Carrier route record

WNOAK→OGG

Southwest Airlines · Oakland to Kahului

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 OGG sits in the middle of the pack with a C+. Close to three flights in four arrive on time by the DOT's definition, 3 points worse than the national rate of 77.3%. The late ones land roughly 55 minutes behind schedule. That rests on 365 flights, with a median arrival 4 minutes early.

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

On time

73.9%

Arrivals under 15 minutes late, of 364 completed flights

Avg delay

54 min

Across delayed arrivals only, not all flights

Cancelled

0.27%

National rate is 1.89%

Whole route

84.7%

Every carrier on OAK to OGG, 731 flights

These figures cover 365 flights between September 2025 and August 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.

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Carrier by carrier

Southwest against every carrier on OAK to OGG

Southwest flew 365 of the 731 flights on OAK to OGG, about 50% of it. Its 73.9% on time is 11 points worse than the route as a whole, which runs 84.7%. Ranked by on-time rate it is last of three carriers on the route, where the range runs from Hawaiian at 96.6% to Southwest at 73.9%. 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 OGG
Airline	Flights	On time	Avg delay	Cancelled	Grade
Hawaiian Airlinesthin sample	123	96.6%	31 min	4.07%	A−
Alaska Airlinesthin sample	243	95.4%	60 min	1.65%	A
Southwest Airlines (this page)	365	73.9%	54 min	0.27%	C+

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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 19 points, against half a point between the best and worst carrier.

5am–8am—
8am–11am1 flights—
11am–2pm147 flights85.0%
2pm–5pm217 flights66.2%
5pm–8pm—
8pm–5am—

Scale runs 60% to 90%. Rows with fewer than 30 flights show a dash.

The best window here is not the first bank but the 11am–2pm slot at 85.0% on time, ahead of 2pm–5pm at 66.2%. Where the curve peaks mid-day rather than at dawn, the constraint is usually congestion at one end rather than the aircraft's own rotation. The 2pm–5pm window is the busiest, with 217 flights scheduled in it.

Across the year

Southwest on OAK to OGG through the year

Darker means more delays. Figures are on-time percentages.November best, July worst

July is the worst month at 54.8% on time, 45 points below November, the best at 100.0%. Summer afternoon convection and peak-season schedules land on the same weeks every year, so this is a pattern you can book around rather than a run of bad luck. January was the busiest month here, with 31 flights.

Across the week, Monday is the strongest day at 79.2% on time and Thursday the weakest at 67.3%, a spread of 12 points.

Arrival by arrival

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

Southwest on OAK to OGG often beats the schedule: 111 of 364 completed flights, 30%, arrived 15 minutes or more early. The 95 late arrivals split 38 under half an hour, 36 between 30 and 60 minutes, and 21 an hour or more.

15+ min early111 flights30.5%
Within 15 min158 flights43.4%
15–29 min late38 flights10.4%
30–59 min late36 flights9.9%
1–2 hours late12 flights3.3%
2+ hours late9 flights2.5%

Scale runs 0% to 100%.

Share of 364 completed flights by arrival against schedule.

A late pushback is often recovered here: of 110 departures that left 15 minutes late or more, 35 still arrived on time. In the other direction, 20 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 OGG.

The worst days

Worst days for Southwest on OAK to OGG

The latest arrival of the period was on 22 May 2026, 4 hours 22 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on four of the five worst days.

The latest arrivals of Southwest on OAK to OGG in the period
Date	Arrived late by	Largest filed cause
22 May 2026	4 hours 22 minutes	Carrier
12 July 2026	4 hours 10 minutes	Carrier
1 April 2026	3 hours 55 minutes	National Airspace System
11 January 2026	3 hours 13 minutes	Carrier
12 October 2025	3 hours 4 minutes	Carrier

Delay causes

Why Southwest runs late on this route

Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 4,926 reported delay minutes.

Late-arriving aircraft
41%
Carrier
41%
National Airspace System
17%
Security
1%

41% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 4,926 reported delay minutes here, that single category outweighs weather by 41 to one. The split is drawn from 4,926 reported delay minutes.

The largest share of delay minutes, 41%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 2,010 of the 4,926 delay minutes reported here.

Cancellations are rare at 0.27%, 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

5.8% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last roughly 55 minutes, which a normal layover absorbs.

At 2,348 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 95.9% on time across 365 flights, 22 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 22 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 OGG

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 73.9% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 364 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