Booking Channels

Benefits of SLAC Travel – Booking Channels

The following benefits are exclusively available through SLAC Travel: 

  • Reservations are sent and connected to Stanford's International Travel Assistance Program (ISOS)
  • Airline ad hoc waivers and favors such as preferred seats, priority boarding, name changes, change-fee waivers and unused ticket extensions 
  • Stanford-negotiated discounts with all major airlines, lodging and ground transportation providers 
  • Payment by SLAC Travel Card (T-Card) simplifies expense reimbursement process
  • Simplified reconciliation and reimbursement processes; comparison fares are not required unless one of the below occurs for SLAC-sponsored travel
    1. The trip includes a personal component
    2. The itinerary is an indirect route
    3. The fare class is out of policy
    4. The most economical method of transportation is not selected for a trip, for example, a rental car is selected instead of air travel


SLAC Travel Booking Channels 

SLAC Travel is comprised of booking channels that, within them, feature over 50 travel partners, who provide airline, lodging and ground transportation booking services under negotiated rates and terms. Each channel offers various benefits that are described below. SLAC employees are free to choose any channel to book SLAC-sponsored travel.



Permitted Use for 100% Leisure Travel


Get Assistance with SLAC Travel Booking Channels

See the table below to make a reservation through SLAC’s Travel booking channel or to get help with a reservation.  

Service Fees may apply.

 booking channel phone support email support
Book online or with an agent 

24 hours a day: 
1- 1-417-520-4735 (International) or 
1-877-737-2533 (U.S.)
Monday through Friday, 5 a.m. to 5 p.m. PST 
United Corporate Direct (UCD);
Book online only 
You must already be enrolled to book on or the United Airlines app  

UCD travel cannot be booked by phone. Book through  or the United Airlines app 
(For assistance accessing UCD rates. Response to emails will be sent within 24 hours Monday through Friday.)  

Grace Period

Please note that as of Oct. 4, any SLAC travel expenses incurred by booking through outside sources or using a personal credit card may not be reimbursed. There will be a transitional period from Oct. 4, 2021 to Nov. 30, 2021 where employees who used their personal card can seek reimbursement. Beginning Dec. 1, 2021 the T-Card policy mandate will be enforced, with any exceptions being approved by the Controller.


Guidance for Booking Travel

Through SLAC Travel, SLAC employees can book travel for themselves, SLAC visitors and on behalf of other SLAC employees (with approval) as travel arrangers. All travel booked through SLAC Travel may be paid for by the Travel Card (T-Card). For an overview of the considerations for planning and reimbursing travel, visit the Travel and Expense Policy


It is the responsibility of the individual incurring expenses, those who assist others with incurring expenses and those involved in the preparation and approval of reimbursement requests or financial transactions to exercise good stewardship of SLAC funds and to adhere to SLAC’s policies. The individual incurring the expense and the appropriate administrator must ensure that all costs are in compliance with SLAC Travel and Expense Policy prior to purchasing.


To expense SLAC-sponsored travel, travelers must use a SLAC Travel Card (T-Card) and the SLAC Travel Booking Channels when booking airfare, hotels or car rentals.

Exclusions to this policy include:

  • New hires
  • Visitors
  • Sponsored Guests
  • Non CWR-SU employees such as Stanford University faculty, staff, students, postdocs and fellows



The Fly America Act requires all flights charged to federal awards (SLAC DOE funds) be booked with U.S. flag air carriers. The requirement applies to all travelers, including a foreign visitor's flights.

U.S. air carriers may designate foreign air carriers that codeshare with a U.S. flag carrier by showing as "operated by" on the flight taken. If there is no U.S. carrier to the destination, the traveler must take a U.S. carrier as far as possible. By law, additional cost for U.S. carrier flights is not sufficient justification to fly on foreign carriers.


Codesharing is when an airline ticket is issued by one airline but operated by another. When a U.S. flag carrier leases seats on a foreign carrier and the ticketing code is from the U.S. airline, it meets the Fly America Act requirements. Any airline used by the U.S. airline as a codeshare is approved.

For example:

  • Delta Flight 6717 operated by Aeroflot Russian Airlines meets the requirements for Fly America Act. 

  • The same flight purchased as AEROFLOT Russian Airlines 107 does not meet Fly America Act requirements. 

An itinerary, invoice or boarding pass normally provides proof of codeshare. If there is no documentation showing the U.S. carrier code and flight number, the flight cannot be charged to SLAC DOE Funds.

Open Skies Agreements: Exceptions to Fly America Act

One exception to the Fly America Act is the Open Skies Agreement. The U.S. General Services Administration (GSA) states that qualifying travelers, whose travel is supported by federal funds may travel on certain foreign airlines as well as U.S. flag air carriers.

If any portion of a flight using federal funds is not flown on a U.S. air carrier, a FAA Waiver Checklist must be completed and attached to the Concur Expense Report at time of reconciliation/reimbursement as support for using a foreign air carrier. If at least one exception is found on the form, then travel may be completed using a foreign air carrier. 

For policies and guidance related to air travel on offical SLAC business, refer to the links below:

Hotel and Lodging

Lodging can be booked for SLAC Business travel with Egencia.

General guidance and information related to hotel and lodging can be found in the Travel and Expense Policy.

Ground Transportation

Ground transportation can be booked for SLAC Business travel with Egencia.

General guidance and information related to the use of government or personal vehicles, rental cars and ridesharing services/taxis can be found in the Travel and Expense Policy.