The Low Fare Search Request message requests priced itinerary options for flights between specific city pairs on specific dates for specific numbers and types of passengers. Optional request information can include:
- Time / Time Window
- Connecting cities.
- Client Preferences (airlines, cabin, flight types etc.)
The Low Fare Search request contains similar information to a Low Fare Search entry on an airline CRS or GDS.

If true, booking class availability should be returned in the response for each of the flight segments.

Request direct flights on between the given locations.This defaults to false.

A unique identifier to relate all messages within a transaction (e.g. this would be sent in all request and response messages that are part of an on-going transaction).

Specify airline to request availability for.

Fare Type is specific to a specific fare and this is a request for a set of fares based on these qualifiers. Refer to OTA Code List 'Fare Qualifier' (FAQ).

Used to indicate whether the request is for the Test or Production system.

Specifies to whom the request should be targeted for the information that is to be returned.

For all OTA versioned messages, the version of the message is indicated by a decimal value.

Identifies pricing source, if negotiated fares are requested and if it is a reprice request.

If true, reduced data should be returned

Identifies the type of cabin (i.e., first, business, economy) requested.

Identifies the alternate language for a customer or message. The human language is identified by ISO 639 codes.

Type of funds preferred for reviewing monetary values, in ISO 4217 codes.

Identifies the context of the identifying code, such as DUNS, IATA or internal code, etc.

The department name or ID with which the contact is associated.

If true, only base fare information should be returned

A collection of information that specifies how the message processing should occur or how the data should be returned.

Specific flight number to request availability for. Requires that Airline is also supplied.

Specifies (at a high level) the type of search criteria for
this request.

The division name or ID with which the contact is associated.

The ISO country code where the ticket will be issued.

To specify the country code where ticketing of the reservation will take place.

Include only flights with available booking codes (when True or when attribute not present).

Specifies the order in which the information should be returned.

A positive integer value that indicates the maximum number of responses desired in the return.

If true, this request is for a specific PTC and only fares applicable to that PTC will be checked and returned.

Used to provide the company common name.

Refer to OTA Code List Travel Sector (TVS).

This indicates where this message falls within a sequence of messages.

Indicates the creation date and time of the message in UTC using the following format specified by ISO 8601; YYYY-MM-DDThh:mm:ssZ with time values using the 24 hour clock (e.g. 20 November 2003, 1:59:38 pm UTC becomes 2003-11-20T13:59:38Z).

Indicator to identify whether or not the price is applicable only to private fares.

When true, indicates the message is being re-sent after a failure. It is recommended that this attribute is used (i.e., set to TRUE) only when a message is retransmitted.

Identifies a company by the company code.

If true, flight service information should be returned in the response.

If true repricing is requested.

Specify the number of passengers and types for Air Low Fare Search

Used to identify the sequence number of the transaction as assigned by the sending system; allows for an application to process messages in a certain order or to request a resynchronization of messages in the event that a system has been off-line and needs to retrieve messages that were missed.

A reference for additional message identification, assigned by the requesting host system. When a request message includes an echo token the corresponding response message MUST include an echo token with an identical value.

It can be used to indicate whether the fare is public or private.

Identifes the primary language preference for the message. The human language is identified by ISO 639 codes.

Specify actual airline, flight number, or booking class to qualify the low fare search