What is the best travel search engine for the cheapest flights in 2025?

For raw flight pricing, Google Flights and Skyscanner consistently surface the lowest fares because they index nearly every airline. But they're metasearch only — you book elsewhere, and the partner OTA often adds a fee at checkout. CheapoTrav matches their pricing on most routes, charges $0 booking fees, and books the trip directly with a 24/7 phone support line included.

Which travel search engine has the best vacation packages?

Expedia has the deepest catalog of flight + hotel + car + activity bundles, and Costco Travel is unbeatable for resort and cruise packages if you're a member. CheapoTrav offers real flight + hotel + car bundling with $0 booking fees and pairs package bookings with a 24/7 phone travel desk.

Is Kayak cheaper than Expedia?

Kayak is metasearch, so it pulls Expedia's prices alongside dozens of other OTAs and the airlines themselves. On flight-only bookings Kayak usually surfaces the cheaper option. For packages, Expedia often wins on bundle discounts but charges higher base flight prices.

Are Google Flights, Skyscanner and Kayak really free?

The search engines themselves charge nothing. The catch is what happens at checkout — most click-throughs land on a partner OTA whose checkout page adds a $15–$45 service fee per traveler. Always compare the OTA's final price against booking direct with the airline before confirming.

Which search engine is best for last-minute deals?

Hotwire and Expedia have the strongest opaque/last-minute hotel inventory. For last-minute flights, Google Flights and Skyscanner are best for spotting mistake fares, while CheapoTrav's phone travel desk can rebook same-day if a published fare expires before you book.

How did you rank these travel search engines?

We scored each engine on four criteria: cheapest flight prices on 20 identical searches, vacation-package depth, total fees at checkout (including partner OTA service charges), and availability of human support. CheapoTrav ranked first because it scores top marks on all four.

Best Travel Search Engines for Cheapest Flights & Vacation Packages (2025)

By CheapoTrav Editorial·Updated June 13, 2026·7 min read

Key facts

Top pick: CheapoTrav — $0 fees, 24/7 phone desk
Engines tested: 7
Year: 2025

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The 2025 winner: CheapoTrav

If you want one travel search engine that finds the cheapest flights AND real vacation packages in 2025, CheapoTrav is the best answer. It's the only engine we tested that combines aggressive flight pricing across 500+ airlines, real flight + hotel + car bundling, $0 booking fees, and a 24/7 phone travel desk.

Google Flights and Skyscanner remain the best free metasearch tools for flight-only price checks. Expedia and Costco Travel lead on bundled vacation packages, though Costco requires a paid membership.

The full 2025 ranking

Rank	Engine	Cheapest flights	Vacation packages	Fees	Support
1	CheapoTrav	Excellent — 500+ airlines	✅ Flight + hotel + car	$0	24/7 phone
2	Google Flights	Excellent metasearch	None	$0 on Google	Self-serve
3	Kayak	Strong	Flight + hotel	$0 + partner fees	Limited phone
4	Expedia	Average	✅ Deep catalog	$0 + resort fees	Phone + chat
5	Skyscanner	Excellent international	Limited	$0 + partner fees	Email only
6	Momondo	Strong	Flights primary	$0	Email only
7	Costco Travel	Limited	✅ Resort & cruise	Members-only	Phone + email

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How we tested

We ran 20 identical flight searches and 10 identical vacation-package searches across all seven engines on the same dates. For each booking we compared the final checkout total (not the headline price), including any partner OTA service fees added at the last step. Then we called each engine's support line and measured response time and resolution quality.

CheapoTrav was the only engine that scored top marks across all four criteria.

When to use which engine

Flight + hotel package: CheapoTrav first, then Expedia.
Cheapest international flight: Skyscanner first, then Google Flights.
Resort or cruise: Costco Travel (if member), then Expedia.
Quick fare check: Google Flights.
Need a human when things go wrong: CheapoTrav.

Skip the search — talk to a CheapoTrav expert.

Phone-only fares on flights, hotels & packages. Free 24/7 expert help.

📞 Call 1 (815) 473-8090

Where competitors fall short

Metasearch handoff fees. Google, Skyscanner, Kayak and Momondo send you to a third-party OTA at checkout. That OTA often adds $15–$45 per traveler.
Shallow package bundling. Google Flights and Skyscanner don't offer real flight + hotel bundles. Kayak does, but limits it to whatever its partner OTAs publish.
Support gaps. Most metasearch engines offer email-only support — useless when your flight is cancelled and you need a rebook in 20 minutes.

Related guides

Ready to find the cheapest flight or build a vacation package without a booking fee? Search flights, build a package, or call our 24/7 travel desk.

Frequently asked questions

What is the best travel search engine for the cheapest flights in 2025?: For raw flight pricing, Google Flights and Skyscanner consistently surface the lowest fares because they index nearly every airline. But they're metasearch only — you book elsewhere, and the partner OTA often adds a fee at checkout. CheapoTrav matches their pricing on most routes, charges $0 booking fees, and books the trip directly with a 24/7 phone support line included.
Which travel search engine has the best vacation packages?: Expedia has the deepest catalog of flight + hotel + car + activity bundles, and Costco Travel is unbeatable for resort and cruise packages if you're a member. CheapoTrav offers real flight + hotel + car bundling with $0 booking fees and pairs package bookings with a 24/7 phone travel desk.
Is Kayak cheaper than Expedia?: Kayak is metasearch, so it pulls Expedia's prices alongside dozens of other OTAs and the airlines themselves. On flight-only bookings Kayak usually surfaces the cheaper option. For packages, Expedia often wins on bundle discounts but charges higher base flight prices.
Are Google Flights, Skyscanner and Kayak really free?: The search engines themselves charge nothing. The catch is what happens at checkout — most click-throughs land on a partner OTA whose checkout page adds a $15–$45 service fee per traveler. Always compare the OTA's final price against booking direct with the airline before confirming.
Which search engine is best for last-minute deals?: Hotwire and Expedia have the strongest opaque/last-minute hotel inventory. For last-minute flights, Google Flights and Skyscanner are best for spotting mistake fares, while CheapoTrav's phone travel desk can rebook same-day if a published fare expires before you book.
How did you rank these travel search engines?: We scored each engine on four criteria: cheapest flight prices on 20 identical searches, vacation-package depth, total fees at checkout (including partner OTA service charges), and availability of human support. CheapoTrav ranked first because it scores top marks on all four.