Thai Airways International Flight TG403 Deals & Information (2025/2026)

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Thai Airways International Flight 403 Route Deals From $111

The cheapest prices found with in the last 7 days for return flights were $182 and $111 for one-way flights to Changi for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Jun 25 - Sat, Jun 28
BKK
Suvarnabhumi Intl.
SIN
Changi
$182 Roundtrip, found 1 day ago
$182
Roundtrip
found 1 day ago
Select Thai Airways International flight, departing Wed, Jun 25 from Suvarnabhumi Intl. to Changi, returning Sat, Jun 28, priced at $182 found 1 day ago
Tue, Jul 8 - Sat, Jul 26
BKK
Suvarnabhumi Intl.
SIN
Changi
$191 Roundtrip, found 2 hours ago
$191
Roundtrip
found 2 hours ago
Select Thai Airways International flight, departing Tue, Jul 8 from Suvarnabhumi Intl. to Changi, returning Sat, Jul 26, priced at $191 found 2 hours ago
Fri, Jul 11 - Sun, Jul 20
BKK
Suvarnabhumi Intl.
SIN
Changi
$200 Roundtrip, found 1 hour ago
$200
Roundtrip
found 1 hour ago
Select Thai Airways International flight, departing Fri, Jul 11 from Suvarnabhumi Intl. to Changi, returning Sun, Jul 20, priced at $200 found 1 hour ago
Sat, Jul 5 - Mon, Jul 7
BKK
Suvarnabhumi Intl.
SIN
Changi
$239 Roundtrip, found 2 days ago
$239
Roundtrip
found 2 days ago
Select Thai Airways International flight, departing Sat, Jul 5 from Suvarnabhumi Intl. to Changi, returning Mon, Jul 7, priced at $239 found 2 days ago

Frequently asked questions

What route does flight number TG403 take?
TG403 travels between BKK and Singapore Airport (SIN-Changi) and flies direct. This service takes 2 hours and 15 minutes.
What kind of plane is on flight number TG403?
Get ready to cruise aboard a Boeing 777 if you’re traveling on flight TG403. Nearly all services from Suvarnabhumi Intl. Airport (BKK) to SIN are operated using this type of plane.
If I am not able to travel due to COVID-19, can I change my flight to a later date?
For more info about changing your TG403 flight with Travelocity, please visit our Customer Service Portal.