There are four direct and indirect flights connecting Birmingham USA and Tokyo every week, with the journey taking 39 hrs 25 mins on average.
Or, if you're fairly flexible on dates, try to get a last minute-deal by regularly checking the Netflights website.
Tokyo actually has one airports to choose from – but New Tokyo International Airport (NRT) is the usually the cheapest option. If you need to fly into a specific airport, adjust your search to focus on those flights. The most popular airlines include Japan Airlines.
If you can’t find flights that suit you, consider flying to a another part of Japan.