Seattle-Tacoma International ⇄ Kansas City International SEA–MCI
Airlines flew 2,247 flights between Seattle-Tacoma International SEA in Seattle, WA and Kansas City International MCI in Kansas City, MO in the twelve months to July 2026, both directions together: 284,995 passengers in 351,538 seats, 81% of them filled, and 370,432 pounds of freight. 1,490 miles, about 176 minutes in the air, on 5 airlines: Alaska Airlines Inc. (1,495), Delta Air Lines Inc. (711), Southwest Airlines Co. (36), United Air Lines Inc. (3) 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 | 128 |
| 2/25 | 126 |
| 3/25 | 155 |
| 4/25 | 167 |
| 5/25 | 211 |
| 6/25 | 245 |
| 7/25 | 257 |
| 8/25 | 244 |
| 9/25 | 219 |
| 10/25 | 171 |
| 11/25 | 158 |
| 12/25 | 168 |
| 1/26 | 132 |
| 2/26 | 110 |
| 3/26 | 147 |
| 4/26 | 177 |
| 5/26 | 218 |
| 6/26 | 246 |
| 7/26 | 257 |
Passengers by month
By month, as a table
| passengers | |
|---|---|
| 1/25 | 14,548 |
| 2/25 | 13,052 |
| 3/25 | 18,394 |
| 4/25 | 18,862 |
| 5/25 | 26,405 |
| 6/25 | 33,948 |
| 7/25 | 35,113 |
| 8/25 | 32,782 |
| 9/25 | 28,166 |
| 10/25 | 21,319 |
| 11/25 | 17,486 |
| 12/25 | 20,872 |
| 1/26 | 14,083 |
| 2/26 | 12,502 |
| 3/26 | 17,829 |
| 4/26 | 19,747 |
| 5/26 | 28,449 |
| 6/26 | 34,630 |
| 7/26 | 37,130 |
The airlines twelve months, both directions
| Airline | Flights | Passengers | Seats filled | Service |
|---|---|---|---|---|
| Alaska Airlines Inc. AS | 1,495 | 214,501 | 82% | scheduled passenger service |
| Delta Air Lines Inc. DL | 711 | 64,409 | 79% | scheduled passenger service |
| Southwest Airlines Co. WN | 36 | 5,205 | 88% | scheduled passenger service |
| United Air Lines Inc. UA | 3 | 587 | 67% | charter passenger service, scheduled passenger service |
| American Airlines Inc. AA | 2 | 293 | 77% | scheduled passenger service |
The aircraft as the airlines report their types
| Aircraft | Flights | Seats a flight | Passengers |
|---|---|---|---|
| Boeing 737-900ER | 702 | 178 | 101,403 |
| Boeing B737 Max 900 | 588 | 178 | 85,293 |
| A200-100 BD-500-1A10 | 499 | 109 | 40,916 |
| A220-300 BD-500-1A11 | 212 | 130 | 23,493 |
| Boeing 737-800 | 181 | 161 | 24,701 |
| Boeing B737 Max 800 | 50 | 166 | 7,083 |
| Boeing 737-700/700LR/Max 7 | 11 | 142 | 1,402 |
| Airbus Industrie A321Neoxlr | 2 | 190 | 293 |
| Boeing 777-300/300ER/333ER | 2 | 350 | 411 |
SEA → MCI this direction alone · flown January 2025 to July 2026
1,124 flights of 1,142 scheduled, 140,055 passengers in 176,019 seats, 181,042 pounds of freight, 899 pounds of mail. Alaska Airlines Inc. 746; Delta Air Lines Inc. 356; Southwest Airlines Co. 18; American Airlines Inc. 2; United Air Lines Inc. 2.
MCI → SEA this direction alone · flown January 2025 to July 2026
1,123 flights of 1,132 scheduled, 144,940 passengers in 175,519 seats, 189,390 pounds of freight. Alaska Airlines Inc. 749; Delta Air Lines Inc. 355; Southwest Airlines Co. 18; United Air Lines Inc. 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 Kansas City International MCI; all routes.