Route
SEA → PSC
Seattle–Tacoma International Airport Tri Cities Airport
How punctual is this route?
- On-time arrivals
- 83.3%
- Less than 15 minutes late
- Cancelled
- 1.0%
- Of scheduled flights
- Average delay when late
- 67 min
- Flights arriving 15+ minutes late
- Flights tracked
- 1,678
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 54%
- Extreme weather 23%
- Late-arriving aircraft 15%
- Air traffic control & airport 8%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 86.2% | 167 |
| October 2025 | 84.4% | 213 |
| November 2025 | 87.2% | 163 |
| December 2025 | 83.4% | 159 |
| January 2026 | 80.0% | 146 |
| February 2026 | 83.8% | 138 |
| March 2026 | 78.0% | 131 |
| April 2026 | 83.5% | 109 |
| May 2026 | 82.3% | 130 |
| June 2026 | 87.6% | 97 |
| July 2026 | 74.2% | 93 |
| August 2026 | 84.8% | 132 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data
Airlines on this route
| Airline | Flights | On time | Cancelled | Avg. delay when late |
|---|---|---|---|---|
| SkyWest Airlines | 1,465 | 83.8% | 0.8% | 71 min |
| Alaska Airlines | 213 | 79.3% | 2.3% | 45 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
OO4017
18% late · 364 flights
-
OO3992
15% late · 255 flights
-
OO3891
16% late · 248 flights
-
OO3608
5% late · 110 flights
-
OO3605
9% late · 106 flights
-
AS771
37% late · 56 flights
-
AS906
11% late · 55 flights
-
AS794
16% late · 52 flights
-
OO3280
39% late · 49 flights
-
OO3408
7% late · 48 flights
-
AS212
12% late · 33 flights
-
OO3020
25% late · 33 flights
-
OO3955
19% late · 31 flights
-
OO3070
20% late · 25 flights
-
OO3485
23% late · 22 flights
-
OO3353
19% late · 21 flights
-
OO3357
14% late · 21 flights
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