Carrier route record
WNBUR→STS
Southwest Airlines · Burbank to Santa Rosa
- Flights
- 128
- Period
- September 2025 to August 2026
- Share of route
- 17%
- Carriers
- 2
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with Southwest Airlines.
Southwest on BUR to STS draws a C+. About one flight in three arrives at least 15 minutes late, and the typical late arrival is roughly 45 minutes behind schedule. Build slack into anything you connect to. That rests on 128 flights, with a median arrival 1 minute late.
The national on-time rate over the same period is 77.3%, so Southwest on BUR to STS runs 12 points behind the country as a whole. Across a thousand flights that is about 119 extra late arrivals.
Key figures
On time
65.4%
Arrivals under 15 minutes late, of 127 completed flights
Avg delay
47 min
Across delayed arrivals only, not all flights
Cancelled
0.00%
National rate is 1.89%
Whole route
84.1%
Every carrier on BUR to STS, 741 flights
These figures cover 128 flights between September 2025 and August 2026. On-time means an arrival less than 15 minutes after the scheduled gate time, the same threshold the Department of Transportation uses in its own reports. Cancelled and diverted flights are excluded from the on-time rate and counted separately, which is why the cancellation column matters on its own.
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Carrier by carrier
Southwest against every carrier on BUR to STS
Southwest flew 128 of the 741 flights on BUR to STS, about 17% of it. Its 65.4% on time is 19 points worse than the route as a whole, which runs 84.1%. Ranked by on-time rate it is last of two carriers on the route, where the range runs from SkyWest at 88.2% to Southwest at 65.4%.
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 |
|---|---|---|---|---|---|
| SkyWest Airlines | 613 | 88.2% | 63 min | 2.45% | A |
| Southwest Airlines (this page)thin sample | 128 | 65.4% | 47 min | 0.00% | C+ |
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 Southwest runs best on this route
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 28 points, against half a point between the best and worst carrier.
- 5am–8am—
- 8am–11am16 flights—
- 11am–2pm52 flights76.5%
- 2pm–5pm60 flights48.3%
- 5pm–8pm—
- 8pm–5am—
Scale runs 40% to 80%. Rows with fewer than 30 flights show a dash.
The best window here is not the first bank but the 11am–2pm slot at 76.5% on time, ahead of 2pm–5pm at 48.3%. Where the curve peaks mid-day rather than at dawn, the constraint is usually congestion at one end rather than the aircraft's own rotation. The 2pm–5pm window is the busiest, with 60 flights scheduled in it.
Across the year
Southwest on BUR to STS through the year
- Apr–Jun 202667 flights66.7%
- Jul–Sep 202661 flights63.9%
Scale runs 55% to 70%.
Monthly volumes are too low here to break the year into twelve reliable readings. What the twelve-month total says is 65.4% on time across 128 flights.
Split by quarter, Southwest on BUR to STS logged 67 flights in Apr–Jun 2026 and 61 flights in Jul–Sep 2026. Fewer than three of those quarters carried the 30 completed flights this site needs before printing a rate, so the 65.4% annual figure is the one to use.
Arrival by arrival
How late Southwest on BUR to STS runs when it is late
The 44 late arrivals split 18 under half an hour, 17 between 30 and 60 minutes, and 9 an hour or more.
- 15+ min early29 flights22.8%
- Within 15 min54 flights42.5%
- 15–29 min late18 flights14.2%
- 30–59 min late17 flights13.4%
- 1–2 hours late5 flights3.9%
- 2+ hours late4 flights3.1%
Scale runs 0% to 100%.
Share of 127 completed flights by arrival against schedule.
10 of 50 late departures made up the time and arrived on time, 20% of them. 4 flights left on time and still arrived late.
The worst days
Worst days for Southwest on BUR to STS
The latest arrival of the period was on 17 July 2026, 3 hours 42 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 17 July 2026 | 3 hours 42 minutes | Late-arriving aircraft |
| 25 May 2026 | 2 hours 50 minutes | Late-arriving aircraft |
| 8 June 2026 | 2 hours 39 minutes | Carrier |
| 9 July 2026 | 2 hours 10 minutes | Carrier |
| 9 May 2026 | 1 hour 20 minutes | Late-arriving aircraft |
Delay causes
Why Southwest runs late on this route
Late-arriving aircraft accounts for 67% of the 2,052 delay minutes carriers reported here, and the remaining four split what is left.
- 67%Late-arriving aircraft
- 24%Carrier
- 9%National Airspace System
67% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 2,052 reported delay minutes here, that single category outweighs weather by 67 to one. The split is drawn from 2,052 reported delay minutes.
Cancellations are rare at 0.00%, below the national 1.89% and low enough to earn the plus on the grade. Almost no flights are 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 roughly 45 minutes, which a normal layover absorbs.
At 387 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 11am–2pm window matters as much as it does.
The return leg is a different operation and performs like one: it runs 82.8% on time across 128 flights, 17 points above 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. 128 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 Southwest on BUR to STS
Put together: treat all of this as provisional. 128 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 65.4% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 127 completed flights over 12 months sit behind that.
Related
Where to go next
- BUR to STS, every carrier
- Southwest on STS to BUR, the return leg
- SkyWest Airlines on BUR to STS88.2%
- Southwest Airlines network-wide record
- Hollywood Burbank (BUR) 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.