25 airlines with the lowest fees

As airlines adapt to a changing market, travelers are spending more and more on fees related to flying. In fact, consumers spent a staggering $36.7 billion in 2015 on optional services, like onboard food and beverages, baggage fees, seat selection and early boarding, according to a recent report from airline ancillary revenues consultant IdeaWorksCompany.

The pay-as-you-go pricing structure means some "low-cost" airlines can quickly become some of the most expensive. But not all airlines expect customers to pay exorbitant fees.

GOBankingRates used published airline fee schedules to find baggage fees for major domestic and international airlines with flights to and from the United States, ranking the best airlines based on total fees for carry-on, first and second checked bag. Find out which airlines have the lowest baggage fees, as well as other fees you might pay.

Methodology: Airlines were ranked based on listed carry-on and first and second check baggage fees for economy-class tickets on domestic routes within the United States or, in cases of international carriers, on international routes from a major U.S. city to the airline's main hub. In cases where a range of fees are listed, airlines were ranked based on lowest listed fees for economy-class tickets. Excess baggage fees did not factor into the ranking and are provided for added information only. Pet fees, unaccompanied minor fees, meal fees and other a la carte service fees also did not factor into the ranking and are provided for added information only. Unless otherwise stated, all fees are each way, not round-trip. Some fees also have taxes, which are not included. All prices and fees are listed in U.S. dollars based on conversion rates on May 16, 2016.

This article originally appeared on GOBankingRates.com: 25 Airlines With the Lowest Fees

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