Minimum age varies by location
The same brand can require 21 at one airport and 25 at another.
Minimum rental age is set by the branch and by local law. Clearing the minimum age is not the whole story: many branches add a young-driver surcharge or restrict which cars you can take.
Answers come from the published requirements for the exact branch, across 35 airports.
The same brand can require 21 at one airport and 25 at another.
Where they apply they are added at the counter and can be a large share of the total.
Under-25 renters are often limited to smaller categories.
If you are under 25 and paying by debit, both sets of requirements have to be met.