
You generally cannot use airline miles directly to rent a car in Canada. Instead, most frequent flyer programs require you to convert your miles into points within their affiliated car rental partner's loyalty program. The process, value, and availability vary significantly between .
The most common path is through an airline's travel portal, where miles are treated as a currency to book a car rental. For example, with Aeroplan (Air Canada's program), you can book rentals through their portal, but the mileage cost is dynamic and often not a great value compared to paying cash. Other programs, like American Airlines AAdvantage or Delta SkyMiles, have similar portals. Alternatively, some programs allow direct transfers to partners; British Airways Executive Club Avios can be converted into Hertz points, but the transfer ratio determines the final value.
The number of miles needed is highly unpredictable. It depends on the rental company, car class, rental duration, location, and demand. A weekend rental in Toronto might cost anywhere from 5,000 to 15,000 miles, but you could find a better cash rate for under $200. It's crucial to compare the cash price against the mileage cost to assess the value you're getting per mile.
| Airline Program | Primary Rental Partner(s) | Typical Conversion/Booking Method | Estimated Mileage Cost for a 3-Day Compact Rental (CAD $300 equivalent) |
|---|---|---|---|
| Aeroplan (Air Canada) | Budget, Avis, Hertz | Booking via Aeroplan portal | 15,000 - 25,000 miles |
| WestJet Rewards | Budget, National, Alamo | Booking via WestJet portal | 300 - 500 WestJet Dollars |
| American Airlines AAdvantage | Budget, Avis, Hertz | Booking via AA portal | 12,000 - 20,000 miles |
| Delta SkyMiles | Avis, Hertz, Sixt | Booking via Delta portal | 14,000 - 22,000 miles |
| British Airways Executive Club | Hertz | Convert Avios to Hertz points | 16,000 Avios (varies by transfer bonus) |
Before using miles, always check the cash price first. Using miles for car rentals rarely offers the best redemption value; you typically get less than 1 cent per mile in value. You're almost always better off saving your miles for flight redemptions and paying for the rental car with cash, especially if you can use a discount code or corporate rate.

Forget using miles directly. You'll need to go through your airline's website to their "travel" or "car rental" section. I tried it once with my Delta miles for a trip to Vancouver. The miles required were so high it was a rip-off. I just paid cash and saved my miles for a future flight. It's never the best deal. Just book the car normally and use a card that gives you rental insurance.

The key is understanding the opportunity cost. As a points enthusiast, I analyze the cents-per-mile value. Redeeming 20,000 miles for a $250 rental values each mile at just 1.25 cents. However, those same miles could be worth 2-3 cents each for a business class flight. My strategy is to use a card that earns points on travel purchases, effectively getting a discount on the rental while preserving my more valuable airline miles for premium cabin awards. The flexibility of bank points often outweighs fixed airline partnerships.

It's usually a bad deal. They make it sound easy, but the math rarely works in your favor. You'll burn a huge chunk of your hard-earned miles for something you can often get with a simple online discount code. I look for weekly rental specials and use a cashback card. Those miles are better for covering the taxes and fees on an award flight, not for a rental car that's going to cost you another fortune in gas and anyway.

Instead of focusing on miles, check if your card offers a primary rental car insurance benefit. This can save you $20-$30 per day by declining the rental company's expensive collision damage waiver (CDW) in Canada. That savings is often more valuable than any mileage redemption. Also, sign up for the free loyalty programs with all the major rental agencies. You often get perks like faster check-in and the potential to earn points or miles on the rental itself, which is a smarter way to use the system.


