Three sizes of travel site: a content and inquiry site (pages, forms, a calendar of departures, no live booking); a booking site (live availability, booking, payment, confirmations, a back office for one operator's own inventory); and a portal (search and booking across suppliers through their interfaces, with rates, availability, payments and reconciliation). Each step up multiplies the hours.
To estimate: pick the size, list the features and the supplier connections, estimate hours per feature with a developer, multiply by the team's loaded hourly cost, add payment and compliance work, add a contingency, and budget a yearly share for maintenance.
Driver 1: Search and display
A content site displays what you sell: tours, properties, destinations, departures, prices and policies, with filters and a map. Add live search across dates, party size and options, and the hours rise, because the search must read availability and rates from somewhere in real time and render results fast on a phone. The design and content work is the same at every size; the engineering work starts here.
Driver 2: Booking, availability and confirmations
Taking a booking means holding inventory for the time it takes to pay, confirming by email and text, issuing vouchers or tickets, handling changes and cancellations under your terms, and giving your team a back office to see and manage it all. For a single operator with its own inventory this is a defined build; for multiple suppliers it depends on each supplier's rules. Every edge case (a departure that sells out mid-payment, a partial refund, a group change) is hours.
Driver 3: Supplier connections
A portal or a multi-supplier site connects to hotels, airlines, tour operators, car rental and activity suppliers through their interfaces or through aggregators and channel managers. Each connection is a project: the supplier's documentation, its test environment, its authentication, its rate and availability model, its booking and cancellation flows, its certification steps, and its changes over time. The number and kind of connections is the largest single variable in travel website development cost, and the one most often underestimated. Our API integration page covers how we scope and build them.
Driver 4: Payments, PCI DSS and the total price
Taking cards brings the Payment Card Industry Data Security Standard into scope. The PCI Security Standards Council describes PCI DSS as developed to encourage and strengthen payment card account data security, providing a baseline of technical and operational requirements designed to protect payment account data, and applying to entities that store, process or transmit cardholder data or sensitive authentication data. A hosted payment page or a provider's embedded fields keeps most of that scope with the payment provider; building your own card form puts it on you. Payment providers charge a percentage plus a fixed amount per transaction, with more for international cards and currency conversion, as their current pricing pages set out; read the one you will use, because the fees shape the margin on every booking.
The price itself is regulated. The Federal Trade Commission's Junk Fees Rule, announced on 17 December 2024, requires up-front disclosure of the total price including fees for short-term lodging and live-event tickets in the USA, and the Competition Bureau treats a price made unattainable by mandatory fees as drip pricing under Canada's Competition Act. Design the booking path so the first price shown is the total price including mandatory fees, with taxes stated as they apply; retrofitting it later costs more than building it in. General information, not legal advice; your counsel has the last word.
Driver 5: Content, languages and currencies
Travel sites are content-heavy: destination pages, itineraries, photography, policies, and often several languages and currencies. Each language multiplies the content work and adds engineering for translation workflow, date and number formats and search; each currency adds rate conversion rules and payment settlement questions. Decide the launch languages and currencies before the estimate, and add the rest later.
What the hours cost, from public data
The U.S. Bureau of Labor Statistics' Occupational Outlook Handbook puts the median annual wage for software developers at $135,980 and for software quality assurance analysts and testers at $104,300 in May 2025. Dividing the developer median by 2,080 working hours gives about $65 an hour before benefits, by our arithmetic, and the BLS's Employer Costs for Employee Compensation release for June 2026 puts private industry benefits at 30.0 percent of employer costs, so a loaded in-house developer hour is about $93 at the median. In Canada, the Government of Canada's Job Bank puts the median wage for software developers at $48.08 an hour. A provider's rate sits above the wage because it carries overhead, management, tools and margin, and it falls where the team is located; we build with a delivery team in India and publish no rates, because scope decides them. Whatever the rate, compare quotes on hours and on who does the work. Our guide to software developer hourly rates goes further, and our guide to in-house versus outsourced development covers the choice of team.
The team
A booking site or portal needs a product lead, a designer who has built booking flows, front-end and back-end developers, an integration developer for each kind of supplier connection, a QA tester with a payments brief, a DevOps specialist for hosting, monitoring and the audit trail, and access to counsel on the pricing rules and terms. Seniority and location set the hourly cost; the mix sets the hours. On an integration-heavy build a smaller senior team usually costs less in total than a larger junior one, because rework in supplier connections is where travel builds lose money.
Speed, because travelers book on phones
Google's Core Web Vitals targets apply at the 75th percentile of page loads: a Largest Contentful Paint of 2.5 seconds or less, an Interaction to Next Paint under 200 milliseconds and a Cumulative Layout Shift under 0.1. Travel sites fail them with large photography and slow search results. Budget the engineering to compress, cache and render search fast; a slow booking path loses the traveler who already chose you.
After launch, which is not small
Supplier interfaces change, payment providers change, security patches arrive, content and seasons turn over, and travelers need support. Budget a yearly share of the build cost and write the maintenance scope into the contract. The people who sell travel are not cheap either: the U.S. Bureau of Labor Statistics puts the median annual wage for travel agents at $50,160 in May 2025, which is why a booking path that answers the common questions and books without a call pays for itself in staff time as well as in bookings.
How to get a price you can trust
Six steps:
If you want it scoped with you
PromotEdge International is an international strategy, technology, marketing and design company, and our delivery team is in India. Our web application development and API integration pages explain how we plan, build, connect, test and support booking sites and portals, and our hospitality and tourism industry page list the sectors we work with. We quote prices only against a written scope, name no payment provider or supplier as a partner, and name no travel client here. Our guide to vacation rental marketing strategy covers what a direct booking site is for. This guide is general information, not legal advice; the rules of your country, state and province apply, and your counsel has the last word.
Facts we rely on: see our company facts for what we state about ourselves and where each fact comes from.