--- title: "Seattle (SEA) to Santa Rosa (STS) flights: who flies it" description: "Alaska Airlines flies nonstop from SEA to STS, about 19 flights a week, covering 618 miles. See confirmed upgrade and award space by date on 2LNR, the next 14 days free." canonical: "https://2lnr.com/routes/sea-sts" url: "https://2lnr.com/routes/sea-sts.md" date_modified: "2026-10-18T05:10:47Z" --- # Seattle to Santa Rosa (SEA-STS): nonstop upgrade & award space Alaska Airlines flies nonstop between Seattle (SEA) and Santa Rosa (STS), roughly 19 times a week. In the timetable below it flies as AS 504 and AS 1347, scheduled at 2h to 2h 8m for the 618 miles. 2LNR checks confirmed upgrade and award space on Alaska Airlines flights on this route, so you can see which departures have space before you book. Schedule last confirmed October 18, 2026. Departure times come from 2LNR's schedule data; confirm with the airline before you book. Updated October 23, 2026. See SEA to STS on the interactive map [Get started free](https://2lnr.com/login) 19 Flights a week, 4-week average 2h to 2h 8m Scheduled flight time 618 mi Nonstop distance Free To get started ## Seattle to Santa Rosa flight schedule Scheduled nonstop departures for SEA to STS starting October 23, 2026, last checked against our schedule feed on October 18, 2026. Airlines retime and cancel flights, so confirm with the airline before you book. Scheduled nonstop departures from Seattle (SEA) to Santa Rosa (STS) | Date | Flight | Airline | Departs SEA | Arrives STS | Duration | Aircraft | | :--- | :--- | :--- | :--- | :--- | :--- | :--- | | Fri, Oct 23 | AS 1347 | Alaska Airlines, Inc. | 10:58 | 13:06 | 2h 8m | [Boeing 737-800](https://2lnr.com/seatmaps/as/737-800.md) | | Fri, Oct 23 | AS 504 | Alaska Airlines, Inc. | 19:56 | 21:56 | 2h | Boeing 737-800 | | Sat, Oct 24 | AS 1347 | Alaska Airlines, Inc. | 10:58 | 13:06 | 2h 8m | Boeing 737-800 | | Sat, Oct 24 | AS 504 | Alaska Airlines, Inc. | 19:56 | 21:56 | 2h | Boeing 737-800 | | Sun, Oct 25 | AS 1347 | Alaska Airlines, Inc. | 10:58 | 13:06 | 2h 8m | Boeing 737-800 | | Sun, Oct 25 | AS 504 | Alaska Airlines, Inc. | 19:56 | 21:56 | 2h | Boeing 737-800 | | Mon, Oct 26 | AS 1347 | Alaska Airlines, Inc. | 10:58 | 13:06 | 2h 8m | Boeing 737-800 | | Mon, Oct 26 | AS 504 | Alaska Airlines, Inc. | 19:56 | 21:56 | 2h | Boeing 737-800 | | Tue, Oct 27 | AS 1347 | Alaska Airlines, Inc. | 10:58 | 13:06 | 2h 8m | Boeing 737-800 | | Tue, Oct 27 | AS 504 | Alaska Airlines, Inc. | 19:56 | 21:56 | 2h | Boeing 737-800 | | Wed, Oct 28 | AS 1347 | Alaska Airlines, Inc. | 10:58 | 13:06 | 2h 8m | Boeing 737-800 | | Wed, Oct 28 | AS 504 | Alaska Airlines, Inc. | 19:56 | 21:56 | 2h | [Boeing 737 MAX 8](https://2lnr.com/seatmaps/as/737-max-8.md) | | Thu, Oct 29 | AS 1347 | Alaska Airlines, Inc. | 10:58 | 13:06 | 2h 8m | Boeing 737-800 | | Thu, Oct 29 | AS 504 | Alaska Airlines, Inc. | 19:56 | 21:56 | 2h | Boeing 737-800 | Showing all 14 scheduled SEA to STS departures across 7 days with service, starting October 23, 2026. 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 hasn't filed that value in the schedule data we hold. Aircraft are the equipment the airline filed, named where the code pins down one type and shown as the family or the bare code where it doesn't. Swaps can happen up to departure. See every SEA to STS date on the interactive map ## Aircraft on the Seattle to Santa Rosa nonstop Alaska Airlines flies the departures in the schedule table on this page with the [Boeing 737-800](https://2lnr.com/seatmaps/as/737-800.md) and the [Boeing 737 MAX 8](https://2lnr.com/seatmaps/as/737-max-8.md). Each linked aircraft page shows where that airline schedules it. Airlines can swap aircraft up to departure. ## Confirmed upgrade & award space on SEA to STS departures 2LNR tracks confirmed upgrade and award space on Alaska Airlines, segment by segment and date by date. Open the calendar for Seattle to Santa Rosa to see which departures have space, the next 14 days free on every product and the full horizon on Pro. Alaska Airlines award space was open on 13 of the 14 Seattle to Santa Rosa departure dates from October 19 to November 1 that 2LNR checked in the 7 days to October 19, 2026. ### See real availability Confirmed upgrade or award seats by date on the SEA to STS departures 2LNR tracks, checked against live inventory so you know what's open before you book. ### Set an alert Premium inventory turns over fast. Watch this route on Pro and 2LNR notifies you when space appears on a date you're tracking. ### Plan on the map See SEA to STS on the interactive route map, with schedules, connections, and route statistics. ## Airlines flying Seattle to Santa Rosa nonstop Carriers operating SEA to STS nonstop in the current schedule. Where 2LNR tracks the carrier, its departures show confirmed upgrade or award space by date. - [Alaska Airlines (AS) route map](https://2lnr.com/routes/airlines/as.md)\ [The aircraft AS flies](https://2lnr.com/seatmaps/as.md) See SEA to STS on the interactive map → ## Frequently asked questions about SEA to STS **How long is the flight from Seattle (SEA) to Santa Rosa (STS)?** Scheduled flight times from Seattle (SEA) to Santa Rosa (STS) run from 2h to 2h 8m across the departures in the schedule table on this page. The nonstop covers about 618 miles, and airlines adjust scheduled times by season, so confirm with the airline before you book. **Which airlines fly nonstop from SEA to STS?** Alaska Airlines is currently the only airline flying SEA to STS nonstop. 2LNR tracks confirmed upgrade and award space on Alaska Airlines. **How many flights a week are there from SEA to STS?** About 19 nonstop flights a week run between Seattle (SEA) and Santa Rosa (STS) 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 SEA to STS depart?** Scheduled SEA to STS nonstops in the next 7 days with service leave between 10:58 and 19:56, local time at Seattle. The schedule table on this page lists every departure by date, with its arrival time and aircraft. **Which flights operate SEA to STS nonstop?** In the schedule table on this page, SEA to STS nonstops fly as AS 504 and AS 1347 on Alaska Airlines. The table lists each departure by date with its times and aircraft. **How do I check upgrade or award availability on SEA to STS?** Open the SEA 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. Flying the other way? See [STS to SEA upgrade and award space](https://2lnr.com/routes/sts-sea.md). Award seats rather than schedules? See [Alaska Airlines award availability](https://2lnr.com/awards/as.md). Looking beyond this route? See [every route from Seattle (SEA)](https://2lnr.com/routes/sea.md), or [every route from Santa Rosa (STS)](https://2lnr.com/routes/sts.md). Nonstops to Santa Rosa (STS) from other airports within 150 miles of Seattle (SEA): - [Portland (PDX) to Santa Rosa (STS)](https://2lnr.com/routes/pdx-sts.md), 129 miles from SEA Nonstops from Seattle (SEA) to other airports within 150 miles of Santa Rosa (STS): - [Seattle (SEA) to Oakland (OAK)](https://2lnr.com/routes/sea-oak.md), 63 miles from STS - [Seattle (SEA) to San Francisco (SFO)](https://2lnr.com/routes/sea-sfo.md), 65 miles from STS - [Seattle (SEA) to Sacramento (SMF)](https://2lnr.com/routes/sea-smf.md), 66 miles from STS - [Seattle (SEA) to San Jose (SJC)](https://2lnr.com/routes/sea-sjc.md), 92 miles from STS - [Seattle (SEA) to Redding (RDD)](https://2lnr.com/routes/sea-rdd.md), 141 miles from STS Distances are great-circle between the airports, not driving distance. - [How Alaska upgrades clear](https://2lnr.com/about/as/upgrades.md) - [How to read award availability by date](https://2lnr.com/guides/award-availability.md) ## Never miss SEA to STS upgrade or award space See what's open by date on this route, the next 14 days free on every product and the full horizon on Pro. 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