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Amadeus FXB Command: Lowest Fare & Rebooking

A complete guide to the FXB command in Amadeus โ€” how to price the itinerary with the lowest possible fare, rebook automatically when required, and store the TST.

Sometimes the itinerary is booked in a class that is not the cheapest option for the passenger. The fare may be higher than necessary simply because the original booking class was not the most economical one. The FXB command solves this automatically. It searches for the lowest available fare for the itinerary, and if that fare requires a different booking class, it rebooks the itinerary on its own. The resulting pricing is then stored in a TST, ready for review and ticketing. This guide explains what FXB does, its syntax, and when it should be used.

What Does the FXB Command Do?

FXB is the Amadeus GDS command used to price the itinerary with the lowest possible fare, rebook the itinerary when required, and store the TST.

Category: Informative Pricing.

The FXB command searches for the lowest available fare for the itinerary. If a lower fare requires a different booking class, the itinerary is rebooked automatically, and the resulting pricing is stored in a TST.

This combination of features makes FXB unique. It is not just a pricing command โ€” it optimises the booking itself, moving the passenger to the cheapest available class before storing the fare. This saves the customer money and saves the agent the manual work of rebooking and repricing.

Syntax & Examples

Price the complete itinerary at the lowest possible fare, rebook if necessary, and store the TST:

FXB

Price a specific segment at the lowest possible fare:

FXB/S3

This prices segment 3 at the lowest possible fare, without affecting the rest of the itinerary.

Price a specific passenger at the lowest possible fare:

FXB/P2

This prices passenger 2 at the lowest possible fare, which is useful when one traveller in a group requires a cheaper fare option.

When to Use FXB

Use FXB when you want Amadeus to find the lowest possible fare and automatically rebook the itinerary if a lower booking class is available, while also storing the pricing in a TST. Typical scenarios include:

  • Saving the customer money when the itinerary is booked in a higher class than necessary.
  • Optimising the fare before ticketing without manually rebooking segments.
  • Comparing the current fare against the lowest available option automatically.
  • Reducing fares on corporate bookings where cost control matters.
  • Handling last-minute price reductions before issuance.
  • Simplifying the workflow when the itinerary may need class changes to get the lowest price.

How FXB Fits Into Your Pricing Workflow

A typical pricing session using FXB might look like this:

  • Retrieve the PNR and confirm the itinerary is complete.
  • Enter FXB to find the lowest possible fare, rebook if needed, and store the TST.
  • Use FXB/S3 or FXB/P2 when only part of the itinerary or one passenger needs optimisation.
  • Review the result โ€” the PNR may now show new booking classes.
  • Confirm the stored TST with TQT.
  • If the pricing is acceptable, proceed with ticketing using TTP.

How FXB Relates to Other Pricing Commands

  • FXB โ†’ lowest-fare pricing with automatic rebooking and TST storage.
  • FXP โ†’ standard pricing of the itinerary with TST storage, no automatic rebooking.
  • FXX โ†’ prices the itinerary without storing a TST.
  • FXR โ†’ reprices an existing itinerary.
  • FXA โ†’ lists lower applicable fares for the itinerary without rebooking.
  • FXL โ†’ displays the lowest possible fare regardless of availability.
  • FXE / FXF โ†’ informative pricing for the ATC reissue process.
  • FXO / FXQ โ†’ confirmed pricing with TST creation for ATC reissue.

The key distinction: FXA shows lower fares but does nothing, FXB rebooks automatically and stores the TST, and FXP simply prices the current itinerary as booked.

Important: FXB rebooks the itinerary when a lower booking class is available. This means the booking class on one or more segments may change. Verify with the customer that any rebooking is acceptable, especially if seats or services were already selected in the original class.

After FXB has run, review the PNR to confirm the new booking classes, and check the stored TST with TQT before ticketing.

Frequently Asked Questions

What does FXB do in Amadeus?

FXB prices the itinerary at the lowest possible fare, rebooks it automatically if a lower booking class is available, and stores the pricing in a TST.

Does FXB change the booking class?

Yes, if a lower fare requires a different booking class, FXB rebooks the itinerary to that class automatically.

How is FXB different from FXP?

FXP prices the itinerary as booked and stores the TST. FXB searches for the lowest fare, rebooks if needed, and then stores the TST.

Can I use FXB on a specific segment or passenger?

Yes. Use FXB/S3 for a specific segment or FXB/P2 for a specific passenger.

Conclusion

The FXB command is the automated lowest-fare pricing tool in Amadeus. Use FXB to search for the cheapest available fare, rebook the itinerary automatically if a lower booking class is found, and store the resulting TST, or use FXB/S3 and FXB/P2 to limit the optimisation to a segment or passenger. Because FXB may change booking classes, always review the PNR after the command has run and confirm the change is acceptable to the customer. When the pricing is correct, proceed with ticketing using TTP. Paired with FXP, FXX, FXR, and TQT, the FXB command completes your pricing toolkit and helps you offer the most competitive fare without manual rebooking.