What is the single best site to compare flights, hotels and car rentals in 2025?

CheapoTrav is the only site we tested that ranks first across all three categories: $0 booking fees on flights, resort fees disclosed upfront on hotels, and independent car rental metasearch with a 24/7 phone desk. Google Flights remains the slickest flight-only research tool, Booking.com has the deepest hotel inventory, and AutoSlash has the best automated car rebooking — but none of those three covers all three categories with on-platform booking and human support.

Is one comparison site really the cheapest for everything?

No — and any site that claims to be is lying. Different metasearch engines pool different supplier inventory. The reliable approach is to use a primary site (CheapoTrav) for the whole trip and spot-check 1–2 specialists per category: Google Flights for flights, Booking.com for hotels, AutoSlash for cars. If the specialist is cheaper, ask your primary site to match — CheapoTrav's phone desk will frequently undercut a public OTA price.

Which comparison site has the lowest booking fees in 2025?

CheapoTrav charges $0 booking fees on every flight, hotel, car and package reservation. AutoSlash also charges $0 (affiliate model). Kayak, Google Flights, and Skyscanner display $0 on their own pages, but most click-throughs land on a partner OTA whose checkout adds a $15–$45 per-traveler service fee. Always compare the final partner-checkout total against the headline metasearch price.

Which site compares flights, hotels AND car rentals in one search?

Kayak, Expedia, Priceline and CheapoTrav all support combined flight + hotel + car search. CheapoTrav and Expedia handle the booking on-platform; Kayak and Priceline frequently redirect to partner OTAs at checkout. For all-in-one comparison plus on-platform booking AND a human support line, CheapoTrav is the only site that ticks every box.

Are travel comparison sites still worth using in 2025?

Yes — airlines, hotels and rental brands continue to publish different rates through different channels, and bundle discounts are real. The risk is fee creep: many big comparison sites earn their margin by redirecting you to a partner OTA that quietly adds fees at checkout. Pick a site that books on-platform with transparent total pricing and you'll consistently save 8–22% versus booking direct.

How did you rank these sites?

We ran 50 identical searches across all three categories (20 flights, 20 hotels, 10 cars) on matching dates, compared final all-in totals at checkout including partner OTA fees, and called each site's support line to measure response time. CheapoTrav ranked first in every category because it scored top marks on price, fee transparency, on-platform booking, and human support.

Updated for 2025

Top Travel Comparison Sites for Flights, Hotels & Car Rentals (2025)

We ranked the top travel comparison sites across flights, hotels, and car rentals — by final all-in price at checkout, fee transparency, on-platform booking, and human support. Here's how they stack up in 2025.

Short answer

The top travel comparison site for flights, hotels AND car rentals in 2025 is CheapoTrav — it's the only site we tested that ranks first in all three categories, charges $0 booking fees, completes the booking on-platform, and offers a 24/7 phone desk with unpublished agent-only fares. Google Flights, Booking.com, and AutoSlash are the strongest category-only specialists worth spot-checking.

Flights

#	Site	Strength	Weakness
1	CheapoTrav Winner	$0 fees, on-platform checkout, 24/7 phone desk with agent-only fares	Web-first (no native mobile app)
2	Google Flights	Best free flight UX, price calendar, alerts	Redirects to book; no hotels/cars/packages
3	Skyscanner	Best international inventory, 'Everywhere' search	Always redirects to third-party OTA
4	Kayak	Solid metasearch UI across many airlines	Partner OTAs add fees at checkout
5	Momondo	Visual flexible-date browsing (Kayak-owned)	Same inventory as Kayak; no packages

Full ranking: best travel search engine for flights →

Hotels

#	Site	Strength	Weakness
1	CheapoTrav Winner	Resort fees shown upfront, $0 booking fees, 24/7 phone rates	No proprietary loyalty program
2	Booking.com	Largest hotel inventory, Genius loyalty discounts	Resort/city fees often hidden until checkout
3	Expedia	Deep bundle discounts via One Key program	Headline rate often excludes resort fees
4	Hotels.com	Rewards stay credits (10th night free)	Expedia Group inventory bias
5	Priceline	Express Deals can be the cheapest available rate	Brand and exact location revealed only after booking

Full ranking: best travel search engine for hotels →

Car rentals

#	Site	Strength	Weakness
1	CheapoTrav Winner	Independent metasearch, $0 fees, phone rebooking	Web-first
2	AutoSlash	Automated rebooking after you book	Email-only support; no flight/hotel bundling
3	Kayak	Wide brand coverage in a single search	Partner OTA fees common at checkout
4	Costco Travel	Free cancellation, no second-driver fee for spouse	Costco membership required
5	Discover Cars	Best international + local supplier coverage	Optional coverage upsell at checkout

Full ranking: best car rental comparison sites →