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Answereda year ago

Do I need to show my TDAC at Heathrow before flying to Thailand?

THIM and TDAC notice
Need a clearer THIM and TDAC explanation? Read the THIM guide on thim.in.th.
Wayne **********
asked Sep 1, 2025
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Hi all struggling to do dtac in uk do I need to show it at Heathrow before I fly in 3 days time?
Answer summary
The requirement to show the TDAC (Thailand Digital Arrival Card) at Heathrow before your flight depends on the airline. While some airlines may request it during check-in, others may not. Importantly, the TDAC must be filled out within 72 hours prior to your arrival in Bangkok; thus, if you are flying in 3 days, you might be doing it too early. Although Thai immigration can access your TDAC information electronically, it's advisable to print it out as some airlines might still require it. Be cautious of scam websites—always use the official TDAC site which allows the form to be completed for free.
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Peter *********
Peter *********
If you want to do early put tomorrows date then up date before you fly thats what i did just to make sure it accepted all the info
Peter *********
Peter *********
Heathrow Check in wanted to see mine
Max *************
Max *************
@Peter ********
Heathrow check-in has nothing to do with your TDAC. You don't have to submit one, you can actually do it on arrival. But it's a waste of time.
Lynnette *******
Lynnette *******
Why are you filling it in now? It clearly says within the 72 hours before ARRIVING.
Nigel *******
Nigel *******
I am also flying on Wednesday, going to do mine tomorrow afternoon. As I don’t land until 13.25 on Thursday local time. Which is where the 72 hours is counted from.
Aditya *******
Aditya *******
@Nigel ******
try
@Jet***
esim

Www.Jetpacglobal.Com
Lynnette *******
Lynnette *******
@Nigel ******
yes, 72 hours before arriving/ landing. Says on the TDAC site.
Max *************
Max *************
@Lynnette ******
72 hours counting from the date of arrival.
Lynnette *******
Lynnette *******
@Greg **********
take it up with the Thai authorities, they are the ones who put the 72 hours window to complete the form. Most of us can count back 72 hours from arriving and fill in the form successfully in that period. Sadly, there are those who constantly argue and want every post altered because they find it difficult.
Greg ***********
Greg ***********
@Lynnette ******
"yes, 72 hours before arriving" . . . . . 85 hours or 126 hours would also be "72 hours before arriving". . . it is a pretty misleading wording
Lynnette *******
Lynnette *******
@Greg **********
As I said. 72 hours before you arrive. That is the earliest you can fill it in. That's the start of the count down. Nowhere does it say "before" 72 hours.
Greg ***********
Greg ***********
@Lynnette ******
not "before" 72 hours. It can be done "within" 72 hours of planned arrival
Lynnette *******
Lynnette *******
@Max ************
it's on the TDAC page. As I said.
Greg ***********
Greg ***********
@Wayne *********
be careful, there are scammer websites out there who will try to make you pay for it. The official TDAC website lets you fill out for free
Greg ***********
Greg ***********
up from 72 hours before your intended arrival at the airport in Bangkok you can fill out the TDAC. After submitting, you will receive an email with a QR code. You can print it or leave it on your phone. I recommend printing. Some airlines want to see it upon check-in to the flight, other won't be bothered. When passing Immigration, they mostly won't ask you for it, because they can see it on their computer screens after having scanned your passport. Kindly note: The visa number and the planned departure from Thailand are NO mandatory fields and can be left empty
Jim ********
Jim ********
You are probably doing it too early if you fly in 3 days time
Christer *****
Christer *****
The main site was down for maintenance yesterday
Frank *********
Frank *********
@Christer ****
unbelievable. Make it an obligation and then making it not work
Max *************
Max *************
It's actually 3 days counting from the date of arrival.
Christer *****
Christer *****
@Frank ********
You can fill it in on arrival, still. Many people did in July.
Frank *********
Frank *********
@Max ************
I will spell it out for you:

Does it give people stress having only 3 days and not knowing how long the application will be out of service? Yes

Should it need maintenance already after being in operation for only a couple of months? No

Does maintenance have to take an entire day? No

Is this the first problem with it? No

Is it always like this with any digital application that Thailand launches? Yes
Max *************
Max *************
@Frank ********
You haven't heard about websites being maintained before? It happens all the time.
Frank *********
Frank *********
@Max ************
yes, and it should not be like that
Dave *******
Dave *******
@Christer ****
do you mean the immigration side of things in Bangkok?
Christer *****
Christer *****
@Dave ******
this one. They had a notice when you tried to log in

www . thaievisa . go . th/
David *********
David *********
Not at Heathrow,will be on Thai immigration system when you go through immigration
Graham ******
Graham ******
That depends on the airline, I did (China Eastern)

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