CATHAY X SIAM PIWAT

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Take your rewarding journey to greater heights at Siam Piwat Group’s malls

Enjoy seamless coins conversion and exclusive member offers with Cathay.

From 1 August 2023, you can convert ONESIAM Coins to Asia Miles and vice versa to enjoy even more rewards on the ground and in the air with our Siam Piwat Group’s malls partnership launch.

On top of shopping and dining at ICONSIAM, Siam Paragon, Siam Center, and Siam Discovery, as a ONESIAM Member, you can boost your rewarding journey by converting your ONESIAM Coins to Asia Miles. You can turn your miles into flights, hotel stays, and many more exciting lifestyle and travel rewards from our 800+ partners worldwide. What’s more? You can enjoy exclusive services and benefits when you fly with Cathay Pacific such as priority online check-in and special ticket deals.

Two-way conversion

Steps to convert your Asia Miles and ONESIAM Coins

Convert ONESIAM Coins to Asia Miles

2,400 ONESIAM Coins = 400

Step 1: Log on to the ONESIAM SuperApp to convert your points and select the “Cathay” menu button in the Convert Out section
Step 2: Fill in the required details and OTP number, and click the “Continue” button
Step 3: Inform the amount of ONESIAM Coins you want to convert and click the “Agree” button
Step 4: Redeem Cathay awards with your miles to discover an elevated life, in the air or on the ground

Convert now

Convert Asia Miles to ONESIAM Coins

2,000 = 2,800 ONESIAM Coins

Step 1: Click the below “Convert now” button
Step 2: Fill in the required details and click the “Continue” button
Step 3: Inform the amount of Asia Miles you want to convert into ONESIAM Coins and proceed following the instructions
Step 4: Upon successful conversion, you will receive an email confirmation

Convert now

Elevate your rewarding journey at Siam Piwat Group’s malls. You will also be able to boost your miles and enjoy extra benefits exclusively for Cathay members!

Siam Piwat Group’s Malls and SuperApp Privileges

From now until 15 December 2026, Cathay members who register for ONESIAM membership via SuperApp for the first time will enjoy the following privileges:

Siam Piwat Group’s Malls:

Free THB50 cash voucher valid at SIAM Participating Stores (Siam Center, Siam Discovery, Siam Paragon, and ICONSIAM).
A one-off free parking voucher for up to 8 hours at SIAM Car Park.

ONESIAM SuperApp:

THB100 promotion code when spending a minimum of THB500 in a single transaction via the ONESIAM SuperApp.
Monthly special deals for shopping via ONESIAM SuperApp or at participating stores.

All privileges valid 30 days after customer download & register

_{Terms and conditions apply. For more information and ONESIAM member sign-up, please visit ONESIAM SuperApp}