How can I file a 2019 return in Jan 2024?

[DoninGA]

TurboTax does not support tax year 2019.

You will need to seek out a local tax professional to assist you in completing the 2019 tax return.

Also, note that any tax refund on the 2019 return will not be paid as it is beyond the three year limit from the due date of the 2019 tax return.

[VolvoGirl]

If you have a simple return you can fill out the forms by hand. Here are some basic forms…..

Here is the IRS 2019 Form 1040
https://www.irs.gov/pub/irs-prior/f1040--2019.pdf

or if you want bigger type use 1040SR for Seniors,
https://www.irs.gov/pub/irs-prior/f1040s--2019.pdf

And 2019 Instructions
https://www.irs.gov/pub/irs-prior/i1040gi--2019.pdf

2019 Tax and EIC Tables
https://www.irs.gov/pub/irs-prior/i1040tt--2019.pdf

Sch 1 : https://www.irs.gov/pub/irs-prior/f1040s1--2019.pdf
Sch 2 : https://www.irs.gov/pub/irs-prior/f1040s2--2019.pdf
Sch 3 : https://www.irs.gov/pub/irs-prior/f1040s3--2019.pdf

You need to get state from your state's website.