Seattle-Tacoma International ⇄ Tri-Cities SEA–PSC
Airlines flew 5,344 flights between Seattle-Tacoma International SEA in Seattle, WA and Tri-Cities PSC in Pasco, WA in the twelve months to July 2026, both directions together: 347,840 passengers in 445,074 seats, 78% of them filled, and 59,039 pounds of freight. 172 miles, about 34 minutes in the air, on 5 airlines: SkyWest Airlines Inc. (2,952), Horizon Air (1,898), Alaska Airlines Inc. (490), Delta Air Lines Inc. (2) and 1 more. Planning to fly it yourself? The weather and winds along this route right now.
Flights by month both directions
By month, as a table
| flights | |
|---|---|
| 1/25 | 411 |
| 2/25 | 354 |
| 3/25 | 391 |
| 4/25 | 408 |
| 5/25 | 538 |
| 6/25 | 495 |
| 7/25 | 482 |
| 8/25 | 508 |
| 9/25 | 453 |
| 10/25 | 458 |
| 11/25 | 421 |
| 12/25 | 468 |
| 1/26 | 408 |
| 2/26 | 362 |
| 3/26 | 395 |
| 4/26 | 418 |
| 5/26 | 540 |
| 6/26 | 446 |
| 7/26 | 467 |
Passengers by month
By month, as a table
| passengers | |
|---|---|
| 1/25 | 30,222 |
| 2/25 | 25,359 |
| 3/25 | 27,991 |
| 4/25 | 26,211 |
| 5/25 | 31,327 |
| 6/25 | 31,859 |
| 7/25 | 31,556 |
| 8/25 | 30,727 |
| 9/25 | 29,805 |
| 10/25 | 30,092 |
| 11/25 | 29,996 |
| 12/25 | 34,292 |
| 1/26 | 29,005 |
| 2/26 | 25,062 |
| 3/26 | 26,797 |
| 4/26 | 25,392 |
| 5/26 | 31,841 |
| 6/26 | 27,103 |
| 7/26 | 27,728 |
The airlines twelve months, both directions
| Airline | Flights | Passengers | Seats filled | Service |
|---|---|---|---|---|
| SkyWest Airlines Inc. OO | 2,952 | 168,255 | 77% | scheduled passenger service |
| Horizon Air QX | 1,898 | 121,307 | 84% | scheduled passenger service |
| Alaska Airlines Inc. AS | 490 | 57,984 | 70% | scheduled passenger service |
| Delta Air Lines Inc. DL | 2 | 294 | 90% | scheduled passenger service |
| Sun Country Airlines d/b/a MN Airlines SY | 2 | 0 | 0% | charter passenger service |
The aircraft as the airlines report their types
| Aircraft | Flights | Seats a flight | Passengers |
|---|---|---|---|
| Embraer ERJ-175 | 4,850 | 75 | 289,562 |
| Boeing 737-800 | 186 | 160 | 21,340 |
| Boeing 737-900ER | 151 | 178 | 18,664 |
| Boeing B737 Max 900 | 115 | 178 | 13,606 |
| Boeing B737 Max 800 | 22 | 160 | 2,806 |
| Boeing 737-700/700LR/Max 7 | 16 | 124 | 1,417 |
| Boeing 737-900 | 2 | 178 | 151 |
| Airbus Industrie A319 | 1 | 132 | 119 |
| Airbus Industrie A321-200n | 1 | 194 | 175 |
SEA → PSC this direction alone · flown January 2025 to July 2026
2,672 flights of 2,697 scheduled, 173,620 passengers in 222,842 seats, 30,715 pounds of freight. SkyWest Airlines Inc. 1,472; Horizon Air 950; Alaska Airlines Inc. 248; Delta Air Lines Inc. 1; Sun Country Airlines d/b/a MN Airlines 1.
PSC → SEA this direction alone · flown January 2025 to July 2026
2,672 flights of 2,697 scheduled, 174,220 passengers in 222,232 seats, 28,324 pounds of freight. SkyWest Airlines Inc. 1,480; Horizon Air 948; Alaska Airlines Inc. 242; Delta Air Lines Inc. 1; Sun Country Airlines d/b/a MN Airlines 1.
Source: the Bureau of Transportation Statistics' T-100 Segment table (all carriers). A flight is one departure performed on this segment; seats and passengers are the airlines' own monthly reports; "seats filled" is passengers divided by seats. The miles are the DOT's great-circle distance. Both ends: Seattle-Tacoma International SEA and Tri-Cities PSC; all routes.