Welcome to Berkeley Lab Travel




The TREX travel reimbursement system is now up and running. The new Project and Activity information is now available for all new and existing authorizations and expense reports.


To look up the new Project and Activity, please CLICK HERE.

Note: You must clear cache (or browsing history) in the browser you are using to log into TREX.



State of California YCal Airfare Program


As of October 1, 2014, the State of California has consolidated their airfare program.    


State of CA YCal airfares can no longer be issued by CarlsonWagonlit Travel.

The current State of California YCal Airfare Program is for contract year July 1, 2014 - September 30, 2015. The Laboratory will continue to be a participant in the State negotiated discount airfare program (referred to as YCal) for several city-pairs for travel within California and Out of State (only) while traveling on official business. No International YCal travel.

Click here for a complete list of YCal destinations:

The purchase of YCal tickets are optional and must be booked through the State of California’s contracted agency, the CalTravelStore.  We have been provided with an 800 toll free number.  Travelers will need to call 1-877-454-8785   and speak with a travel coordinator and provide additional information as needed.   Traveler profiles will be built by CalTravelStore agents.

The agents are available from 8:00 AM to 5:00 PM, Monday through Friday. After hours assistance is available in emergency situations.

We have established several restrictions/guidelines in which Lab travelers must abide. Click here to read them.


Questions: email TravelHelp@lbl.gov



Travel Announcement Archive:

    • To read previously posted Travel announcements, click HERE.