Flight number record

OO 4124

SkyWest Airlines · Seattle to Eugene

Route: SEA → EUG
Departs: 15:25
Flights: 349
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s OO 4124, 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 4124 earns an A+. Close to nine flights in ten arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 12 points better than the national rate of 77.6%. When something does go wrong the average delay runs roughly 45 minutes. That rests on 349 flights, with a median arrival 8 minutes early.

Set against the rest of the country, OO 4124's record is 12 points better than the US average of 77.6%. That gap is worth roughly 123 fewer late arrivals for every thousand flights.

On time

89.9%

Arrivals under 15 minutes late, of 347 completed flights

Avg delay

47 min

Across delayed arrivals only, not all flights

Cancelled

0.57%

National rate is 1.81%

1 hour+ late

2.3%

National rate is 8.1%

These figures cover 349 flights between July 2025 and June 2026. The median arrival is 8 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 4124 flies

OO 4124 flies SEA to EUG without a single fixed slot. Its most common scheduled departure was 15:25, used on 72 of 349 flights, with 15:30 (53 flights) and 15:55 (36 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 15:2572 flights20.6%
Departs 15:3053 flights15.2%
Departs 15:5536 flights10.3%

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 15:25 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 72.4%, and OO 4124 runs 18 points better at 89.9%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

OO 4124 next to SEA to EUG

Every carrier on SEA to EUG combined arrived on time 84.4% of the time across 1,951 flights, so OO 4124 is 6 points ahead of it. SkyWest flew 1,562 flights on the same city pair under all its flight numbers, including this one, and those ran 87.1% on time. Across its whole network SkyWest Airlines managed 79.0%, which this flight beats by 11 points.

OO 4124 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 4124thin sample	349	89.9%	47 min	0.57%	A+
All SkyWest Airlines on SEA–EUG	1,562	87.1%	61 min	1.34%	A
All carriers on SEA–EUG	1,951	84.4%	55 min	1.28%	B
SkyWest Airlines, whole network	852,935	79.0%	88 min	1.77%	B

Across the year

OO 4124 quarter by quarter

OO 4124 did not run the same all year. Its best quarter was Oct–Dec 2025 at 95.6% on time and its weakest Jan–Mar 2026 at 85.3%, a swing of 10 points on roughly 87 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 flights90.1%
Oct–Dec 202590 flights95.6%
Jan–Mar 202677 flights85.3%
Apr–Jun 202691 flights87.9%

Scale runs 75% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, OO 4124 did best on Tuesday at 96.2% on time and worst on Thursday at 80.4%. Each day rests on about 50 flights, so a gap of 16 points is worth noticing but could still narrow in another year.

Delay causes

Why OO 4124 runs late

One category carries most of the weight here. Carrier accounts for 62% of the 1,626 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.

Carrier
62%
Extreme weather
25%
National Airspace System
14%

Extreme weather accounts for 25% 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 4.0 times the usual weather exposure. The split is drawn from 1,626 delay minutes reported on OO 4124.

Cancellations are rare at 0.57%, below the national 1.81% 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 2.3% land an hour or more behind schedule, against 8.1% 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.

OO 4124 is not only a SEA to EUG flight. It also flew EUG to SEA (345 flights, 91.0% on time) often enough to be scored on its own. Airlines attach one number to several legs of an aircraft's day, and each leg keeps its own record here, so check which city pair is on your booking before reading a rate.

One caution: this is a thin sample. 349 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.

Other routes flown as OO 4124
Also flown as	Flights	On time	Avg delay	Cancelled	Grade
EUG to SEAthin sample	345	91.0%	72 min	0.58%	A+

What to do with this

Booking OO 4124

For a booking, OO 4124 has one of the better records a US domestic flight can show: 89.9% on time and 0.57% cancelled. That is a base rate, not a promise about any single 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