Planning
SIM, eSIM, or roaming?
Roaming from your home carrier is easiest but often the most expensive for data-heavy trips. Travel eSIMs install before landing and work in minutes if your phone supports them. Local physical SIMs can be cheapest for long stays but need a shop visit and sometimes passport registration — compare per-GB prices and hotspot needs, not marketing “unlimited” labels.
Last updated 2026-08-05
Roaming
- Check daily caps and fair-use limits in your plan.
- Fine for short business trips or emergency backup.
- Disable data on arrival if fees are uncapped.
Travel eSIM
- Buy and install on Wi‑Fi before departure when possible.
- Dual-SIM phones keep home number for SMS codes on line 1.
- Regional plans cover multi-country trips — match your itinerary.
- See our dedicated eSIM guide for setup steps.
Local SIM card
Airport kiosks mark up convenience; city phone shops are cheaper. Registration with passport copy is normal in Turkey, Vietnam, and elsewhere. Keep your home SIM safe if you swap trays — store it in hotel safe.
More planning guides
Airport transfer: train, taxi, or pre-booked ride
Take public transit when it is safe, direct, and you travel light. Pre-book a transfer when you land late, have heavy luggage, travel with children, or the official taxi rank is known for hassle. Rideshare and official taxi ranks work in many cities if you confirm the pickup zone and avoid touts inside the terminal.
ESTA, eTA, and electronic travel authorizations
Many countries require an electronic travel authorization before you fly — not a full visa, but mandatory pre-clearance linked to your passport (US ESTA, Canada eTA, UK ETA, Australia ETA, and the upcoming EU ETIAS). Apply only on official government sites; third-party “expeditors” markup a free or low-cost form. Approval is not guaranteed — errors or ineligible past visits can mean denied boarding.
First international trip
Your first international trip goes smoother when you fix immovable items early: valid passport, entry rules, flights, and insurance. Then layer lodging, airport transfer, and phone data. Save packing and restaurant research for last — they change least if documents are wrong.
How much to budget for a trip
Start with nightly lodging and daily food/transport bands for your destination and travel style, multiply by trip length, then add fixed costs: international flights, airport transfers, insurance, visas, and one-off tours. Add 10–20% buffer for surprises — estimates only; our country and city pages show static bands, not live prices.
International travel documents checklist
Before an international trip, confirm passport validity for your destination’s rules, check visa requirements on official government sites for your nationality, save digital and paper copies of bookings and insurance, and carry the physical passport on travel days — photos on your phone are backup, not a substitute at border control.
Passport validity rules
Many countries require your passport to stay valid for three or six months after your planned departure date — not just through the trip. Airlines check at check-in and can refuse boarding even if the border would have let you in. Renew early if your passport is within a year of expiry and you travel internationally often.
Apply this on your trip
Planning guidance only — not legal, medical, or booking advice. Verify entry rules, insurance terms, and prices on official or partner sites before you travel.