How to Complain About Denied Boarding or Overbooking
If you were denied boarding because a flight was overbooked, you're often entitled to substantial cash compensation — frequently more than for a simple delay. Don't accept a voucher on the spot without knowing what you're owed.
Quick answer
What this problem means
Overbooking is when an airline sells more seats than the aircraft has and then 'bumps' passengers. Involuntary denied boarding usually triggers fixed compensation that scales with how late your rebooked arrival is. Voluntary bumping (where you accept an offer) is negotiable — so know your involuntary rights before agreeing to anything.
What evidence to gather
What to ask for
- The involuntary denied-boarding compensation for your route and delay
- Rebooking on the next available flight at no extra cost
- Reimbursement of expenses caused by the bump
- Cash rather than a voucher, where you're entitled to it
Sample complaint wording
On [date], I held a confirmed reservation on flight [number] and was involuntarily denied boarding due to overbooking. I am entitled to denied-boarding compensation under [the applicable rule]. I am claiming [amount] plus [expenses], and request your written response within 21 days.
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When to escalate
If the airline refuses or under-pays, escalate to the aviation regulator (CTA, DOT, or the relevant European authority), file a chargeback for any improper charges, and use small claims court for amounts within its limit.