Carrier route record
UAMFR→DEN
United Airlines · Medford to Denver
- Flights
- 574
- Period
- September 2025 to August 2026
- Share of route
- 79%
- Carriers
- 2
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with United Airlines.
United on MFR to DEN lands a B+, 6 points better than the national rate of 77.3%. About one flight in six arrives 15 minutes late or worse, and those flights are late by close to two hours on average. That rests on 574 flights, with a median arrival 10 minutes early.
Set against the rest of the country, United's MFR to DEN record is 6 points better than the US average of 77.3%. That gap is worth roughly 56 fewer late arrivals for every thousand flights.
Key figures
On time
82.9%
Arrivals under 15 minutes late, of 563 completed flights
Avg delay
108 min
Across delayed arrivals only, not all flights
Cancelled
0.52%
National rate is 1.89%
Whole route
81.5%
Every carrier on MFR to DEN, 728 flights
These figures cover 574 flights between September 2025 and August 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.
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Carrier by carrier
United against every carrier on MFR to DEN
United flew 574 of the 728 flights on MFR to DEN, most of the route. Its 82.9% on time is about level with the route as a whole at 81.5%. Ranked by on-time rate it is first of two carriers on the route, where the range runs from United at 82.9% 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) | 574 | 82.9% | 108 min | 0.52% | B+ |
| SkyWest Airlinesthin sample | 154 | 76.0% | 83 min | 0.00% | B+ |
Flight by flight
United flight numbers on MFR to DEN
Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
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 22 points, against half a point between the best and worst carrier.
- 5am–8am363 flights90.8%
- 8am–11am1 flights—
- 11am–2pm210 flights69.0%
- 2pm–5pm—
- 5pm–8pm—
- 8pm–5am—
Scale runs 60% 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 69.0% on time against 90.8% 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
July is the worst month at 75.9% on time, 18 points below March, the best at 94.1%. Summer afternoon convection and peak-season schedules land on the same weeks every year, so this is a pattern you can book around rather than a run of bad luck. May was the busiest month here, with 62 flights.
Across the week, Sunday is the strongest day at 87.5% on time and Saturday the weakest at 78.8%, a spread of 9 points.
Arrival by arrival
How late United on MFR to DEN runs when it is late
United on MFR to DEN often beats the schedule: 195 of 563 completed flights, 35%, arrived 15 minutes or more early. The 96 late arrivals split 37 under half an hour, 25 between 30 and 60 minutes, and 34 an hour or more.
- 15+ min early195 flights34.6%
- Within 15 min272 flights48.3%
- 15–29 min late37 flights6.6%
- 30–59 min late25 flights4.4%
- 1–2 hours late10 flights1.8%
- 2+ hours late24 flights4.3%
Scale runs 0% to 100%.
Share of 563 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 83 departures that left 15 minutes late or more, only 8 made it up before arrival. 21 flights left on time and still arrived late.
The worst days
Worst days for United on MFR to DEN
The latest arrival of the period was on 18 October 2025, 15 hours 43 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on four of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 18 October 2025 | 15 hours 43 minutes | Carrier |
| 20 August 2026 | 14 hours 28 minutes | Carrier |
| 18 April 2026 | 10 hours 4 minutes | Carrier |
| 4 September 2025 | 8 hours 31 minutes | Late-arriving aircraft |
| 30 September 2025 | 7 hours 37 minutes | Carrier |
Delay causes
Why United runs late on this route
Carrier accounts for 65% of the 10,000 delay minutes carriers reported here, and the remaining four split what is left.
- 65%Carrier
- 17%Late-arriving aircraft
- 14%National Airspace System
- 5%Extreme weather
The largest share of delay minutes, 65%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 6,747 of the 10,000 delay minutes reported here. The split is drawn from 10,402 reported delay minutes.
Cancellations are rare at 0.52%, below the national 1.89% 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
6.0% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last close to two hours, which a normal layover absorbs.
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.
The return leg is a different operation and performs like one: it runs 76.8% on time across 574 flights, 6 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 6 points of difference.
One caution: this is a thin sample. 574 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. 574 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 82.9% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 563 completed flights over 12 months sit behind that.
Related
Where to go next
Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.