Flight number record

AS 270

Alaska Airlines · Ontario to Honolulu

Route: ONT → HNL
Departs: 09:00
Flights: 363
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s AS 270, check with Alaska Airlines.

AS 270 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 10 points better than the national rate of 77.6%. When something does go wrong the average delay runs roughly 55 minutes. That rests on 363 flights, with a median arrival 9 minutes early.

Set against the rest of the country, AS 270's record is 10 points better than the US average of 77.6%. That gap is worth roughly 102 fewer late arrivals for every thousand flights.

On time

87.8%

Arrivals under 15 minutes late, of 362 completed flights

Avg delay

53 min

Across delayed arrivals only, not all flights

Cancelled

0.28%

National rate is 1.81%

1 hour+ late

3.0%

National rate is 8.1%

These figures cover 363 flights between July 2025 and June 2026. The median arrival is 9 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 AS 270 flies

AS 270 flies ONT to HNL without a single fixed slot. Its most common scheduled departure was 09:00, used on 50 of 363 flights. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 09:0050 flights13.8%

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 09:00 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 84.1%, and AS 270 runs 4 points better at 87.8%. 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

AS 270 next to ONT to HNL

Every carrier on ONT to HNL combined arrived on time 88.7% of the time across 392 flights, so AS 270 is about level with it. Across its whole network Alaska Airlines managed 79.1%, which this flight beats by 9 points.

AS 270 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
AS 270thin sample	363	87.8%	53 min	0.28%	A+
All Alaska Airlines on ONT–HNL	365	87.9%	53 min	0.27%	A+
All carriers on ONT–HNL	392	88.7%	53 min	0.26%	A+
Alaska Airlines, whole network	293,372	79.1%	52 min	1.28%	B

Across the year

AS 270 quarter by quarter

AS 270 did not run the same all year. Its best quarter was Jul–Sep 2025 at 93.5% on time and its weakest Jan–Mar 2026 at 80.0%, a swing of 14 points on roughly 91 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.

Jul–Sep 202592 flights93.5%
Oct–Dec 202590 flights89.9%
Jan–Mar 202690 flights80.0%
Apr–Jun 202691 flights87.9%

Scale runs 70% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, AS 270 ranged from 86.3% on Saturday to 90.4% on Sunday. With about 52 flights behind each day, a spread of 4 points is inside normal variation, so the day you fly is not worth changing for this flight.

Delay causes

Why AS 270 runs late

One category carries most of the weight here. National Airspace System accounts for 56% of the 2,327 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.

National Airspace System
56%
Carrier
42%
Extreme weather
2%

56% of delay minutes are charged to the National Airspace System: air traffic volume, runway configuration, ground stops. No carrier can price its way out of that, which is why airport choice moves the number here more than carrier choice does. That is 1,307 minutes out of 2,327, against a national NAS share of 21%. The split is drawn from 2,327 delay minutes reported on AS 270.

Cancellations are rare at 0.28%, 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 3.0% 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.

At 2,603 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.

Every one of the 363 flights under AS 270 in the data flew ONT to HNL. 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. 363 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 AS 270

For a booking, AS 270 has one of the better records a US domestic flight can show: 87.8% on time and 0.28% cancelled. That is a base rate, not a promise about any single day.

Where to go next

A flight number here means Alaska 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