Flight number record
OO 3917
SkyWest Airlines · Detroit to Fort Wayne
- Route
- DTW → FWA
- Departs
- 20:00
- Flights
- 279
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 3917, 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 3917 sits in the middle of the pack with a C. About seven flights in ten arrive on time by the DOT's definition, 7 points worse than the national rate of 77.3%. The late ones land close to two hours behind schedule. That rests on 279 flights, with a median arrival 2 minutes early.
The national on-time rate over the same period is 77.3%, so OO 3917 runs 7 points behind the country as a whole. Across a thousand flights that is about 71 extra late arrivals.
Key figures
On time
70.2%
Arrivals under 15 minutes late, of 275 completed flights
Avg delay
110 min
Across delayed arrivals only, not all flights
Cancelled
1.43%
National rate is 1.89%
1 hour+ late
16.4%
National rate is 8.3%
These figures cover 279 flights between September 2025 and August 2026. Beyond the headline rate, 16.4% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When OO 3917 flies
OO 3917 flies DTW to FWA without a single fixed slot. Its most common scheduled departure was 20:00, used on 75 of 279 flights, with 19:59 (62 flights) and 19:45 (54 flights) next.
- Departs 20:0075 flights26.9%
- Departs 19:5962 flights22.2%
- Departs 19:4554 flights19.4%
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 20:00 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.1%, and OO 3917 runs level with that at 70.2%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
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Against the route
OO 3917 next to DTW to FWA
Every carrier on DTW to FWA combined arrived on time 73.7% of the time across 648 flights, so OO 3917 is 4 points behind it. Across its whole network SkyWest Airlines managed 78.7%, which this flight trails by 9 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 3917thin sample | 279 | 70.2% | 110 min | 1.43% | C |
| All SkyWest Airlines on DTW–FWA | 648 | 73.7% | 97 min | 0.62% | C+ |
| All carriers on DTW–FWA | 648 | 73.7% | 97 min | 0.62% | C+ |
| SkyWest Airlines, whole network | 855,406 | 78.7% | 88 min | 1.79% | B |
Across the year
OO 3917 quarter by quarter
OO 3917 did not run the same all year. Its best quarter was Jul–Sep 2025 at 86.7% on time and its weakest Jan–Mar 2026 at 60.9%, a swing of 26 points on roughly 70 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 202530 flights86.7%
- Oct–Dec 202592 flights65.9%
- Jan–Mar 202690 flights60.9%
- Apr–Jun 202667 flights80.6%
Scale runs 50% to 90%.
By weekday, OO 3917 did best on Saturday at 79.5% on time and worst on Sunday at 52.6%. Each day rests on about 40 flights, so a gap of 27 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late OO 3917 runs when it is late
When OO 3917 is late it tends to be very late: 45 of its 82 late arrivals were an hour or more behind, and 25 were two hours or more.
- 15+ min early41 flights14.9%
- Within 15 min152 flights55.3%
- 15–29 min late16 flights5.8%
- 30–59 min late21 flights7.6%
- 1–2 hours late20 flights7.3%
- 2+ hours late25 flights9.1%
Scale runs 0% to 100%.
Share of 275 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 79 departures that left 15 minutes late or more, only 9 made it up before arrival. 12 flights left on time and still arrived late.
The worst days
Worst days for OO 3917
The latest arrival of the period was on 17 March 2026, 14 hours 25 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on four of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 17 March 2026 | 14 hours 25 minutes | Carrier |
| 7 February 2026 | 11 hours 17 minutes | Carrier |
| 30 December 2025 | 7 hours 51 minutes | Carrier |
| 29 December 2025 | 5 hours 59 minutes | Extreme weather |
| 22 February 2026 | 4 hours 9 minutes | Carrier |
Delay causes
Why OO 3917 runs late
Carrier accounts for 70% of the 9,048 delay minutes carriers reported here, and the remaining four split what is left.
- 70%Carrier
- 19%Extreme weather
- 11%National Airspace System
Extreme weather accounts for 19% 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 3.2 times the usual weather exposure. The split is drawn from 9,048 delay minutes reported on OO 3917.
Cancellations sit at 1.43% against a national 1.89%, which is ordinary. Diversions add another 0.00%.
Connections and routes
What a delay on this flight costs
16.4% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection here, and two hours if the onward flight is on a separate ticket.
The same number turns up on two other city pairs in the data, including DTW to TVC (29) and TVC to DTW (29), but none flew often enough under OO 3917 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to DTW to FWA only.
One caution: this is a thin sample. 279 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 3917
For a booking, OO 3917 is a flight to put a long connection behind. 16.4% of its completed flights arrived an hour or more late, which a short layover will not absorb. If the onward flight is on a separate ticket, the risk sits with you.
Related
Where to go next
- Detroit Metropolitan Wayne County (DTW) 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, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.