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DelayAtlas

Carrier route record

OOFAT→SEA

SkyWest Airlines · Fresno to Seattle

Flights
465
Period
September 2025 to August 2026
Share of route
53%
Carriers
2
B+GRADE

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

SkyWest on FAT to SEA lands a B+, 5 points better than the national rate of 77.3%. About one flight in six arrives 15 minutes late or worse, and those flights are late by about an hour on average. That rests on 465 flights, with a median arrival 7 minutes early.

Set against the rest of the country, SkyWest's FAT to SEA record is 5 points better than the US average of 77.3%. That gap is worth roughly 54 fewer late arrivals for every thousand flights.

Key figures

On time

82.7%

Arrivals under 15 minutes late, of 462 completed flights

Avg delay

56 min

Across delayed arrivals only, not all flights

Cancelled

0.43%

National rate is 1.89%

Whole route

82.7%

Every carrier on FAT to SEA, 882 flights

These figures cover 465 flights between September 2025 and August 2026. The median arrival is 7 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.

Fare search by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.

Carrier by carrier

SkyWest against every carrier on FAT to SEA

SkyWest flew 465 of the 882 flights on FAT to SEA, most of the route. Its 82.7% on time is about level with the route as a whole at 82.7%. Ranked by on-time rate it is last of two carriers on the route, where the range runs from Alaska at 82.8% to SkyWest at 82.7%.

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 FAT to SEA
AirlineFlightsOn timeAvg delayCancelledGrade
Alaska Airlines41782.8%57 min0.96%B+
SkyWest Airlines (this page)46582.7%56 min0.43%B+

Flight by flight

SkyWest flight numbers on FAT to SEA

Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.

Departure window

When SkyWest runs best on this route

Departure time matters more here than the choice of carrier. The gap between the best and worst window is 22 points, against half a point between the best and worst carrier.

  • 5am–8am122 flights96.7%
  • 8am–11am288 flights74.7%
  • 11am–2pm22 flights—
  • 2pm–5pm—
  • 5pm–8pm33 flights87.9%
  • 8pm–5am—

Scale runs 65% to 100%. Rows with fewer than 30 flights show a dash.

Book the early departure. Flights leaving between 5am–8am arrive on time 96.7% of the time, against 74.7% for the morning window. That is 22 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 8am–11am window is the busiest, with 288 flights scheduled in it.

Across the year

SkyWest on FAT to SEA through the year

On-time rate by calendar month—J—F87M67A81M—J97J94A80S83O77N67D
Darker means more delays. Figures are on-time percentages.July best, April worst

December is the weak month at 66.7% on time, against 96.8% in July. Winter delays cluster: a single storm system can account for most of a month's shortfall, so an average December hides both very good weeks and genuinely unflyable days. September was the busiest month here, with 90 flights.

Across the week, Saturday is the strongest day at 93.7% on time and Thursday the weakest at 73.5%, a spread of 20 points.

On-time rate by day of the week82.6Mon81.5Tue85.9Wed73.5Thu76.5Fri93.7Sat86.2Sun
Monday: 82.6 percent on time. Tuesday: 81.5 percent on time. Wednesday: 85.9 percent on time. Thursday: 73.5 percent on time. Friday: 76.5 percent on time. Saturday: 93.7 percent on time. Sunday: 86.2 percent on time

Arrival by arrival

How late SkyWest on FAT to SEA runs when it is late

SkyWest on FAT to SEA often beats the schedule: 145 of 462 completed flights, 31%, arrived 15 minutes or more early. Most of the lateness is short. 48 of the 80 late arrivals were under half an hour behind, and 17 reached an hour or more.

  • 15+ min early145 flights31.4%
  • Within 15 min237 flights51.3%
  • 15–29 min late48 flights10.4%
  • 30–59 min late15 flights3.2%
  • 1–2 hours late9 flights1.9%
  • 2+ hours late8 flights1.7%

Scale runs 0% to 100%.

Share of 462 completed flights by arrival against schedule.

11 of 44 late departures made up the time and arrived on time, 25% of them. In the other direction, 47 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at SEA.

The worst days

Worst days for SkyWest on FAT to SEA

The latest arrival of the period was on 4 March 2026, 7 hours 24 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on three of the five worst days.

The latest arrivals of SkyWest on FAT to SEA in the period
DateArrived late byLargest filed cause
4 March 20267 hours 24 minutesCarrier
7 March 20267 hours 24 minutesLate-arriving aircraft
25 September 20254 hours 52 minutesCarrier
6 May 20263 hours 25 minutesCarrier
18 September 20253 hours 12 minutesNational Airspace System

Delay causes

Why SkyWest runs late on this route

Carrier accounts for 57% of the 4,464 delay minutes carriers reported here, and the remaining four split what is left.

  • Carrier
    57%
  • Late-arriving aircraft
    26%
  • National Airspace System
    15%
  • Extreme weather
    3%

The largest share of delay minutes, 57%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 2,523 of the 4,464 delay minutes reported here. The split is drawn from 4,464 reported delay minutes.

Cancellations are rare at 0.43%, 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 stage length

What a delay here costs

Badly late arrivals are rare here: only 3.7% 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 748 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.

The return leg runs 83.5% on time across 465 flights, within about a point of this direction. The two legs are scored separately because they usually differ; on this city pair they happen not to.

One caution: this is a thin sample. 465 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 FAT to SEA

Put together: treat all of this as provisional. 465 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 82.7% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 462 completed flights over 12 months sit behind that.

Related

Where to go next

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.