Southwest MCP Server

MCP server for Southwest Airlines - search flights, manage bookings

Local serverstdio

What is the Southwest MCP server?

MCP server for Southwest Airlines - search flights, manage bookings. That is what the southwest mcp server brings to an AI assistant: the same capability, reachable through the Model Context Protocol rather than a separate app or dashboard.

The short version

MCP server for Southwest Airlines — search flights, manage bookings, check in, and manage your Rapid Rewards account via browser automation.

  • Search flights — with real-time pricing across all fare classes
  • Compare fares — Wanna Get Away, Wanna Get Away+, Anytime, Business Select
  • Book flights — with dollars or Rapid Rewards points
  • Manage reservations — change, cancel, get details
  • No change fees — — Southwest never charges them
  • Check in — online (opens exactly 24 hours before departure)

The tools it exposes

The server publishes 13 tools. What each one is for:

  • search_flights — The search_flights tool exposed by this server
  • get_flight_details — The get_flight_details tool exposed by this server
  • select_flight — Select a flight from search results to proceed with booking
  • get_fares — The get_fares tool exposed by this server
  • add_early_bird — Add Early Bird Check-In to an existing booking (~$15–25/person/flight)
  • checkout — The checkout tool exposed by this server
  • get_reservation — The get_reservation tool exposed by this server
  • change_flight — The change_flight tool exposed by this server
  • cancel_flight — Cancel a reservation. Use confirm: true to actually cancel
  • check_in — The check_in tool exposed by this server
  • get_boarding_pass — The get_boarding_pass tool exposed by this server
  • get_rapid_rewards — Check Rapid Rewards points, tier status, and Companion Pass progress

What it needs from you

Configuration is passed through the environment: SW_USERNAME, SW_PASSWORD. Treat anything key-shaped as a real credential — scope it to the minimum the server needs, and rotate it if it ever lands in a shared config.

Getting it running

The server ships on npm as playwright, so your MCP client can launch it on demand — there is no separate build step. Add the server block to your client's configuration, restart it, and the tools register themselves.

How it compares

Among the payments and commerce options, the useful question is rarely "what can it do" but "what does it cost you to run" — permissions, credentials, and how much of your context its toolset consumes. Southwest's toolset — search_flights, get_flight_details, select_flight and 10 more — is a fair guide to whether it matches your workflow. It is maintained by markswendsen-code; worth a glance at recent repository activity before you build anything load-bearing on it.

This entry was verified against Southwest's own documentation before publication; SyncDev keeps the directory reviewed rather than auto-generated.

Things to watch

  • It runs with your machine's permissions. That is convenient and also the reason to think about what you point it at before you approve a tool call.
  • With 13 tools registered it takes up a noticeable share of the context window; turn it off in projects that never touch Southwest.
  • Keep per-call confirmation enabled while you learn its behaviour; it is the cheapest safeguard you have.

Available tools

ToolWhat it does
search_flightsThe search_flights tool exposed by this server.
get_flight_detailsThe get_flight_details tool exposed by this server.
select_flightSelect a flight from search results to proceed with booking.
get_faresThe get_fares tool exposed by this server.
add_early_birdAdd Early Bird Check-In to an existing booking (~$15–25/person/flight).
checkoutThe checkout tool exposed by this server.
get_reservationThe get_reservation tool exposed by this server.
change_flightThe change_flight tool exposed by this server.
cancel_flightCancel a reservation. Use confirm: true to actually cancel.
check_inThe check_in tool exposed by this server.
get_boarding_passThe get_boarding_pass tool exposed by this server.
get_rapid_rewardsCheck Rapid Rewards points, tier status, and Companion Pass progress.
book_with_pointsThe book_with_points tool exposed by this server.

How to install the Southwest MCP server

Or if installed globally:

```json
{
  "mcpServers": {
    "southwest": {
      "command": "mcp-southwest",
      "env": {
        "SW_USERNAME": "your_rapid_rewards_number",
        "SW_PASSWORD": "your_password"
      }
    }
  }
}

Configuration as documented by the project. Restart the client after saving.

Configuration

VariableDescriptionRequired
SW_USERNAMEConfiguration value read at startup.Optional
SW_PASSWORDConfiguration value read at startup.Optional

Example prompts to try

  • Use Southwest to search flights.
  • Use Southwest to get flight details.
  • Use Southwest to select flight.

Frequently asked questions

It connects Southwest to MCP-compatible AI assistants such as Claude and Cursor, exposing 13 tools (search_flights, get_flight_details, select_flight, and more) that the assistant can call on your behalf. Instead of copying data back and forth by hand, the assistant works with Southwest directly.