Other carriers flying a similar route that day decided to add an hour to the flight time and fly around the area, according to the aviation website One Mile at a Time.
United Airlines flight UA7 from Houston and UA837 from San Francisco both completed their journey to Tokyo.
Unfortunately, those on the Dallas-Tokyo flight were airborne for almost 12 hours, which is about as long as the entire journey should have taken. However, passengers ended up travelling a distance of just 1987 km.
The mistake was picked up by a man on Twitter under the username JonNYC. "Supposedly a volcano just went off in/near Asia, may be impacting ICN/NRT flying for a bit," he initially tweeted.
This is not the first time an unexpected event has caused issues for a flight. In April, Cathay-Pacific accidentally claimed the record for the world's longest flight.
The airline's New York to Hong Kong service flew over the Atlantic Ocean, UK, southern Europe and Central Asia in order to avoid Russian airspace.
The trip was 16,618km, making it the longest distance flown by a commercial flight.