Kenai is accessible by the Sterling Highway to Anchorage, Fairbanks, Canada and the lower 48 states. The City-owned Kenai Municipal Airport provides a 7,575′ asphalt runway, a 1,000′ turf strip, a float plane strip, and helicopter service.

A Flight Service Station is available. Float plane facilities are also available at Island Lake and Arness Lake. There are five additional privately-owned airstrips in the vicinity. The Kenai City Dock and boat ramp are located near the mouth of the Kenai River. There are also a number of private commercial fish processing docks, but no boat moorage.