Ghost Booking

What is a Ghost Booking?

Ghost booking is a travel industry term for a reservation that appears valid in a system but was never genuinely intended to result in travel. In the Global Distribution System (GDS) context, it refers to a passive segment with status codes like GK, GL, or GN that exists for pricing or tracking purposes only and is never sent to the airline or hotel. In the expense fraud context, it describes a fictitious booking an employee creates or claims reimbursement for despite never traveling.

The term also applies in hospitality, where travelers speculatively hold multiple hotel rooms while waiting for visa approvals or price changes, then fail to cancel the ones they don't need. For hotels, these phantom reservations block sellable inventory and create revenue loss when the "guest" never arrives.

Three Types of Ghost Bookings in Corporate Travel

Understanding which type of ghost booking you're dealing with determines the right response. Each has different causes, different risks, and different prevention methods.

GDS Passive Segments

Travel management companies and agencies create passive bookings in systems like Amadeus, Sabre, or Travelport for informational purposes. These segments track pricing quotes, store fare comparisons, or hold itinerary data without sending a request to the service provider. They can't be ticketed and don't consume airline or hotel inventory. GDS agreements typically classify them alongside other non-productive bookings that don't count toward volume incentives.

Fraudulent Ghost Bookings

This is the most financially damaging form. An employee fabricates a travel reservation, submits documentation (a confirmation email, a fake itinerary, or an AI-generated receipt) as part of an expense report, and claims reimbursement for a trip that never happened. Common tactics include booking a refundable flight, obtaining the confirmation, canceling the ticket, then submitting the original itinerary for reimbursement. Alternatively, some employees book at a lower fare but submit doctored documentation showing a higher price.

Speculative Hospitality Bookings

Business travelers sometimes hold rooms at multiple hotels while plans remain uncertain. When they don't cancel unused reservations, those ghost bookings become no-shows. For hotels, this distorts demand forecasting and leaves rooms empty during sell-out periods. For companies, it can trigger no-show fees on corporate travel policy violations.

How Ghost Bookings Enable Expense Fraud

Ghost booking fraud thrives in the gap between booking and payment verification. When these two events happen in different systems, or when neither system talks to the other, an employee can fabricate the booking side and claim reimbursement on the payment side without anyone noticing the mismatch.

The ACFE's 2026 Report to the Nations found that expense reimbursement schemes carry a median loss of $104,000 per case and typically persist for 18 months before detection [1]. Ghost bookings represent one pathway within this broader category, specifically targeting the difficulty of verifying whether travel actually occurred.

The emergence of generative AI has accelerated this problem. As Skift reported in late 2025, employees can now fabricate near-perfect itineraries and booking confirmations in seconds using consumer image generators [2]. Traditional manual audits catch these fabrications at a declining rate because the documents pass visual inspection. Detection now requires metadata analysis, arithmetic verification, and cross-referencing claimed bookings against actual corporate card charges. Platforms that detect expense fraud using AI analyze file properties, pixel patterns, and merchant database records to identify synthetic documents before they reach a manager's desk.

How to Detect and Prevent Ghost Bookings

Prevention strategies differ by ghost booking type, but they share a common principle: close the gap between reservation data and payment data.

Mandate centralized booking channels. When all travel is booked through a single approved platform, every reservation generates a verifiable record that links directly to the corporate card transaction. Fabricating a ghost booking becomes structurally difficult because there's no legitimate confirmation to copy or alter.

Cross-reference bookings with card data. The strongest detection method matches submitted travel documentation against actual card charges. If an employee claims a $600 flight but no corresponding charge appears on the corporate card feed, the system flags the discrepancy immediately. This is the core logic behind expense report fraud detection.

Use AI-powered receipt forensics. Modern expense platforms analyze document metadata, detect compression artifacts from image manipulation, verify arithmetic consistency across line items, and match merchant details against known databases. These checks happen in milliseconds and catch fabrications that human reviewers would miss.

Implement real-time policy enforcement. Rather than auditing after reimbursement, enforce checks at the point of submission. Navan validates receipts and booking confirmations against corporate card transactions in real time, preventing ghost bookings from entering the approval pipeline.

Set no-show monitoring rules. For the hospitality variant, track reservation-to-check-in ratios. Repeated no-shows by the same traveler or department signal either speculative booking habits or potential fraud, both of which warrant investigation.

The Financial Impact of Ghost Booking Fraud

Ghost bookings rarely occur in isolation. Employees who fabricate one trip often repeat the pattern, submitting multiple fictitious reservations over months or years. The ACFE found that the median fraud case lasts 12 months before detection, but expense reimbursement schemes specifically persist for 18 months [1]. That extended timeline means a single ghost booking fraudster can accumulate tens of thousands in false claims before anyone investigates.

The damage extends beyond direct financial loss. Ghost booking fraud distorts travel budget forecasts, inflates per-employee travel costs in reporting, and can skew supplier volume commitments. When a company negotiates hotel rates based on projected room nights, ghost bookings in the data corrupt the baseline, potentially leading to unfavorable contract terms.

Companies without mandatory corporate card use face the highest exposure. When employees pay out of pocket and request reimbursement, the only verification comes from submitted documents. Without a card transaction to match against, finance teams must rely on the legitimacy of a confirmation email or receipt that may be fabricated. Mandating corporate card payments through an integrated platform like Navan Expense eliminates this vulnerability by creating an independent transaction record for every legitimate booking.

Related Terms

• Ghost Card: A virtual card number assigned to a department rather than an individual, used for centralized vendor payments without physical plastic.
• Expense Reconciliation: The process of matching corporate card transactions to receipts and accounting records during month-end close.
• Corporate Card: A company-issued payment card assigned to an individual employee for business purchases and travel expenses.
• Virtual Card: A single-use or limited-use digital card number generated for controlled, traceable transactions.

Sources

[1] ACFE, "Occupational Fraud 2026: A Report to the Nations," 2026. https://www.acfe.com/acfe-insights-blog/blog-detail?s=key-findings-report-to-the-nations-2026

[2] Skift, "Business Travel Faces a Deluge of AI-Generated Expense Fraud," November 2025. https://skift.com/2025/11/26/business-travel-faces-a-deluge-of-ai-generated-expense-fraud/