Air Asia is low cost career of Kuala Lumpur as airline hub. On the other hand, Thai air Asia X is LCC of Bangkok Don Muangdon airport as airline hub.
Air Asia have a few promotions as Big sales in a year. I found good value round tickets between Tokyo NARITA to Bangkok Don Muang in last September, so I booked the tickets for 25k jpy(nealy 230 USD).
Market price of tickets between Bangkok and Tokyo
As you know, market prices of tickets depends on timing and seasonal. Limited economy class, the lowest prices of round tickets are following;
- Japan Airline; around 540USD
- ANA; around 540USD
- Thai airways; around 360USD
- Thai air Asia X; around 180USD
- Scoot; around 180USD
It is difficult to find the lowest prices of LCC tickets unless you focus on the Sale and these tickets do not allow to check baggages and no t include any in-flight meals. I think it seemed to be hard travel.
The prices of tickets of Full service careers are more expensive than those of LCC though FSC provides in-flight meals, checked baggages and other soft services.
We can find good price of tickets of FSC as long as you check on flexible schedule. However it might be tough on additional 360USD payments.
If you accept a transit in other countries,
- Cathey pacific airline
- Vietnam airline
- Malaysia airline
- China airline
These airlines would be your options. I recommend Malaysia airline since they often have big promotions for business class and we can buy the business class for just around 720USD. If you have enough budget for your travel, I recommend it so much.
When you cannot find any inexpensive tickets, why not check STW travel agent.
(I am sorry but this agent supports only in Japanese)
STW provides travel package included air tickets and accommodations so you have to choice a package of many they provide. However you can travel for best price range.
Combine an award tickets
Personally I think it's the best way to use an award tickets of Star alliance or One world. It would be a little bit more difficult for everyone who do not often travel abroad though if you save up miles, lets do that!