Only two of Japan's 50 nuclear plants are currently operating; the rest have been shut down for maintenance and safety checks while the country re-examines the future of nuclear power there.
All Nippon Airways spokesman Takuya Taniguchi said government officials were checking on the runways at Sendai airport.
The two jets that were in the air went to other airports and all seven flights scheduled to go to Sendai for the day were cancelled, he said.