The 10 airlines that got better — and worse — at handling bags during this year’s busy season

Summer is the airline industry’s busy season, when sustained passenger volumes tend to be at their highest. But with greater traffic comes more baggage, and with more baggage comes more opportunity to mishandle baggage. Based on a Quartz analysis of Department of Transportation data for mishandled baggage — which the government defines as checked luggage “lost, damaged, delayed, and pilfered” — this is how much airlines stepped their game. In some cases, airline performance was a step down.

Take a look at which airlines did better and which ones did worse when it came to baggage mishandling.