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Travel Questions, Answered

Straight answers to the travel questions people search most — how early to arrive, layover rules, cheap-flight timing, TSA rules, jet lag, passports, delays and compensation — each with a quick answer and the practical detail.

01 // Airport basics
02 // Security & TSA
  • What is the 3-1-1 liquids rule?

    Each liquid, gel or aerosol in your carry-on must be in a container of 3.4 oz (100 ml) or less, all fitting in one quart-size (1 litre) clear bag, one bag per passenger.…

  • Can you bring food through airport security?

    Yes — solid food (sandwiches, fruit, snacks, chocolate) is fine in carry-on. Liquids and spreads (soup, yogurt, hummus, jam) fall under the 100 ml rule. Fresh produce an…

  • Is TSA PreCheck worth it?

    If you fly two or more times a year from US airports, yes: shorter lines, shoes and laptops stay put, and many credit cards reimburse the fee. Global Entry costs slightl…

  • TSA PreCheck vs Global Entry vs CLEAR — which one should I get?

    Global Entry if you ever fly internationally (it includes PreCheck). PreCheck alone if you only fly domestically. CLEAR only if you fly a lot from airports where it oper…

  • Can I bring a power bank on a plane?

    Yes, in carry-on only — never in checked bags. Up to 100 Wh (about 27,000 mAh) without approval; 100–160 Wh with airline approval; over 160 Wh not allowed. Some airlines…

03 // Layovers & connections
04 // Delays & disruptions
05 // Booking & fares
  • When is the best time to book a flight?

    There is no magic day. For most routes, book 1–3 months ahead for domestic and 2–6 months for international, earlier for peak dates. Track prices with alerts and buy whe…

  • What day of the week is cheapest to fly?

    Tuesday, Wednesday and Saturday departures tend to price lower on many leisure routes; Friday and Sunday are usually the most expensive. It's a tendency by route, not a…

  • How do I find cheap flights?

    Search flexible dates on Google Flights and Skyscanner, check nearby airports, set price alerts, consider one-stop routings and stopover programs, and compare the total…

  • What is basic economy, and should I book it?

    Basic economy is a stripped-down fare: no seat selection, no changes, often no carry-on or checked bag, and last boarding group. Fine for a short trip with a backpack; u…

  • How do I avoid baggage fees?

    Fly carry-on only within the airline's size and weight limits, hold a co-branded credit card or elite status that includes a free bag, book a fare class that includes on…

  • What is a red-eye flight, and is it worth taking?

    A red-eye departs late at night and lands early morning. It's often cheaper, saves a hotel night and a vacation day, and is less delay-prone. Worth it if you can sleep o…

06 // Lounges
07 // In flight & health
  • How do I get over jet lag fast?

    Shift toward the destination's clock before you fly, get daylight at the right time on arrival, stay awake until a normal local bedtime, use caffeine only in the morning…

  • How do I sleep on a plane in economy?

    Pick a window seat away from galleys and lavatories, board rested not exhausted, use a neck pillow that supports the chin, an eye mask and earplugs, skip alcohol and hea…

  • How do I survive a long-haul flight?

    Choose your seat deliberately, dress in layers, drink water and skip alcohol, walk every two hours, download entertainment in advance, bring your own snacks, and plan sl…

  • Which seat is best on a plane?

    Window to sleep, aisle to move, exit row for legroom (if you're able-bodied and don't need under-seat storage), front of the cabin to deplane fast. Avoid the last row, s…

08 // Money & documents
09 // Packing
  • What should I pack in my carry-on?

    Everything you can't afford to lose or need in flight: passport and documents, medication, electronics and chargers, valuables, one change of clothes, a liquids bag unde…

10 // Family travel
  • How do I fly with a baby or toddler?

    Under-2s can fly on your lap (often free domestically, ~10% of the fare internationally) or in their own seat with a car seat. Request a bassinet on long-haul, board ear…

Also useful

Can I bring it on a plane? — carry-on and checked rules for 40 common items. Layover planner — should you leave the airport? Guides — the long-form versions.