Route Reliability
Sacramento → Seattle
SMF–SEA · 605 miles · Sacramento International Airport to Seattle–Tacoma International Airport
- 83%
- Arrive within 15 minutes
- 1 min
- Average arrival delay
- 0.4%
- Cancelled
- 4,600
- Flights in the data
Data through May 2026.
Who flies it best
Ranked by on-time arrivals. Historical results, not predictions.
- 1.Delta Air Lines89%1,620 flights
- 2.Alaska Airlines80%1,811 flights
- 3.Southwest Airlines79%1,169 flights
What the data says
Morning flights do better here.
SMF–SEA flights departing between 3–6 AM arrived on time 97% of the time, versus 73% between 9 PM–12 AM.
Thursday is the weak spot.
SMF–SEA flights arrived on time 88% of the time on Tuesdays. On Thursdays: 78%.
Delta Air Lines runs this route best.
Delta Air Lines arrived on time 89% of the time on this route; Southwest Airlines managed 79%.
Best historical flights
Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.
Top flights by on-time rate
More flights on this route
The breakdown
- Mon84%(702 flights)
- Tue88%(639 flights)
- Wed84%(637 flights)
- Thu78%(694 flights)
- Fri81%(685 flights)
- Sat85%(537 flights)
- Sun81%(680 flights)
- 3–6 AM97%(126 flights)
- 6–9 AM87%(1155 flights)
- 9 AM–12 PM89%(631 flights)
- 12–3 PM82%(903 flights)
- 3–6 PM82%(750 flights)
- 6–9 PM75%(903 flights)
- 9 PM–12 AM73%(106 flights)
Jun 73% → May 86% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 73% | 439 |
| July 2025 | 81% | 453 |
| August 2025 | 79% | 424 |
| September 2025 | 80% | 398 |
| October 2025 | 82% | 396 |
| November 2025 | 86% | 376 |
| December 2025 | 78% | 340 |
| January 2026 | 89% | 316 |
| February 2026 | 90% | 303 |
| March 2026 | 87% | 363 |
| April 2026 | 86% | 369 |
| May 2026 | 86% | 397 |
Keep nerding
Based on 4,600 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.