Detroit to San Diego (DTW-SAN): Nonstop Upgrade & Award Space
Delta Air Lines flies nonstop between Detroit (DTW) and San Diego (SAN), roughly 25 times a week. With Delta Air Lines operating this route so often, premium seats still turn over daily, and upgrade or award space can open and close within hours. 2LNR tracks confirmed availability on every DTW to SAN departure, so you know which flights have space before you book.
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 DTW 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 Detroit 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 DTW 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 DTW to SAN on the interactive route map, with schedules, connections, and route statistics.
Airlines flying Detroit to San Diego nonstop
Carriers operating DTW to SAN nonstop in the current schedule. 2LNR tracks confirmed upgrade and award space on each of them.
- Delta Air Lines
Frequently asked questions about DTW to SAN
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