Airline Consumer Protection Act of 2017 This bill directs the Department of Transportation (DOT) to issue a final rule to require an air carrier to: seek, for a delay exceeding three hours, a cancellation, or a misconnection as a result of circumstances within the air carrier's control, alternative transportation for a displaced passenger; and accept, for a reasonable fee, a displaced passenger from another air carrier or a passenger involuntarily denied boarding due to a lack of available seats. The Government Accountability Office shall submit a report that reviews airline computer network functions. Any air carrier schedule change resulting from a computer network disruption, security breach, or other inoperability may be considered an event within a carrier's control. DOT shall: publish a final rule to require an air carrier to submit to the Federal Aviation Administration a plan for restoring full functionality of its computer network systems in the event of a service disruption; establish an airline industry computer network resiliency working group; modify federal regulations to require each air carrier to adopt a contingency plan for any delay, cancellation, or misconnection affecting a passenger; and issue regulations to ensure that a ticketed passenger shall not pay a fee to select an alternative flight if the aircraft's lavatory is not functioning.