KODIAK, Alaska (AP) -- It turns out, there is no such thing as a free beer, at least on Era Alaska flights.

The airline had been offering a free 6-ounce beer to adult passengers on certain routes in the state.

But marketing manager Micah Lillard tells KMXT ( http://is.gd/a8gMNG ) the promotion has to be changed but declined to say why.

The airline will now charge $1 for the first glass of Denali Brewing Co.'s "Single Engine Red" and $1 for each additional drink. The previous promotion offered the first beer free and every beer thereafter $3.

The drink specials are available on the airline's Dash 8 routes between Anchorage and Fairbanks, Deadhorse, Homer and Kodiak. The promotion will end at the end of June, but Lillard says they are considering extending it into July.