Increased prices would mean that it's then profitable to "stop" normal flights in other regions. Then divert all those planes to the disaster-area so that you c

Increased prices would mean that it's then profitable to "stop" normal flights in other regions. Then divert all those planes to the disaster-area so that you can "take advantage" of those horrible prices. E.g. By letting the price increase, you're also incentivizing private entities into aiding in the relief effort. The other moral argument for it is that this increase in "supply" at a higher price, also reduces the load on free/volunteer/government-provided relief and evacuation efforts. E.g. Rich/Wealthy/Middle-class people pay more so they don't have to worry about being evacuated and because they want to spend more money on mitigating risk. Those people then won't need to be transported out on the congested freeways and such.