Air Canada to suspend Salt Lake City service through 2027

• The airline's routes between New York's John F. Kennedy International Airport and Toronto and Montreal will also be suspended for a few months June to October.
• Flyers affected by the suspensions will be contacted by the airline.

What they're saying: "Jet fuel prices have doubled since the start of the Iran conflict, affecting some lower profitability routes and flights which now are no longer economically feasible," the airline said in a statement last week.

The bottom line: Fuel is airlines' single biggest cost — and one they can't control, as shown by the volatility in oil prices during the Iran war, Axios' Joann Muller reports.