Unexplained cabin odor sickens seven flight crew members on a Honolulu bound flight.

Seven flight attendants became ill after an unexplained odor was reported aboard Alaska Airlines Flight 803, operated by Hawaiian Airlines, on a flight from Los Angeles to Honolulu. Emergency responders evaluated them at the airport for nausea and headaches; all declined hospital transport, and passengers were not affected. The odor’s source has not been determined. The aircraft was inspected before returning to service, with one report saying it resumed operations after about 10 hours.
The aircraft was an Airbus A330 carrying 252 passengers, none of whom were reported affected.
InsideFlyer reported that the aircraft had experienced a similar odor event in June 2025, when it diverted to Tokyo. The report said vaporized engine oil was suspected in the latest incident, though the cause had not been confirmed.
Alaska Airlines had a previous odor-related incident in September 2024: Flight 810 diverted to Honolulu after four flight attendants became ill, and the aircraft later flew to Seattle without passengers for further inspection.
A separate recent odor incident involved Delta Flight 958, which diverted to Albuquerque after a smoky smell was reported in the cabin.
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