LATEST 12-MONTH WINDOW
BOS to SEA averages 87% full
Boston and Seattle: 87% average load factor, 791k passengers, and 912k seats across both directions in the latest 12-month BTS window.
Load factor
87%
Passengers
791k
Seats
912k
Monthly trend
| Month | Load | Passengers |
|---|---|---|
| Aug 2025 | 94% | 95k |
| Sep 2025 | 89% | 76k |
| Oct 2025 | 86% | 72k |
| Nov 2025 | 82% | 48k |
| Dec 2025 | 83% | 48k |
| Jan 2026 | 82% | 37k |
| Feb 2026 | 79% | 35k |
| Mar 2026 | 84% | 53k |
| Apr 2026 | 85% | 54k |
| May 2026 | 86% | 81k |
| Jun 2026 | 87% | 89k |
| Jul 2026 | 91% | 103k |