| Preliminary Round | 1st Qualifying Round | 2nd Qualifying Round | 3rd Qualifying Round | Playoff Round | Group Stage |
| 16th Finals | 8th Finals | Quarterfinals | Semifinals | Final |
Round:
Played
1st Round
09/20/2018 - Thursday
15:00
Celtic
1
x
0
Rosenborg
15:00
RB Leipzig
2
x
3
Red Bull Salzburg
2nd Round
10/04/2018 - Thursday
12:55
Red Bull Salzburg
3
x
1
Celtic
12:55
Rosenborg
1
x
3
RB Leipzig
3rd Round
10/25/2018 - Thursday
12:55
RB Leipzig
2
x
0
Celtic
12:55
Red Bull Salzburg
3
x
0
Rosenborg
4th Round
11/08/2018 - Thursday
15:00
Celtic
2
x
1
RB Leipzig
15:00
Rosenborg
2
x
5
Red Bull Salzburg
5th Round
11/29/2018 - Thursday
12:55
Red Bull Salzburg
1
x
0
RB Leipzig
12:55
Rosenborg
0
x
1
Celtic
6th Round
12/13/2018 - Thursday
15:00
Celtic
1
x
2
Red Bull Salzburg
15:00
RB Leipzig
1
x
1
Rosenborg