OpenFlights (The image is from 2014 so some routes are missing)
This tutorial will teach you how to find routes to fly, since I have recently seen a lot of topics asking routes to fly on the IFC. ___________________________________________________________________________ ___________________________________________________________________________
Infinite Flight Resources
Route Databases on the IFC
The first way to find routes to fly are the route databases on the IFC, which are often very complete with routes to fly with a specific plane and livery!
These are the ones I could find, but there may be more!
Route suggestions on the Infinite Flight Blog
Another way to find routes to fly is looking at the “top 5 routes” topics in the Infinite Flight Blog!
FlightRadar24 is a flight tracking app. To find a route, you just select a plane and it shows the route which it is doing.
FlightMapper is a website in which you select places in the map and it detects real life routes close to those places. It contains almost all commercial flights worldwide.
FlightConnections is a website that shows all commercial routes worldwide, and you can filter the routes shown with airport and airline, to find the best route for you.
FlightsFrom is a website that, just like FlightConnections, shows all commercial routes worldwide from a specific airport after filtering it. Suggested by @GameBoy_KIRB.
Google Flights is a website made to book flights, but it also has a feature that you only choose the departure city and the website shows all commercial routes worldwide from it. It also shows the prices, which are unnecessary for Infinite Flight. Suggested by @TheAviationGallery .
FlightAware is a website that, just like FlightRadar24, is a flight tracking app, where you can select planes and it shows their routes. Suggested by @Stellar_G.
Antipodes Map is a website that shows the antipodes (location on the opposite side of the Earth). It is useful for planning 20 hour or greater flights. Suggested by @Stellar_G.
FPLtoIF is a website containing many things related to Infinite Flight, including server stats, and many other things. What helps to find a route to fly in FPLtoIF is it’s Random Flight Generator, where you can choose the duration of the flight and aircraft model, and it gives you a random route.
@GBKarp I know this is weird, but when I want to try to fly a 20h+ route, I use https://www.antipodesmap.com/ to find the antipode of my destination so i can do the longest route actually possible. (Note most antipodes are in the sea)