Based on my experience traveling between Europe, Middle East and Asia:
- for return flights I always get different fares based on the origin. At least for the airlines that I travel with it does not matter what my IP is, but where my origin is.
- depending on the airline or the hotel booking service, I get higher fares if I book with an iPhone (including their apps) or a Mac comparing to when I spoof my user agent to Windows. The difference can be substantial.
- for hotel bookings, my IP location used to make a big difference. I guess these days the services just became better at finger printing and detecting VPNs.
- for return flights I always get different fares based on the origin. At least for the airlines that I travel with it does not matter what my IP is, but where my origin is.
- depending on the airline or the hotel booking service, I get higher fares if I book with an iPhone (including their apps) or a Mac comparing to when I spoof my user agent to Windows. The difference can be substantial.
- for hotel bookings, my IP location used to make a big difference. I guess these days the services just became better at finger printing and detecting VPNs.