Icelandair’s aircraft mechanics were due to begin an indefinite strike at 00:01 on Wednesday, September 23, 2026, after mediation collapsed the previous Friday without an agreement. The airline had already warned that it would cancel every departure from Iceland on September 23 and 24 if the walkout went ahead.
Icelandair Group disclosed the strike notice to the Nasdaq Iceland exchange on September 14. The action was called by the Icelandic Aircraft Mechanics Association, known as FVFÍ, and the company said it “has been called for an indefinite period.”
What the Airline Told Passengers
The planned cancellations covered both international and domestic services. Icelandair operates roughly 110 flights and carries about 15,000 passengers a day in September, near the top of its season.
Travelers booked around the strike window were offered free changes, subject to seat availability. About 3,000 had already moved their bookings by Tuesday, September 22, RÚV reported.
No flights had actually been canceled at that point. Icelandair said it would decide by the time the strike began, and told passengers to check their flight status with the airline before traveling to Keflavik International Airport.
Icelandair Group also told the exchange that “the potential financial impact of the strike on Icelandair Group cannot be determined” at the time of the announcement.
Where this stood at publication
This is a developing labor dispute. As of the latest reporting available on September 22, 2026, no agreement had been reached and the strike was set to begin at 00:01 the following day, but neither the start of the walkout nor the final cancellation list had been confirmed. Passengers should check directly with Icelandair rather than rely on any figure here.
Why Mechanics Can Stop a Fleet Faster Than Pilots
A pilot or cabin crew strike removes the people who operate an aircraft. A mechanics strike removes the people who are legally permitted to declare it fit to fly, and that is a much harder gap to cover.
Under the European safety rules Iceland follows through the EEA, an aircraft cannot be returned to service after maintenance until certifying staff, normally a licensed Part-66 engineer, sign a certificate of release to service. No signature means no departure, however many pilots are on standby.
That is why the effect compounds rather than arriving all at once. Aircraft already released to service can keep flying until something breaks, but every check that falls due and every snag written up during a turnaround parks another airframe.
One Base, No Second Option
Icelandair’s network is built around a single hub at Keflavik. It has no comparable second base, so there is no other station where a different team could sign its aircraft back into service.
The airline is also a connector rather than a point-to-point carrier. Its schedule exists to funnel North American passengers onto European flights through Iceland, so a stoppage at Keflavik breaks journeys that were never meant to stop there at all.
The airline is also part-way through a move to an all-narrowbody fleet built around the Boeing 737 MAX and the Airbus A321LR, retiring its Boeing 767s and phasing out the 757 across 2026, AirlineGeeks reported. A simpler fleet is easier to maintain in normal times, and concentrates the exposure when the engineers who maintain it walk out.
Icelandair’s Mechanics Struck Once Before
Iceland has been through this before. Icelandair’s mechanics struck on December 17, 2017, after six months of failed negotiations, canceling flights to London, Brussels, Zurich, Manchester and Oslo while most of the rest of the schedule was delayed indefinitely.
That dispute also went to the wire, with talks resuming the same afternoon the walkout started. Airline labor deadlines frequently pass without a stoppage: Jazz Aviation’s dispatchers settled in a strike averted at the deadline in August 2026.
Others do not. The WestJet cabin crew walkout the same month grounded flights before a tentative agreement ended it after barely a day, which is the shape Icelandair passengers will be hoping for here.
Sources and references used for research and fact-checking.
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About the Author
Tim is the owner and lead editor of AeroCorner since 2019, overseeing aviation content covering aircraft, airlines, airports, and the broader aviation industry. Through years of researching, writing, editing, and publishing aviation-focused content, he has developed extensive practical knowledge of commercial aviation and air travel. Based in Asia and a frequent traveler himself, Tim also brings firsthand passenger experience to AeroCorner’s coverage. Outside of publishing, he has also explored aviation firsthand through hands-on flight training in New Zealand.