MINNEAPOLIS (WCCO) — A federal judge has ordered the Federal Aviation Administration to review seat sizes and legroom on commercial airlines.

It’s a victory for Flyers’ Rights, an advocacy group that has pushed for new rules regulating seat sizes.

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Flyers’ Rights says small airlines seats can put people’s health at risk with conditions like blood clots in legs.

They also say the average size of the seat itself has shrunk, along with space between the one behind.

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According to a report by Business Insider, the major airline that has the most space between seats is JetBlue, with 34 inches apart.

The airline that boasted the least room was Spirit, with 28 inches between seats.

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Delta Air Lines and American Airlines were in the middle, with 31 inches between seats. Virgin America and Southwest had 32 inches, according to the report.