[12] On 8 December 2016, he scored his first goal for the 2016–17 season, in a crucial 2–0 home UEFA Europa League win against Slovan Liberec ensuring club's progress to the next round.

[24] On 4 October 2018, he scored after an assist from Léo Jabá in a 4–1 away emphatic win against BATE Borisov in Belarus for UEFA Europa League Group stage.

[26] On 14 April 2019, PAOK's winger was in the right place and the right time to pick up possession from a poor Nikola Jakimovski clearance, and he returned the ball with interest into the top left corner of Ögmundur Kristinsson's net, opening the score in a 1–1 away draw game against AEL.

[27] At the beginning of 2019–20 season, Pelkas is one of PAOK's most experienced players within the squad, having made a total of 176 appearances for the Greek champions, which includes scoring 36 goals and providing 29 assists.

The Greek international began the season as a consistent starter in newly appointed Portuguese manager Abel Ferreira's starting eleven.

[28] On 4 March 2020, he scored a brace helping PAOK complete an incredible Greek Cup comeback by coming from 2–0 down to beat Olympiacos 3–2 in the first leg semi-final home game.

Pelkas is the sixth Super League player to receive a commemorative card this season, joining the likes of Mathieu Valbuena, Youssef El Arabi (twice), Marko Livaja, Petros Mantalos, and Pape Abou Cissé.

[31] On 22 September 2020, Pelkas scored by flicking Andrija Živković's ball past Matvei Safonov to give PAOK the lead as he missed an early penalty kick in a 2–1 away 2020–21 UEFA Champions League play-offs 1st leg loss against Krasnodar.

[35] On 28 February 2021, Fenerbahce, thanks to a great long shot by Pelkas in the 76th minute, got the victory against Trabzonspor, in his club effort to win the championship.

According to an article in the Cumhuriyet newspaper, the international midfielder is ready to leave the Turkish club, due to the match plan that his coach, Vitor Pereira, wants to implement.

Fenerbahçe have already accepted proposals for his former football player PAOK, having received offers from Russia, Italy but also Hellas, but without naming the club that is interested in repatriating the international midfielder.

[47] On 24 January 2025, Dimitris Pelkas has made his way back to his cherished PAOK signing a two-and-a-haf year's contract, and is set for his second debut with the club.

[48] On 2 October 2015 Interim Greece coach Kostas Tsanas called up midfielder Dimitris Pelkas for the match against Northern Ireland and Hungary for UEFA Euro 2016.

On 9 October 2021, he scored his first goal with Greece national team with a right footed shot from the right side of the box to the bottom right corner, sealing a vital 2–0 away win against Georgia, in its effort to qualify to the final phase of 2022 World Cup.