From the US Embassy Tokyo automatic response email:Q: Can I transit through Tokyo on my way somewhere else?



A: Based on the most recent information that we have received from the Government of Japan; yes, you can transit through Tokyo on the way to the U.S, but several conditions exist.

1. If transiting through Narita Airport, you must arrive and depart on the same day. The transit area closes overnight. You will not be able to clear immigration to pick up bags. Please talk to your airline for more information.
2. If transiting through Haneda Airport, you will not be able clear immigration to pick up bags. The transit area is open 24 hours, but we recommend that you contact the airport and airline to confirm before departure.
3. Transit from one airport to another is not possible.

Please note that this information is subject to change at any time without notice and it is your responsibility as the traveler to confirm all this information with the relevant authorities prior to travel.