If you're planning to fly with Thai Airways and are wondering how early you can check in, it's important to know the airline’s check-in options and timings to make your journey as smooth as possible. Thai Airways offers several convenient check-in methods: online check-in, mobile check-in, airport counter check-in, and self-service kiosks at select airports. Online check-in with Thai Airways opens 24 hours before your scheduled flight departure and closes 1 hour before international flights. This is one of the most convenient options, allowing you to check in from your home, hotel, or even while on the go. By using the Thai Airways website or mobile app, you can confirm your flight, select your seat, and get your boarding pass sent directly to your email or smartphone. If you’re traveling with only carry-on luggage, online check-in allows you to skip the counter and go straight to the security check, saving you valuable time at the airport. For passengers who need to check bags or prefer checking in at the airport, Thai Airways airport check-in counters generally open 3 hours before international flights and close 1 hour before departure. It’s strongly recommended that passengers arrive at the airport at least 3 hours prior to international flights to allow time for check-in, baggage drop, immigration, security screening, and reaching the gate. Even though Thai Airways is known for its efficient service, long queues and peak-hour traffic at major international airports like Bangkok Suvarnabhumi can delay your journey if you arrive late. For domestic flights within Thailand, check-in counters typically open 2 hours before departure and close 45 minutes before the flight, though some smaller airports may vary slightly. Thai Airways also offers self-service kiosks at certain major airports, including Bangkok, allowing you to check in quickly and print your boarding pass and baggage tags without waiting in line. This option is ideal for tech-savvy travelers or those in a hurry. Additionally, premium passengers—such as Royal Silk Class and Royal First Class travelers—benefit from dedicated check-in counters and priority services, which significantly reduce waiting times and provide a more relaxed experience. It's also worth noting that security and immigration can sometimes take longer depending on the airport and time of day, so giving yourself enough time is always a smart move. Boarding gates typically close 20–30 minutes before departure, so completing the check-in process well in advance ensures you have a stress-free experience. In summary, if you're asking how early can you check in with Thai Airways, the answer is straightforward: online check-in opens 24 hours before departure, and airport counters open 3 hours before international flights and 2 hours before domestic ones. By planning your arrival and choosing the right check-in method for your needs, you can enjoy a smooth, comfortable start to your journey with Thai Airways, whether you're flying short haul within Thailand or heading to a destination across the globe.