diff --git a/CHANGELOG.md b/CHANGELOG.md
index 078cd181..a01dfe4d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,6 +11,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Added
 
 - `:RustLsp logFile` command, which opens the rust-analyzer log file.
+- `:RustLsp flyCheck`: Support `run`, `clear` and `cancel` subcommands.
 - Executors: Support commands without `cwd`.
 
 ### Fixed
diff --git a/README.md b/README.md
index 8f3c22fa..b1609d62 100644
--- a/README.md
+++ b/README.md
@@ -365,10 +365,13 @@ for more configuration options.
   can be costly.
   
   ```vimscript
-  :RustLsp flyCheck
+  :RustLsp flyCheck [run?|clear?|cancel?]
   ```
   ```lua
-  vim.cmd.RustLsp('flyCheck')
+  vim.cmd.RustLsp('flyCheck') -- defaults to 'run'
+  vim.cmd.RustLsp { 'flyCheck', 'run' }
+  vim.cmd.RustLsp { 'flyCheck', 'clear' }
+  vim.cmd.RustLsp { 'flyCheck', 'cancel' }
   ```
 </details>
 
diff --git a/doc/rustaceanvim.txt b/doc/rustaceanvim.txt
index eac137e6..e70af04d 100644
--- a/doc/rustaceanvim.txt
+++ b/doc/rustaceanvim.txt
@@ -35,11 +35,13 @@ It accepts the following subcommands:
  `ssr [query]` - Structural search and replace.
  `crateGraph [backend]` - Create and view a crate graph with graphviz.
  `syntaxTree` - View the syntax tree.
- `flyCheck` - Run `cargo check` or another compatible command (f.x. `clippy`)
+ `flyCheck` [run?|clear?|cancel?]
+            - Run `cargo check` or another compatible command (f.x. `clippy`)
               in a background thread and provide LSP diagnostics based on
               the output of the command.
               Useful in large projects where running `cargo check` on each save
               can be costly.
+              Defaults to `flyCheck run` if called without an argument.
  `logFile` - Open the rust-analyzer log file.
 
 ==============================================================================
diff --git a/lua/rustaceanvim/commands/fly_check.lua b/lua/rustaceanvim/commands/fly_check.lua
index 8579d04e..82e77c07 100644
--- a/lua/rustaceanvim/commands/fly_check.lua
+++ b/lua/rustaceanvim/commands/fly_check.lua
@@ -1,9 +1,13 @@
 local M = {}
 
 local rl = require('rustaceanvim.rust_analyzer')
-function M.fly_check()
-  local params = vim.lsp.util.make_text_document_params()
-  rl.notify('rust-analyzer/runFlyCheck', params)
+
+---@alias flyCheckCommand 'run' | 'clear' | 'cancel'
+
+---@param cmd flyCheckCommand
+function M.fly_check(cmd)
+  local params = cmd == 'run' and vim.lsp.util.make_text_document_params() or {}
+  rl.notify('rust-analyzer/' .. cmd .. 'FlyCheck', params)
 end
 
 return M.fly_check
diff --git a/lua/rustaceanvim/commands/init.lua b/lua/rustaceanvim/commands/init.lua
index 0550f155..08734c86 100644
--- a/lua/rustaceanvim/commands/init.lua
+++ b/lua/rustaceanvim/commands/init.lua
@@ -98,8 +98,9 @@ local command_tbl = {
   syntaxTree = function()
     require('rustaceanvim.commands.syntax_tree')()
   end,
-  flyCheck = function()
-    require('rustaceanvim.commands.fly_check')()
+  flyCheck = function(args)
+    local cmd = args[1] or 'run'
+    require('rustaceanvim.commands.fly_check')(cmd)
   end,
   logFile = function()
     vim.cmd.e(config.server.logfile)
@@ -129,19 +130,26 @@ function M.create_rust_lsp_command()
     complete = function(arg_lead, cmdline, _)
       local commands = vim.tbl_keys(command_tbl)
       local match_start = '^' .. rust_lsp_cmd_name
+      local subcmd_match = '%s+%w*$'
       -- special case: crateGraph comes with graphviz backend completions
-      if cmdline:match(match_start .. ' debuggables%s+%w*$') or cmdline:match(match_start .. ' runnables%s+%w*$') then
+      if
+        cmdline:match(match_start .. ' debuggables' .. subcmd_match)
+        or cmdline:match(match_start .. ' runnables%s+%w*$')
+      then
         return { 'last' }
       end
-      if cmdline:match(match_start .. ' hover%s+%w*$') then
+      if cmdline:match(match_start .. ' hover' .. subcmd_match) then
         return { 'actions', 'range' }
       end
-      if cmdline:match(match_start .. ' moveItem%s+%w*$') then
+      if cmdline:match(match_start .. ' moveItem' .. subcmd_match) then
         return { 'up', 'down' }
       end
-      if cmdline:match(match_start .. ' crateGraph%s+%w*$') then
+      if cmdline:match(match_start .. ' crateGraph' .. subcmd_match) then
         return config.tools.crate_graph.enabled_graphviz_backends or {}
       end
+      if cmdline:match(match_start .. ' flyCheck' .. subcmd_match) then
+        return { 'run', 'clear', 'cancel' }
+      end
       if cmdline:match(match_start .. '%s+%w*$') then
         return vim.tbl_filter(function(command)
           return command:find(arg_lead) ~= nil
diff --git a/lua/rustaceanvim/init.lua b/lua/rustaceanvim/init.lua
index b33b844a..f1ab1d79 100644
--- a/lua/rustaceanvim/init.lua
+++ b/lua/rustaceanvim/init.lua
@@ -29,11 +29,13 @@
 --- `ssr [query]` - Structural search and replace.
 --- `crateGraph [backend]` - Create and view a crate graph with graphviz.
 --- `syntaxTree` - View the syntax tree.
---- `flyCheck` - Run `cargo check` or another compatible command (f.x. `clippy`)
+--- `flyCheck` [run?|clear?|cancel?]
+---            - Run `cargo check` or another compatible command (f.x. `clippy`)
 ---              in a background thread and provide LSP diagnostics based on
 ---              the output of the command.
 ---              Useful in large projects where running `cargo check` on each save
 ---              can be costly.
+---              Defaults to `flyCheck run` if called without an argument.
 --- `logFile` - Open the rust-analyzer log file.
 ---@brief ]]