[arcticbull]

Definitely, because they were super forced by the DOT under 49 U.S. Code § 41712. [1,2,3]

[edit to include text:]

  The Department considers any advertising or solicitation by a direct air carrier [...] that states a price for such air transportation [...] to be an unfair and deceptive practice in violation of 49 U.S.C. 41712, unless the price stated is the entire price to be paid by the customer to the carrier...

  [...] Although charges included within the single total price listed (e.g., government taxes) may be stated separately or through links or “pop ups” on websites that display the total price, such charges may not be false or misleading, may not be displayed prominently, may not be presented in the same or larger size as the total price, and must provide cost information on a per passenger basis that accurately reflects the cost of the item covered by the charge.

[1] https://en.wikipedia.org/wiki/Transparent_Airfares_Act_of_20...

[2] https://www.law.cornell.edu/uscode/text/49/41712

[3] https://www.law.cornell.edu/cfr/text/14/399.84