Preheat the oven to 375 degrees. Coat a baking sheet with olive oil cooking spray.
Combine the chicken, onion, cilantro, cream cheese, Monterey Jack, coriander, oregano, sea salt, and freshly cracked pepper to taste. Mix until well combined.
Wrap flour tortillas in a towel and microwave for 30-60 seconds, or until soft & pliable.
Place a bit of chicken mixture down the center of the tortilla, and roll.
Place, seam side down, on the prepared baking sheet. Finish rolling the remaining flautas, then spray each of them with olive oil cooking spray.
Place the baking sheet in the oven and bake for 8-10 minutes.
Flip them over and cook for an additional 8 minutes, or until crispy and golden brown.