About the Game
Airline Founder is a data-driven single-player airline management simulation. Begin with scenarios such as Tokyo, Singapore, or Paris, choose your strategy, and build an airline around full-service operations, low-cost scale, regional networks, or long-haul premium routes.
Study the world map, compare city demand, airport capacity, runway limits, slot pressure, and real outbound route records. Decide where to fly, which aircraft to assign, how often to operate, and whether your passengers will pay for lower fares, better service, or a more premium cabin.
Running an airline is more than opening routes. Purchase or lease aircraft, search the used market for affordable capacity, maintain fleet health, reconfigure cabins, manage catering, expand into new airports, and develop hub-and-spoke operations while keeping cash, debt, profit, and reputation under control.
The market keeps moving. Fuel shocks, regional travel booms, airport fee changes, maintenance directives, and demand downturns can all reshape your plans. Passengers, spotters, employees, and investors react through a virtual social media system, discussing your fares, punctuality, connections, and safety record. Build a stable business, prepare for an IPO, and watch your share price respond to revenue, profit, leverage, reputation, and major events.
Key Features
A global airport, city, and route network built from public data sources
Around 8,000 airports, 7,560 cities, and 36,000+ seed routes
Multiple starting scenarios and airline strategies
Aircraft purchasing, leasing, used aircraft market, and maintenance
Fare strategy, service tiers, catering, cabin layouts, and route frequency
Hub networks, airport slots, curfews, and noise constraints
Monthly reports, cash flow, debt, reputation, and IPO systems
Market news, fuel volatility, safety risk, and virtual social media feedback
Screenshots
9 images
Version Information
Steam Patch Notes
Official update history
It’s been two days since the Early Access launch. Thank you for all your feedback! In response, I’ve released update 0.5.1, which addresses many of the issues you’ve reported.
Saves and Stability
Fixed an issue where historical routes referencing aircraft that had been sold, returned to their lessor, or removed could prevent saving.
Fixed an issue where incorrect file timestamps could cause a newly created autosave to be deleted during cleanup.
Fixed an issue where loading or migrating a renamed save copy could overwrite another save.
Fixed an issue where errors in UI or achievement notifications could report a save as failed even though it had been saved successfully.
Multiplayer and Steam
Fixed issues that could prevent players from entering the game after returning to the main menu and rejoining, or accepting repeated invitations.
Fixed an issue where an outdated multiplayer state could overwrite a guest’s aircraft purchases, leases, route launches, return routes, or additional aircraft assignments.
Fixed multiplayer used-aircraft purchases not correctly using the selected listing’s price, age, and condition.
Improved error messages for certain Steam initialization failures.
Route Planning and Scheduling
Outstations already served by active routes can now serve as departure points for revenue-generating return flights and onward point-to-point services.
Added options to plan or view a return route, making it easier to arrange return flights for existing one-way routes.
New routes default to round-trip operation using the same aircraft in both directions. One-way operation remains available.
Added a toggle to link frequencies between paired outbound and return routes.
Fixed automatic frequency reductions incorrectly assessing round-trip aircraft rotations and cutting more flights than necessary.
Added support for assigning additional aircraft to an existing route, with one-way or round-trip options, frequency settings, and financial forecasts.
Multiple aircraft serving the same market share passenger demand, while each aircraft is checked separately against scheduling and operating constraints.
Fixed duplicate capacity in the same market potentially being counted more than once toward network size, profitable markets, and related objectives.
Route distance is now displayed as soon as both airports are selected, even without an aircraft capable of flying the route.
Added an “Only airports within range” filter to the destination selector. Results update when the departure airport or selected aircraft changes.
Fixed newly purchased aircraft not appearing promptly in the route planner’s aircraft list and aircraft-type filters.
Fixed different aircraft of the same model incorrectly sharing forecast results.
Candidate route profit and profit margin now use different colors for positive and negative values.
Economy and Balance
New leases are charged at the contracted amount, removing the blanket cap based on a percentage of the aircraft’s purchase price.
Fixed aircraft potentially aging more than once when assigned to multiple routes.
Adjusted local passenger demand between airports so that a large city no longer overwhelms the market constraints of a small destination.
Removed the unconditional baseline of 1,600 passengers per month for very small markets, and updated route forecasts and frequency recommendations accordingly.
Adjusted long-term AI airline valuations to reduce continuous compound growth in market capitalization without corresponding growth in operations.
Fixed AI reputation attacks deducting company reputation repeatedly based on the number of routes.
Fixed positive or negative events potentially changing reputation in the wrong direction near its upper or lower limits.
Public service subsidies now assess actual passenger flights operated, fixing cases where suspended services or merely scheduled flights counted toward requirements.
Fixed the flight-record display limit affecting public service contract fulfillment statistics.
Reduced the Grand Caravan EX’s base purchase price from $6.3 million to $3.3 million, and its base monthly rate for new leases from $56,000 to $30,000.
Fleet, Catering, and Objectives
Fixed aircraft purchases potentially reusing tail numbers after aircraft sales, and corrected duplicate tail numbers in existing saves.
Standardized the display of custom aircraft names and tail numbers, and prevented duplicate custom names within the current fleet.
The fleet page now always displays flight hours logged this month, scheduled hours, remaining scheduling capacity, and utilization.
Remaining scheduling capacity is calculated from the full month’s schedule, including positioning flights. Aircraft rotation capacity is now shown near the frequency controls.
Fixed applying or refreshing base catering contracts overwriting manually configured meals, service modes, and meal rotations for individual cabin classes.
Changing catering suppliers now preserves selected meals that remain available, along with each cabin class’s service mode.
Fixed some explicitly selected cabin catering settings being treated as defaults and overwritten after saving and loading.
Corrected five catering package image assignments.
Reduced the Chapter 14 hiring objective from 35 employees to 32 to match the hiring cap, while preserving its reward and reward-claim status.
Airports, Cargo, and Management Guides
Adjusted airport base investment costs.
Slot-tier progression now counts bases that are actually in operation. Purchasing an unused base no longer directly advances progression.
Cargo offers, contracts, and signing confirmations now show baseline monthly demand, contract duration, and where that demand applies.
Improved explanations of cargo contract fulfillment statistics and demand multipliers.
Added glossary explanations for corporate groups and subsidiaries, restructuring, ownership stakes, and synergy credits.
Performance, Interface, and Controls
Optimized initialization and preloading in sandboxes with all airports enabled, reducing long pauses near the end of loading.
Reduced redundant airport state updates, slot report calculations, and sandbox configuration file reads.
Optimized candidate scoring and sorting for public service contracts during month-end processing, reducing pauses in large sandboxes.
Route recommendations and filtering now consistently spread calculations across frames and cancel outdated requests when filters change.
Optimized UI refreshes, aircraft image reuse, and calculations for hidden forecasts when changing route endpoints.
Fixed sandbox headquarters airports being reset when switching aircraft catalogs or reopening the editor.
Fixed invalid frame-rate settings causing the actual frame rate to differ from the displayed setting.
Added Space to pause or resume, and 1, 2, and 3 on both the main keyboard and numeric keypad to change game speed.
Adjusted navigation input for mouse-and-keyboard interfaces to prevent shared controller axes from causing unintended selection changes and scrolling.
The new-aircraft list now preserves its scroll position when refreshed due to price or finance staff efficiency changes.
Fixed airport selection controls repeatedly firing toggle events without a value change, causing unnecessary list rebuilds and layout conflicts.
Fixed wrapping, word breaks, and excessively small text in some German labels at low resolutions.
Languages
Added Traditional Chinese support.
Notes for Existing Saves
Existing one-way routes will not automatically gain return services. Outbound and return routes in older saves retain independent frequencies by default; frequency linking can be enabled manually.
Existing leases are migrated under compatibility rules without recalculating historical financial results. Recorded Grand Caravan EX purchase costs and the accounting basis of existing contracts are preserved.
Existing airport bases and previously earned slot tiers are retained. Base price adjustments do not provide retroactive refunds.
Demand and valuation adjustments will affect future forecasts, revenue, and stock prices in existing saves.
Also fixed several other issues that may not have been mentioned above.
Update Notes:
Added a mission system.
Added Brazilian Portuguese.
Optimized the economy system for small aircraft.
Improved and fixed music volume and sound effects.
Fixed incorrect information for some airports.
Added support for importing external background music.
Fixed several bugs.
Fixed an issue where the 3D globe view would reset to the Gulf of Guinea after switching pages.
Fixed an issue that prevented the Demand, Slot, Rivals, and Profit strategic layers from appearing on the 3D globe.
Added the Airline Slot Tier system. As your airline expands, its monthly slot allocations increase across airports, while each airport’s own ceiling still applies.
Improved several UI screens and layouts.
Fixed several known issues.
Update Notes:
Improved the management system across different difficulty levels.
Improved the tutorial.
Made route planning more convenient.
Fixed some incorrect airport names and population data.
Improved the save system.
Optimized the font sizes of some text elements.
Current Release
Build 25226122
Uploaded Sep 11, 2026
System Requirements
How to Install
AirlineFounder.exe to play
Troubleshooting tips
• Run Redist/_CommonRedist installers if game won't start
• Add folder to Windows Defender exclusions
• Run as administrator
Download
Direct link available
Needed when extracting (WinRAR / 7-Zip) — not a site login.
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Download Airline Founder for PC with a direct link or via torrent. Get the full version of Airline Founder for free. Airline Founder is a Simulation released by Nerowan.