The Gunners flew out on Saturday, with Max Dowman and Marli Salmon on the jet.
Midfielder Dowman and centre-half Salmon join new additions Martin Zubimendi, Kepa Arrizabalaga and Christian Norgaard in the Gunners squad.
Noni Madueke, who signed for Arsenal from Chelsea on Thursday, has been given time off after taking part in the Blues' triumphant Club World Cup campaign.
Arsenal will play two games in Singapore - AC Milan on 23 July and Newcastle on 27 July - before flying to Hong Kong for a north London derby against Tottenham Hotspur on 31 July.
Arsenal Travelling squad
Goalkeepers: David Raya, Kepa Arrizabalaga, Tommy Setford, Alexei Rojas-Fedorushchenko.
Defenders: William Saliba, Ben White, Gabriel Magalhaes, Jurrien Timber, Jakub Kiwior, Oleksandr Zinchenko, Riccardo Calafiori, Myles Lewis-Skelly, Josh Nichols, Marli Salmon.
Midfielders: Martin Odegaard, Christian Norgaard, Mikel Merino, Sambi Lokonga, Martin Zubimendi, Declan Rice, Louie Copley.
Forwards: Bukayo Saka, Gabriel Martinelli, Leandro Trossard, Ethan Nwaneri, Reiss Nelson, Kai Havertz, Ismeal Kabia, Max Dowman, Andre Harriman-Annous.