Best time to fly out of Gustavus (GST)
Gustavus did not fly enough departures in this window to split the day into time bands. Not enough flights to say. A percentage needs at least 100 flights behind it before it is worth printing; anything thinner is noise wearing a decimal point. These are historical odds, not forecasts. The records say what happened on this schedule over three years; they know nothing about tomorrow’s thunderstorm.
Data through June 2026 · Bureau of Transportation Statistics
On-time rate by hour and day
On this page, “on time” means a departure that pushed back less than 15 minutes behind its scheduled time — the Bureau of Transportation Statistics definition, and the one airlines are held to.
| Departure time | Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|---|---|---|---|---|---|---|
| Before 6am | – | – | – | – | – | – | – |
| 6–8am | – | – | – | – | – | – | – |
| 8–10am | – | – | – | – | – | – | – |
| 10am–12pm | – | – | – | – | – | – | – |
| 12–2pm | – | – | – | – | – | – | – |
| 2–4pm | – | – | – | – | – | – | – |
| 4–6pm | – | – | – | – | – | – | – |
| 6–8pm | – | – | – | – | – | – | – |
| 8–10pm | – | – | – | – | – | – | – |
| 10pm–12am | – | – | – | – | – | – | – |
Not enough flights to say — fewer than 100 in this window.
The year at GST
Month by month, Gustavus is too thin to read. Not enough flights to say — fewer than 100 in this window.
| Month | Share departures that left on time | Flights |
|---|---|---|
| January | Not enough flights to say | 0 |
| February | Not enough flights to say | 0 |
| March | Not enough flights to say | 0 |
| April | Not enough flights to say | 0 |
| May | Not enough flights to say | 0 |
| June | Not enough flights to say | 79 |
| July | Not enough flights to say | 93 |
| August | Not enough flights to say | 74 |
| September | Not enough flights to say | 0 |
| October | Not enough flights to say | 0 |
| November | Not enough flights to say | 0 |
| December | Not enough flights to say | 0 |
Airlines at GST
Every airline with at least 100 departures from GST, busiest first. These are that airline’s departures from this airport only — its record across the country sits on its own page.
| Airline | Left on time | Typical delay | Cancelled | Departures |
|---|---|---|---|---|
| Alaska Airlines | 86% | 69 min | 4.1% | 246 |
If you are connecting through GST
Of 246 scheduled arrivals into GST, 83.3% reached the gate less than 15 minutes behind schedule.
Work out a specific layover — pick the airport and the minutes you have, and the tool reads the same arrival records back as a share.
Busiest routes out of GST
Ranked by flights, with the share that arrived on time at the far end. Where a route carries enough flights for a page of its own the chip goes there; otherwise it goes to the destination airport.
- JNU 86.4% on time · 246 flights
GST in one number
Gustavus (GST)
Rank 358 of 363 US airports by departures. Steadiest stretch of the day: —. Hardest month: —.
Questions about GST
- How often are flights cancelled at GST?
- 4.1% of scheduled departures were cancelled over July 2023 through June 2026. Cancellations are counted against everything scheduled, not against everything that flew — a rate that looks small still adds up to real people in a rebooking line.