Delta Air Lines flight DL251 from Barcelona to Boston declared a general emergency and diverted to Porto, Portugal after smoke was detected in the cabin roughly two hours into the transatlantic flight. The aircraft landed safely and the flight was rescheduled for the following day, with two connected flights canceled due to crew and aircraft being out of position.
A Delta Airlines Airbus A321-200N encountered fuel fumes in the cabin after departing Kahului, Hawaii on September 19th 2026, prompting the crew to divert to Honolulu at 5000 feet. Both pilots used oxygen masks as the cabin filled with fumes that caused eye irritation; one flight attendant was hospitalized and the aircraft remained grounded in Honolulu 31 hours after landing.