As of today, it is well known that the western-most railway station in India is Varvala (long 68.97E) and the western-most terminus is Okha (69.07E)
The western-most junction was thought to be Kanalus (69.90E) but it is actually Wansjaliya (69.86E), which means about 4 km between the lines of longitude.
However, the western-most junction in the past was Khambaliya, which had a branch to the port of Salaya until the 1970s. Its longitude is 69.66E
The railway line up to Naliya (68.84E) has been closed for conversion to broad gauge for several years. This work is now progressing from Bhuj and may be completed in 2021. It is proposed to extend this line to Vayor (68.69E) which is north-west of Naliya.
So Varvala and Okha will lose their titles when the trains start running to Naliya.
The western-most airport with regular commercial flights is Bhuj (69.21E). While Bhuj has an IAF base, the military airport furthest west is the Naliya air base (near Naliya Cantt station) which is at 68.87E. It is known that the IAF has a helipad at Koteshwar on the coast at 68.53E. Naliya has fighter aircraft, and their Mig-21s shot down a Pakistani recconaissance aircraft close to the border in 1999.
Bhuj airport’s competitor is Porbandar at 69.64E. It includes enclaves of the Navy as well as the Coast Guard who also fly from there.
In due course the railway may reach Koteshwar. That is quite close to the western-most point of India, which is not as ill-defined as the northern-most point. This point on the mainland is 68.48E, while the western-most village appears to be Guhar Moti at 68.49E
You can amuse yourself with finding these places on this map link: