FlightGear
X-Plane
Tom Clancy’s H.A.W.X 2
Digital Combat Simulator
Birds of Steel
Air Combat
Ace Combat: Assault Horizon
Microsoft Flight Simulator X
Skyscanner
KAYAK
Expedia
Momondo
Google Flights
Kiwi.com
Booking.com
Tripadvisor
The FlightGear flight simulator project is an open-source, multi-platform, cooperative flight simulator development project. It also simulates space flight in Earth's orbit.
FlightGear's flight dynamics engine (JSBSim) is used in a 2015 NASA benchmark to judge new simulation code to the standards of the space industry. FlightGear is used professionally for research and development, as well as non-professionally.
Screenshots: link
Information: https://en.wikipedia.org/wiki/FlightGear https://www.flightgear.org/category/tours/ https://www.flightsim.com/vbfs/tags.php?tag=flightgear (multi-page articles) FlightGear wiki
As of 2020 there are over 700 aircraft and spacecraft projects available with 1 click download and install from the sim's launcher, more are available at 3rd party hangars and github repositories for different craft projects.
FlightGear 2020.3.8 and later has automatically downloaded 3d models of buildings, roads, cities etc. , based on Open StreetMap (OSM) data and automatic generation, for the whole world.
Platforms: Windows, macOS, Linux, Raspberry Pi, other OSes
FlightGearBased on our record, Skyscanner should be more popular than FlightGear. It has been mentiond 2 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Check out https://flightgear.org or https://geo-fs.com. These are completely free to use. Source: 5 months ago
I use https://skyscanner.com/ I like the less invasive interface and prices are good. - Source: Hacker News / 10 months ago
Agree with all of that. Though with flights, you can also optimize a lot if you have enough lead time: I recommend https://skyscanner.com/ Trains are nice if you need to transport anything of volume, if you stay longer than a day or two so you can amortize the travel time, if you have lots of run-up time, and probably cheaper if you travel a lot. They're definitely competitive, it's just not a slamdunk, and planes... - Source: Hacker News / about 2 years ago
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KAYAK - KAYAK is a travel search engine that searches hundreds of other travel sites at once. Our helpful tools & features find you the information you need to make the right decisions on flights, hotels, rental cars and vacation packages.
Tom Clancy’s H.A.W.X 2 - Tom Clancy’s H.
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Digital Combat Simulator - Digital Combat Simulator is a Free-to-play, Single and Multiplayer Combat Flight Simulation developed by Eagle Dynamics and published by The Fighter Collection.
Momondo - Find cheap flights with Momondo.