Flight number record

OO 5700

SkyWest Airlines · Denver to Sioux Falls

Route: DEN → FSD
Departs: 21:00
Flights: 360
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s OO 5700, check with SkyWest Airlines. SkyWest Airlines flies under contract for larger airlines, so a ticket for this flight may show a different airline code and number.

OO 5700 lands a B, about a point better than the national rate of 77.6%. About one flight in five arrives 15 minutes late or worse, and those flights are late by an hour and a half on average. That is a workable record, not a spotless one. That rests on 360 flights, with a median arrival 10 minutes early.

On time

78.7%

Arrivals under 15 minutes late, of 352 completed flights

Avg delay

93 min

Across delayed arrivals only, not all flights

Cancelled

1.94%

National rate is 1.81%

1 hour+ late

7.1%

National rate is 8.1%

These figures cover 360 flights between July 2025 and June 2026. The median arrival is 10 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.

Schedule

When OO 5700 flies

OO 5700 flies DEN to FSD without a single fixed slot. Its most common scheduled departure was 21:00, used on 108 of 360 flights, with 20:50 (67 flights) and 21:10 (41 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 21:00108 flights30.0%
Departs 20:5067 flights18.6%
Departs 21:1041 flights11.4%

Scale runs 0% to 100%. Rows with fewer than 30 flights show a dash.

Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.

A 21:00 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.5%, and OO 5700 runs 8 points better at 78.7%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.

Against the route

OO 5700 next to DEN to FSD

Every carrier on DEN to FSD combined arrived on time 81.6% of the time across 1,831 flights, so OO 5700 is 3 points behind it. SkyWest flew 1,307 flights on the same city pair under all its flight numbers, including this one, and those ran 84.7% on time. Across its whole network SkyWest Airlines managed 79.0%, close to this flight's figure.

OO 5700 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 5700thin sample	360	78.7%	93 min	1.94%	B
All SkyWest Airlines on DEN–FSD	1,307	84.7%	79 min	1.07%	B
All carriers on DEN–FSD	1,831	81.6%	85 min	0.93%	B+
SkyWest Airlines, whole network	852,935	79.0%	88 min	1.77%	B

Across the year

OO 5700 quarter by quarter

OO 5700 did not run the same all year. Its best quarter was Oct–Dec 2025 at 90.8% on time and its weakest Jul–Sep 2025 at 63.6%, a swing of 27 points on roughly 90 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.

Jul–Sep 202591 flights63.6%
Oct–Dec 202591 flights90.8%
Jan–Mar 202688 flights86.2%
Apr–Jun 202690 flights74.4%

Scale runs 55% to 95%. Rows with fewer than 30 flights show a dash.

By weekday, OO 5700 ranged from 76.0% on Friday to 84.0% on Monday. With about 51 flights behind each day, a spread of 8 points is inside normal variation, so the day you fly is not worth changing for this flight.

Delay causes

Why OO 5700 runs late

Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 6,992 reported delay minutes.

Extreme weather
35%
Late-arriving aircraft
23%
Carrier
22%
National Airspace System
20%

Extreme weather accounts for 35% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the quarterly figures above are the more useful view of the risk. The national share is 6%, so this operation carries roughly 5.5 times the usual weather exposure. The split is drawn from 6,992 delay minutes reported on OO 5700.

Cancellations sit at 1.94% against a national 1.81%, which is ordinary. Diversions add another 0.28%.

Connections and routes

What a delay on this flight costs

7.1% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last an hour and a half, which a normal layover absorbs.

The same number turns up on two other city pairs in the data, including SAF to DEN (35) and ORD to LEX (1), but none flew often enough under OO 5700 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to DEN to FSD only.

One caution: this is a thin sample. 360 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.

What to do with this

Booking OO 5700

For a booking, read OO 5700 as 78.7% on time with 1.94% cancelled over 360 flights. Those are rates from the past twelve months, not a forecast for any particular day.

Where to go next

A flight number here means SkyWest Airlines’s own number as it reports to the DOT. How the figures are computed is on the methodology page.

Source: US DOT Bureau of Transportation Statistics, on-time performance data, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures