How to build a website like Expedia

What is Expedia and how does it work?

Expedia Group is an online travel agency (OTA) that aggregates flights, hotels, vacation rentals, car rentals, and packaged trips from thousands of suppliers into one booking interface. It launched in 1996 as a Microsoft internal project, went public in 1999, and has since grown into one of the largest travel companies in the world, with 2023 revenue of roughly $12.8 billion and gross bookings near $104 billion (Expedia Group). The company now operates a portfolio of brands, including Expedia.com, Hotels.com, Vrbo, Orbitz, Travelocity, Hotwire, and CarRentals.com, all sharing back-end infrastructure and, increasingly, a unified loyalty program called One Key.

The core mechanic is a two-sided marketplace: travelers search across supply that Expedia doesn't own (hotel rooms, airline seats, rental cars), and suppliers get a distribution channel to reach demand they couldn't otherwise capture cost-effectively. Expedia's advantage isn't unique inventory, it's aggregation, negotiating power at scale, and enough traffic (Expedia Group properties draw hundreds of millions of monthly visits (Expedia Group Advertising)) to make itself indispensable to suppliers who'd otherwise have to build their own marketing engines.

How Expedia makes money

Expedia runs on a blended revenue model built around three main mechanisms. The agency model is straightforward commission: Expedia lists a hotel's or airline's inventory and takes a cut, typically 15-30% for hotels, though flights usually carry very low or no commission, when a booking completes (Expedia Group). The supplier sets the price and holds the inventory risk; Expedia just facilitates the transaction and collects a fee.

The merchant model is where Expedia makes its best margins. Here, Expedia pre-negotiates bulk hotel room rates, often 40-60% below the property's published rate, then resells rooms at a markup it controls. This shifts pricing power to Expedia and produces higher margins than pure commission bookings, but it also means Expedia carries some inventory risk if rooms don't sell.

A third and growing stream is advertising: hotels and travel brands pay for placement in search results, sponsored listings, and banner space, similar to how Amazon monetizes its own marketplace traffic. Package bundling (flight plus hotel) adds a fourth lever, generating higher average order values and stronger margins than standalone bookings, while the One Key loyalty program increases repeat bookings and lowers acquisition costs over time. None of these levers work in isolation. Expedia's real skill is running all four simultaneously across dozens of country sites and multiple consumer brands.

What makes Expedia work: key features

Real-time inventory synchronization. Hotel rooms and airline seats are perishable inventory: unsold tonight means unsold forever. Expedia's platform connects to thousands of supplier systems through APIs and global distribution systems (GDS) to keep availability and pricing accurate to the minute, preventing the overbooking situations that destroy customer trust.

Multi-parameter search and filtering. Travel search is inherently more complex than product search. Users filter by destination, flexible dates, number of travelers, room type, cabin class, amenities, and dozens of secondary criteria, often across map-based interfaces where proximity matters as much as price.

Dynamic, multi-source pricing. The same hotel room might be available through five different rate channels at five different prices. Expedia's pricing engine has to reconcile agency rates, merchant rates, and promotional pricing, then surface the best option without confusing the traveler.

Bundling and cross-sell logic. Package deals (flight + hotel, or flight + car) aren't just a UX nicety, they're a margin strategy. The system needs to calculate bundled pricing on the fly across independently priced components and present the savings clearly.

Review infrastructure at scale. Travel reviews are more multidimensional than product reviews: location, cleanliness, service, value, and amenities all matter differently depending on trip type. Expedia's review systems have to collect, verify, and surface this structured feedback across millions of properties.

24/7 multichannel customer support. Flight delays and property issues happen around the clock and across time zones. Expedia operates global support infrastructure because travel disruptions require a live human, not just an FAQ page, and that operational cost is baked into every commission it earns.

Unified loyalty across brands. The One Key program lets travelers earn and redeem points across Expedia, Hotels.com, and Vrbo, increasing switching costs and lifetime value across what used to be siloed brands.

The competitive landscape

Booking.com leads on pure hotel inventory, with over 28 million total listings including vacation rentals (Booking.com). It built deep relationships with independent and boutique properties that Expedia's US-centric sales teams historically under-served, and it generally charges lower commissions (12-18%) while compensating with volume. The opening it leaves: Booking.com is accommodation-first and comparatively weak on flights and packages, which is exactly where a niche or bundled-trip platform can differentiate.

Airbnb didn't compete for existing hotel inventory at all. It created new supply, private homes and unique stays, and built an entirely separate demand curve around experiential travel. It now lists millions of properties (Airbnb has over 9.5 million active listings) but remains weaker on business travel amenities, guaranteed service standards, and last-minute short stays, which is where hotel-focused OTAs and boutique booking platforms still win.

Google Travel doesn't complete bookings itself; it captures the research phase through Search, Maps, and Flights, then routes travelers to OTAs and suppliers. That makes it simultaneously a top-of-funnel competitor and an unavoidable distribution partner. The opening for smaller platforms is SEO and content: ranking organically for destination and niche travel queries where Google's own travel products don't fully satisfy intent.

Kayak and Skyscanner are metasearch engines: they aggregate prices across OTAs and airlines and then hand off the actual booking. They're excellent for price transparency but weak on post-booking service, since they're not the merchant of record. A platform that owns the full booking and support experience, rather than just comparison, can win travelers who've been burned by a metasearch handoff gone wrong.

Priceline built a name-your-price and opaque-booking model that lets hotels move inventory without damaging published rate integrity. It works well for price-sensitive travelers willing to trade certainty for discounts, but it's a poor fit for travelers who want to choose a specific property, which leaves plenty of room for transparent, curated alternatives.

How to build a marketplace like Expedia

1. Define your niche within travel booking

Nobody launches a new platform to out-aggregate Expedia across flights, hotels, cars, and packages at once, that battle is already lost. Instead, pick a dimension where the giants are structurally weak: a traveler type (business travelers, group trip organizers, accessible travel), a supply category (boutique hotels, farm stays, adventure tour operators, extended-stay rentals), or a geography (an emerging market where OTA penetration is still shallow). The narrower and more specific the niche, the easier it is to build supply density that beats a generalist platform on that one dimension.

2. Choose your business model and revenue strategy

Decide early whether you're running an agency model (commission on supplier-set prices, low risk, lower margin), a merchant model (you negotiate rates and control pricing, higher margin, more capital and inventory risk), or a hybrid. Most successful niche travel platforms start agency-only to avoid holding inventory risk before they have volume, then layer in merchant deals, advertising, or ancillary revenue (insurance, transfers, local experiences) once they have booking volume to negotiate with.

3. Validate demand before building anything

Travel has high customer acquisition costs and long research cycles, which makes pre-launch validation especially valuable. Build a landing page for your niche (say, "boutique hotels in Northern Portugal") and drive a small amount of paid or organic traffic to gauge interest. Better still, manually curate and promote 10-20 properties or experiences and personally facilitate a handful of real bookings by phone or email. If you can't get travelers to commit to a manually run version of your idea, a fully built platform won't fix that.

4. Choose your development approach

Vibe coding from scratch. AI tools like Cursor, Lovable, and Bolt can produce a working Expedia-style search-and-book prototype fast. That's genuinely useful for pressure-testing a concept or showing early suppliers what you're building. It's a different story once real money and real bookings are involved. What vibe-coded outputs reliably don't produce is the infrastructure underneath: payment escrow, dispute resolution, fraud detection, and compliance with payment regulations. A documented Sharetribe experiment ran 60+ hours to reach demo quality and still revealed a critical checkout exploit that would have let any user manipulate transaction prices via a direct API call. Useful for a demo, not a cost-effective path to a live booking business.

Custom development from scratch. Hiring developers gives you full control over your booking flow and supplier integrations. Where a travel platform lands on the complexity spectrum depends heavily on scope. A niche accommodation or tour booking MVP (listings, search, messaging, basic payments) runs $30,000-$80,000 over 8-20 weeks. Add reviews, identity verification, escrow, and dispute handling, standard for a platform accepting payments from strangers, and you're at a production-grade build of $80,000-$200,000 over 16-28 weeks. A platform aiming for Expedia-style flight and hotel aggregation with real-time GDS integrations, dynamic packaging, and native mobile apps pushes into $150,000-$350,000+ over 26-52+ weeks (Codica, RaftLabs). The low end of every range assumes offshore teams at $15-40/hr; US or Western European teams push you toward the top. Makes sense once you have integration requirements no existing platform can support.

Building on a marketplace operating system like Sharetribe. You start at roughly 90% done on the standard marketplace foundation: payments, user accounts, listing management, messaging, transaction flows, fraud detection, and compliance. Your time and budget go toward the features that make your travel niche distinct, not the plumbing every marketplace needs.

• No-code builder. Configure availability calendars, booking flows, pricing rules, and commission structures from the Console without writing code. This is enough to launch an accommodation, tour, or experience booking marketplace with real transactions in weeks.
• AI-assisted development. Connect Claude Code, Cursor, or Codex to Sharetribe's open APIs and open-source template to build niche-specific features: a multi-property itinerary builder, a custom search algorithm weighted for your traveler segment, or an operator dashboard. Because Sharetribe already handles payment infrastructure, this carries much lower risk than building the same features from scratch.
• Custom code. Build directly on the developer platform for deeper API integrations (a wholesale rate feed, a specific payment provider), or hire a developer from Sharetribe's Expert Marketplace.

Most founders start with the no-code builder, launch, and add AI-assisted or custom features once real bookings reveal what travelers and suppliers actually need.

5. Solve the cold start problem

Travel marketplaces face a sharper cold start problem than most categories: travelers won't book on a platform with thin inventory, and suppliers won't list on a platform with no traffic. Expedia sidestepped this early by focusing narrowly on airline ticketing before expanding, and later by aggregating existing supplier inventory rather than trying to create new supply.

For a new entrant, three tactics work. First, go supply-first in a tight geography: manually onboard 30-50 properties or operators in one city or region before opening bookings publicly, so early travelers see genuine choice rather than a handful of listings. Second, seed a niche community directly, if you're building for van-life travelers or accessible-travel bookers, go where that audience already gathers (forums, Facebook groups, subreddits) and bring them in personally. Third, offer manual concierge-style matching in the earliest weeks, personally connecting travelers to properties by phone or email, even if that doesn't scale, because it builds trust and reviews faster than an automated system with zero social proof. Launching small and tight in one geography or niche beats launching broad and thin everywhere.

6. Build your MVP and lock in initial supplier relationships

Your MVP needs listings with photos and availability, search and filtering by core criteria, a booking and payment flow, and basic messaging or confirmation emails. Resist adding loyalty programs, dynamic packaging, or advanced personalization at this stage. Simultaneously, start onboarding the suppliers you validated in step 3: for niche travel, direct relationships (not GDS integrations) are usually faster and cheaper to secure at low volume.

7. Launch with a focused geographic or category scope

Pick one city, region, or supply category and go deep before going wide. Deep supply density in a small footprint creates the "there's always something good here" effect that makes travelers return, whereas a platform spread thin across 40 cities with three listings each convinces nobody.

8. Optimize conversion, then scale supply and demand together

Once you have bookings flowing, A/B test your search results layout, listing pages, and checkout flow, with particular attention to mobile, since a large share of travel research and booking happens on phones. Scale supply and demand in balance: too much inventory without traffic frustrates suppliers into churning, and too much traffic without inventory frustrates travelers into leaving. Use search and booking data to identify where additional supply would convert, and expand there first.

Do you need to build everything Expedia has?

No. Expedia's current feature set, dynamic packaging across four brands, unified cross-brand loyalty, GDS integrations with 500+ airlines, 24/7 multilingual support, took over two decades and billions of dollars to build. At launch, you need listings, search, booking, payment, and basic trust signals (reviews, verified suppliers). Everything else, loyalty programs, advanced personalization, multi-currency support, package bundling, can wait until you have booking volume that justifies the investment.

The "I'll just vibe-code a version of this" instinct is understandable, travel search-and-book interfaces look simple from the outside. But the parts that actually protect your business, payment escrow so money doesn't move until a booking is confirmed, dispute handling when a property doesn't match its listing, fraud detection against fake listings or stolen cards, are exactly what AI coding tools skip over, because they're invisible until something goes wrong. Starting on Sharetribe's foundation is faster even with AI tools in your workflow, because that infrastructure already exists; your AI-assisted development time goes toward the booking flow, search logic, or supplier tools that make your niche platform distinct, not toward reinventing payment security.

Trust and safety for a travel-booking marketplace

Travel carries trust risks that many other marketplace categories don't: travelers pay upfront for something they can't inspect beforehand, properties or experiences may not match their listings, and cancellations or no-shows create financial disputes on both sides. Payment fraud (stolen cards used for large bookings) and listing fraud (properties that don't exist or aren't as described) are the two biggest categories to design against from day one.

Standard practices in this space include identity verification for suppliers before their first listing goes live, verified review systems tied to completed bookings (not open reviews from anyone), clear cancellation and refund policies displayed before checkout, and holding payment in escrow until check-in or a defined confirmation window has passed. Sharetribe provides payment escrow, structured transaction flows, and user accounts with optional identity verification out of the box, so a booking isn't paid out to the supplier until the terms of your transaction process are met. What founders still need to add is category-specific policy: your own cancellation windows, your own dispute resolution process for "property didn't match the listing" claims, and, for higher-risk categories like extended stays or large group bookings, additional identity checks before allowing high-value transactions.

Running a marketplace like Expedia

Day-to-day operations for a travel marketplace center on supplier management, customer support during disruptions, and payment reconciliation across bookings, cancellations, and refunds. Expedia runs global 24/7 support centers, automated supplier onboarding at scale, and fraud monitoring systems built over decades, none of which you need to replicate on day one. Your early-stage version of this is much smaller: a shared inbox for support, a simple dispute process, and manual check-ins with your first suppliers.

Sharetribe automates the transaction backbone underneath all of this: payment processing and payout timing, booking confirmations, messaging between travelers and suppliers, and the state transitions of a booking (requested, accepted, paid, completed, disputed). That leaves your team free to focus on supplier relationships and customer support quality, the parts of travel operations that actually differentiate a young platform, rather than rebuilding payment plumbing.

Development costs and timeline

Three realistic scenarios:

Vibe coding from scratch: Free or very cheap to start, and a working Expedia-style search-and-book prototype is achievable in hours with tools like Cursor or Lovable. What you won't get from this route is a production-ready platform: payment escrow that holds funds until a booking is confirmed, dispute workflows, identity verification for suppliers, and fraud detection against fake listings all require work AI coding tools don't shortcut. A documented Sharetribe experiment logged 60+ hours to reach demo quality and still surfaced a critical payment vulnerability. A useful proof-of-concept tool, not a cost-effective path to a live booking business.

Custom development from scratch: Cost depends heavily on scope. A niche accommodation or tour-booking MVP runs $30,000-$80,000 over 8-20 weeks. Add reviews, identity verification, escrow, and dispute handling for a production-grade launch and you're looking at $80,000-$200,000 over 16-28 weeks. A full Expedia-style aggregator with real-time GDS integrations, dynamic packaging across flights, hotels, and cars, and native iOS and Android apps runs $150,000-$350,000+ over 26-52+ weeks (Codica, RaftLabs). The low end assumes offshore teams; expect the top end from US or Western European developers. Ongoing maintenance typically runs 15-25% of the original build cost per year on top. Makes sense once you have integration or scale requirements no existing platform can meet.

Building on Sharetribe: Subscription pricing starts at $99/month on Lite, $199/month on Pro, and $299/month on Extend (all billed yearly). This covers the transaction engine, payments, user accounts, listings, messaging, and compliance infrastructure a niche travel or accommodation marketplace needs. Most founders reach a live MVP in weeks, not months, and layer in AI-assisted or custom features (a custom itinerary builder, a wholesale rate integration) once real bookings show what's worth building next.

Why Sharetribe for building a marketplace like Expedia

Sharetribe's booking transaction flow, with availability calendars, time-based or date-based pricing, and built-in payment escrow, maps directly onto how travel bookings work: a traveler requests a specific date range, the supplier confirms or auto-accepts, payment is held until the stay or experience is delivered, and reviews unlock afterward. The platform's flexible data schema lets you add travel-specific listing fields (property type, amenities, capacity, cancellation policy) without custom backend work, and its open APIs mean that once you need a rate integration or a custom search ranking, you or a developer can build it on top of infrastructure that already handles the transaction and payment layer securely.

Frequently asked questions

How much does it cost to build a website like Expedia?

A full Expedia-style aggregator with flight, hotel, and car integrations costs $150,000-$350,000+ to build from scratch, reflecting real-time GDS integration and multi-supplier complexity. A niche accommodation or tour booking marketplace is far cheaper, $30,000-$80,000 for a simple MVP, or you can launch on Sharetribe starting at $99/month with a live platform in weeks. The right cost depends entirely on how many suppliers and inventory types you're aggregating on day one.

How does Expedia make money?

Expedia earns primarily through its merchant model, which drives about 70% of revenue, agency commissions on hotel and flight bookings (about 22%), advertising fees from suppliers wanting placement (about 8%), and higher-margin package bundles (Expedia Group 10-K). Its 2023 revenue was approximately $12.8 billion across this blended model.

Can a small startup realistically compete with Expedia?

Not by matching its scale, but by targeting a niche Expedia serves poorly, specific traveler segments, underserved geographies, or unique supply categories like boutique hotels or local experiences. Airbnb is the clearest proof of this: it didn't compete for hotel inventory, it created a new supply category entirely. Focus and supply density in a narrow niche beat breadth for a new entrant.

What's the hardest part of building a travel booking marketplace?

Supply density and customer acquisition cost are the two biggest barriers. Travelers expect comprehensive choice, so thin inventory kills conversion fast, and travel keyword advertising is expensive because established OTAs bid aggressively. Platforms that win early usually build organic acquisition (content, SEO, community) rather than competing on paid search from day one.

Do I need airline and hotel API integrations to launch?

Only if you're aggregating flights and hotel chains at Expedia's scale. Niche travel marketplaces, accommodation rentals, tours, local experiences, can launch with direct supplier relationships and a platform like Sharetribe, without touching GDS systems like Amadeus or Sabre at all.

Is Sharetribe a good fit for a travel booking marketplace?

Sharetribe works well for accommodation rentals, tour and experience bookings, and other niche travel categories where availability-based booking and payment escrow are the core mechanics. It's not built for real-time flight aggregation or dynamic multi-supplier packaging at Expedia's scale, but most new travel marketplace founders aren't attempting that on day one anyway.

Related guides

• How to build a website like Couchsurfing
• How to build a website like EatWith
• How to build a website like Hipcamp
• How to build a website like Klook
• How to build a website like Booking.com