I possibly need to leave a car for about 10 weeks, I see the long term car park is 140THB a day is there any other options, normally I would 1 way car rental from Chiang Mai but it would seem that's being hard to arrange and flying isn't a option as I have some other places to go before we go to Europe.

Thanks for any suggestions

I normally book a night at   At Residence Suvarnabhumi Hotel in Lat Krabang which has free parking-for how long I do not know. Worth a try.

So 10 weeks would cost you 9,800 baht.  Very cheap really, not sure what better options you would have.  I don't think any nearby cheap hotel would let you leave your car for ten weeks - a couple of nights maybe.  But you never know if you book a couple of nights with them at either end of the trip?

I need to leave my car at Suvarnabhumi for 5 days late December through early January.

 

The main car park seems to be really busy these days.

Does anyone know if the "Long term parking" near the "Public transport centre" and the shuttle bus from there is doable at all?