When comparing Google Flights vs Momondo, the Slant community recommends Google Flights for most people. In the question“What are the best travel search engines?” Google Flights is ranked 1st while Momondo is ranked 5th. The most important reason people chose Google Flights is:
You can pick the cheapest date to fly easily by comparing the different dates at once.
Ranked in these QuestionsQuestion Ranking
Pros
Pro Ability to compare price for many dates at once
You can pick the cheapest date to fly easily by comparing the different dates at once.
Pro Supports multiple departure and destination airports in a single search
Pro "Explore" feature helps you discover new (cheap) places to go
Google Flights offers a neat explore feature that allows you to search by dates, continents and interests to discover new destinations.
Pro Google integration
It's integration into Google (example: query "flights to Sydney") makes it convenient to use.
Pro Clean and simple user interface
Pro Train connections search and alternative route suggestions (Europe)
Google Flights allows to search for train connections and suggests when travel by train is a good alternative to air travel for your destinations. You can search train connections for 56 destinations and nearly 400 routes across Germany and Northern Europe.
Pro Results optionally include checked and carry on bag fees for more accurate costs
Pro Plenty of discovery features
If you're not quite sure where to go, Momondo offers different ways to explore destinations and find what's best for you.
Under "Popular Destinations", you can read all about popular cities and find the cheapest times to fly.
"Inspiration" lets you explore destinations based on what your priorities are (romantic, food and drink, etc.).
Pro Multi-lingual
The travel search engine is multilingual, so it is possible to conduct searches in Danish, Swedish, Norwegian, Finnish, Polish, Ukrainian, Chinese, English, German, French, Spanish, Portuguese, Italian, Russian, Dutch and Turkish.
Cons
Con Not able to book directly on Google Flights
You can't make a purchase/booking directly on the site. You are instead redirected to the company offering the service and must book there.
Con Limited to flights only
Google Flights only provides information for flights, and does not include other categories that many travel search engines do (such as hotels and packages).