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How do I travel with a dual passport from the UK to Thailand and handle the TDAC digital form?

Dual Nationality Visa and Immigration Thailand Travel TDAC Form British Passport Thai Passport

Jun 19, 2025

25 days ago

Val *********

ORIGINAL POSTER

Has anyone travelled with dual passport using British passport to leave UK and entering Thailand with Thai passport? How do you deal with TDAC digital form? Not sure what to do as not done this before. Any ideas? TIA

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TLDR : Answer Summary

Travelers with dual nationality can exit the UK using their British passport and enter Thailand with their Thai passport without needing to complete the TDAC digital form. It's important to book flight tickets under the name matching the passport used for entry to avoid issues. After exiting the UK, travelers can switch to their Thai passport mid-air, and upon arrival in Thailand, they should use the Thai immigration line. However, airlines may inquire about the TDAC form, so be prepared to clarify your situation as necessary.

Thailand Digital Arrival Card (TDAC)

View the most updated information about the Thailand Digital Arrival Card (TDAC) to understand the latest requirements and eligibility criteria.
For immediate assistance, contact Thai Visa Centre directly via LINE at @ThaiVisaCentre or Email them.
Explore recent discussions by using the Thailand Digital Arrival Card (TDAC) tag in the search box at the top of the page.
Join the Thai Visa Advice Facebook Group to ask your questions, and get advice from others.

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 agents.co.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
Official TDAC information page by AGENTS (tdac.agents.co.th)

David **********

If you have a thai passport why would you do a dtac

24 days ago

Val *********

ORIGINAL POSTER

@David *********

because I bought our flight using English passport so my ticket is matched with my name. Also I've just had my Thai passport issued from the Thai embassy in London after I bought the tickets

24 days ago

David **********

@Val ********

if you have a thai passport you don't need a tdac

24 days ago

Reply to

David **********

Martyn *******

Only issue may be the airline asking if you have completed the tdac

24 days ago

Jonnie *******

@Martyn ******

they can ask, a few days ago when departing Qatar when returning to Thailand they asked me to show them the TDAC was completed, I informed them I don’t need to register it prior to checkin, no issue with that.

Also the poster can simply show the second passport confirming TDAC not needed in their instance, I travel on two passports and I’ve been asked a couple times to show my visa for the arriving country which may be on that second PP, shouldn’t be an issue

24 days ago

Martyn *******

My experience was with Qatar airways, they only asked

24 days ago

Jim *********

@Martyn ******

. Qatar asked and wanted to see dtac in Dublin this week

24 days ago

Reply to

Jim *********

Val *********

ORIGINAL POSTER

@Martyn ******

yes I've read somewhere that some airlines require you to do TDAC when do online check in, we are flying EVA air. Not sure how strick the are

24 days ago

Reply to

Val *********

Paul **********

Yep, you go out using the UK then mid air change over to Thai passport. Both passports will be linked as a dual national. Straight through the Thai line at BKK though most are mixed now anyway I find.

25 days ago

Gerg **********

@Paul *********

They let me go through the Thai line because I was with my Thai wife.

24 days ago

Reply to

Gerg **********

Ian ***********

If the name is different, book the ticket in the Thai passport name or you may have problems using the Thai passport to enter

25 days ago

Gerg **********

@Ian **********

My wife’s U.S. Passport has my surname and her Thai passport has her Thai maiden name. She just books her ticket in her married name and takes a copy of her U.S. marriage license with her if there is any question on the different last names.

23 days ago

Val *********

ORIGINAL POSTER

@Gerg *********

that's exactly the same as me. Flying from UK in 2 weeks. I won't do the TDAC but my husband will. Let's see if it works with online check-in without TDAC. Flying with EVA air

23 days ago

Gerg **********

@Val ********

I didn’t think about TDAC. Let us know how it went please.

23 days ago

Val *********

ORIGINAL POSTER

@Gerg *********

will do 👍

22 days ago

Reply to

Val *********

Brandon ************

If you're entering Thailand with a Thai passport you do not need to do a TDAC.

25 days ago

Ian ***********

@Brandon ***********

if a dual national uses the UK passport to book the ticket they could have problems entering Thailand, they could insist on treating you as a British national which would require visa on entry.

Best to book the ticket using Thai nationality to avoid any nonsense at Thai immigration.

22 days ago

Brandon ************

@Ian **********

not really. Thailand doesn't care how you booked your ticket. They only care which passport you use to enter the country

22 days ago

Ian ***********

@Brandon ***********

I know people who have been warned for doing it

22 days ago

Reply to

Ian ***********

Barry *********