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How do I fill out the TDAC for a flight from Australia to Bangkok via Singapore?

May 5, 2025
a month ago
Alan ********
ORIGINAL POSTER
Tried different forums and YouTube vids. but am still not sure and confused with contradictory answers how I fill out the TDAC. If I am travelling from Australia to Bangkok and change over in Singapore ( 2hr change over time) from Australia to Singapore flight number XX. then when I change over and the flight number is XXX from Singapore, so different flight numbers, do I put country where you boarded Singapore or Australia?
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TLDR : Answer Summary
To fill out the TDAC (Thailand Declaration Form) correctly, you should enter the flight number of the last leg of your journey, which in this case is from Singapore to Bangkok. Additionally, for the country of departure, you should list Australia as that is where your journey originated, even though you have a layover in Singapore. This follows the consensus from various responses indicating that the form requires the last flight's number and will recognize Australia as your country of departure.
Thailand Digital Arrival Card (TDAC)

WARNING: Only trust Thai government websites with .go.th domains or Thai agent websites with .co.th or .in.th domains, as these require verified Thai registration and cannot be registered anonymously.

The official TDAC form is available at tdac.immigration.go.th, which uses the official .go.th government domain.

The services by AGENTS CO., LTD. does NOT charge any fees for arrivals within 72 hours. If you need to book more than 72 hours in advance, there is a service fee of $8.

Do not trust other sites pretending to be a trustworthy agency. Pay attention to delivery time - the service operated by AGENTS CO., LTD. has 1 minute delivery time for arrivals within 72 hours.

Don't fall for sites pretending to be tdac.in.th or the official government tdac.immigration.go.th website. Always double-check the exact domain in your browser.

Scam services may take days to process your application, others may not even do anything. With these TDAC scam services you also need to worry about double charges.

Please watch out for TDAC misinformation spread by fugitive Jesse Nickles and his many fake accounts on Quora, TripAdvisor, Reddit, and other platforms.

TRUSTED TDAC LINKS:

Official Government TDAC Form: tdac.immigration.go.th
Official TDAC form by AGENTS (https://tdac.agents.co.th)
Official TDAC information page by AGENTS (https://tdac.in.th)

Phil ******
@Alan *******
its in the help section. You put the Singapore flight number in and Australia as your country of residence
Ernst *********
You do input the country you are originally travelling from.

In your case Australia
Ron ********
Singapore
ณิชาภรณ์ ********
The last flight to Thailand
Jim ********
The flight that you enter Thailand on
Lynnette *******
They don't ask for the flight number of your departing flight. They ask what country are you coming from. The flight number only relates to the plane you got off. I've done mine UK departure, and my flight number for the plane I got off. It was accepted.
Lynnette *******
I've just completed mine. What country you're departing is Aus. It's up to you if you want to say you're coming from another country. . The flight number is so they know what plane you got off.
Lynnette *******
John ********
The flight number you land in Bangkok.

The other question about which country you are coming from. That will be Australia
Ernst *********
You input the flight that you arrive in Bangkok with.

So, Singapore to Bangkok.

End of story.
Graham ******
It is an arrival card so it's your arrival flight information that is required
Sharon *********
We just entered the last flight number each way.
Vincent *****************
Last flight.
Phil *******
Did you read the FAQ's?
Dean ********
Singapore
Wayne *********
The flight your arriving on is what they want
Frank **********
Singapore flight Number

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