1,080 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

No clear winner: airlines and hours on this route all land within a few points of 9 in 10 on time.

Best time to leave 1–2 pm 94% arrive on time from ONT

Best single flight AS 2456 ONT 17:32 → PDX 19:49 · 93% on time

Time of day × airport

Share of this route’s flights leaving within 15 minutes, by airport and scheduled departure hour, over Aug 2025 – Jul 2026. Blank: no flights then (or fewer than 40 in the year).

ONT

% of this route’s flights leaving within 15 min (small number: flights in the Jun 6 – Jul 31, 2026 schedule): 85+75–8465–7455–64under 55

Pick an hour to see this route’s flights leaving then.

Airlines on this route

Arriving within 15 minutes. Regional flights count under the airline that sells them. Pick an airline to see its flights.


Alaska (incl. SkyWest, Horizon)	1,020	92%	1.4%	83 min
Frontier	60	–	0.0%	34 min

Dimmed: fewer than 150 flights in the year, too few to rank.

Flights, best and worst

Flights in the Jun 6 – Jul 31, 2026 schedule that ran 150+ times in the year. Times are local. Pick a flight for its history.


AS 2456flown by Horizon	ONT 17:32	PDX 19:49	93%

All 7 flights in the current schedule

Every flight that flew in the Jun 6 – Jul 31, 2026 schedule, with its record over Aug 2025 – Jul 2026. Times are local. Click a column to sort.


AS 2397flown by Horizon	ONT 07:00	PDX 09:21	2h 21m	19	74%	0.0%	308 min
AS 2304flown by Horizon	ONT 07:00	PDX 09:24	2h 24m	28	81%	3.6%	27 min
AS 345	ONT 07:00	PDX 09:15	2h 15m	31	100%	0.0%	–
AS 1699	ONT 10:54	PDX 13:09	2h 15m	52	96%	1.9%	50 min
AS 1333	ONT 11:15	PDX 13:39	2h 24m	28	86%	0.0%	54 min
AS 2456flown by Horizon	ONT 17:32	PDX 19:49	2h 17m	300	93%	1.3%	70 min
AS 2199flown by Horizon	ONT 17:57	PDX 20:21	2h 24m	69	91%	1.4%	47 min

Nonstops by airline and airport

Arriving within 15 minutes, Aug 2025 – Jul 2026. Pick a row to see that airline’s flights on that airport pair.


Alaska	ONT	PDX	2h 24m	92%	1.4%	1,020	Flying now
Frontier	ONT	PDX	2h 26m	75%	0.0%	60	Not flying now

Flying on a particular day? Pick a date above and the same ranking uses our forecast odds for each flight that day: Tomorrow.

About this data: US DOT on-time records, Aug 2025 – Jul 2026, all US airlines; regional flights count under the airline that sells them. Schedules (which flights and connections exist, and their times) are as of Jun 6 – Jul 31, 2026; seasonal flights outside that window aren’t ranked. Rebuilt monthly. JSON