Rental car companies in San Juan operate from the airport and Old San Juan, with daily rates typically ranging from $30 to $80 depending on vehicle size and season

San Juan's main rental hub is Luis Muñoz Marín International Airport (SJU), where every major company has a counter: Enterprise, Hertz, Avis, Budget, and National all operate there. You can also rent from smaller local operators like Vieques Air Link or independent agencies in Old San Juan, though airport locations offer the widest selection and often the most transparent pricing. Rates fluctuate sharply by season—winter (December through March) costs roughly double what you'll pay in summer, and holiday weeks can spike further.

The rental process itself is straightforward: you need a valid driver's license (US, Canadian, or international), a credit card in your name, and proof of insurance. Most companies require you to be at least 21 years old, though some charge an extra daily fee ($15 to $25) for drivers under 25. If you're flying in, picking up at the airport is convenient but adds a 10% airport surcharge to your bill—picking up in town saves that fee but requires ground transportation to reach the lot.

Key Takeaways

  • Airport rentals cost 10% more than town pickups due to airport fees, but offer more vehicle options and longer hours.
  • You need a valid driver's license, credit card, and proof of insurance; an international license is accepted but not required for US citizens.
  • Damage waivers and liability coverage are optional add-ons that can double your daily cost, so check what your personal auto insurance or credit card already covers.
  • Driving in San Juan requires a valid Puerto Rico driver's license or your home state license; US licenses are legal but some rental companies may ask for an International Driving Permit.
  • Book directly with the company or through aggregators like Kayak or Autoslash, but always call the rental location 24 hours before pickup to confirm your reservation and final price.

Insurance and damage coverage: what you actually need to buy

Rental companies will push you to buy a damage waiver (called a Loss Damage Waiver or LDW) and liability coverage. These are not required by law in Puerto Rico, but understanding what you already have saves hundreds of dollars. Check your personal auto insurance policy first—most US policies extend to rental cars, including collision and liability. If your policy covers rentals, you do not need to buy the company's coverage. If you don't have personal insurance, a credit card may cover rental damage; call your card issuer before you rent to confirm the exact terms.

If neither your insurance nor your credit card covers rentals, the rental company's damage waiver typically costs $15 to $30 per day. Liability coverage (required by law but sometimes included in your personal policy) adds another $10 to $20 daily. In San Juan, where traffic is heavy and parking is tight, damage claims are common—dents, scratches, and mirror damage happen frequently. Buying the waiver protects you from paying out of pocket, but read the fine print: some waivers exclude damage from off-road driving or theft, and all of them require you to report damage within a set time (usually 24 hours).

Driving in San Juan: licenses, tolls, and road conditions

Your US driver's license is legal in Puerto Rico, and you do not need an International Driving Permit unless you want a backup document. However, some rental companies request an IDP anyway—if you have one, bring it. Puerto Rico drives on the right side of the road, and speed limits are posted in miles per hour, just like the mainland. Traffic in San Juan is heavy, especially on PR-22 (the main highway to the airport) and around Old San Juan during tourist hours. Parking in Old San Juan is scarce and expensive ($3 to $5 per hour in lots); many visitors park at a hotel or use street parking in less touristy neighborhoods.

Tolls on PR-22 and PR-52 are electronic and charged to your rental car's account. The rental company will bill you after you return the vehicle, usually adding a $2 to $3 processing fee per toll transaction. If you plan to use tolled highways frequently, ask the rental company whether they offer a prepaid toll pass. Gas stations are common throughout San Juan; fill the tank before returning the car, as rental companies charge inflated prices (often $6 to $8 per gallon) if you return it empty. Road conditions vary—major highways are well-maintained, but some neighborhood streets have potholes and poor lighting.

Booking strategies: airport versus town, and timing your reservation

Booking at the airport is most convenient if you're arriving by plane, but the 10% airport surcharge adds up quickly. A $50 daily rate becomes $55 at the airport. If you're staying in Old San Juan or Condado and don't need a car when ready, renting from a town location saves that fee and sometimes offers lower base rates. Enterprise and Hertz have locations on Ashford Avenue in Condado; several independent operators work out of Old San Juan. The trade-off is that you'll need a taxi or rideshare to reach the rental lot, which costs $15 to $25 from the airport.

Book as early as possible—rates drop when you reserve weeks in advance and spike when you book within days of pickup. Use aggregator sites like Kayak, Autoslash, or Priceline to compare rates across companies, but always call the rental location directly 24 hours before your pickup date. Prices shown online sometimes don't include local taxes (which add roughly 16% in San Juan), and the company may have updated rates or availability. Confirm your vehicle type, pickup time, and final price by phone; email confirmations are useful but a phone call ensures the reservation is actually held.

Seasonal pricing and what to expect year-round

Winter (December through March) is peak season in Puerto Rico, and rental rates reflect that. A compact car that costs $35 per day in July might cost $70 in January. Holiday weeks (especially Christmas and New Year's) are the most expensive, with rates sometimes reaching $100+ per day for basic vehicles. Spring break (March through early April) also sees higher prices. Summer and early fall are cheapest, with rates dropping 40% to 50% compared to winter, though September and October bring hurricane season—some companies offer discounts during these months, but availability may be limited.

If you're flexible on dates, traveling in June, July, or August saves the most money. If you must travel in winter, book at least six weeks ahead and consider renting from a town location rather than the airport. Mid-week pickups (Tuesday through Thursday) are sometimes cheaper than weekends, though the difference is usually small. One-way rentals (picking up in San Juan and dropping off elsewhere in Puerto Rico) typically cost more than round-trip rentals; ask about this when comparing quotes.

Vehicle types and what size makes sense for San Juan

Compact and mid-size cars are the most practical for San Juan. Streets in Old San Juan are narrow and congested, and parking spaces are tight—a full-size sedan or SUV becomes frustrating quickly. Compact cars (Honda Civic, Toyota Corolla) cost $30 to $50 per day and handle city driving well. Mid-size cars (Toyota Camry, Nissan Altima) run $40 to $65 daily and offer more comfort for longer drives to other parts of the island. SUVs and full-size vehicles start at $60+ per day and are overkill unless you're planning off-road exploration or traveling with a large group.

If you're staying in Old San Juan and only driving to nearby beaches or restaurants, a compact car is sufficient. If you're renting for a week and planning day trips across the island (to El Yunque, Culebra, or Vieques), a mid-size car is worth the extra cost for comfort and reliability. Automatic transmissions are standard and included in all quoted rates; manual transmissions are rare and usually cost the same. All rental cars in San Juan come with air conditioning, which you'll need in the tropical heat.

Drop-off and return: avoiding surprise charges

Return your car with a full tank of gas, no damage, and a clean interior. Rental companies charge $6 to $8 per gallon if you return it empty, which adds $50+ to your bill. Take photos of the car's exterior and interior before you leave the lot—this creates a record if the company later claims pre-existing damage. Return the car during business hours (most airport locations are open 6 a.m. to midnight; town locations vary) so a staff member can inspect it with you present. If you return it after hours, the company may assess damage you didn't cause and bill you later.

Check your final bill before leaving the lot. It should include only the daily rental rate, taxes, tolls (if any), and any add-ons you purchased. Unexpected charges for fuel, damage, or late fees sometimes appear; dispute them on the spot if they're wrong. Keep your rental agreement and receipt for at least 30 days in case a charge appears on your credit card later. If you rented through a credit card company's travel protection, report any disputed charges to them as well.

Frequently Asked Questions

Do I need an International Driving Permit to rent a car in San Juan?

No. Your US, Canadian, or other valid home country driver's license is legal in Puerto Rico. Some rental companies request an IDP as a backup form of ID, but it is not required. If you have one, bring it; if you don't, your regular license is sufficient.

What happens if I get into an accident?

Call the rental company when ready and report the damage. Do not leave the scene or admit fault. Take photos of all damage, get the other driver's insurance information, and file a police report if another vehicle is involved. The rental company will assess whether the damage is covered by your purchased waiver or your personal insurance. If you didn't buy a waiver and your insurance doesn't cover it, you'll pay out of pocket.

Can I rent a car if I don't have a credit card?

Most rental companies require a credit card in your name for the reservation and as a hold for potential damage charges. Debit cards are sometimes accepted, but the hold may be larger and the company may require additional documentation. Call the rental location ahead of time to ask about their debit card policy.

Is it cheaper to rent at the airport or in town?

Town rentals are cheaper because they don't include the 10% airport surcharge. However, you'll need to pay for ground transportation to reach the rental lot, which costs $15 to $25 from the airport. If you're renting for three days or less, the airport surcharge may cost less than a taxi ride; for longer rentals, town pickups usually save money overall.

What should I do if the rental company charges me for damage I didn't cause?

Dispute the charge when ready with the rental company in writing, referencing the photos you took at pickup. If the company won't reverse it, contact your credit card company and file a dispute. Keep all documentation—your rental agreement, photos, and correspondence with the company. Most credit card companies will side with you if you have evidence the damage was pre-existing.