Route · SUX → DEN · 2020–2025 BTS data
Sioux City to Denver
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), SUX to DEN (Sioux City to Denver) ranks #4259 of 4927 tracked domestic routes by total flights (most flights = #1).
Data updated 2026-06-13
- 78.7%
- On-time
- -0.3 pts
- vs US avg
- 109 min
- Delay when late
- 1,350
- Flights
- #4259 of 4927
- Corpus placement
Cancelled
1.6%
Best Month
N/A
Worst Month
N/A
Distance
466 mi
Carriers
1
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 31 | 13 | 1 | 0 | OO |
| Oct 2025 | 31 | 9 | 0 | 0 | OO |
| Sep 2025 | 30 | 9 | 0 | 0 | OO |
| Aug 2025 | 31 | 16 | 2 | 0 | OO |
| Jul 2025 | 31 | 16 | 2 | 0 | OO |
| Jun 2025 | 30 | 20 | 0 | 1 | OO |
| May 2025 | 31 | 11 | 1 | 1 | OO |
| Apr 2025 | 30 | 9 | 0 | 1 | OO |
| Mar 2025 | 31 | 7 | 1 | 0 | OO |
| Jan 2025 | 31 | 10 | 0 | 0 | OO |
| Dec 2024 | 31 | 2 | 0 | 0 | OO |
| Oct 2024 | 31 | 10 | 0 | 0 | OO |
| Sep 2024 | 30 | 6 | 0 | 0 | OO |
| Aug 2024 | 31 | 11 | 0 | 0 | OO |
| Jul 2024 | 31 | 11 | 0 | 0 | OO |
| Jun 2024 | 30 | 9 | 0 | 0 | OO |
| May 2024 | 31 | 8 | 0 | 0 | OO |
| Apr 2024 | 31 | 3 | 0 | 0 | OO |
| Mar 2024 | 31 | 4 | 1 | 0 | OO |
| Jan 2024 | 31 | 1 | 4 | 0 | OO |
| Dec 2023 | 31 | 5 | 0 | 0 | OO |
| Nov 2023 | 30 | 3 | 0 | 1 | OO |
| Oct 2023 | 31 | 5 | 0 | 0 | OO |
| Sep 2023 | 30 | 3 | 0 | 0 | OO |
SUX–DEN seasonal on-time pattern
Best: November (95.0%) · weakest: June (65.8%)
Strongest calendar month
November
95.0% on-time · ~30 flights/mo
Busiest calendar month
January
~31 flights/mo avg
Weakest calendar month
June
65.8% on-time · ~30 flights/mo
Cancellation Rate
1.6%
12 of 737 flights
Diversion Rate
0.5%
4 of 737 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
SUX - Sioux City
Full on-time, delay-cause, and seasonal performance for Sioux City, IA.
SUX on-time profileDEN - Denver
Full on-time, delay-cause, and seasonal performance for Denver, CO.
DEN on-time profileCompare the two airports
See SUX and DEN side by side on delays, cancellations, and reliability.
Compare SUX vs DENOrigin-hub reliability standing
Mid-pack among SUX departures
From SUX, this corridor sits with 2 other 75–85% on-time routes out of 2 tracked departures, not the hub's reliability leaders (0 at ≥85%) and not the softest ( 0 below 75%). Destination: Denver · fleet on-time rank #3622 of 4927.
Similar routes
Other BTS-tracked routes with comparable performance or trip length to SUX–DEN.
Routes with a similar on-time rate
What the Data Says About SUX to DEN
1,350 tracked flights put the SUX to DEN pairing (Sioux City to Denver) at a 78.7% on-time rate, squarely in line with the wider network. Delays that do occur run 108.6 minutes on average. Across the 466-mile route and its 1 carrier, the trailing 24 months show 1.6% cancelled and 0.5% diverted (737 flights sampled).
Monthly performance data for this route did not show a clear best/worst split in the sample window; review the monthly table above for period-by-period detail.
On the multi-year calendar, SUX–DEN peaks in November at 95.0% on-time while January carries the heaviest traffic (~31 flights per month) ; the softest month is June at 65.8%, a 29.2-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does SUX to DEN rank among US routes by traffic? ▼
How often are flights delayed from SUX to DEN? ▼
What is the cancellation rate for SUX to DEN? ▼
How far is the flight from SUX to DEN? ▼
Airports on this route
Data source
Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.
Read our methodology - how this data is sourced, computed, and verified.
Using SUX–DEN data
SUX–DEN is mid-pack at 78.7% on-time; month and carrier mix move more than the corridor headline.
- Compare SUX and DEN airport profiles: delay causes and top routes differ even on the same corridor. SUX airport
- If your dates flex, November (95.0% on-time) beats June (65.8%) on this corridor. Seasonal chart
- 4 other routes post a similar 78.7% on-time rate; compare before you commit to this pairing. Similar routes
On-time rate reflects the BTS historical average across all reporting carriers on this origin–destination pair, not any single flight or booking recommendation.
Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.