SUX to ORD flight delays
Sioux City, IA (SUX) Chicago, IL (ORD) · 436 miles
730 flights · July 2024 – July 2026 · US Bureau of Transportation Statistics
75.35%
Arrived on time
Within 15 minutes of schedule
1.78%
Cancelled
Share of scheduled flights
106 min
When late, late by
Average across delayed arrivals
27 min
Delay per flight
Averaged over every flight flown
What the record says about this route
The season swings this route hard. In April it ran 51.9 points more punctual than in December — a difference bigger than the one between the best and worst airlines on most routes. If the date is flexible, it is worth more than the carrier.
The two directions do not behave alike. ORD to SUX arrives on time 12.6 points less often than the outbound. Delay accumulates through the flying day, so whichever direction is scheduled later tends to carry the worse record — which is an argument for booking the morning departure if the choice exists.
Only SkyWest Airlines flies this route in the published record, so there is no choice to weigh — the route's figures and the airline's are the same figures.
Flights from Sioux City to Chicago run late more often than the average route, though not severely.
Which airline should you fly on this route?
Over July 2024 – July 2026, SkyWest Airlines arrived on time most often on SUX to ORD. Flights ran closest to schedule in October and worst in December.
Every airline on SUX to ORD
Ranked by how many flights each one operated. A carrier with fewer than 100 flights in the period is listed but not graded.
| Airline | Flights | On time | Cancelled | Avg delay | Grade |
|---|---|---|---|---|---|
| SkyWest Airlines | 730 | 75.35% | 1.78% | 106 min | D |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
The return leg
ORD to SUX Chicago back to Sioux City 62.75% on time FOther routes from Sioux City
Common questions
Are flights from Sioux City to Chicago usually delayed?
75.35% of flights on the SUX to ORD route arrived within 15 minutes of schedule, so roughly 2 in every ten arrived late. That is about the same as the average route in this record.
Which airlines fly from Sioux City to Chicago?
Only SkyWest Airlines appears in the published record on this route, with 730 flights and 75.35% arriving on time.
How often are SUX to ORD flights cancelled?
1.78% of scheduled flights did not operate — about 18 in every thousand. That is in the normal range.
What is the best month to fly Sioux City to Chicago?
April, when 93.3% of flights arrived on time. The worst was December at 41.4%.
When SUX to ORD flights are late, how late are they?
About 106 minutes on average across the flights that arrived more than 15 minutes behind schedule.
What these figures do and do not tell you
Everything on this page is counted from the flights that actually operated on SUX to ORD during July 2024 – July 2026, as reported by the airlines to the US Bureau of Transportation Statistics. "On time" is the federal definition: arriving at the gate within 15 minutes of the scheduled time.
A route's record is a description of the past, not a forecast. Weather, air traffic control and the aircraft's earlier flights that day drive most delays, and none of them are predictable from a historical rate. What the record does tell you is whether this route runs late more often than others, and which carrier on it has the better history — which is the part you can actually act on when you book.
Cancellations are counted separately from delays because they are a different problem for a traveller: a late flight still gets you there. How the grade is calculated →