Frequently Asked Questions

Quick answers to common travel questions — planning, documents, airport rules, packing, safety, and using FlightBuddy.

Last updated: February 23, 2026

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Note: Rules can vary by destination, airport, airline, and nationality. When it matters, always confirm official requirements for your exact itinerary.

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Frequently Asked Questions

When should I start planning a trip?Planning & Booking

Do I need travel insurance?Planning & Booking

How do I avoid hidden fees (baggage, seats, changes)?Planning & Booking

How long should my passport be valid for?Passports & Visas

Do I need a visa if I’m just transiting?Passports & Visas

What’s the liquids rule (3-1-1) and how strict is it?Airport & Security

Can I bring a power bank / lithium batteries on a plane?Airport & Security

How do I avoid overweight baggage fees?Baggage & Packing

What’s the best way to pack for a long trip without overpacking?Baggage & Packing

What should I do if I get sick abroad?Health & Safety

What vaccinations do I need for travel?Health & Safety

Should I exchange cash before I travel?Money & Connectivity

SIM vs eSIM vs roaming — what’s best?Money & Connectivity

How does FlightBuddy make money if it’s free?FlightBuddy