| 3rd Qualifying Round | Play-offs | Group Stage | Knockout round | Round of 16 | Quarterfinals |
| Semifinals | Final |
Round:
Played
1st Round
09/16/2021 - Thursday
12:45
Bayer Leverkusen
2
x
1
Ferencváros
12:45
Betis
4
x
3
Celtic
2nd Round
09/30/2021 - Thursday
15:00
Celtic
0
x
4
Bayer Leverkusen
15:00
Ferencváros
1
x
3
Betis
3rd Round
10/19/2021 - Tuesday
10:30
Celtic
2
x
0
Ferencváros
10/21/2021 - Thursday
12:45
Betis
1
x
1
Bayer Leverkusen
4th Round
11/04/2021 - Thursday
16:00
Bayer Leverkusen
4
x
0
Betis
16:00
Ferencváros
2
x
3
Celtic
5th Round
11/25/2021 - Thursday
12:45
Bayer Leverkusen
3
x
2
Celtic
12:45
Betis
2
x
0
Ferencváros
6th Round
12/09/2021 - Thursday
15:00
Celtic
3
x
2
Betis
15:00
Ferencváros
1
x
0
Bayer Leverkusen