The Series 1 DVD includes official English and Spanish subtitles. Note that some releases may be region-locked (Region 2/PAL).
If you already have the video files, you can search for standalone subtitle files (typically .srt format) on dedicated community databases: Come Fly with Me(2010)9 DostД™pne napisy
In some regions, the show is available for purchase on Apple TV with original English audio and potentially closed captions. Subtitle Download Sites The Series 1 DVD includes official English and