Agree with Stcroixboy - Flores is worth staying over night to explore. We added an extra night to the front end of one of our trips and caught the afternoon Tropic flight to Flores. Wandered the town (a quaint island in the middle of a lake) had dinner and then visited Tikal the next day. Lunch at the lodge at Tikal and then Tropic's flight to Goldson and then their last flight into San Pedro. We left our larger bags with Tropic at Goldson and only took backpacks to Guatemala. It was a great trip and the cost for overnight vs. a day trip wasn't that much.