Austin-Bergstrom International ⇄ Seattle-Tacoma International AUS–SEA
Airlines flew 4,109 flights between Austin-Bergstrom International AUS in Austin, TX and Seattle-Tacoma International SEA in Seattle, WA in the twelve months to July 2026, both directions together: 540,253 passengers in 638,697 seats, 85% of them filled, and 217,231 pounds of freight. 1,770 miles, about 239 minutes in the air, on 7 airlines: Alaska Airlines Inc. (2,121), Delta Air Lines Inc. (1,864), Southwest Airlines Co. (115), American Airlines Inc. (4) and 3 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 | 227 |
| 2/25 | 213 |
| 3/25 | 332 |
| 4/25 | 352 |
| 5/25 | 392 |
| 6/25 | 411 |
| 7/25 | 413 |
| 8/25 | 389 |
| 9/25 | 336 |
| 10/25 | 340 |
| 11/25 | 339 |
| 12/25 | 336 |
| 1/26 | 224 |
| 2/26 | 250 |
| 3/26 | 336 |
| 4/26 | 339 |
| 5/26 | 370 |
| 6/26 | 416 |
| 7/26 | 434 |
Passengers by month
By month, as a table
| passengers | |
|---|---|
| 1/25 | 29,376 |
| 2/25 | 29,790 |
| 3/25 | 41,392 |
| 4/25 | 41,706 |
| 5/25 | 49,495 |
| 6/25 | 54,835 |
| 7/25 | 57,653 |
| 8/25 | 51,123 |
| 9/25 | 43,013 |
| 10/25 | 43,720 |
| 11/25 | 40,494 |
| 12/25 | 40,743 |
| 1/26 | 29,546 |
| 2/26 | 32,841 |
| 3/26 | 43,610 |
| 4/26 | 41,462 |
| 5/26 | 48,585 |
| 6/26 | 61,006 |
| 7/26 | 64,110 |
The airlines twelve months, both directions
| Airline | Flights | Passengers | Seats filled | Service |
|---|---|---|---|---|
| Alaska Airlines Inc. AS | 2,121 | 313,909 | 84% | scheduled passenger service |
| Delta Air Lines Inc. DL | 1,864 | 207,367 | 85% | scheduled passenger service |
| Southwest Airlines Co. WN | 115 | 18,037 | 93% | scheduled passenger service |
| American Airlines Inc. AA | 4 | 698 | 91% | scheduled passenger service |
| SkyWest Airlines Inc. OO | 2 | 0 | 0% | scheduled passenger service |
| Sun Country Airlines d/b/a MN Airlines SY | 2 | 85 | 23% | charter passenger service |
| United Air Lines Inc. UA | 1 | 157 | 88% | scheduled passenger service |
The aircraft as the airlines report their types
| Aircraft | Flights | Seats a flight | Passengers |
|---|---|---|---|
| Boeing 737-900ER | 978 | 178 | 147,731 |
| A220-300 BD-500-1A11 | 942 | 130 | 104,483 |
| Boeing B737 Max 900 | 855 | 178 | 126,695 |
| Boeing 737-800 | 521 | 161 | 71,892 |
| A200-100 BD-500-1A10 | 402 | 109 | 36,469 |
| Airbus Industrie A320-100/200 | 141 | 157 | 16,644 |
| Airbus Industrie A319 | 135 | 132 | 16,252 |
| Boeing B737 Max 800 | 107 | 171 | 16,556 |
| Boeing 737-700/700LR/Max 7 | 17 | 137 | 2,223 |
| Airbus Industrie A321Neoxlr | 5 | 190 | 728 |
| Airbus Industrie A321-200n | 3 | 195 | 423 |
| Embraer ERJ-175 | 2 | 73 | 0 |
| Boeing 737-900 | 1 | 179 | 157 |
AUS → SEA this direction alone · flown January 2025 to July 2026
2,050 flights of 2,079 scheduled, 269,838 passengers in 318,155 seats, 71,017 pounds of freight. Alaska Airlines Inc. 1,058; Delta Air Lines Inc. 932; Southwest Airlines Co. 57; SkyWest Airlines Inc. 2; Sun Country Airlines d/b/a MN Airlines 1.
SEA → AUS this direction alone · flown January 2025 to July 2026
2,059 flights of 2,081 scheduled, 270,415 passengers in 320,542 seats, 146,214 pounds of freight, 663 pounds of mail. Alaska Airlines Inc. 1,063; Delta Air Lines Inc. 932; Southwest Airlines Co. 58; American Airlines Inc. 4; Sun Country Airlines d/b/a MN Airlines 1; 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: Austin-Bergstrom International AUS and Seattle-Tacoma International SEA; all routes.