How to create a travel request approval workflow

A travel request approval workflow is the sequence a business trip follows from an employee’s initial request to an approved booking: submission, policy check, routing, decision, and execution. The timing of the policy check determines whether the workflow prevents out-of-policy spending or merely documents violations after money is spent.

Automating the policy check and routing only exceptions to a human can help speed approvals while catching out-of-policy spend before it occurs.

What happens inside a travel request approval workflow

A standard travel and expense (T&E) approval workflow moves through five stages. Each stage is a chance to either automate a decision or create a queue.

• Submission. The employee files a travel request covering traveler details (name, department, manager, and cost center), trip details (destination, dates, and itinerary), a specific business purpose, and an estimated cost broken out by airfare, lodging, ground transportation, and meals.
• Policy check. An automated pre-screen tests the request against the rules, such as fare-class limits, preferred suppliers, advance-booking windows, and destination restrictions, before any human sees it.
• Routing. Compliant requests can clear automatically. Exceptions route to the right reviewer, typically the cost center owner, based on spend threshold and category.
• Approval or rejection. The approver decides within a set response window and responds with a documented reason when the answer is no.
• Execution. The approved trip gets booked against the cost estimate in the request. Post-trip expenses are later matched back to it during reconciliation.

If you want a hard gate before any booking occurs, you can build the request stage into the booking tool itself.

How to build a travel request approval workflow in 5 steps

Building the workflow requires a standard form and clear review assignments, with automatic decisions wherever human judgment isn’t needed.

1. Standardize the request with four required fields

The form works when it captures only the four fields from the submission stage — nothing else. Anything missing forces your reviewers to chase context; anything extra adds friction that pushes travelers toward workarounds.

The same discipline applies to the rules behind the form. A rule embedded in the booking tool runs on every transaction; a rule buried in a long policy document relies on someone remembering it. Shorter, encoded rules beat long documents.

2. Set approval tiers by spend and risk

Tiered routing sends each submission to the lowest level that has the authority to decide. A common structure looks like this:

• Routine domestic trips: Direct manager approval only
• International trips: Senior leader or finance review
• Totals above a set dollar threshold: Senior leader or finance review
• High-risk destinations: An additional check to verify the destination’s risk level and confirm that the traveler has coverage and emergency contacts

Keep your chain short by involving only the direct manager and travel manager when their authority fits the submission, and set a clear response-time expectation. For genuinely large spend, escalation should happen without manual forwarding.

3. Auto-approve in-policy trips and route only exceptions

A compliant trip shouldn’t sit in anyone’s queue. When reviewers see a steady flow of routine submissions, they may begin rubber-stamping them, which defeats the purpose of the gate. The fix is structural: Let those that meet every criterion clear instantly, and auto-route high-value or unusual items to a director or VP instead of defaulting everything to the direct manager.

Exception handling needs redundancy, too. Name backup or delegate reviewers for when your primary reviewers are unavailable, and make sure decisions can be made from a phone, since reviewers are often traveling themselves.

4. Replace static caps with market-based limits

Routing only genuine exceptions requires spending limits that reflect current market prices. A $200-per-night hotel cap that’s reasonable in a secondary market may be unrealistic in a high-cost market like Manhattan during peak periods, or in any city hosting a major conference; additionally, each review triggered only by an unrealistic cap can teach your travelers that the workflow is arbitrary. To help keep your limit realistic without loosening control, take a market-based approach to cost control — one that sets limits relative to the average market price for that city and date.

Because hotel rates change by destination and fluctuate with seasonal or local demand, a static cap can quickly drift out of date. Navan Travel uses policies that adjust thresholds by destination and seasonality.

5. Track cycle time and fix the bottlenecks it exposes

After setting your thresholds, cycle-time data shows where delays remain. Track approval cycle time and investigate recurring slowdowns.

Review your compliance rate and out-of-policy booking percentage weekly. Track exception volume on the same schedule. A weekly check of these numbers reinforces the same timing principle as the workflow itself: prevention at the point of approval.

Enforcement timing outweighs approval rigor

Catching a violation before money is spent depends on two conditions: enforcement built into the booking path, and travelers actually using that path.

Enforce policy inside the booking path

Pre-trip enforcement changes what travelers see: Compliant options surface first during search, and out-of-policy choices require justification before they proceed. Post-trip auditing discovers violations after the money is gone. Refusing reimbursement at that point punishes the employee without recovering much. In a Forrester Consulting Total Economic Impact™ study commissioned by Navan and based on a composite organization, a global category manager in life sciences described the before and after of using Navan: “We couldn’t see what was being spent until the end of the month. That made it hard to manage budgets or catch out-of-policy claims. Now our leakage rates are low.”

Treat adoption as the workflow’s precondition

An approval workflow only governs the trips that enter it. The State of Corporate Travel and Expense 2026, a report from Skift and Navan, found that 80% of business travelers surveyed book off-platform at least some of the time. Navan searches inventory through GDS connections, NDC connections, and OTA partnerships to surface competitive rates.

Tighter gates and more warnings can increase friction and lead more travelers to book outside the channel. Your compliant path has to be faster and easier than the workaround. Navan enables an average booking time of seven minutes and drives high adoption rates. Every booking made outside the channel bypasses the policy check and the duty-of-care record. It also leaves your finance team without the reconciliation data it needs at close.

Make the compliant path the fast path

A well-built travel request approval workflow gives you control before money is spent, while remaining nearly invisible to travelers who follow the rules. Approval becomes your program’s control point when three things happen: your in-policy requests clear automatically, only genuine exceptions reach a reviewer, and your caps flex with real market prices.

Start with the request form, keep your chain limited to necessary approvers, and protect your travel policy compliance by watching cycle time weekly. If requests routinely stall, the workflow is telling you where to look next.