Carrier route record

OOOAK→PDX

SkyWest Airlines · Oakland to Portland

Flights: 100
Period: July 2025 to June 2026
Share of route: 8%
Carriers: 3

Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with SkyWest Airlines.

SkyWest on OAK to PDX earns a B+. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 6 points better than the national rate of 77.6%. When something does go wrong the average delay runs about 45 minutes. That rests on 100 flights, with a median arrival 4 minutes early.

Set against the rest of the country, SkyWest's OAK to PDX record is 6 points better than the US average of 77.6%. That gap is worth roughly 64 fewer late arrivals for every thousand flights.

On time

84.0%

Arrivals under 15 minutes late, of 100 completed flights

Avg delay

45 min

Across delayed arrivals only, not all flights

Cancelled

0.00%

National rate is 1.81%

Whole route

79.6%

Every carrier on OAK to PDX, 1,297 flights

These figures cover 100 flights between July 2025 and June 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.

Carrier by carrier

SkyWest against every carrier on OAK to PDX

SkyWest flew 100 of the 1,297 flights on OAK to PDX, about 8% of it. Its 84.0% on time is 4 points better than the route as a whole, which runs 79.6%. Ranked by on-time rate it is number two of three carriers on the route, where the range runs from Alaska at 100.0% to Southwest at 78.9%. One of those carriers flew fewer than 365 flights here, so treat their positions as rough.

Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.

On-time performance by carrier on OAK to PDX
Airline	Flights	On time	Avg delay	Cancelled	Grade
Alaska Airlinesthin sample	16	100.0%	—	0.00%	A+
SkyWest Airlines (this page)thin sample	100	84.0%	45 min	0.00%	B+
Southwest Airlines	1,181	78.9%	54 min	0.42%	B+

Departure window

When SkyWest runs best on this route

Departure time is the single lever a traveller controls, and it moves the odds more than most people expect. Each bar below is the on-time rate for flights scheduled to leave inside that window, across 100 flights.

There are not enough flights in each departure window to split SkyWest's OAK to PDX record by time of day without the percentages moving on noise. The headline rate of 84.0% is the reliable figure here.

Across the year

SkyWest on OAK to PDX through the year

Oct–Dec 202526 flights—
Jan–Mar 202625 flights—
Apr–Jun 202649 flights81.6%

Scale runs 75% to 85%. Rows with fewer than 30 flights show a dash.

Monthly volumes are too low here to break the year into twelve reliable readings. What the twelve-month total says is 84.0% on time across 100 flights.

Split by quarter, SkyWest on OAK to PDX logged 26 flights in Oct–Dec 2025, 25 flights in Jan–Mar 2026 and 49 flights in Apr–Jun 2026. Fewer than three of those quarters carried the 30 completed flights this site needs before printing a rate, so the 84.0% annual figure is the one to use.

Delay causes

Why SkyWest runs late on this route

One category carries most of the weight here. Late-arriving aircraft accounts for 73% of the 720 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.

Late-arriving aircraft
73%
Carrier
15%
National Airspace System
9%
Extreme weather
3%

73% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 720 reported delay minutes here, that single category outweighs weather by 29 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 720 reported delay minutes.

Cancellations are rare at 0.00%, below the national 1.81% and low enough to earn the plus on the grade. Almost no flights are called off; the risk here is arriving late, not not arriving.

Connections and stage length

What a delay here costs

Badly late arrivals are rare here: only 3.0% 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.

The 543 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. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.

One caution: this is a thin sample. 100 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 SkyWest on OAK to PDX

Put together: treat all of this as provisional. 100 flights over twelve months is enough to clear this site's floor and not enough to be confident to better than a couple of points. The 84.0% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 100 completed flights over 12 months sit behind that.

Where to go next

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