Flight number record

OO 3418

SkyWest Airlines · Boise to San Jose

Route: BOI → SJC
Departs: 10:00
Flights: 269
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s OO 3418, 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 3418 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 13 points better than the national rate of 77.6%. When something does go wrong the average delay runs about an hour. That rests on 269 flights, with a median arrival 10 minutes early.

Set against the rest of the country, OO 3418's record is 13 points better than the US average of 77.6%. That gap is worth roughly 131 fewer late arrivals for every thousand flights.

On time

90.7%

Arrivals under 15 minutes late, of 268 completed flights

Avg delay

68 min

Across delayed arrivals only, not all flights

Cancelled

0.37%

National rate is 1.81%

1 hour+ late

3.4%

National rate is 8.1%

These figures cover 269 flights between July 2025 and June 2026. The median arrival is 10 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 3418 flies

OO 3418 flies BOI to SJC without a single fixed slot. Its most common scheduled departure was 10:00, used on 50 of 269 flights, with 10:08 (45 flights) and 09:59 (42 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 10:0050 flights18.6%
Departs 10:0845 flights16.7%
Departs 09:5942 flights15.6%

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 10:00 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 84.1%, and OO 3418 runs 7 points better at 90.7%. 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 3418 next to BOI to SJC

Every carrier on BOI to SJC combined arrived on time 84.0% of the time across 658 flights, so OO 3418 is 7 points ahead of it. Across its whole network SkyWest Airlines managed 79.0%, which this flight beats by 12 points.

OO 3418 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 3418thin sample	269	90.7%	68 min	0.37%	A+
All SkyWest Airlines on BOI–SJCthin sample	328	92.0%	69 min	0.30%	A+
All carriers on BOI–SJC	658	84.0%	54 min	0.15%	B+
SkyWest Airlines, whole network	852,935	79.0%	88 min	1.77%	B

Across the year

OO 3418 quarter by quarter

Quarter by quarter OO 3418 held fairly steady: 88.0% in Jul–Sep 2025, 91.2% in Oct–Dec 2025 and 91.1% in Jan–Mar 2026. A spread of 3 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202592 flights88.0%
Oct–Dec 202592 flights91.2%
Jan–Mar 202656 flights91.1%
Apr–Jun 202629 flights—

Scale runs 80% to 95%. Rows with fewer than 30 flights show a dash.

By weekday, OO 3418 did best on Thursday at 97.4% on time and worst on Friday at 83.8%. Each day rests on about 38 flights, so a gap of 14 points is worth noticing but could still narrow in another year.

Delay causes

Why OO 3418 runs late

One category carries most of the weight here. Carrier accounts for 70% of the 1,693 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
70%
Late-arriving aircraft
28%
National Airspace System
3%

The largest share of delay minutes, 70%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 1,184 of the 1,693 delay minutes reported here. The split is drawn from 1,693 delay minutes reported on OO 3418.

Cancellations are rare at 0.37%, 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 3.4% 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 523 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.

Every one of the 269 flights under OO 3418 in the data flew BOI to SJC. The number was not reused on any other city pair, which makes this a clean record of one route.

One caution: this is a thin sample. 269 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 3418

For a booking, OO 3418 has one of the better records a US domestic flight can show: 90.7% on time and 0.37% 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