Tucson to San Diego (TUS-SAN): Nonstop Upgrade & Award Space
Southwest Airlines flies the TUS to SAN nonstop about 6 times a week. That's enough service to give you a real choice of departures, though premium seats don't sit unclaimed for long. 2LNR watches every TUS to SAN departure for confirmed upgrade and award space and can alert you when a date you're tracking opens up.
Data current as of July 21, 2026, refreshed on an ongoing basis as new schedules and seats are confirmed.
Confirmed upgrade & award space on every TUS to SAN departure
2LNR tracks confirmed upgrade and award availability on American, Delta, and Alaska and across 30 airlines, segment by segment, date by date. Open the calendar for Tucson to San Diego to see which departures have real space, or watch the route and get alerted when space opens.
See real availability
Confirmed upgrade and award seats on each TUS to SAN 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 TUS to SAN on the interactive route map, with schedules, connections, and route statistics.
Airlines flying Tucson to San Diego nonstop
Carriers operating TUS to SAN nonstop in the current schedule. 2LNR tracks confirmed upgrade and award space on each of them.
- Southwest Airlines
Frequently asked questions about TUS to SAN
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