Travel
There are many options to fly to Bogota, but our preferred route is usually KLM - Dub to Amsterdam/Paris then Bogota. This will be about 14 to 18 hours. You will normally need to take an independent flight from Bogota to Pasto (i.e. Self Transfer) which is about an hour. Timing the second flight can be tricky it could make sense to stay a night in Bogota and see some sites then head to Pasto. Let us know when you are arriving we may be able to arrange a life Otherwise you can get a taxi from Pasto airport to the city (~15euro).
There are definitely cheaper options for flights if you are happy to do a self transfer outside of Colombia but for us this is a bit too risky. If you planning to travel to other places before or after your route may be different!
Renting a car is possible in Colombia but driving can be hairy so would avoid unless you really need for a longer trip as taxi's /ubers are really cheap.
Download uber, In Pasto you can use the street taxis in Bogota use Uber.
Flight
Aeropuerto Antonio Nariño - Pasto
Avianca
Flight
Aeropuerto Antonio Nariño - Pasto
Latam Airlines
Travel Note
Tourist Info for Pasto /Narino
Travel Note
Itinerary for Places to See in Colombia
For all the days along the way