Grab a quick breakfast at BLR Terminal (e.g., Café Coffee Day or Food Plaza) so you're comfortable for the morning flight; airport outlets typically open from 4:00–5:00am for early flights.
Take a direct or one-stop morning flight (approx 4h) from Kempegowda to Suvarnabhumi; factor immigration and transfer time (Bangkok is +1.5 hours ahead of India).
Light evening walk in the Old City or Khao San Road to get acclimatised — lively street food and local vibes; Khao San is open 24/7 but shops/stalls peak after 6:00pm.
Visit the Grand Palace and Temple of the Emerald Buddha, Bangkok's most iconic complex; open 8:30am–3:30pm — dress modestly (shoulders & knees covered).
Full-day trip visiting Maya Bay (regulated access), Viking Cave, Monkey Beach, and snorkeling spots — depart ~7:30am, return ~4:30–5:30pm; confirm weather and sea conditions in October as it's shoulder-monsoon season.
Half- or full-day tour by longtail or speedboat to Phang Nga Bay, exploring limestone karsts, sea caves (canoeing), and James Bond Island; tours usually run 8:00am–4:00pm and are weather-dependent in October.
Take an evening flight back to Bangkok (1h20m). Book flight that aligns with your international departure time on Day 7; domestic flights run frequently into the evening.
If energy allows, enjoy dinner at Asiatique (open 4:00pm–midnight) or take an early evening Chao Phraya dinner cruise (departs around 7:00–8:00pm) for a scenic end to the island leg.
Quick shopping stop for gifts, snacks and last-minute essentials; Siam Paragon and MBK open from ~10:00am but some kiosks open earlier — if you have a late-morning flight, go straight to the airport.
Have a light lunch near your hotel or at the airport — Suvarnabhumi has many good food options open 24/7; aim to arrive at the airport 2.5–3 hours before international departure.
Depart Bangkok to Bengaluru; typical flight time ~4h and arrive with India time adjustment. Ensure all immigration and baggage formalities are completed early.