Sioux Gateway Airport / Brigadier General Bud Day Field (SUX): Delays & On-Time Performance
Data through July 2026
Sioux Gateway Airport / Brigadier General Bud Day Field (SUX) in Sioux City, IA is a middle-of-the-pack performer: 77% of departures are on time, within a few points of the national 78%. It hosts 1 airlines flying 2 departures a day to 2 destinations, with cancellations at 1.9%.
- Departures on-time
- 77%
- left <15 min late
- Avg dep delay
- 27 min
- Arrivals on-time
- 71%
- Cancelled
- 1.9%
- Destinations
- 2
- nonstop
- Airlines
- 1
Plan your departure from SUX
The choices most likely to improve your odds, based on this airport’s historical record.
- Best departure time
- Around 7 a.m.
- 87% on-time
- Best day to fly
- Tuesday
- 79% on-time
- Cancellation risk
- 1.9%
- above the US average
Monthly on-time trend
Best time of day to depart from SUX
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 62% | 40 min |
| Tuesdaybest | 79% | 20 min |
| Wednesday | 77% | 22 min |
| Thursday | 72% | 25 min |
| Friday | 68% | 35 min |
| Saturday | 70% | 38 min |
| Sunday | 71% | 29 min |
Busiest routes from SUX
| Route | Flights/12mo | On-time | Avg delay |
|---|---|---|---|
| SUX → DEN (Denver) | 518 | 68% | 33 min |
| SUX → ORD (Chicago) | 365 | 75% | 27 min |
Where flights into SUX come from
| Route | Flights/12mo | On-time | Avg delay |
|---|---|---|---|
| DEN (Denver) → SUX | 518 | 79% | 16 min |
| ORD (Chicago) → SUX | 365 | 62% | 43 min |
What causes delays at SUX
Share of total delay minutes by cause, as reported by carriers to the US DOT, weighted across routes departing SUX.
- Late-arriving aircraft26%
- Airline operations42%
- National airspace system21%
- Weather11%
Alternative airports near Sioux City
Other airports within 120 miles, compared on departure reliability.
| Airport | Distance | On-time departures | Avg delay |
|---|---|---|---|
| OMA — Eppley Airfield | 80 mi | 82% | 15 min |
| FSD — Sioux Falls Regional Airport | 84 mi | 80% | 20 min |
| LNK — Lincoln Airport | 109 mi | 80% | 22 min |
| FOD — Fort Dodge Regional Airport | 112 mi | 78% | 29 min |
Compare the airport-level record first, then check the exact route you plan to book.
Frequently asked questions
- How often are flights delayed at SUX?
- 23% of departures from Sioux Gateway Airport / Brigadier General Bud Day Field left 15+ minutes late between 2024-07 and 2026-07, with an average departure delay of 27 minutes. The national on-time average over the same period was 78%.
- What is the best time of day to depart from SUX?
- Flights scheduled around 7 a.m. depart on time 87% of the time at SUX, versus 63% around 6 p.m.. Booking before noon is the usual rule of thumb here.
- How often are flights cancelled at SUX?
- 1.9% of scheduled departures from SUX were cancelled in this period, compared with a national rate of 1.6%.
Popular route pages from this airport
Related guides
Based on 1,674 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.