Place the sliced sweet potatoes in a large bowl with cold water. Allow the sweet potatoes to soak in the water for an hour.
Place the sweet potatoes in a Ziploc bag with the corn starch.
Seal the bag and shake to evenly coat the fries.
Spread the fries onto a flat surface and coat them with the canola and olive oil and seasonings.
Add the fries to the Air Fryer basket. Adjust the temperature to 380 degrees and cook for 23-25 minutes. Set a timer for 10 minutes and stop and shake the basket at the 10-minute mark (once). Use your judgment. If you like crispy fries, cook them longer and be sure to check on them.