| No. | Club | Total | Games | ||
| 1 | West Ham United FC | ENG | 263.359 | 43.893 | 6 |
| 2 | KKS Lech Poznań | POL | 183.350 | 30.558 | 6 |
| 3 | 1. FC Köln | GER | 141.700 | 47.233 | 3 |
| 4 | FC Basel | SUI | 134.873 | 19.268 | 7 |
| 5 | ACF Fiorentina | ITA | 131.903 | 18.843 | 7 |
| 6 | RSC Anderlecht | BEL | 92.060 | 15.343 | 6 |
| 7 | AZ Alkmaar | NED | 87.926 | 14.654 | 6 |
| 8 | OGC Nice | FRA | 83.110 | 16.622 | 5 |
| 9 | Djurgårdens IF | SWE | 75.336 | 18.834 | 4 |
| 10 | KAA Gent | BEL | 72.804 | 12.134 | 6 |
| 11 | K Slovan Bratislava | SVK | 68.918 | 17.230 | 4 |
| 12 | FCSB | ROM | 58.888 | 19.629 | 3 |
| 13 | SK Slavia Praha | CZE | 54.559 | 18.186 | 3 |
| 14 | FK Partizan Beograd | SRB | 50.424 | 12.606 | 4 |
| 15 | Heart of Midlothian FC | SCO | 48.237 | 16.079 | 3 |
| 16 | FC CFR 1907 Cluj | ROM | 45.922 | 11.481 | 4 |
| 17 | Villarreal CF | ESP | 42.474 | 10.619 | 4 |
| 18 | Hapoel Be'er Sheva FC | ISR | 37.581 | 12.527 | 3 |
| 19 | Sivasspor K | TUR | 33.722 | 8.431 | 4 |
| 20 | FK Austria Wien | AUT | 32.611 | 10.870 | 3 |
| 21 | KF Ballkani Therandë | KOS | 28.823 | 9.608 | 3 |
| 22 | İstanbul Başakşehir FK | TUR | 21.977 | 5.494 | 4 |
| 23 | 1. FC Slovácko | CZE | 21.812 | 7.271 | 3 |
| 24 | Silkeborg IF | DNK | 19.457 | 6.486 | 3 |
| 25 | FC Pyunik Yerevan | ARM | 18.771 | 6.257 | 3 |
| 26 | FK Rīgas Futbola skola | LVA | 18.648 | 6.216 | 3 |
| 27 | Shamrock Rovers FC | IRL | 18.393 | 6.131 | 3 |
| 28 | Molde FK | NOR | 13.372 | 4.457 | 3 |
| 29 | FD algiris Vilnius | LTU | 12.636 | 4.212 | 3 |
| 30 | SK Dnipro-1 | UKR | 11.444 | 2.861 | 4 |
| 31 | Apollon FC Lemesós | CYP | 7.881 | 2.627 | 3 |
| 32 | FC Vaduz | LIE | 4.268 | 1.423 | 3 |
| Entered from Europa League : | |||||
| SS Lazio | ITA | 31.274 | 15.637 | 2 | |
| Trabzonspor K | TUR | 26.184 | 26.184 | 1 | |
| Qarabağ Ağdam FK | AZE | 25.452 | 25.452 | 1 | |
| SC de Braga | PRT | 13.041 | 13.041 | 1 | |
| AÉK Lárnaka | CYP | 10.731 | 5.366 | 2 | |
| FK Bodø 1916 Glimt | NOR | 6.925 | 6.925 | 1 | |
| FC Sheriff Tiraspol | MDA | 5.326 | 2.663 | 2 | |
| PFC Ludogorets Razgrad | BGR | 4.417 | 4.417 | 1 | |
| Final : | |||||
| Fortuna Arena, Praha | CZE | 17.363 | 17.363 | 1 | |
| . | Total | 14.737 |