Saipan, TT

What the Data Says About SPN

Saipan, TT in Saipan, U.S. Pacific Trust Territories and Possessions handled 4,024 flights in the Bureau of Transportation Statistics dataset between 2020 and 2025, posting a 94.8% on-time departure rate. Of those flights, 210 experienced delays, 15 were cancelled, and 0 were diverted. The cancellation rate works out to 0.37%, the diversion rate to 0.00%, and the average delay when departures run late is 91.7 minutes. These figures are the baseline for comparing SPN against other airports in the same state and nationally.

Breaking down what drives delays at SPN, Late Aircraft leads the pack. Late Aircraft accounts for 58.8% of total delay minutes, followed by Carrier at 26.7% and Weather at 9.7%. Weather contributes 9.7% of delay minutes at this airport, while security holds the smallest share at 0.0%. Travelers often overestimate the weather share; the BTS categorization shows late-arriving aircraft and carrier operations as the larger contributors.

Seasonally, April runs the cleanest at SPN with a 98.6% on-time rate, while July is the roughest at 95.4% — a 3-point swing between best and worst month. Volume peaks in August, when average flights hit 61. The busiest route from SPN is to SPN (Saipan), with 1,676 flights at a 95.5% on-time rate. Combine these numbers — 94.8% on-time, 91.7-minute average delay, 0.37% cancellation rate — and you have a concrete picture of departure reliability at Saipan, TT.