The standard Screen Flow Data Table has no export. Three ways to give users a CSV or Excel download.

The standard Data Table screen component in Salesforce Flow has no export option. To let users download what they see as a CSV or Excel file, you have three options: generate a CSV file with the free UnofficialSF action, build your own Lightning Web Component, or use a data table component that ships with an export button. This post walks through all three, with what each one costs you.
The Data Table screen component displays records and lets users select them. Since Spring '26 it also sorts columns and edits a handful of field types inline. Export is not part of it: there is no button, no property and no output that turns the table into a file. Users who need the data in a spreadsheet end up asking for a report, or copying rows by hand.
UnofficialSF publishes a free invocable action that turns a record collection into a CSV file.
It is a good fit when you need a CSV attached to a record, and you are comfortable adding a few elements to your flow.
A developer can write an LWC that receives the records from the flow, shows them in a table and builds the file in the browser. You get exactly the behaviour you want. You also own the code: tests, deployment, and every fix when a new requirement comes in (Excel on top of CSV, accented characters, larger volumes).
The Avonni Data Table for Screen Flows has a built-in Export To action. You add a button to the table header, point it at Export To, and users download the table as CSV or Excel in one click.

What users get: a small dialog where they confirm the file name, the format and the export view. Formatted Report keeps values as they appear in the table, Details Only exports the raw values.
Yes. With the Avonni Data Table, selected rows are exported on their own. With the UnofficialSF action, pass the selected rows as the record collection.
The Avonni Data Table exports up to 50,000 records when Export All Data is on. The UnofficialSF action runs within standard Apex governor limits.
Yes. Turn on Hide Export Dialog on the Export To action, and the file downloads immediately with the format, file name and encoding you set.
Pick the encoding that matches how your users open the file. The Export To action offers UTF-8, UTF-16, ISO-8859-1 and Japanese, Chinese and Korean encodings.
The Avonni Data Table is part of the Avonni Flow Screen Components. Install it from the AppExchange and add an export button to your next Screen Flow. For the full list of Flow screen components, native and third party, see our Salesforce Flow Screen Components guide. For inline editing in the same table, read Salesforce Flow Data Table inline editing.
Start free with 10 production licenses. All 3 Avonni packages included.