Leave Mönchsroth around 05:30–06:00. On a Sunday, the limiting factor is usually the first local bus: check the exact connection in the DB Navigator app shortly before travelling, including the regional bus from Mönchsroth toward Dinkelsbühl or Crailsheim. A realistic public-transport journey takes roughly 3–4 hours and may involve a bus, a regional train toward Stuttgart, and then the S-Bahn or airport connection to Flughafen/Messe. Build in at least 30–45 minutes of contingency time, as missed rural connections can add a long wait. Aim to arrive at the airport around 10:00 rather than timing it tightly for 11:00; use the airport railway station and follow signs to the relevant terminal.
If you arrive with time to spare, visit the Stuttgart Airport observation deck for around 30–45 minutes, provided it is open that day. It is a pleasant way to orient yourself and watch departures, but access and opening hours can vary, so treat it as optional rather than essential. For breakfast or an early lunch, use the Flughafen Stuttgart food court in the terminal complex; allow approximately €10–20 per person. Sunday choices are generally practical rather than destination dining, so buying something soon after arrival is sensible, especially before security.
If your schedule allows, spend about 45 minutes at the Stuttgart Airport visitor centre, a compact aviation-focused stop that keeps you close to the terminals. Check its Sunday opening status in advance, since airport attractions may operate shorter hours. Then proceed to your airline’s check-in area and security screening: for a European flight, be at the terminal at least two hours before departure, and allow closer to three hours for long-haul travel or checked baggage. Keep your ticket and identification ready, and avoid leaving the airport grounds once you have entered the departure process.