In his homeland, Saengkham beat the likes of reigning world champion Stuart Bingham and ranking event winners Michael White and Joe Perry to play in the semi-finals of the 2015 Six-red World Championship, where he lost 7–3 to compatriot Thepchaiya Un-Nooh. A 6–2 win over Stephen Maguire saw him qualify for the International Championship for the second year in a row, but he was knocked out 6–4 by Oliver Lines in the opening round.&lt;ref name="2015/16"&gt;&lt;/ref&gt; He lost 6–5 and 4–3 in the first rounds of both the UK Championship and Welsh Open to Xiao Guodong and Fergal O'Brien respectively. Saengkham won a deciding frame against Lines to qualify for the China Open. He shocked Neil Robertson 5–3 in the first round and then beat Ben Woollaston 5–4 and Graeme Dott 5–1 to make the quarter-finals of a ranking event for the first time. A bad start from Saengkham saw him lose the opening four frames to John Higgins, but he then pulled it back to 4–3. Saengkham missed a yellow in the next frame and would be defeated 5–3. His final match of the season was a 10–8 loss to Dott in the second round of World Championship qualifying.