The experts behind every TravelOS number
Visa policy, airfare economics, insurance claims and on-the-ground city reporting. Each guide is written by a specialist in that field and fact-checked by a second one.
Elena Márquez
Tracks entry rules and residence permits across 190+ jurisdictions.
- Schengen & ETIAS
- Digital nomad visas
- Long-stay residence permits
Daniel Okafor
Ex-airline revenue analyst; models fare seasonality on 400+ routes.
- Fare seasonality
- Route economics
- Booking windows
How we research
Visa rules come from consulate circulars, government gazettes and regulation texts — never from other travel blogs.
Every price band states the observation window, so you can judge how current a figure is before you budget around it.
Each guide is written by one specialist and fact-checked by a second before it goes live, and re-checked when rules change.
We earn commission on some bookings and policies. Partners never influence rankings, prices or recommendations.
Spotted something out of date? Tell our editorial team and we will re-verify it against the primary source.