Carrier route record

WNOAK→HNL

Southwest Airlines · Oakland to Honolulu

Flights: 365
Period: September 2025 to August 2026
Share of route: 50%
Carriers: 3

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

Southwest on OAK to HNL lands a B+, level with the national rate of 77.3%. Roughly one flight in four arrives 15 minutes late or worse, and those flights are late by roughly 45 minutes on average. That rests on 365 flights, with a median arrival 5 minutes early.

The US average over the same twelve months is 77.3%, so there is little to separate Southwest on OAK to HNL from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.

On time

77.0%

Arrivals under 15 minutes late, of 365 completed flights

Avg delay

44 min

Across delayed arrivals only, not all flights

Cancelled

0.00%

National rate is 1.89%

Whole route

79.6%

Every carrier on OAK to HNL, 729 flights

These figures cover 365 flights between September 2025 and August 2026. The median arrival is 5 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.

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Carrier by carrier

Southwest against every carrier on OAK to HNL

Southwest flew 365 of the 729 flights on OAK to HNL, most of the route. Its 77.0% on time is 3 points worse 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 85.4% to Hawaiian at 75.8%. Two 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 HNL
Airline	Flights	On time	Avg delay	Cancelled	Grade
Alaska Airlinesthin sample	242	85.4%	48 min	1.24%	A
Southwest Airlines (this page)	365	77.0%	44 min	0.00%	B+
Hawaiian Airlinesthin sample	122	75.8%	78 min	1.64%	B

Flight by flight

Southwest flight numbers on OAK to HNL

WN 80812:3576.3% · 304 flights

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Departure window

When Southwest runs best on this route

Departure time matters more here than the choice of carrier. The gap between the best and worst window is 12 points, against half a point between the best and worst carrier.

5am–8am—
8am–11am1 flights—
11am–2pm302 flights74.8%
2pm–5pm62 flights87.1%
5pm–8pm—
8pm–5am—

Scale runs 65% to 95%. Rows with fewer than 30 flights show a dash.

The weak window here is the middle of the day, not the evening: 11am–2pm runs 74.8% on time against 87.1% for 2pm–5pm. That shape usually means a departure bank rather than an accumulating delay, so the recovery later in the afternoon is real rather than noise. The 11am–2pm window is the busiest, with 302 flights scheduled in it.

Across the year

Southwest on OAK to HNL through the year

Darker means more delays. Figures are on-time percentages.August best, April worst

Delays peak in April, when the on-time rate falls to 53.3%. August is the strongest month at 93.5%. Moving a flexible trip across that boundary buys 40 points. January was the busiest month here, with 31 flights.

Across the week, Monday is the strongest day at 81.1% on time and Sunday the weakest at 71.2%, a spread of 10 points.

Arrival by arrival

How late Southwest on OAK to HNL runs when it is late

Southwest on OAK to HNL often beats the schedule: 109 of 365 completed flights, 30%, arrived 15 minutes or more early. The 84 late arrivals split 41 under half an hour, 31 between 30 and 60 minutes, and 12 an hour or more.

15+ min early109 flights29.9%
Within 15 min172 flights47.1%
15–29 min late41 flights11.2%
30–59 min late31 flights8.5%
1–2 hours late6 flights1.6%
2+ hours late6 flights1.6%

Scale runs 0% to 100%.

Share of 365 completed flights by arrival against schedule.

A late pushback is often recovered here: of 90 departures that left 15 minutes late or more, 34 still arrived on time. In the other direction, 28 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 HNL.

The worst days

Worst days for Southwest on OAK to HNL

The latest arrival of the period was on 15 March 2026, 5 hours 31 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 Southwest on OAK to HNL in the period
Date	Arrived late by	Largest filed cause
15 March 2026	5 hours 31 minutes	Carrier
4 January 2026	4 hours 16 minutes	Late-arriving aircraft
3 October 2025	2 hours 50 minutes	Carrier
12 July 2026	2 hours 8 minutes	Carrier
1 June 2026	2 hours 7 minutes	None reported

Delay causes

Why Southwest runs late on this route

Carrier accounts for 46% of the 3,537 delay minutes carriers reported here, and the remaining four split what is left.

Carrier
46%
Late-arriving aircraft
35%
National Airspace System
19%

35% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 3,537 reported delay minutes here, that single category outweighs weather by 35 to one. The split is drawn from 3,537 reported delay minutes.

The largest share of delay minutes, 46%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 1,637 of the 3,537 delay minutes reported here.

Cancellations are rare at 0.00%, below the national 1.89% 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 3.3% 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.

At 2,409 miles this is transcontinental flying, and long routes get a quiet structural advantage. Scheduled block time on a flight this length carries more padding in absolute minutes, so a twenty-minute late departure often still becomes an on-time arrival. Read the on-time rate here as slightly flattering next to a short-haul route with the same operational quality.

The return leg is a different operation and performs like one: it runs 88.2% on time across 365 flights, 11 points above this direction. Departure banks, aircraft rotations and the congestion at each end all differ, so scoring the two directions together would average away a real 11 points of difference.

One caution: this is a thin sample. 365 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 Southwest on OAK to HNL

Put together: treat all of this as provisional. 365 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 77.0% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 365 completed flights over 12 months sit behind that.

Where to go next

Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated 22 October 2026; recomputed monthly. How this data is collected.

Key figures