Ontario to Santa Rosa (ONT-STS): nonstop upgrade & award space

Alaska Airlines flies the ONT to STS nonstop about 7 times a week. Alaska Airlines sets the rhythm here, a few flights a day with a small premium cabin on each, so a date with open space is worth acting on the day you see it. 2LNR tracks confirmed upgrade and award space on Alaska Airlines, on every ONT to STS departure, so you know which flights have space before you book.

Schedule last confirmed . Departure times come from 2LNR's schedule data; confirm with the airline before you book.

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7
Nonstop flights a week
422 mi
Nonstop distance
Free
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Ontario to Santa Rosa flight schedule

Scheduled nonstop departures for ONT to STS, last checked against our schedule feed on September 6, 2026. Airlines retime and cancel flights, so confirm with the airline before you book.

Schedule data dated .

Scheduled nonstop departures from Ontario (ONT) to Santa Rosa (STS)
Date Flight Airline Departs ONT Arrives STS Duration Aircraft
AS 3031Alaska Airlines, Inc.16:2718:071h 40mE75
AS 3031Alaska Airlines, Inc.16:2718:071h 40mE75
AS 3031Alaska Airlines, Inc.16:2718:071h 40mE75
AS 3031Alaska Airlines, Inc.16:2718:071h 40mE75
AS 3031Alaska Airlines, Inc.16:2718:071h 40mE75
AS 3031Alaska Airlines, Inc.16:2718:071h 40mE75
AS 3031Alaska Airlines, Inc.16:2718:071h 40mE75

Showing all 7 scheduled ONT to STS departures across the next 7 days with service. Later dates are on the interactive map.

Departure and arrival times are local at their own airport, so an arrival can fall on a different local date than the departure; the duration column is the true elapsed flying time. A dash means the airline has not filed that value in the schedule data we hold. Aircraft are IATA equipment codes as filed, and can change up to departure.

See every ONT to STS date on the interactive map

Confirmed upgrade & award space on ONT to STS departures

2LNR tracks confirmed upgrade and award space on Alaska Airlines, segment by segment and date by date. Open the calendar for Ontario to Santa Rosa to see which departures have space, the next 14 days free on every product and the full horizon on Pro.

See real availability

Confirmed upgrade and award seats on each ONT to STS departure, checked against live inventory so you know what is open before you book.

Set an alert

Premium inventory turns over fast. Watch this route and 2LNR notifies you when space appears on a date you are tracking.

Plan on the map

See ONT to STS on the interactive route map, with schedules, connections, and route statistics.

Airlines flying Ontario to Santa Rosa nonstop

Carriers operating ONT to STS nonstop in the current schedule. 2LNR tracks confirmed upgrade and award space on each of them.

See ONT to STS on the interactive map →

Frequently asked questions about ONT to STS

How far is Santa Rosa from Ontario?
ONT to STS covers about 422 miles nonstop. Flight times vary by aircraft and season; the schedule table on this page lists each scheduled departure with its own times.
Which airlines fly nonstop from ONT to STS?
Alaska Airlines is currently the only airline flying ONT to STS nonstop. 2LNR tracks confirmed upgrade and award space on Alaska Airlines.
How many flights a week are there from ONT to STS?
About 7 nonstop flights a week run between Ontario and Santa Rosa in the current schedule, operated by Alaska Airlines. Frequency shifts by season, and the schedule table on this page shows what is scheduled next.
What time do flights from ONT to STS depart?
In the next 7 days with service, every scheduled ONT to STS nonstop leaves at 16:27 local time at Ontario. The schedule table on this page lists each departure by date.
How do I check upgrade or award availability on ONT to STS?
Open the ONT to STS route on the interactive map or the matrix to see confirmed upgrade and award space by date on Alaska Airlines, the next 14 days free and the full horizon on Pro. On Pro you can also set an alert on the route and 2LNR notifies you when space opens.

Never miss ONT to STS upgrade or award space

See what is open by date on this route, the next 14 days free on every product and the full horizon on Pro.

Get started free