How to Call Thailand From the US - Cheapest Options 2026 | +66 Guide

March 18, 2026 2 min read BubblyPhone Team

Call Thailand from the US starting at $0.01/min for landlines. Complete dialling guide with +66 country code, Bangkok area code, and cheapest calling options.

Thailand is a major calling destination from the US — for expats, travelers, retirees, and business contacts. Thai phone numbers follow a simple format once you know the rules, and VoIP rates are among the cheapest in Southeast Asia.

This guide covers how to dial Thai numbers correctly and the most affordable options for calling Thailand.

How to Dial Thailand From the US

+66 + Number (drop the leading 0) Bangkok landline: +66 2 123 4567 Mobile: +66 81 234 5678 Mobile: +66 89 123 4567 Chiang Mai landline: +66 53 123 456

Step by Step

Dial + (or 011 from a US landline)

Dial 66 (Thailand country code)

Drop the leading 0 and dial the rest

Example: A Thai person gives you 081-234-5678. You dial +66 81 234 5678 (remove the 0).

Thailand Area Codes

Bangkok is the only city with a 1-digit area code (2). All other regions have 2-digit codes.

Thai Mobile Numbers

All Thai mobile numbers start with 0 followed by 6, 8, or 9 (domestically). From the US, drop the 0:

Thai mobile numbers are 10 digits domestic (0XX-XXX-XXXX) or 11 digits international (+66 XX XXX XXXX).

Cheapest Ways to Call Thailand From the US

Thailand landline rates are among the cheapest in Asia. A 60-minute call to a Bangkok hotel costs $0.60 on BubblyPhone vs $210 on AT&T.

Best Option by Situation

Calling family or friends

LINE app — LINE is the dominant messaging app in Thailand (not WhatsApp). 52M+ users. Free voice and video calls. If your Thai contact has a smartphone, they almost certainly have LINE.

Calling hotels and businesses

BubblyPhone at $0.01/min for Bangkok landlines. Perfect for booking hotels, restaurants, or calling tour operators.

Calling Thai mobile numbers

BubblyPhone or Google Voice at $0.03/min. For frequent callers, Rebtel at $0.02/min with plan.

Tips for Calling Thailand

Time difference: Thailand is 12 hours ahead of EST (ICT, UTC+7). 8 PM EST = 8 AM Thailand next day.

LINE, not WhatsApp: Thailand primarily uses LINE for messaging, not WhatsApp. Download LINE if you want to text/call Thai contacts for free.

Tourist areas: Hotels in Bangkok, Phuket, and Chiang Mai often have English-speaking reception. Call between 8 AM-10 PM local time.

Songkran (Thai New Year): April 13-15 — businesses closed, phone lines busy.

SIM cards: If you are traveling to Thailand, a local SIM (AIS, DTAC, or True) costs $5-$10 at any 7-Eleven. Better than international calling for local use.

Summary

Calling Thailand from the US costs just $0.01/min for landlines and $0.03/min for mobiles with BubblyPhone. Use LINE (not WhatsApp) for free calls to Thai contacts with smartphones. Dial +66, drop the leading 0, and you are connected.