Airport · SIT · Sitka, Alaska
Sitka, AK
Sitka, AK posts below-median on-time performance among the 382 tracked U.S. airports, as a mid-size U.S. airport. According to the U.S. DOT Bureau of Transportation Statistics, drawn from 14,900 flights (2020–2025); its biggest delay driver is late aircraft.
Data updated 2026-06-13
- 82.7%
- On-time
- Top 58%
- on-time, US airports
- 62 min
- Delay when late
- 1.05%
- Cancelled
Key Performance Metrics
Total Flights
14,900
Best Month
May 94.8%
Worst Month
Jan 91.3%
Delayed
2,581
Cancelled
157
SIT on-time rate vs. the national average
Ahead of the U.S. average across all 382 tracked airports.
Where SIT sits among all 382 tracked airports
SIT's 82.7% on-time rate falls in the 80-85% band, the 192-airport band it shares.
National on-time-rate distribution
- 60-65% 1
1 airport between 60% and 65% on-time
1 airports
- 65-70% 4
4 airports between 65% and 70% on-time
4 airports
- 70-75% 9
9 airports between 70% and 75% on-time
9 airports
- 75-80% 48
48 airports between 75% and 80% on-time
48 airports
- 80-85%
192 airports between 80% and 85% on-time
192 airports
- 85-90%
116 airports between 85% and 90% on-time
116 airports
- 90-95% 12
12 airports between 90% and 95% on-time
12 airports
What this shows SIT is marked in the 80-85% band.
Delay Cause Breakdown
Top delay cause: Late Aircraft. Total delay minutes: 70,932.
SIT - seasonal on-time pattern
Best: May (94.8%) · worst: January (91.3%)
Seasonal Performance Patterns
Monthly averages across all years of data. Best month: May (94.8% on-time). Most delays: January (91.3% on-time).
| Month | Avg Flights | Avg Delayed | Avg Cancelled | On-Time % |
|---|---|---|---|---|
| December | 163 | 38 | 4 | 91.4% |
| November | 158 | 32 | 2 | 92.2% |
| October | 169 | 24 | 2 | 93.1% |
| September | 233 | 31 | 1 | 93.8% |
| August | 327 | 64 | 3 | 91.6% |
| July | 330 | 57 | 2 | 93.5% |
| June | 298 | 50 | 3 | 93.8% |
| May | 192 | 26 | 1 | 94.8% |
| April | 140 | 20 | 3 | 94.2% |
| March | 163 | 28 | 1 | 93.1% |
| February | 149 | 26 | 2 | 93.6% |
| January | 162 | 36 | 3 | 91.3% |
Year-Over-Year Performance
Annual flight volume and on-time trends at SIT.
SIT - on-time rate by year
2020–2025, year-over-year trend.
| Year | Flights | Delayed | Cancelled | On-Time % |
|---|---|---|---|---|
| 2025 | 2,658 | 226 | 20 | 91.5% |
| 2024 | 2,842 | 190 | 24 | 93.3% |
| 2023 | 2,807 | 158 | 22 | 94.4% |
| 2022 | 2,856 | 222 | 56 | 92.2% |
| 2021 | 2,208 | 155 | 19 | 93% |
| 2020 | 1,529 | 85 | 16 | 94.4% |
Cancellation & Diversion Analysis
Flight disruption statistics for Sitka, AK.
Cancellation Rate
1.05%
157 of 14,900 flights
Diversion Rate
0.53%
79 of 14,900 flights
Delay Rate
17.3%
2,581 of 14,900 flights
Monthly Performance
Recent 24 months of flight data.
| Period | Flights | Dep Delayed | Arr Delayed | Cancelled | Diverted |
|---|---|---|---|---|---|
| Dec 2025 | 180 | 25 | 31 | 6 | 3 |
| Nov 2025 | 178 | 12 | 15 | 1 | 0 |
| Oct 2025 | 192 | 10 | 9 | 5 | 0 |
| Sep 2025 | 240 | 17 | 16 | 1 | 1 |
| Aug 2025 | 285 | 38 | 43 | 1 | 2 |
| Jul 2025 | 310 | 32 | 48 | 2 | 0 |
| Jun 2025 | 300 | 31 | 38 | 1 | 0 |
| May 2025 | 255 | 19 | 27 | 1 | 0 |
| Apr 2025 | 180 | 9 | 22 | 0 | 0 |
| Mar 2025 | 186 | 9 | 21 | 1 | 2 |
| Feb 2025 | 168 | 10 | 10 | 0 | 2 |
| Jan 2025 | 184 | 14 | 22 | 1 | 4 |
| Dec 2024 | 184 | 9 | 20 | 1 | 3 |
| Nov 2024 | 178 | 10 | 17 | 0 | 1 |
| Oct 2024 | 186 | 11 | 11 | 1 | 1 |
| Sep 2024 | 255 | 15 | 22 | 1 | 1 |
| Aug 2024 | 347 | 34 | 48 | 7 | 1 |
| Jul 2024 | 372 | 26 | 50 | 1 | 0 |
| Jun 2024 | 347 | 24 | 49 | 3 | 0 |
| May 2024 | 249 | 15 | 29 | 0 | 1 |
| Apr 2024 | 180 | 8 | 8 | 1 | 0 |
| Mar 2024 | 186 | 9 | 14 | 3 | 1 |
| Feb 2024 | 174 | 10 | 12 | 0 | 1 |
| Jan 2024 | 184 | 19 | 30 | 6 | 0 |
Top Routes from SIT
Busiest routes to and from Sitka, AK.
| Route | Flights | On-Time | Distance |
|---|---|---|---|
| JNU (Juneau) → SIT (Sitka) | 3,876 | 83.8% | 95 mi |
| SIT (Sitka) → JNU (Juneau) | 3,876 | 86.1% | 95 mi |
| SIT (Sitka) → SEA (Seattle) | 1,678 | 78.8% | 861 mi |
| SEA (Seattle) → SIT (Sitka) | 1,647 | 74.4% | 861 mi |
| KTN (Ketchikan) → SIT (Sitka) | 1,593 | 73.8% | 183 mi |
| SIT (Sitka) → KTN (Ketchikan) | 1,563 | 87.5% | 183 mi |
Airports With a Similar On-Time Rate
Other U.S. airports nationwide whose on-time rate is closest to Sitka, AK's 82.7%.
Other Airports in Alaska
Compare performance with other Alaska airports.
Anchorage, AK
Anchorage · 214,443 flights
Juneau, AK
Juneau · 52,533 flights
Fairbanks, AK
Fairbanks · 44,233 flights
Ketchikan, AK
Ketchikan · 27,238 flights
Kodiak, AK
Kodiak · 9,654 flights
Petersburg, AK
Petersburg · 8,696 flights
Wrangell, AK
Wrangell · 8,696 flights
Yakutat, AK
Yakutat · 8,692 flights
Keep exploring
More flight data around Sitka, AK.
Alaska flight data
Statewide on-time and delay aggregates, plus every reporting airport in Alaska.
View AK data →Airport rankings
See where SIT sits among U.S. airports on on-time rate and average delay.
Best on-time airports →Compare airports
Put SIT head-to-head with another airport on delays and reliability.
Open comparison tool →What the Data Says About SIT
Sitka, AK in Sitka, Alaska handled 14,900 flights in the Bureau of Transportation Statistics dataset between 2020 and 2025, posting a 82.7% on-time departure rate. Of those flights, 2,581 experienced delays, 157 were cancelled, and 79 were diverted. The cancellation rate works out to 1.05%, the diversion rate to 0.53%, and the average delay when departures run late is 62.2 minutes. These figures are the baseline for comparing SIT against other airports in the same state and nationally.
Breaking down what drives delays at SIT, Late Aircraft leads the pack. Late Aircraft accounts for 43.3% of total delay minutes, followed by Carrier at 33.5% and NAS (National Aviation System) at 11.8%. Weather contributes 9.5% of delay minutes at this airport, while security holds the smallest share at 1.9%. Travelers often overestimate the weather share; the BTS categorization shows late-arriving aircraft and carrier operations as the larger contributors.
Seasonally, May runs the cleanest at SIT with a 94.8% on-time rate, while January is the roughest at 91.3% - a 4-point swing between best and worst month. Volume peaks in July, when average flights hit 330. The busiest route connecting SIT is to JNU (Juneau), with 3,876 flights at a 83.8% on-time rate. Combine these numbers - 82.7% on-time, 62.2-minute average delay, 1.05% cancellation rate, and you have a concrete picture of departure reliability at Sitka, AK.
Frequently Asked Questions
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Flight Guides
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Using SIT's data
An airport-level on-time rate is a starting point, not a guarantee for your specific flight.
- Check the busiest route from SIT before you book a connection. See top routes
- Travel in May rather than January if your dates are flexible. Seasonal patterns
- Scores vary by airline and route within the same airport; check the specific carrier you're flying. Browse airlines
On-time rate reflects the BTS historical average across all reporting carriers at this airport, not any single flight or airline.
Related
Source: U.S. Bureau of Transportation Statistics (BTS) Airline on-time performance and operational reliability · 2025
Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. Airport figures are computed directly from BTS On-Time Performance data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.