Free Flight Simulators You Can Fly Today

The best free flight simulator to try right now is GeoFS, because it runs in a web browser with nothing to install and covers the whole planet. If you want a full desktop sim with a serious flight model and no price tag at all, download FlightGear. YSFlight and DCS World cover two more niches: very old computers and free military jets.

Browser or download: the real trade-off

Sim	Type	Platforms	Free limits	Hardware bar
GeoFS	Browser, plus mobile apps	Any modern browser, iOS, Android	Ads, standard-resolution imagery	Very low
FlightGear	Download, open source	Windows, macOS, Linux	None	Low to medium
YSFlight	Download	Windows, macOS, Linux	None, but dated	Very low
DCS World	Download	Windows	Two aircraft and two maps	High

A browser sim starts in seconds and runs on a school Chromebook, but it shares the computer’s power with the browser and depends on your connection for scenery. A downloaded sim takes longer to set up, uses your graphics card directly and works offline once the scenery is cached, which matters for joystick support and frame rates.

Phones and tablets sit in between. GeoFS has iOS and Android apps that share the browser version’s world and aircraft, and the on-screen controls are fine for a short hop. For a long session, though, a laptop with a cheap USB stick gives far finer control than a touchscreen, and the larger screen makes the instruments readable.

GeoFS: the whole world in a browser tab

Open the website, pick an aircraft and a spot on the globe, and you are flying within a minute. GeoFS streams satellite imagery over a 3D terrain model and lists about 30 official aircraft plus community-built ones: light singles, airliners, gliders, helicopters and a few oddballs flown purely for fun. The free version also shows real air traffic from ADS-B data, live weather, navigation charts and a shared multiplayer world where you see other players’ airplanes.

Limits are clear. The free imagery is standard resolution; sharper aerial photos come with a paid HD subscription, and a one-day free trial lets you compare. The flight model is simple, instruments are basic, and there is no real systems depth. Keyboard and mouse controls work, and the sim also recognizes most USB joysticks through the browser.

FlightGear: a full open-source simulator

FlightGear is the serious free option. Volunteer developers have built it for decades, the source code is open, and the 2024.1 branch received its latest maintenance release, 2024.1.4, in January 2026. It runs on Windows, macOS and Linux, and its hangars hold hundreds of aircraft of very uneven quality, from detailed Cessna 172P and Boeing models to half-finished experiments.

The flight dynamics come from established engines such as JSBSim, the same library used in research and engineering projects, so handling can be surprisingly realistic in the better aircraft. Scenery downloads automatically as you fly, with worldwide terrain and airports; it looks plainer than Microsoft Flight Simulator, but buildings, roads and land cover are all there.

Expect a learning curve. The launcher has many options, aircraft must be downloaded separately, and controls need some configuration. Once set up, it supports multiplayer servers, where some players run tower and approach positions, and full joystick, yoke and pedal mapping.

YSFlight: tiny, fast and still flying

YSFlight is a one-person project by Soji Yamakawa that has been free for many years. Graphics look like the early 2000s, but it runs on almost anything, including laptops that would choke on every other entry on the list. The download includes a decent set of maps and aircraft, and a busy modding community has added many more, mostly military jets.

Its real appeal is multiplayer: community servers host dogfights, formation flying, airshows and races. The latest major release dates back to 2018, so do not expect modern weather or scenery. For a younger simmer or a friend who just wants to fly with you tonight on a basic computer, it does the job.

DCS World: two free aircraft, serious hardware

Digital Combat Simulator is free to download and includes two aircraft: the Su-25T attack jet and the TF-51D, an unarmed trainer version of the P-51 Mustang. You also get the Caucasus region and the Mariana Islands. Flying the Mustang well is a lesson in torque, P-factor and taildragger landings that many civilian sims do not teach.

The catch is hardware: 16 GB of RAM, an 8 GB graphics card and around 200 GB of storage are the published minimums. Everything beyond the two free aircraft costs money, so DCS is free to try rather than free forever.

Limits of free versions

Free sims are fun, but they skip things paid sims take for granted:

• Scenery quality: photoreal ground textures are paid in GeoFS and absent by default in FlightGear and YSFlight.
• Systems depth: only FlightGear’s best aircraft and DCS’s modules model systems in detail.
• Weather: GeoFS uses live weather; YSFlight’s options are basic.
• Support: no company to call. Forums and wikis do the work, and the quality of help is high but uneven.
• Training value: none of these count as loggable time, though that is also true of the paid sims.

The X-Plane 12 free demo is worth a mention here: it is not a free sim, but it lets you try X-Plane’s flight model and test your hardware before paying $59.99 for the full version.

A first practice flight in any of them

Free sims are excellent for learning the basic shape of a flight. A simple exercise that works in GeoFS, FlightGear or YSFlight with a light single:

1. Line up on a long runway, apply full power and lift off around 55 to 60 knots in a Cessna-type airplane.
2. Climb straight ahead at about 75 knots to 1,000 feet above the field, then turn left 90 degrees onto the crosswind leg.
3. Turn again onto downwind, level at 1,000 feet, reduce power and hold roughly 90 knots parallel to the runway.
4. Abeam the touchdown point, reduce power further, start a 500-foot-per-minute descent and slow to 70 knots.
5. Turn base, then final, and aim for 65 knots over the threshold.

Repeat that rectangle ten times and you will have practiced the same pattern a student flies in the first lessons. The numbers are approximate, but the sequence of power, attitude and trim is real.

Minimum hardware for each

• GeoFS: any computer with a recent Chrome, Edge, Firefox or Safari browser and a stable connection, or a phone or tablet with the app.
• YSFlight: practically any Windows, Mac or Linux machine made in the past fifteen years.
• FlightGear: it starts on modest machines with settings turned down, but 8 GB of RAM and a dedicated graphics card make dense scenery and detailed aircraft far more pleasant.
• DCS World: quad-core CPU, 16 GB of RAM, 8 GB discrete GPU and 200 GB of free disk space.

I started on a free sim long before I spent money on one, and the habits I built there, scanning instruments and planning a descent, carried straight over. Add a $50 to $100 joystick and any of these becomes far more precise than mouse and keyboard; that is also the first step of a sim setup you can grow later.

I still keep GeoFS bookmarked for one reason: it opens in seconds on any computer, so it is my go-to when a friend asks what flying a traffic pattern looks like.

Related reading: Can a Flight Simulator Help You Learn to Fly? · How to Become a Flight Attendant: Requirements and Pay