Airport and private lots often use dynamic pricing, rewarding travelers who commit early with lower rates and guaranteed spots. That means the earlier you click, the more you are likely to save, especially around peak travel times and holidays when drive-up demand pushes prices higher.

A Rossen Reports spot check found that prepaying online for airport parking can shave up to 35% off the bill.

Parking at New York’s John F. Kennedy International Airport for a five-day trip is priced at $80 per day for travelers who drive in. But those who prebook online for the same dates and parking lot can save about 28%, spending about $58 per day. At Los Angeles International Airport, the drive-up rate was $100, but reserving online knocked the price down by 21%. Dallas Fort Worth International Airpor

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