With Thailand set to launch its exciting free domestic flights campaign for 200,000 international visitors this September–November 2025, travelers have the perfect excuse to go beyond Bangkok, Phuket, and Chiang Mai. The initiative, part of the Ministry of Tourism and Sports’ new strategy to spread tourism across the country, covers round-trip domestic tickets on participating airlines—giving you the chance to discover destinations you may not have considered before.
Here are five underrated Thai destinations worth booking with your free flight.
1. Nan
Nestled in northern Thailand, Nan is a cultural treasure known for its serene temples, traditional wooden houses, and scenic mountain views. Perfect for those seeking authenticity, Nan offers a slower pace of life while giving a glimpse into the old Lanna Kingdom. Don’t miss Wat Phumin, famous for its unique murals.
2. Trang
If you’ve ever wished for a quieter alternative to Krabi or Phuket, Trang is your spot. With white-sand beaches, emerald waters, and hidden caves, Trang is home to some of Thailand’s most beautiful islands, like Koh Kradan and Koh Muk. It’s paradise minus the hustle.
3. Phrae
One of Thailand’s oldest cities, Phrae boasts teakwood mansions, centuries-old temples, and a charming old town that feels untouched by mass tourism. For history lovers and photography enthusiasts, it’s a dream come true. The red cliffs of Phae Mueang Phi Forest Park add a natural wonder to the mix.
4. Nakhon Si Thammarat
Known as one of the cultural hearts of the South, Nakhon Si Thammarat combines heritage, beaches, and nature. Travelers can explore Wat Phra Mahathat, one of Thailand’s most important Buddhist temples, then head out to Khanom Beach to spot rare pink dolphins.
5. Udon Thani
In Thailand’s northeast, Udon Thani offers a different side of Thai culture with lively markets, spicy Isaan cuisine, and impressive archaeological sites. A highlight is the Red Lotus Lake (Talay Bua Daeng), where thousands of pink lotus flowers bloom across the water during the cool season.
Make the Most of Your Free Flight
Thailand’s campaign isn’t just about giving away flights—it’s about inspiring travelers to experience the country more fully. By venturing into these secondary destinations, you’ll not only enjoy authentic adventures but also support local communities that are ready to welcome visitors with open arms.
Travel Tip: Once the campaign goes live, check availability quickly—these free domestic flights will be in high demand. Pair them with your international flight booking for the ultimate Thailand adventure.