How can I extend my tax return when filing from abroad? Am not military service but should be within the period can extend, currently not giving me that option.

[Critter]

You can file an extension thru TT now  ONLY   if you are military ...  https://turbotax.intuit.com/irs-tax-extensions/

If not then you will need to mail in the form. https://www.irs.gov/pub/irs-pdf/f4868.pdf

Line 8—Out of the Country.  If you are out of the country on the regular due date of your return, check the box on line 8.