay causes
Why United runs late on this route
One category carries most of the weight here. Carrier accounts for 65% of the 8,648 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.
- 65%Carrier
- 17%Late-arriving aircraft
- 14%National Airspace System
- 4%Extreme weather
The largest share of delay minutes, 65%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 5,616 of the 8,648 delay minutes reported here. The split is drawn from 8,648 reported delay minutes.
Cancellations are rare at 0.35%, below the national 1.81% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.
Connections and stage length
What a delay here costs
Badly late arrivals are rare here: only 4.9% land an hour or more behind schedule, against 8.1% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.
The 964 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.
The return leg is a different operation and performs like one: it runs 75.2% on time across 575 flights, 10 points below this direction. Departure banks, aircraft rotations and the congestion at each end all differ, so scoring the two directions together would average away a real 10 points of difference.
One caution: this is a thin sample. 575 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.
What to do with this
Booking United on MFR to DEN
Put together: treat all of this as provisional. 575 flights over twelve months is enough to clear this site's floor and not enough to be confident to better than a couple of points. The 85.3% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 566 completed flights over 12 months sit behind that.
Related
Where to go next
Source: US DOT Bureau of Transportation Statistics, on-time performance data, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.