The Oceanic Six were rescued 108 days after they crashed. 108 is the sum of Hurley's mystery numbers 4, 8, 15, 16, 23, and 42 and the total of minutes required to push the button in the first hatch.
The co-pilot who is flying the Oceanic 6 to Honolulu is holding a key ring that is seen later on this episode, when Hugo gets a car from his father.
When Hugo goes to start the rebuilt Camaro at his birthday party, the odometer reads "481516" and the trip meter reads "2342". In these sequences, there are Hugo's lottery numbers (4,8,15,16,23,42) and the Oceanic flight number (815).