Flight number record
OO 6390
SkyWest Airlines · Colorado Springs to Dallas-Fort Worth
- Route
- COS → DFW
- Departs
- 08:25
- Flights
- 359
- Period
- July 2025 to June 2026
Historical statistics for July 2025 to June 2026, not live status. For today’s OO 6390, 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 6390 lands a B, 4 points better than the national rate of 77.6%. Roughly one flight in five arrives 15 minutes late or worse, and those flights are late by about 2.8 hours on average. That is a workable record, not a spotless one. That rests on 359 flights, with a median arrival 13 minutes early.
Key figures
On time
81.5%
Arrivals under 15 minutes late, of 351 completed flights
Avg delay
166 min
Across delayed arrivals only, not all flights
Cancelled
1.95%
National rate is 1.81%
1 hour+ late
10.3%
National rate is 8.1%
These figures cover 359 flights between July 2025 and June 2026. Beyond the headline rate, 10.3% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.
Schedule
When OO 6390 flies
OO 6390 flies COS to DFW without a single fixed slot. Its most common scheduled departure was 08:25, used on 61 of 359 flights, with 08:15 (49 flights) and 07:00 (42 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.
- Departs 08:2561 flights17.0%
- Departs 08:1549 flights13.6%
- Departs 07:0042 flights11.7%
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 08:25 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 84.1%, and OO 6390 runs 3 points worse at 81.5%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
Against the route
OO 6390 next to COS to DFW
Every carrier on COS to DFW combined arrived on time 77.8% of the time across 1,934 flights, so OO 6390 is 4 points ahead of it. SkyWest flew 609 flights on the same city pair under all its flight numbers, including this one, and those ran 80.3% on time. Across its whole network SkyWest Airlines managed 79.0%, which this flight beats by 3 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 6390thin sample | 359 | 81.5% | 166 min | 1.95% | B |
| All SkyWest Airlines on COS–DFW | 609 | 80.3% | 153 min | 2.79% | B |
| All carriers on COS–DFW | 1,934 | 77.8% | 125 min | 2.95% | B |
| SkyWest Airlines, whole network | 852,935 | 79.0% | 88 min | 1.77% | B |
Across the year
OO 6390 quarter by quarter
Quarter by quarter OO 6390 held fairly steady: 84.6% in Jul–Sep 2025, 84.8% in Oct–Dec 2025, 77.4% in Jan–Mar 2026 and 78.6% in Apr–Jun 2026. A spread of 7 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 202592 flights84.6%
- Oct–Dec 202592 flights84.8%
- Jan–Mar 202690 flights77.4%
- Apr–Jun 202685 flights78.6%
Scale runs 70% to 90%. Rows with fewer than 30 flights show a dash.
By weekday, OO 6390 did best on Sunday at 86.0% on time and worst on Saturday at 73.5%. Each day rests on about 51 flights, so a gap of 13 points is worth noticing but could still narrow in another year.
Delay causes
Why OO 6390 runs late
One category carries most of the weight here. Carrier accounts for 79% of the 11,000 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.
- 79%Carrier
- 9%Late-arriving aircraft
- 8%National Airspace System
- 4%Extreme weather
The largest share of delay minutes, 79%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 8,558 of the 11,000 delay minutes reported here. The split is drawn from 10,774 delay minutes reported on OO 6390.
Cancellations sit at 1.95% against a national 1.81%, which is ordinary. Diversions add another 0.28%.
Connections and routes
What a delay on this flight costs
For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 10.3% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum here, and two hours if the onward flight is on a separate ticket.
The 592 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.
The same number turns up on two other city pairs in the data, including DFW to COS (36) and COS to ORD (1), but none flew often enough under OO 6390 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to COS to DFW only.
One caution: this is a thin sample. 359 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 6390
For a booking, read OO 6390 as 81.5% on time with 1.95% cancelled over 359 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- COS to DFW, every carrier and departure
- DFW to COS, the return direction
- American Airlines 1170 on the same route64.8%
- Dallas/Fort Worth International (DFW) delay statistics
- SkyWest Airlines on-time record
- Every SkyWest Airlines flight number with a record
- The most and least reliable flight numbers in the US
- How often a connection fails at the major US hubs
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.