Route · SEA → SBP · 2020–2025 BTS data
Seattle to San Luis Obispo
The SEA–SBP corridor (Seattle, WA → San Luis Obispo, CA) runs ahead of the national average, served by 6 carriers across roughly 847 miles.
Data updated 2026-06-13
- 85.7%
- On-time
- +6.7 pts
- vs US avg
- 54 min
- Delay when late
- 2,042
- Flights
Cancelled
0.2%
Best Month
Jul 2024 82%
Worst Month
Aug 2024 63%
Distance
847 mi
Carriers
6
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 31 | 9 | 0 | 1 | AS |
| Nov 2025 | 30 | 5 | 0 | 0 | AS |
| Oct 2025 | 31 | 4 | 1 | 0 | AS |
| Aug 2025 | 31 | 9 | 0 | 0 | AS |
| Jul 2025 | 31 | 9 | 0 | 0 | AS |
| Jun 2025 | 30 | 13 | 0 | 0 | AS |
| May 2025 | 31 | 7 | 0 | 0 | AS |
| Apr 2025 | 30 | 4 | 0 | 1 | AS |
| Mar 2025 | 31 | 7 | 0 | 0 | AS |
| Jan 2025 | 31 | 2 | 0 | 0 | AS |
| Dec 2024 | 31 | 5 | 0 | 0 | AS,OO |
| Nov 2024 | 30 | 2 | 0 | 0 | OO,AS |
| Oct 2024 | 31 | 4 | 0 | 0 | AS,OO |
| Sep 2024 | 55 | 19 | 0 | 1 | OO |
| Aug 2024 | 60 | 22 | 1 | 0 | OO |
| Jul 2024 | 62 | 11 | 0 | 0 | OO |
| Jun 2024 | 37 | 7 | 0 | 0 | OO |
| Apr 2024 | 38 | 7 | 0 | 0 | OO |
| Dec 2023 | 31 | 3 | 0 | 0 | OO |
| Nov 2023 | 30 | 6 | 0 | 0 | OO |
| Oct 2023 | 31 | 3 | 0 | 0 | OO |
| Sep 2023 | 30 | 5 | 0 | 0 | OO |
| Aug 2023 | 31 | 5 | 0 | 0 | OO |
| Jul 2023 | 31 | 2 | 0 | 0 | OO |
Cancellation Rate
0.2%
2 of 835 flights
Diversion Rate
0.4%
3 of 835 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
SEA - Seattle
Full on-time, delay-cause, and seasonal performance for Seattle, WA.
Origin airport →SBP - San Luis Obispo
Full on-time, delay-cause, and seasonal performance for San Luis Obispo, CA.
Destination airport →Compare the two airports
See SEA and SBP side by side on delays, cancellations, and reliability.
Open comparison tool →Similar routes
Other BTS-tracked routes with comparable performance or trip length to SEA–SBP.
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What the Data Says About SEA to SBP
Seattle to San Luis Obispo (SEA to SBP) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 85.7% on-time rate across 2,042 flights, with delays that do happen averaging 53.7 minutes. The corridor runs roughly 847 miles and is served by 6 carriers. Over the most recent 24 months, 2 of 835 flights were cancelled (0.2%) and 3 diverted (0.4%).
The monthly split is wide on this route: Jul 2024 posted the strongest performance at 82% on-time, while Aug 2024 came in at just 63% - a 19-point swing worth factoring into travel timing.
Frequently Asked Questions
How often are flights delayed from SEA to SBP? ▼
What is the cancellation rate for SEA to SBP? ▼
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Data source
Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.
Read our methodology - how this data is sourced, computed, and verified.
Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.