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Amadeus ST Command: Request Advance Seats

A complete guide to the ST command in Amadeus — how to request seats in advance for passengers and flight segments, including seat preferences and specific seat numbers.

Seat selection is one of the most valued services a travel agent can offer. Passengers want to sit together, near the window, on the aisle, or in a specific part of the cabin, and confirming their seats in advance removes a source of stress from their journey. The ST command is the Amadeus entry that makes this possible. It allows you to request seats in advance for passengers and flight segments, either by preference (window, aisle, non-smoking) or by a specific seat number. This guide explains what ST does, the syntax for every variation, and when it should be used.

What Does the ST Command Do?

ST is the Amadeus GDS command used to request seats in advance for passengers and flight segments.

Category: Advance Seat Request.

It allows you to request a seat preference, specific seat number, or multiple seats for passengers and flight segments. Before making the request, it is good practice to display the seat map with SM to see which seats are available.

Request a Seat for All Segments

Request a non-smoking seat for all segments:

ST

Request a seat using specific seat options for all segments:

ST/WI

Request a seat for passenger 1 on all segments:

ST/P1

The /P1 option limits the request to passenger 1, leaving other passengers unchanged.

Request a Seat for a Specific Segment

Request a seat for segment 3:

ST/S/S3

Request a specific seat preference for passenger 2 on segment 4:

ST/A/S4/P2

This combines the seat preference option, the segment number, and the passenger number in a single entry — useful when a specific traveller needs a specific type of seat on a specific flight.

Request a Specific Seat Number

Request seat 2A for all segments:

ST/2A

Request seat 2A for segment 2:

ST/2A/S2

Request more than one specific seat number:

ST/4K/6K

This requests seat 4K on one segment and 6K on another, or two seats for two passengers, depending on the booking structure. It is useful when a family or couple wants to sit together in specific rows.

When to Use ST

Use ST when you need to request an advance seat preference or specific seat number for a passenger before travel. Typical scenarios include:

Requesting a window or aisle seat for a customer before departure.
Assigning a specific seat (e.g. 2A or 4K) that the passenger has requested.
Requesting seats for a family or couple so they can sit together.
Selecting seats for a passenger on a specific segment only.
Requesting non-smoking seats on applicable flights.
Requesting seats for one passenger in a multi-passenger PNR.
Adding seat requests after the booking is confirmed and before ticketing.

How ST Fits Into Your Seat Request Workflow

A typical seat request session using ST might look like this:

Retrieve the PNR with RT and confirm the itinerary.
Display the seat map with SM to see which seats are available.
Identify the seat preference or specific seat number the passenger wants.
Enter ST with the appropriate options for segment, passenger, or seat number.
Verify the seat request was applied by redisplaying the PNR.
If seats need to be changed, cancel them with SX before re-requesting.

How ST Relates to Other Seat Commands

ST → requests seats for individual passengers and segments.
STG → requests seats for group PNRs.
SM → displays the aircraft seat map.
SX → cancels seat requests from all or specific segments.
RT → retrieves a live PNR before seat selection.
RH → displays the PNR history, including seat request changes.

The workflow is always the same: SM displays the map, ST requests the seats for individuals, STG for groups, and SX cancels them when changes are needed.

Important: Not every airline or fare supports advance seat requests. Some carriers only accept seat requests after ticketing, others restrict seat selection on certain fare classes, and some flights may not offer advance seat selection at all. If the ST entry is rejected, confirm the airline’s policy before retrying.

Always retrieve the PNR and display the seat map first with SM — selecting a seat that does not exist or is already occupied will result in a rejection.

Frequently Asked Questions

What does ST do in Amadeus?

ST requests seats in advance for passengers and flight segments, either by preference or by specific seat number.

What does ST/P1 mean?

It requests a seat for passenger 1 on all segments in the PNR.

How do I request a specific seat number?

Use ST/2A to request seat 2A for all segments, or ST/2A/S2 to request it only for segment 2.

How is ST different from STG?

STG requests seats for group PNRs. ST requests seats for individual passengers and segments.

How do I cancel a seat request?

Use SX to cancel all seat requests, or SX/S2,3 to cancel only specific segments.

Conclusion

The ST command is the advance seat request tool in Amadeus. Use ST for a non-smoking seat on all segments, ST/WI for specific seat options, ST/P1 for a particular passenger, ST/S/S3 or ST/A/S4/P2 for specific segments, and ST/2A, ST/2A/S2, or ST/4K/6K to request specific seat numbers. It gives passengers the seating they want, reduces check-in stress, and adds real value to the service you provide. Always display the seat map with SM before selecting seats, use STG for group bookings, and clear or change requests with SX when the itinerary changes. Together, these commands complete the Amadeus seat management toolkit and ensure every passenger is seated exactly where they want to be.