I went on British Airways' Airbus A320 planes before and after a major transformation. See how the old and new compare.

Pete Syme/Business Insider

• British Airways is upgrading its short-haul cabins as part of a huge investment.
• I flew on one of the older A320s, then toured a brand-new A320neo at the Farnborough Airshow.
• The new color scheme is sleek and modern while the passenger experience is improved too.

British Airways is spending $9 billion to lift its reputation after years of slumping popularity.

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