Directory / plugin
One Search Result
v1.1.0 · by Brad Parbs
Automatically send a user to the page or post if it's the only search result available.
About this plugin
When there is only one search result available for a query, automatically redirect the user to that result.
This will work with any theme and any posts, pages, or custom post types that would be shown in search results.
Available Filters
You can filter one_search_result_pre_check to false if you need to short-circuit and disable the redirect dynamically.
You can modify the redirect code with once_search_result_redirect_code, defaults to 302.