UV light does not just create repairable dimers in DNA bases, it can and does rip DNA apart. Enough exposure would cause more than enough irreparable damage to kill the cell and 99% of the cell being destroyed is certainly not salvageable.
The Delta flight is cheaper. But check a bag at a cost of $25 for the first checked bag each way on Delta, and your total fare climbs to $256 -- more than the cost of the Southwest flight, which includes free first and second checked bags. Add a second checked bag for $35 each way on the Delta flight, and you'll pay a whopping $326.
Free Checked Bags on Allegiant. I have flown Allegiant many times, if the flight is looking very full and a lot of the passengers have purchased the pre-boarding the ticket counter will offer a free checked bag to those passengers that have purchased the pre-boarding option.n my flight at least, Allegiant did not preemptively gate check bags that would obviously not fit in the overhead. They let everybody board and only then took those bags off the plane. Unlike most regional jets, those bags were not unloaded plane side, they went to baggage claim.