I need to rent a car for a month but not sure how to get there without paying for a taxi?

I thought "Enterprise " was supposed to deliver the car to you??

Cheapo take the bus and it may cost you less than two dollars.

Why do you have to rent a car when you have one?  If your car is broke, just get it fixed.

It does not make sense to leave your car somewhere for a month.

Call the place closer and see if they will do a price match with delivery/pick up or pay for an uber.

If not, call the farther place and see if they will pay for a 2-way uber.

Take a bus.  Check with the airport management to see if there is a shuttle service available.

I'm surprised that the airport would be cheaper than a local rental location. I've found that airport based car rentals often include lots of extra fees which makes the airport rental the more expensive option.

Start by searching for airport shuttles. Most commercial airports have shuttle buses available from all the surrounding areas. You might be able to get there for $20 or less if you're willing to go at the time that the shuttle leaves.

Also consider posting in local social groups like nextdoor or local groups on FB. Offer $20 in gas money to anyone who happens to be going that direction and is willing to let you ride along.

If that doesn't work see if you can get a one-way rental from that local place. Their rates might be higher but it could be cheaper than a taxi.

Don't forget to plan for how you're going to return the vehicle at the end of the month.