Dundalk advanced to the second qualifying round of the Europa League 5-1 on aggregate thanks to a 3-1 second-leg win over Jeunesse Esch at Oriel Park.
First-half goals from Brian Gartland, Kurtis Byrne and John Mountney meant Jonathan Zydko’s strike after the restart was little more than a consolation.
The Lilywhites will face Hajduk Split in Oriel Park in a week's time in the first leg of the second qualifying round.
It took Stephen Kenny's side just nine minutes to make the breakthrough. Ruaidhri Higgins floated in a free-kick from the left and Gartland rose to head home his sixth goal of the season.
Jeunesse almost got an equaliser straight from the kick-off. Ken Corral burst into the Dundalk box, leaving Peter Cherrie for dead, but Dane Massey was on hand to make a goal-saving interception.
Dundalk remained in cruise control for the remainder of the half but they still had enough quality to add two further goals before the break.
Byrne made it 2-0 on aggregate when he forced home a David McMillan cut-back in the 36th minute and Mountney found himself in oceans of space to pick his spot from the right of the penalty area in first-half stoppage-time.
Jeunesse upped their game in the second half and Zydco found the bottom corner of Cherrie's net in the 55th minute.
Dundalk, with one eye undoubtedly on this Sunday's domestic tussle with Shamrock Rovers in Tallaght, failed to ignite in the second half, and the visitors almost made it 3-2 on the night when first, Bryan Melisse fired just wide, before Kim Kintzinger saw a deft header hit the crossbar.
Dundalk: Cherrie; Gannon, Gartland (Kelly 79), Boyle, Massey; Towell, Higgins; Mountney, Byrne (Hoban 61), Horgan (Griffin HT); McMillan.
Jeunesse Esch: Oberveis; De Graca, Portier, Hoffman, Vitali; Kintzinger, Todorovic (Delgado HT), Zydco (Agovic 78); Corral (Albanese HT), Ibrahimovic, Melisse.
Referee: Tsvetan Krastev (Bulgaria).