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When is the best time to submit TDAC when traveling to Thailand?

TDAC Thailand travel regulations Visa and immigration advice Travel tips Expat support

May 6, 2025

3 days ago

Uhapuk ******

ORIGINAL POSTER

Question:

So...

If I leave the USA on June 6,@1230(Friday)..with lay over in Japan ,and touch down, in BKK @1155(Saturday june7th)...

When would be the best time to put in the TDAC?

Wendy? Or Thursday?

) being it has to be 3 days exact...

ThankI for the info.😊

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TLDR : Answer Summary

The TDAC (Thailand Declaration of Arrival Card) should be submitted anytime within 3 days before your arrival in Bangkok. You can do this as early as June 5th or during your layover in Japan. Submitting it before leaving home or during online check-in is a convenient option, as it doesn't need to be exactly 3 days before arrival.

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Anna *********

I do it when I do online check in Super easy to remember and the timing works

2 days ago

Robbie *******

FFS

2 days ago

Uhapuk ******

ORIGINAL POSTER

Thanks for the info peeps.

😊

2 days ago

Ernst *********

So do it on the 5th, leisurely at home.

Or 6th, before you go to the airport.

You can also do it on your flight if you have wifi. Do it in Japan while on your layover with airport wifi.

Or do it when you land at Bangkok before you get to immigration.

I would do it before I leave home.

3 days ago

Bob **********

You can do it from Japan on your layover if not do it when you arrive

3 days ago

Marco *******

Anytime from 72hr before your arrival, even 5 minutes before

3 days ago

Phil *******

3 days ago

Wayne *********

It doesn’t have to be exactly 3 days, you can do it anytime within 3 days of arrival.

There are a number of medical questions, some of which would be useless if answered two weeks prior, hence the narrow timeframe.

3 days ago

Stuart *********

It doesn’t need to be exactly 3 days, just within 3 days of your arrival date.

If you have no access to a phone or computer you can do it at one of the terminals in the airport prior to immigration.

3 days ago

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Stuart *********

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Is it too late to complete the TDAC before my flight to Thailand, and will I be denied entry if I don't?

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