The 27-year-old has struggled to secure a regular place in Arsene Wenger's team since joining the Gunners from Malaga on transfer deadline day.
But when asked if he thinks he has more chance of playing for Spain since his move to north London, Monreal told Marca: "I think so yes. I was at Malaga for 18 months and I grew a lot as a player.
"The move to the Premier League is a jump in quality and a jump forward. I
think being part of a team like Arsenal helps."
Monreal has started two of Spain's last three matches and is hoping to get another chance to impress coach Vicente del Bosque in the upcoming friendlies against Equatorial Guinea and South Africa.
He added: "I'd like that. I'm aware that it's not going to be easy, also partly because I'm not getting as many minutes as I would like with Arsenal.
"I'm going to continue fighting and working hard because I really want to be at the World Cup."