Airline Travel Legs {#airline-intro-legs}
=========================================

Some processors require travel legs in the API service request, even for direct flights. This section describes how to successfully include travel legs in an API request.

Using Travel Legs
-----------------

To include travel legs in an airline transaction, include one or more travel legs in the legs\[\] array.  
For example, these three travel legs are valid:

```
"travelInformation": {
    "transit": {
      "airline": {
        "legs": [
          {
            "carrierCode": "XX"
          },
          {
            "carrierCode": "XZ"
          },
          {
            "carrierCode": "XX"
          }
        ]
      }
```

Travel Leg Limitations
----------------------

Some processors limit the number of travel legs for each trip based on the card type.