Carrier route record
UASFO→RDM
United Airlines · San Francisco to Redmond
- Flights
- 656
- Period
- September 2025 to August 2026
- Share of route
- 50%
- Carriers
- 2
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with United Airlines.
United on SFO to RDM lands a B+, 3 points better than the national rate of 77.3%. About one flight in five arrives 15 minutes late or worse, and those flights are late by about an hour on average. That rests on 656 flights, with a median arrival 7 minutes early.
The US average over the same twelve months is 77.3%, so there is little to separate United on SFO to RDM from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
80.3%
Arrivals under 15 minutes late, of 651 completed flights
Avg delay
63 min
Across delayed arrivals only, not all flights
Cancelled
0.61%
National rate is 1.89%
Whole route
74.6%
Every carrier on SFO to RDM, 1,310 flights
These figures cover 656 flights between September 2025 and August 2026. The median arrival is 7 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.
Fare search by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Carrier by carrier
United against every carrier on SFO to RDM
United flew 656 of the 1,310 flights on SFO to RDM, most of the route. Its 80.3% on time is 6 points better than the route as a whole, which runs 74.6%. Ranked by on-time rate it is first of two carriers on the route, where the range runs from United at 80.3% to SkyWest at 68.8%.
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) | 656 | 80.3% | 63 min | 0.61% | B+ |
| SkyWest Airlines | 654 | 68.8% | 65 min | 1.38% | C |
Flight by flight
United flight numbers on SFO to RDM
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 19 points, against half a point between the best and worst carrier.
- 5am–8am—
- 8am–11am363 flights89.2%
- 11am–2pm—
- 2pm–5pm13 flights—
- 5pm–8pm14 flights—
- 8pm–5am266 flights70.2%
Scale runs 60% to 95%. Rows with fewer than 30 flights show a dash.
Book the morning departure. Flights leaving between 8am–11am arrive on time 89.2% of the time, against 70.2% for the overnight window. That is 19 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 8am–11am window is the busiest, with 363 flights scheduled in it.
Across the year
United on SFO to RDM through the year
June is the worst month at 61.7% on time, 35 points below January, the best at 96.8%. 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. March was the busiest month here, with 62 flights.
Across the week, Tuesday is the strongest day at 89.7% on time and Sunday the weakest at 71.3%, a spread of 18 points.
Arrival by arrival
How late United on SFO to RDM runs when it is late
United on SFO to RDM often beats the schedule: 204 of 651 completed flights, 31%, arrived 15 minutes or more early. The 128 late arrivals split 45 under half an hour, 37 between 30 and 60 minutes, and 46 an hour or more.
- 15+ min early204 flights31.3%
- Within 15 min319 flights49.0%
- 15–29 min late45 flights6.9%
- 30–59 min late37 flights5.7%
- 1–2 hours late33 flights5.1%
- 2+ hours late13 flights2.0%
Scale runs 0% to 100%.
Share of 651 completed flights by arrival against schedule.
27 of 134 late departures made up the time and arrived on time, 20% of them. 21 flights left on time and still arrived late.
The worst days
Worst days for United on SFO to RDM
The latest arrival of the period was on 15 February 2026, 8 hours 41 minutes behind schedule; most of its delay minutes were filed as extreme weather. On three of the five worst days the largest share was filed as a late-arriving aircraft.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 15 February 2026 | 8 hours 41 minutes | Extreme weather |
| 5 June 2026 | 8 hours 33 minutes | Carrier |
| 29 June 2026 | 3 hours 4 minutes | Late-arriving aircraft |
| 28 May 2026 | 3 hours 2 minutes | Late-arriving aircraft |
| 13 July 2026 | 2 hours 53 minutes | Late-arriving aircraft |
Delay causes
Why United runs late on this route
Late-arriving aircraft accounts for 53% of the 8,099 delay minutes carriers reported here, and the remaining four split what is left.
- 53%Late-arriving aircraft
- 31%Carrier
- 10%National Airspace System
- 6%Extreme weather
53% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 8,099 reported delay minutes here, that single category outweighs weather by 8 to one. The split is drawn from 8,099 reported delay minutes.
The practical consequence: the 8am–11am departure is the one that starts clean. Its aircraft has no earlier leg to be late from, which is exactly why that window shows 89.2% on time here.
Cancellations are rare at 0.61%, 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
7.1% 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 about an hour, which a normal layover absorbs.
At 462 miles this is a short hop, and stage length matters more than it looks. A flight this short spends under two hours in the air, which leaves almost nothing to claw back a late pushback with. Delay here is decided on the ground, in the turn, which is why the 8am–11am window matters as much as it does.
The return leg is a different operation and performs like one: it runs 63.2% on time across 656 flights, 17 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 17 points of difference.
One caution: this is a thin sample. 656 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 SFO to RDM
Put together: treat all of this as provisional. 656 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 80.3% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 651 completed flights over 12 months sit behind that.
Related
Where to go next
- SFO to RDM, every carrier
- United on RDM to SFO, the return leg
- SkyWest Airlines on SFO to RDM68.8%
- United Airlines network-wide record
- San Francisco International (SFO) delay statistics
- Why the first flight of the morning is statistically safest
- The best time of day to fly, according to 7.05 million flight records
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.