If you're going to be gone longer than that, wouldn't you find somewhere else to store the car and just Uber to the airport?

Lots of storage places have 1-car garages and most will do pay-as-you-go (monthly) on a credit card. Whatever your city's cost per square foot of storage space is, I bet this is cheaper than 30 days in a long-term airport lot. Plus your car is inside and secure, not outside getting door-dinged by months of inconsiderate dbags parking next to you.