Ilagan won the Philippines Qualifying Event for the 2013 World Championship and once there came back from three to one down in legs to Jamie Lewis in the preliminary round to win 4–3. He faced Colin Osborne in the first round and despite impressing with some clinical finishes, he lost 3–0. He was due to play with Perez once more in the 2013 World Cup of Darts but they were forced to withdraw due to travel problems. Later in the year he won the Hong Kong Open by beating Edward Santos in the final.