Flight number record
OO 5898
SkyWest Airlines · Springfield to Denver
- Route
- SGF → DEN
- Departs
- 09:03
- Flights
- 363
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 5898, 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 5898 earns an A+. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 9 points better than the national rate of 77.3%. When something does go wrong the average delay runs about an hour. That rests on 363 flights, with a median arrival 4 minutes early.
Set against the rest of the country, OO 5898's record is 9 points better than the US average of 77.3%. That gap is worth roughly 88 fewer late arrivals for every thousand flights.
Key figures
On time
86.1%
Arrivals under 15 minutes late, of 360 completed flights
Avg delay
65 min
Across delayed arrivals only, not all flights
Cancelled
0.83%
National rate is 1.89%
1 hour+ late
5.0%
National rate is 8.3%
These figures cover 363 flights between September 2025 and August 2026. The median arrival is 4 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.
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Schedule
When OO 5898 flies
OO 5898 flies SGF to DEN without a single fixed slot. Its most common scheduled departure was 09:03, used on 102 of 363 flights, with 09:10 (78 flights) and 09:05 (51 flights) next.
- Departs 09:03102 flights28.1%
- Departs 09:1078 flights21.5%
- Departs 09:0551 flights14.0%
Scale runs 0% to 100%.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 09:03 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and OO 5898 runs 2 points better at 86.1%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
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Against the route
OO 5898 next to SGF to DEN
Every carrier on SGF to DEN combined arrived on time 80.5% of the time across 1,319 flights, so OO 5898 is 6 points ahead of it. Across its whole network SkyWest Airlines managed 78.7%, which this flight beats by 7 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 5898thin sample | 363 | 86.1% | 65 min | 0.83% | A+ |
| All SkyWest Airlines on SGF–DEN | 1,319 | 80.5% | 80 min | 0.68% | B+ |
| All carriers on SGF–DEN | 1,319 | 80.5% | 80 min | 0.68% | B+ |
| SkyWest Airlines, whole network | 855,406 | 78.7% | 88 min | 1.79% | B |
Across the year
OO 5898 quarter by quarter
Quarter by quarter OO 5898 held fairly steady: 83.3% in Jul–Sep 2025, 86.8% in Oct–Dec 2025, 85.2% in Jan–Mar 2026, 88.8% in Apr–Jun 2026 and 83.9% in Jul–Sep 2026. A spread of 6 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 202530 flights83.3%
- Oct–Dec 202591 flights86.8%
- Jan–Mar 202690 flights85.2%
- Apr–Jun 202690 flights88.8%
- Jul–Sep 202662 flights83.9%
Scale runs 75% to 95%.
By weekday, OO 5898 ranged from 78.8% on Tuesday to 90.2% on Sunday. With about 52 flights behind each day, a spread of 11 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late OO 5898 runs when it is late
OO 5898 often beats the schedule: 101 of 360 completed flights, 28%, arrived 15 minutes or more early. The 50 late arrivals split 21 under half an hour, 11 between 30 and 60 minutes, and 18 an hour or more.
- 15+ min early101 flights28.1%
- Within 15 min209 flights58.1%
- 15–29 min late21 flights5.8%
- 30–59 min late11 flights3.1%
- 1–2 hours late8 flights2.2%
- 2+ hours late10 flights2.8%
Scale runs 0% to 100%.
Share of 360 completed flights by arrival against schedule.
8 of 39 late departures made up the time and arrived on time, 21% of them. In the other direction, 19 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at DEN.
The worst days
Worst days for OO 5898
The latest arrival of the period was on 1 December 2025, 4 hours 22 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The five worst days are spread across December, February and August, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 1 December 2025 | 4 hours 22 minutes | Carrier |
| 19 December 2025 | 3 hours 51 minutes | National Airspace System |
| 14 February 2026 | 3 hours 19 minutes | Late-arriving aircraft |
| 17 February 2026 | 2 hours 58 minutes | National Airspace System |
| 4 August 2026 | 2 hours 46 minutes | Carrier |
Delay causes
Why OO 5898 runs late
Carrier accounts for 62% of the 3,224 delay minutes carriers reported here, and the remaining four split what is left.
- 62%Carrier
- 30%National Airspace System
- 8%Late-arriving aircraft
The largest share of delay minutes, 62%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 2,000 of the 3,224 delay minutes reported here. The split is drawn from 3,224 delay minutes reported on OO 5898.
Cancellations are rare at 0.83%, below the national 1.89% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.
Connections and routes
What a delay on this flight costs
5.0% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about an hour, which a normal layover absorbs.
The 637 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.
Every one of the 363 flights under OO 5898 in the data flew SGF to DEN. The number was not reused on any other city pair, which makes this a clean record of one route.
One caution: this is a thin sample. 363 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 5898
For a booking, OO 5898 has one of the better records a US domestic flight can show: 86.1% on time and 0.83% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- SGF to DEN, every carrier and departure
- DEN to SGF, the return direction
- SkyWest Airlines 5404 on the same route67.5%
- Denver International (DEN) 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
- Worst months to fly in the US, ranked by the data
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, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.