Route · SEA → SMF · 2020–2025 BTS data
Seattle to Sacramento
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), SEA to SMF (Seattle to Sacramento) ranks #229 of 4927 tracked domestic routes by total flights (most flights = #1).
Data updated 2026-06-13
- 82.3%
- On-time
- +3.3 pts
- vs US avg
- 57 min
- Delay when late
- 24,311
- Flights
- #229 of 4927
- Corpus placement
Cancelled
0.5%
Best Month
Feb 2024 87%
Worst Month
Jun 2024 70%
Distance
605 mi
Carriers
23
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 294 | 78 | 1 | 0 | WN,AS,OO |
| Nov 2025 | 350 | 55 | 2 | 1 | OO,AS,WN |
| Oct 2025 | 375 | 56 | 3 | 0 | AS,OO,WN |
| Sep 2025 | 398 | 63 | 1 | 0 | WN,OO,AS |
| Aug 2025 | 427 | 96 | 1 | 0 | OO,WN,AS |
| Jul 2025 | 455 | 120 | 3 | 0 | AS,OO,WN |
| Jun 2025 | 430 | 115 | 0 | 0 | AS,OO,WN |
| May 2025 | 380 | 83 | 2 | 0 | AS,OO,WN |
| Apr 2025 | 318 | 54 | 0 | 0 | OO,WN,AS |
| Mar 2025 | 312 | 54 | 1 | 0 | AS,OO,WN |
| Feb 2025 | 266 | 59 | 4 | 0 | AS,OO,WN |
| Jan 2025 | 293 | 44 | 0 | 0 | AS,OO,WN |
| Dec 2024 | 252 | 46 | 0 | 0 | AS,OO,WN |
| Nov 2024 | 304 | 42 | 2 | 0 | OO,WN,AS |
| Oct 2024 | 386 | 68 | 3 | 0 | AS,OO,WN |
| Sep 2024 | 415 | 84 | 4 | 0 | WN,OO,AS |
| Aug 2024 | 425 | 114 | 0 | 0 | AS,WN,OO |
| Jul 2024 | 417 | 97 | 1 | 0 | AS,OO,WN |
| Jun 2024 | 362 | 107 | 1 | 0 | AS,OO,WN |
| May 2024 | 358 | 79 | 0 | 0 | AS,DL,OO,WN |
| Apr 2024 | 305 | 52 | 0 | 0 | AS,DL,OO,WN |
| Mar 2024 | 288 | 44 | 0 | 0 | AS,DL,OO,WN |
| Feb 2024 | 283 | 37 | 0 | 0 | AS,DL,OO,WN |
| Jan 2024 | 324 | 69 | 10 | 0 | AS,DL,WN,OO |
SEA–SMF seasonal on-time pattern
Best: April (86.4%) · weakest: December (76.9%)
Strongest calendar month
April
86.4% on-time · ~310 flights/mo
Busiest calendar month
August
~395 flights/mo avg
Weakest calendar month
December
76.9% on-time · ~294 flights/mo
Cancellation Rate
0.5%
39 of 8,417 flights
Diversion Rate
0.0%
1 of 8,417 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.
SEA on-time profileSMF - Sacramento
Full on-time, delay-cause, and seasonal performance for Sacramento, CA.
SMF on-time profileCompare the two airports
See SEA and SMF side by side on delays, cancellations, and reliability.
Compare SEA vs SMFOrigin-hub reliability standing
Mid-pack among SEA departures
From SEA, this corridor sits with 63 other 75–85% on-time routes out of 89 tracked departures, not the hub's reliability leaders (25 at ≥85%) and not the softest ( 1 below 75%). Destination: Sacramento · fleet on-time rank #2243 of 4927.
Similar routes
Other BTS-tracked routes with comparable performance or trip length to SEA–SMF.
Routes with a similar on-time rate
What the Data Says About SEA to SMF
Bureau of Transportation Statistics records show Seattle to Sacramento (SEA to SMF) running a 82.3% on-time rate over 24,311 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 56.7 minutes. The 605-mile corridor is served by 23 carriers, and over the last 24 months 0.5% of 8,417 flights were cancelled, 0.0% diverted.
The monthly split is wide on this route: Feb 2024 posted the strongest performance at 87% on-time, while Jun 2024 came in at just 70% - a 17-point swing worth factoring into travel timing.
On the multi-year calendar, SEA–SMF peaks in April at 86.4% on-time while August carries the heaviest traffic (~395 flights per month) ; the softest month is December at 76.9%, a 9.5-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does SEA to SMF rank among US routes by traffic? ▼
How often are flights delayed from SEA to SMF? ▼
What is the cancellation rate for SEA to SMF? ▼
How far is the flight from SEA to SMF? ▼
When is the best time to fly from SEA to SMF? ▼
Airports on this route
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.
Using SEA–SMF data
SEA–SMF runs 3.3 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.
- Compare SEA and SMF airport profiles: delay causes and top routes differ even on the same corridor. SEA airport
- If your dates flex, April (86.4% on-time) beats December (76.9%) on this corridor. Seasonal chart
- 4 other routes post a similar 82.3% on-time rate; compare before you commit to this pairing. Similar routes
On-time rate reflects the BTS historical average across all reporting carriers on this origin–destination pair, not any single flight or booking recommendation.
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.