Route reliability record
SFO→RDM
San Francisco to Redmond
- Flights
- 1,310
- Period
- September 2025 to August 2026
- Distance
- 462 mi
- Carriers
- 2
This route sits in the middle of the pack with a C+. Close to three flights in four arrive on time by the DOT's definition, 3 points worse than the national rate of 77.3%. The late ones land about an hour behind schedule. That rests on 1,310 SFO to RDM flights, of which United Airlines flew 656 at 80.3% on time.
Best time to fly SFO to RDM: a 8am–11am departure, ideally on a Saturday. Flights in that window arrived on time 89.2% of the time and Saturday flights 84.8%, against 74.6% for the route overall.
The US average over the same twelve months is 77.3%, so there is little to separate this route from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
74.6%
Arrivals under 15 minutes late, of 1,295 completed flights
Avg delay
64 min
Across delayed arrivals only, not all flights
Cancelled
0.99%
National rate is 1.89%
Best carrier
United
80.3% on time across 656 flights
These figures cover 1,310 flights between September 2025 and August 2026. Beyond the headline rate, 9.1% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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
Which airline is most reliable on SFO to RDM
The choice of carrier is not cosmetic here. United Airlines arrives on time 80.3% of the time; SkyWest Airlines manages 68.8%. Sample sizes sit next to every figure, because a two-point gap across 654 flights means less than a ten-point one.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| United Airlines | 656 | 80.3% | 63 min | 0.61% | B+ |
| SkyWest Airlines | 654 | 68.8% | 65 min | 1.38% | C |
United leads SkyWest by 12 points. Real, but small enough that a better departure time on the weaker carrier can outweigh it.
Flight by flight
Flights on SFO to RDM
The flight numbers below flew this route at least 250 times in the period, busiest first. Each has its own record, with its schedule and delay causes.
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.
Best ways to make this trip
The most reliable ways to fly San Francisco to Redmond
Every airline on this route, ranked by how often a scheduled flight actually operated and arrived on time, with its best departure time and most punctual flight number. No nearby airport pair beat these.
| Option | Airline | Success | On time | Cancelled | Best departure | Most punctual flight |
|---|---|---|---|---|---|---|
| 1. SFO → RDMSan Francisco to Redmond | United Airlines | 79.8% | 80.3% | 0.61% | 8am–11am, Tue | UA 2153 10:35 |
| 2. SFO → RDMSan Francisco to Redmond | SkyWest Airlines | 67.9% | 68.8% | 1.38% | 11am–2pm, Sat | OO 5425 16:30 |
Success is the share of scheduled flights that operated and arrived less than 15 minutes late, so a cancelled flight counts against it. “(route)” means the best time comes from every carrier on the route rather than this airline alone.
Departure window
The best time of day to leave
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 41 points, against 12 points between the best and worst carrier.
- 5am–8am—
- 8am–11am363 flights89.2%
- 11am–2pm160 flights76.7%
- 2pm–5pm280 flights73.3%
- 5pm–8pm157 flights48.7%
- 8pm–5am350 flights71.0%
Scale runs 40% to 95%. Rows with fewer than 30 flights show a dash.
The 5pm–8pm window is where this operation falls apart: 48.7% on time, against 89.2% for the 8am–11am slot. By evening the aircraft flying these rotations have absorbed a full day of small delays and there is no slack left to recover in. The 8am–11am window is the busiest, with 363 flights scheduled in it.
Explore
Filter SFO to RDM by airline, time, month and day
Pick a breakdown and a carrier. The dashed mark on each row is the same slice for every US flight.
On SFO to RDM, the best departure window is 8am–11am at 89.2% on time and the worst is 5pm–8pm at 48.7%, a wide gap of 40.5 points. All US flights leaving 8am–11am ran 83.9%.
- 5–8am—
- 8–11am89.2%
- 11am–2pm76.7%
- 2–5pm73.3%
- 5–8pm48.7%
- 8pm–5am71.0%
best all US flightsScale 40% to 95%. Cells under 30 flights show a dash.
Across the year
When delays peak on this route
This route's year swings by 28 points from best month to worst, which is wide. An annual average tells you very little about the week you are actually flying, so read the strip rather than the headline if your dates are fixed.
June is the worst month at 58.1% on time, 28 points below October, the best at 86.2%. 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. July was the busiest month here, with 140 flights.
Across the week, Saturday is the strongest day at 84.8% on time and Sunday the weakest at 69.4%, a spread of 15 points.
Delay causes
Why this route gets delayed
Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 21,000 reported delay minutes.
- 40%Late-arriving aircraft
- 30%National Airspace System
- 25%Carrier
- 5%Extreme weather
40% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 21,000 reported delay minutes here, that single category outweighs weather by 8 to one. The split is drawn from 21,072 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 sit at 0.99% against a national 1.89%, which is ordinary. Diversions add another 0.15%.
Connections and stage length
What a delay here actually costs
9.1% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection here, and two hours if the onward flight is on a separate ticket.
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 61.8% on time across 1,311 flights, 13 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 13 points of difference.
The sample behind these figures is 1,310 flights, enough that the headline rate is stable to within roughly a point. The hour-block and month splits divide that further, so read the thinner bars with more caution than the headline.
Work out the risk of missing a connection in RDM after this flight
What to do with this
Booking this route
Put together: the calendar is the biggest lever here, not the carrier or the hour. October runs 86.2% on time and June 58.1%, a swing of 28 points. If the dates move at all, move them out of June before you think about anything else. 1,295 completed flights over 12 months sit behind that.
Common questions
SFO to RDM questions
How often is SFO to RDM delayed?
About one flight in four arrives at least 15 minutes late, which is the Department of Transportation's definition of a delayed arrival. That works out to 25.4% of the 1,310 flights in this analysis, against 22.7% nationally. Delayed flights are late by about an hour on average.
Which airline is most reliable on SFO to RDM?
United Airlines leads at 80.3% on time across 656 flights. SkyWest Airlines is at the other end on 68.8%, a gap of 12 points. Sample size matters as much as the percentage: a rate built from a few hundred flights moves around far more than one built from ten thousand.
What time of day has the fewest delays on SFO to RDM?
The 8am–11am departure window is the strongest at 89.2% on time. The 5pm–8pm window is the weakest at 48.7%, 41 points behind. Later departures inherit delays from earlier flights the same aircraft has already flown, which is why the curve slopes the way it does.
How bad are June delays on SFO to RDM?
June is the weakest month at 58.1% on time, compared with 86.2% in October. Across the year that is 28 points between the best and worst months. Moving flexible dates out of that month is one of the few things that reliably helps.
Related
Where to go next
- RDM to SFO — the return legseparate record
- San Francisco International (SFO) delay statistics
- United Airlines on SFO to RDM80.3%
- SkyWest Airlines on SFO to RDM68.8%
- SFO to LAX, a related route70.9%
- SEA to RDM, a related route84.9%
- SFO to SEA, a related route72.3%
- United Airlines on-time record80.3%
- SkyWest Airlines on-time record68.8%
- Why the first flight of the morning is statistically safest
- Same route, different airline: where the carrier you pick matters most
Direction matters. SFO to RDM and RDM to SFO are scored separately because they are separate operations, with different departure banks and different aircraft. Compare the return leg.
Embed SFO to RDM’s on-time badge on your site
Paste this into a web page. The badge shows the current on-time rate, cancellation rate and grade, and updates every month. Preview it, or build a badge for another route or airport.
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.