How to book your flight ticket online with Thai Smile?
First of all be careful .... Thai Smile is a sister company of Thai Airways and you can book flights from Thai Smile also at the web-site from Thai Airways. But ..... they are more expensive there! So book your flight with Thai Smile via the web-site from Thai Smile.
Also be aware that Thai Smile flies on Don Muang (DMK) and Suvarnabhumi (BKK). The latter could be handy when you have an flight to catch on Suvarnabhumi.
So at 6 June 2015 I made a test booking online with Thai Smile and noted what they are trying to sell you while you are booking your cheap flight. Mind you, this might change in the future!
For Thai Smile I started HERE but just follow me step-by-step
1. Choose Origin / Destination
2. Choose Return / One-way
3. Choose Departing / Return date
4. Choose number of Adults / Children / Infants
5. Hit "Booking"
1. Choose Day + Time + Fare (Promo, Save, Flexi or Plus)
2. Hit "Continue"
1. Fill in Passenger information
2. Fill in Contact information
3. Optional Seat Selection (free of charge)
4. Hit "Continue"
1. Choose payment Direct Debit / ATM / Counter / Credit-Card
There seems to be no extra charge for any kind of payment