That means Flanagan is not quite in the picture for a regular spot in the squad just yet - but a promising England debut could change that.
With Hodgson's side set to play two warm-up friendlies before the main tournament, the Reds defender could get his chance to earn his first caps for the national side - a prospect that fills him with delight.
"Coming away with your country, it doesn't get much better than that," he said. "There are top players from all around the country, so training with them is really good.
"There are another two games before we go home so if I get the chance to make my debut it will be a dream come true.
"As we've seen, young players are getting their chance and those who have come in have taken it with both hands. If I get a chance then hopefully I can take it."
But could Flanagan's dream become a team-mate's nightmare?
Indeed, the 21-year-old's rise could be a cause for concern for Liverpool and England right-back Glen Johnson. The 29-year-old is already likely to face competition from the youngster for his place at club level - and any potential breakthrough at international level could have him even more worried.
Should Flanagan impress, he would likely be considered at his natural right-back position, especially with Leighton Baines and Luke Shaw already selected down the left, where Flanagan played for Liverpool this season.
Even if Johnson's place during this World Cup is secure, then, his Liverpool team-mate will be firmly knocking on the door in future.
And with news that James Milner will be tried out at right-back against Ecuador, Johnson's confidence in his starting place may be shakier than ever.
One man's dream could thus be the beginning of a nightmare for another. With Flanagan eight years Johnson's junior, he could be challenging him for the right-back position for many years to come.