found some info here
"All major airports re-opened within 24 hours of the earthquake. After massive flight cancellations yesterday, air traffic is normalizing today. Inquire with your airline on details about specific flights.
Narita Airport (Tokyo): The airport re-opened yesterday, and is back to almost normal business today. JR and Keisei resumed train service between the airport and central Tokyo yesterday, while Skyliner and Narita Express trains resumed operation today. Some airport bus lines, however, remain out of service.
Haneda Airport (Tokyo): The airport re-opened within hours of the earthquake, and operation is almost back to normal. Monorail and train access to the airport was resumed on the 12th.
Sendai Airport, which was directly hit by the tsunami, can be expected to remain closed for some time to come. The two small airports of Hanamaki and Ibaraki also remain closed.
All other airports, including Osaka's Kansai Airport, Nagoya's Central Japan Airport and Fukushima Airport, are open.
Effects on train traffic
Many trains across Japan were stopped after the earthquake and tsunami, but most have resumed operation yesterday or today, except for most train lines in the affected Tohoku Region.
Tokaido Shinkansen (Tokyo - Nagoya - Kyoto - Osaka): Service resumed within hours of the earthquake and has been back to normal since yesterday.
The Tohoku Shinkansen (including Akita and Yamagata Shinkansen), which passes close by the worst hit areas, remains out of service along its entire route on March 13. Although the railway tracks did not seem to have suffered any major damage, no date for the resumption of service has been announced yet.
All other shinkansen lines, including the recently completed Kyushu Shinkansen, have been operating normally since yesterday.
Most major subway and urban and suburban train lines in Tokyo have resumed service yesterday with a few exceptions.
Urban transportation has mostly normalized in all other major cities of Japan, except Sendai.
The following long distance trains outside the Tohoku Region remain out of service on March 13:
Trains between Aomori and Hakodate
Night trains to/from Tohoku and Hokkaido
Super/Fresh Hitachi trains between Tokyo and Ibaraki