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Approval Workflows for Out-of-Policy Bookings

Engine Approvals routes out-of-policy lodging, flight, and rental-car requests to configured admins or department managers. Approvers receive email or text alerts and can approve and book at the current price or decline with a reason.

Last updated September 14, 2026

How it works

An admin enables Allowed with Approval within the lodging, flight, or car rules of a travel policy, chooses approvers, and sets the notification method. When a traveler selects an out-of-policy option, they provide a reason and submit a request from the booking flow. The approver receives an email or text, reviews the current price and booking details, then approves and books or declines with a reason. Fares and rates are not held while a request is pending, so the price shown at approval is the price booked. The traveler is notified of the decision by email. If approved, the booking appears on their Trips page; declined and expired requests are removed from Trips.

Who it is for and how to use it

It is for companies that permit justified travel exceptions but want a decision before booking. Approval rules can cover lodging, flights, and rental cars. Requests can go to all admins by default or selected admins, and optionally to department managers. Define clear thresholds, configure the appropriate approvers and notification method, and assign the travel policy to the relevant members or departments.

Engine Approvals vs. Allowed with Reason

Dimension Allowed with Reason Engine Approvals
Decision Traveler proceeds after selecting a reason Approver must approve and book or decline
Notification Admin notifications can be enabled Approver receives email or text
Outcome Booking can continue immediately Traveler is notified after the decision

FAQ

Who can approve a request?

All company admins are approvers by default. Admins can instead select specific admins and optionally include department managers.

How are approvers notified?

Approvers can be notified by email or text.

What happens after approval?

Approve and Book completes the reservation for the traveler at the current refreshed price.

How long does an approval request remain open?

Requests expire after 24 hours. For same-day reservations, they expire at the end of the reservation day.

Which travel types support approvals?

Allowed with Approval can be configured within lodging, flight, and rental-car rules in Travel Policies.

Further reading

Try Engine Approvals.

Free to use. No contracts.