When Lumpy wakes up in the hotel room his head is bleeding. The wound switches from left to right.
Neil says that his ticket is for seat D, but Scott is sitting in seat D.
The newlyweds board a plane that is flying from Phoenix to Minneapolis -St. Paul International. The plane appears to be 2x2 seating. Flying nonstop on a Red-eye from PHX-MSP, they would likely only have a handful of options. American, Delta, or possibly Southwest, Frontier, or Sun Country. 2x2 seating would indicate a regional aircraft, which would likely not operate this long of a route (4+ hours, 1700 miles). The remaining carriers do not fly mainline aircraft with 2x2 seating on this route. The smallest possible aircraft (in 2013) that would operate this route would be a Delta operated Boeing 717-200, which features 3x2 seating.
When Scott and Kristin come out of the coroner's in Phoenix, you can see a reflection of the boom mic in the door.
Pilot says that the Red Eye Flight will be full, but there are numerous seats.