Flight number record

OO 3735

SkyWest Airlines · Seattle to Redmond

Route: SEA → RDM
Departs: 09:25
Flights: 349
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s OO 3735, 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 3735 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 about an hour. That rests on 349 flights, with a median arrival 13 minutes early.

Set against the rest of the country, OO 3735's record is 12 points better than the US average of 77.6%. That gap is worth roughly 124 fewer late arrivals for every thousand flights.

On time

90.0%

Arrivals under 15 minutes late, of 341 completed flights

Avg delay

56 min

Across delayed arrivals only, not all flights

Cancelled

2.29%

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 13 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 3735 flies

OO 3735 flies SEA to RDM without a single fixed slot. Its most common scheduled departure was 09:25, used on 155 of 349 flights, with 09:35 (59 flights) and 09:40 (44 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 09:25155 flights44.4%
Departs 09:3559 flights16.9%
Departs 09:4044 flights12.6%

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 09:25 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 84.1%, and OO 3735 runs 6 points better at 90.0%. 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 3735 next to SEA to RDM

Every carrier on SEA to RDM combined arrived on time 83.9% of the time across 1,938 flights, so OO 3735 is 6 points ahead of it. SkyWest flew 1,415 flights on the same city pair under all its flight numbers, including this one, and those ran 86.6% on time. Across its whole network SkyWest Airlines managed 79.0%, which this flight beats by 11 points.

OO 3735 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 3735thin sample	349	90.0%	56 min	2.29%	A
All SkyWest Airlines on SEA–RDM	1,415	86.6%	52 min	1.70%	A
All carriers on SEA–RDM	1,938	83.9%	49 min	1.65%	B
SkyWest Airlines, whole network	852,935	79.0%	88 min	1.77%	B

Across the year

OO 3735 quarter by quarter

OO 3735 did not run the same all year. Its best quarter was Jul–Sep 2025 at 97.8% on time and its weakest Jan–Mar 2026 at 82.1%, a swing of 16 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 202592 flights97.8%
Oct–Dec 202580 flights86.5%
Jan–Mar 202686 flights82.1%
Apr–Jun 202691 flights92.3%

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

By weekday, OO 3735 ranged from 87.5% on Thursday to 93.9% on Wednesday. With about 50 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.

Delay causes

Why OO 3735 runs late

One category carries most of the weight here. Carrier accounts for 59% of the 1,898 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
59%
Extreme weather
29%
National Airspace System
12%

Extreme weather accounts for 29% 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 4.7 times the usual weather exposure. The split is drawn from 1,898 delay minutes reported on OO 3735.

Cancellations sit at 2.29% against a national 1.81%, which is ordinary. Diversions add another 0.00%.

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 3735 is not only a SEA to RDM flight. It also flew RDM to SEA (318 flights, 90.3% 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 3735
Also flown as	Flights	On time	Avg delay	Cancelled	Grade
RDM to SEAthin sample	318	90.3%	68 min	2.52%	A

What to do with this

Booking OO 3735

For a booking, read OO 3735 as 90.0% on time with 2.29% cancelled over 349 flights. Those are rates from the past twelve months, not a forecast for any particular 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