Best fit. Nonstop Allegiant is the cheapest and fastest. Also has first-class connections on Delta/American if comfort matters more than nonstop.
Recommended defaultI checked SRQ, TPA, RSW, PIE, and PGD — excluding Orlando per your note. Prices below were visible on Google Flights at May 14, 2026 5:00 PM UTC and can move fast.
SRQ → AUS nonstop: 12:52 PM → 2:27 PM, 2h35m, around $142 round trip. Tradeoff: no true first class and baggage is not included in the shown fare.
Best first-class fare found: SRQ Delta 7:51 PM → 12:31 AM+1 via ATL at about $834 round trip. Best nonstop first-class: TPA Delta 12:17 PM → 2:05 PM at about $1,032 round trip.
Jump to first-class optionsBest fit. Nonstop Allegiant is the cheapest and fastest. Also has first-class connections on Delta/American if comfort matters more than nonstop.
Recommended defaultBest if you want multiple nonstop choices or nonstop Delta first class. More airline depth, but you have the Tampa drive.
Best premium nonstopSolid backup if schedule beats SRQ/TPA. No nonstop found; first-class options are available but not cheaper than SRQ.
Backup onlyPIE / St. Pete-Clearwater: no matching PIE → AUS results for Jun 1–5. Google suggested nearby TPA from $242 and SRQ from $142.
PGD / Punta Gorda: no matching PGD → AUS results for Jun 1–5. Google suggested RSW from $377, SRQ from $142, TPA from $242.
MCO / Orlando: intentionally excluded because you said not to drive that far.
Value/ease: SRQ Allegiant nonstop at ~$142 RT.
Best mainstream nonstop: TPA Delta nonstop at ~$455 economy or ~$1,032 first.
Best first-class value: SRQ Delta first at ~$834 RT if you can tolerate a late arrival.
Before buying: re-check baggage, seat selection, refund/change rules, and exact return segments on the airline checkout page.