This term, the Blues have been heavily backed with notable sell-out trips to Wycombe, Ipswich and Sheffield Wednesday.
Meanwhile, 1,057 die-hard supporters made the longest trip of the season to date for their visit to Morecambe in November.
But how does Pompey’s following away from home compare to their League One rivals?
The Away Fans have put together the average followings for each side in the third tier, along with the total figures as well as each side’s average miles travelled across the whole campaign.
Here’s where the Blues rank on that list.
9. Wycombe
Average away following: 580; Total travellers: 7,543; Club average miles travelled (full season): 132. Photo: Alex Davidson
10. Exeter
Average away following: 713; Total travellers: 9,274; Club average miles travelled (full season): 202. Photo: Gary M. Prior
11. Lincoln
Average away following: 779; Total travellers: 8,574; Club average miles travelled (full season): 133. Photo: George Wood
12. NEWCASTLE UPON TYNE, ENGLAND - JANUARY 08: Cambridge United fans greet their team onto the pitch from the upper tier during the Emirates FA Cup Third Round match between Newcastle United and Cambridge United at St James' Park on January 08, 2022 in Newcastle upon Tyne, England. (Photo by Stu Forster/Getty Images)
Average away following: 784; Total travellers: 9,411; Club average miles travelled (full season): 145. Photo: Stu Forster