Flight number record
OO 3781
SkyWest Airlines · Medford to Seattle
- Route
- MFR → SEA
- Departs
- 06:15
- Flights
- 255
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 3781, 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 3781 earns an A+. Nearly every flight arrives inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 20 points better than the national rate of 77.3%. When something does go wrong the average delay runs roughly 50 minutes. That rests on 255 flights, with a median arrival 16 minutes early.
Set against the rest of the country, OO 3781's record is 20 points better than the US average of 77.3%. That gap is worth roughly 203 fewer late arrivals for every thousand flights.
Key figures
On time
97.6%
Arrivals under 15 minutes late, of 251 completed flights
Avg delay
52 min
Across delayed arrivals only, not all flights
Cancelled
0.78%
National rate is 1.89%
1 hour+ late
0.4%
National rate is 8.3%
These figures cover 255 flights between September 2025 and August 2026. The median arrival is 16 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 3781 flies
OO 3781 flies MFR to SEA without a single fixed slot. Its most common scheduled departure was 06:15, used on 86 of 255 flights, with 06:00 (57 flights) and 06:05 (39 flights) next.
- Departs 06:1586 flights33.7%
- Departs 06:0057 flights22.4%
- Departs 06:0539 flights15.3%
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 06:15 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and OO 3781 runs 8 points better at 97.6%. 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 3781 next to MFR to SEA
Every carrier on MFR to SEA combined arrived on time 89.4% of the time across 1,321 flights, so OO 3781 is 8 points ahead of it. Across its whole network SkyWest Airlines managed 78.7%, which this flight beats by 19 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 3781thin sample | 255 | 97.6% | 52 min | 0.78% | A+ |
| All SkyWest Airlines on MFR–SEA | 1,321 | 89.4% | 66 min | 1.21% | A |
| All carriers on MFR–SEA | 1,321 | 89.4% | 66 min | 1.21% | A |
| SkyWest Airlines, whole network | 855,406 | 78.7% | 88 min | 1.79% | B |
Across the year
OO 3781 quarter by quarter
Quarter by quarter OO 3781 held fairly steady: 97.7% in Jan–Mar 2026, 97.8% in Apr–Jun 2026 and 96.8% in Jul–Sep 2026. A spread of about a point is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Oct–Dec 202512 flights—
- Jan–Mar 202690 flights97.7%
- Apr–Jun 202691 flights97.8%
- Jul–Sep 202662 flights96.8%
Scale runs 90% to 100%. Rows with fewer than 30 flights show a dash.
By weekday, OO 3781 ranged from 94.4% on Wednesday to 100.0% on Thursday. With about 36 flights behind each day, a spread of 6 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late OO 3781 runs when it is late
OO 3781 often beats the schedule: 140 of 251 completed flights, 56%, arrived 15 minutes or more early. Most of the lateness is short. 3 of the 6 late arrivals were under half an hour behind, and 1 reached an hour or more.
- 15+ min early140 flights55.8%
- Within 15 min105 flights41.8%
- 15–29 min late3 flights1.2%
- 30–59 min late2 flights0.8%
- 1–2 hours late0 flights0.0%
- 2+ hours late1 flights0.4%
Scale runs 0% to 100%.
Share of 251 completed flights by arrival against schedule.
Only 5 of 251 completed flights left 15 minutes late or more, too few to say how often the time is made up.
The worst days
Worst days for OO 3781
The latest arrival of the period was on 15 March 2026, 3 hours 8 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 |
|---|---|---|
| 15 March 2026 | 3 hours 8 minutes | Carrier |
| 6 April 2026 | 32 minutes | Carrier |
| 20 January 2026 | 30 minutes | National Airspace System |
| 6 July 2026 | 29 minutes | Carrier |
| 1 July 2026 | 20 minutes | Carrier |
Delay causes
Why OO 3781 runs late
Carrier accounts for 90% of the 314 delay minutes carriers reported here, and the remaining four split what is left.
- 90%Carrier
- 9%National Airspace System
- 1%Extreme weather
The largest share of delay minutes, 90%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 284 of the 314 delay minutes reported here. The split is drawn from 314 delay minutes reported on OO 3781.
Cancellations are rare at 0.78%, 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
Badly late arrivals are rare here: only 0.4% land an hour or more behind schedule, against 8.3% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.
The same number turns up on four other city pairs in the data, including MSP to GRB (1), DTW to STL (1) and GRB to MSP (1), but none flew often enough under OO 3781 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to MFR to SEA only.
One caution: this is a thin sample. 255 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 3781
For a booking, OO 3781 has one of the better records a US domestic flight can show: 97.6% on time and 0.78% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- MFR to SEA, every carrier and departure
- SEA to MFR, the return direction
- SkyWest Airlines 3770 on the same route92.2%
- Seattle-Tacoma International (SEA) 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 to read this site: grades, sample sizes, and honest caveats
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.