1) Do not volunteer to give up your seat in exchange for vouchers or perks.
2) Hold onto your boarding pass and any other travel documents.
3) Ask why you’re being denied boarding.
4) Request an alternate flight to your destination.
5) Request compensation for your boarding denial.
6) Ask the airline to cover your meals and refreshments.
7) Get the airline to provide you with a hotel room.
8) Keep your receipts if your boarding denial ends up costing you extra money.
9) See if your boarding denial is eligible for compensation.