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Airline Reference

Thai Airways (TG)

Asian flag carrier based in Thailand, and is a member of Star Alliance.

IATA CodeTG
ICAO CodeTHA
CallsignTHAI
Operating StatusActive (per OpenFlights airline registry)
CountryThailand
CategoryAsian flag carrier
Airline AllianceStar Alliance

How TG Appears in a GDS PNR

When you see a segment line like this in a PNR, the airline code identifies Thai Airways:

2  TG 587 Y 15JUL 2*JFKLHR HK1  800A  2000P

The two-letter code TG at the start of the segment line is Thai Airways's IATA code — every flight segment operated by Thai Airways in a GDS PNR (Amadeus, Sabre, Galileo, or Worldspan) begins with this code, followed by the flight number.

About Thai Airways

Thai Airways is a asian flag carrier, based in Thailand, and is a member of Star Alliance. Its ICAO code, THA, is used for air traffic control and flight planning, while its radio callsign is “THAI”.

Pricing a Thai Airways Fare Across GDS Systems

Once a TG segment is sold, the fare quote and ticketing entry differ by system. The starting point in each is:

Amadeus:  FXP
Sabre:    WPNCB
Galileo:  FXP

Each of these prices the itinerary using the lowest applicable fare for the TG segment(s) in the PNR — the exact fare basis and rules still need to be checked against Thai Airways's current fare filing, since GDS pricing reflects what's filed, not a fixed rate.

What Star Alliance Membership Means for Booking

As a Star Alliance member, Thai Airways participates in the alliance's interline agreements — member airlines generally honor each other's status tiers for priority boarding and lounge access, and allow interline and codeshare itineraries to be ticketed on a single PNR. In practice, this means a client's itinerary can often mix Thai Airways with other Star Alliance carriers on one ticket, which matters when pricing multi-carrier routings or handling irregular operations (delays, misconnections) that involve more than one airline.

Booking Classes

Like most airlines, Thai Airways's fare classes follow the standard GDS booking-class letter system. See our complete booking class guide for what each letter (F, J, Y, and so on) typically means.

Frequently Asked Questions

What is Thai Airways's IATA code?

Thai Airways's IATA code is TG. This two-letter code appears at the start of every flight segment operated by Thai Airways in a GDS PNR.

What is Thai Airways's ICAO code?

Thai Airways's ICAO code is THA. The ICAO code is a separate, usually three-letter identifier used mainly in air traffic control and flight planning, distinct from the IATA code travel agents see in a PNR.

How do I convert a Thai Airways PNR to an itinerary?

Paste the raw PNR text into PNRGenius and it will automatically detect Thai Airways's segments (marked with the TG code) and build a clean, client-ready itinerary in seconds.

What alliance is Thai Airways part of?

Thai Airways is a member of Star Alliance.

Can Thai Airways be combined with other airlines on one ticket?

Yes — as a Star Alliance member, Thai Airways generally allows interline and codeshare itineraries with other Star Alliance carriers to be ticketed together, though the specific fare rules still depend on the fare basis used.

Convert a Thai Airways PNR to a Clean Itinerary

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