To find which airline needs to do the most work when it comes to providing a smooth travel experience, we started by looking at the College of Aviation at Scholarly Commons 2020 Airline Quality Rating (AQR), an annual report since 1991 that assesses the performance of airlines in the U.S. based on on-time flights, denied boardings, customer complaints, and more. We included each airline’s AQR rank, where first is the best and tenth is the worst. Then we gathered the Skytrax airline star rating for each carrier. These ratings are considered to be a benchmark for airline standards and are “based on evaluation of product and service standards across the onboard and airport environments, using a unified and consistent rating system,” with five stars being the best score possible. In addition, we looked to The Wall Street Journal (WSJ) and their comprehensive analysis of the best and worst airlines in the U.S. in 2020 based on cancelled flights, extreme delays, passenger complaints, involuntary bumping, and more. Like we did with the AQR, we included the overall rank received from the WSJ, where first is the best and ninth is the worst. Finally, we looked to a recent study conducted by Luggagehero, which analyzed six years of statistics from the Department of Transportation to determine how many bags per 1,000 passengers each airline loses every year on average. We then gave each metric a weighted value before running them through our exclusive algorithm to see how each airline scored on our 100-point Flight Fail Index. So, before booking your next trip, save yourself some potential frustration by avoiding the most unpopular airline in America. Read on to find out what it is, and for more things that consumers are less than thrilled about, This Is the Most Unpopular Soda in America, According to Data. Editor’s note: “N/A” indicates that data was not available for that particular metric. We adjusted the algorithm to ensure that each airline was scored fairly and accurately. Read the original article on Best Life. AQR rank: 3rd Skytrax rating: 4 out of 5 stars WSJ overall rank: 1st Lost luggage per 1,000 people: 3.6 pieces Flight Fail Index Score: 0.00 And if you are wondering about how safe the place is that you plan on traveling to next, This Is the Most Dangerous City in America. AQR rank: 4th Skytrax rating: 3 out of 5 stars WSJ overall rank: 2nd Lost luggage per 1,000 people: 1.55 pieces Flight Fail Index Score: 30.04 AQR rank: 1st Skytrax rating: 3 out of 5 stars WSJ overall rank: 5th Lost luggage per 1,000 people: N/A Flight Fail Index Score: 33.20 AQR rank: 2nd Skytrax rating: 3 out of 5 stars WSJ overall rank: N/A Lost luggage per 1,000 people: 2 Flight Fail Index Score: 35.67 AQR rank: 5th Skytrax rating: 3 out of 5 stars WSJ overall rank: 3rd Lost luggage per 1,000 people: 3 pieces Flight Fail Index Score: 47.41 AQR rank: 8thae0fcc31ae342fd3a1346ebb1f342fcb Skytrax rating: 3 out of 5 stars WSJ overall rank: 4th Lost luggage per 1,000 people: 1.9 pieces Flight Fail Index Score: 58.49 AQR rank: 6th Skytrax rating: 3 out of 5 stars WSJ overall rank: 7th Lost luggage per 1,000 people: 2 pieces Flight Fail Index Score: 58.65 And for more exclusive rankings sent straight to your inbox, sign up for our daily newsletter. AQR rank: 7th Skytrax rating: 3 out of 5 stars WSJ overall rank: 6th Lost luggage per 1,000 people: 1.8 pieces Flight Fail Index Score: 59.17 AQR rank: 9th Skytrax rating: 3 out of 5 stars WSJ overall rank: 7th Lost luggage per 1,000 people: 2.9 pieces Flight Fail Index Score: 79.50 AQR rank: 10th Skytrax rating: 3 out of 5 stars WSJ overall rank: 9th Lost luggage per 1,000 people: 4.3 pieces Flight Fail Index Score: 100.00 And for the eateries to avoid wherever you find yourself, This Is the Most Unpopular Restaurant Chain in America.