Is 1 hour enough time to change airlines in tokyo japan?

Question:

Theres a flight in orbitz that makes you change airlines in japan and time between flight is 1 hour. if this is dangerously way too close why would they even sell this ticket?

it doesnt say change plane, it says change airlines. im coming from Phillipines to airport NRT in tokyo and it says change airlines for the flight to Washington DC....remember its not change plane its change airlines, the airline change is from nippon to united

Answer:

It depends on certain factors, such as arriving and departing at/from the same terminal, having your bags checked all the way through (and the different airlines having an agreement to do it), the air traffic at the time you are flying as well as being on-time, etc. It is possible to make a connection within an hour if all goes well, but it is uncommon for different airlines to schedule a connection in so little a period.
As to why they'd sell you such a ticket, it's because you are willing to buy it. Online places like Orbitz, Expedia, Travelocity, Priceline etc basically sell you the ticket, and as much as possible avoid doing anything more. If you need to change your flight date or anything the first thing they say is "call the airline", which is the wrong answer. Before an outbound departure any changes or refunds *must* be done by the issuing agency - since they issued the ticket in the first place. That doesn't stop their call center agents in India with fake English names from trying to dump you on the airlines though, making you wait on hold for 20-30 minutes just to have the airline say "the agent needs to do it". There's a good reason why they often refer to Travelocity as "Trouble City".
In any case, you should call United and ask if an hour is a legal connection. If not, the agency is obligated to change it free of charge, since they sold it to you as a valid connection. Unless you want to assume the risk, but if you miss the connecting flight you are on your own.