ORD to SUX flight delays & on-time performance
Nonstop flights from Chicago O'Hare International Airport to Sioux Gateway Airport / Brigadier General Bud Day Field · 436 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at ORD or SUX right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Chicago (ORD) to Sioux City (SUX) arrived on time 62% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 4.9% were cancelled, and 16% arrived an hour or more late.
- SkyWest Airlines is the only airline reporting nonstop flights on this route.
- Departures scheduled around 9pm did best (75% on time); around 8pm did worst (40%).
- Thursday was the most reliable day to fly (73% on time) and Saturday the least (52%).
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (51%).
Which airline is most on time from ORD to SUX?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| SkyWest AirlinesRegional airline operating flights for United Express, Delta Connection, American Eagle and Alaska. | 62% | 4.9% | 42 min | 16.4% | 365 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 3pm61%143 flights
- 4pm44%64 flights
- 8pm40%18 flights
- 9pm75%136 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday70%9.6% cancelled
- Tuesday63%0.0% cancelled
- Wednesday56%1.9% cancelled
- Thursday73%1.9% cancelled
- Friday60%11.3% cancelled
- Saturday52%3.8% cancelled
- Sunday59%5.8% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Airline (crew, maintenance, cleaning, fueling)51%
- Late-arriving aircraft27%
- Air traffic control & airport congestion17%
- Extreme weather5%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather78%
- Air traffic control & airport congestion17%
- Airline (crew, maintenance, cleaning, fueling)6%
- Security0%
ORD to SUX: common questions
- How often are ORD to SUX flights on time?
- 62% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Chicago to Sioux City cancelled?
- 4.9% of scheduled flights were cancelled (18 of 365).
- How long are typical delays?
- Across all flights the average arrival delay was 42 min (early arrivals count as zero). Flights that were late arrived 107 min behind schedule on average, and 16.4% of flights were an hour or more late.
- How long is taxi time at ORD?
- Flights on this route spent 33 min taxiing from the gate to takeoff on average.
Related routes
Return trip: SUX to ORD — 78% on time
More flights from Chicago
More flights to Sioux City
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: ORD → SUX, nonstop flights by US airlines that report to the DOT. How we calculate this.