B
Is Frontier Airlines on time Ontario to Seattle?
169 flights · January 2025 – August 2026 · all airlines on ONT to SEA →
82.84%
Arrived on time
Route average 86.37%
0%
Cancelled
Route average 1.29%
96 min
When late, late by
The other airlines on this route
| Airline | Flights | On time | Grade |
|---|---|---|---|
| Alaska Airlines | 1,268 | 81.66% | C |
| SkyWest Airlines | 1,085 | 92.13% | A |
| Delta Air Lines | 29 | 93.1% | — |
Month by month
Jul 2025
peak 100
Jun 2026