Terms & conditions: All United Airlines boarding passes must be shown to the driver upon boarding the bus, along with a government issued ID (license, state ID) or passport. One United Airlines boarding pass per person. All others must pay the regular round-trip fare per person. United Airlines boarding passes must be dated within 14 days of YARTS trip. Passes older than 14 days will not be honored. Boarding for YARTS will be based upon availability. Presentation of a United Airlines boarding pass does not guarantee a seat on the YARTS bus. This promotion is only valid from 06/15 - 09/30/2019 (Mammoth Lakes - subject to road opening) and 05/14 – 9/14/19 (Fresno). Please be advised that United Airlines boarding passes will not be honored during YARTS Free Day services, on the following days: May 26 & 27, 2019, July 4, 2019. No pets are allowed on YARTS. YARTS reserves the right to refuse service to anyone or to disembark passengers who do not follow bus rules. YARTS will not be held responsible for any items left on the bus or lost during transport.