Follow the destination country’s address order, include its country name clearly, and provide your complete U.S. return address. USPS requires an English version when another writing system is used. Check the destination-specific format rather than forcing every foreign address into U.S. city, state, and ZIP-Code conventions.
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No. USPS does not provide ordinary tracking on First-Class Mail International letters. If you need evidence of delivery or another extra service, check available options and destination restrictions before mailing. Choose the service for the actual contents and documentation needs instead of assuming every international stamp produces a tracking number.
Submit an official change-of-address request through USPS or visit a Post Office and complete the required identity verification. Use the correct old and new addresses and start date. Also notify important senders directly; forwarding is a transition service, not a substitute for updating every account that uses your mailing address.
USPS says a move to an international address requires an in-person request at a Post Office, including identity verification before leaving the United States. Plan this ahead of the move and notify your regular senders too. The domestic online form should not be treated as a universal forwarding solution.
USPS states that digital or electronic identification is not accepted for the services covered by its ID requirements. Bring current acceptable physical identification and check whether that particular service also needs proof of address. A saved photograph of a license is not interchangeable with presenting the required original identification.
No. It provides evidence that you presented the mailpiece to USPS for mailing, not a receipt of delivery. If you need delivery confirmation or a recipient’s signature, ask which additional service fits your mail class before sending it. Keep the certificate and understand exactly which event it documents.
Use containers with a capacity no greater than 3.4 fluid ounces or 100 milliliters, placed together in one quart-size clear resealable bag per passenger. This covers ordinary gels, creams, pastes, and aerosols too. Pack the bag where it is accessible and follow the checkpoint officer’s instructions about presenting it.
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TSA permits medically necessary liquids in reasonable quantities above the ordinary carry-on limit. Tell the officer at the start of screening and remove them for separate inspection; they need not fit in the standard quart-size liquids bag. Check destination medication rules separately, especially for an international journey.
Yes. Formula and related infant-feeding liquids have a screening exception and do not need to fit in the ordinary liquids bag. Tell the officer before screening and separate them from other belongings for inspection. TSA says the child need not be traveling with you to carry these supplies.
TSA generally permits solid food in carry-on bags, although officers may ask you to separate it for a clearer inspection. Liquid or gel foods follow different restrictions. Keep food organized and check customs or agricultural rules for your destination; permission through security does not guarantee permission across a border.
Keep valuables with you instead of placing them in checked baggage. TSA says you may request private screening for yourself and valuable items. Organize them securely before reaching the screening area and follow officer instructions, rather than leaving small loose pieces where they are easy to misplace.
Yes. A valid U.S. passport book or passport card is on TSA’s accepted identification list. Check that you have the physical acceptable document before leaving for the airport. The checkpoint ID rule is separate from international entry requirements, and TSA advises checking its current list before traveling.
TSA generally does not require identification from children under 18 traveling within the United States. Airlines can have their own requirements, and unaccompanied-minor or expedited-screening arrangements need separate checking. Confirm the carrier’s instructions before departure rather than treating the TSA rule as the whole travel-document checklist.
Contact TSA Cares at least 72 hours before travel to request a Passenger Support Specialist for the checkpoint. Explain the screening assistance needed and review the current contact instructions. If a specialist is unavailable, TSA says you can ask for a supervisory officer at the checkpoint.
Remove the power bank and other spare lithium batteries and keep them with you in the cabin. FAA rules prohibit these loose batteries in checked baggage, even when the bag was originally intended as carry-on. Protect the terminals from short circuits and follow the airline’s additional battery instructions.
Under FAA passenger guidance, larger spares above 100 through 160 watt-hours require airline approval, with no more than two. They must stay in carry-on baggage with protected terminals. Check the marked rating and obtain confirmation before traveling; a battery fitting physically into a bag does not establish permission.
Exposed terminals touching metal or another battery can cause a short circuit. Pack each spare so the contacts cannot bridge, using suitable protective packaging or terminal covering. FAA requires spares in the cabin; keeping them out of checked baggage does not remove the need to prevent damage and electrical contact.
No. FAA guidance says permitted lithium-powered devices in checked baggage must be completely powered off and protected against damage or accidental activation. Carrying electronics in the cabin is recommended. Check your airline’s restrictions too, and remember that loose power banks and spare lithium batteries have separate cabin-only rules.
Notify the flight crew immediately. FAA identifies overheating, expansion, smoke, and fire as signs requiring prompt crew attention, and crews are trained to respond to battery incidents. Do not keep using or charging the device while deciding whether the problem is serious; follow the crew’s instructions.
Protect them from damage and prevent their terminals from touching metal. FAA lists options such as retail packaging, a battery case, nonmetallic tape, or a protective pouch. Confirm the chemistry first: an AA-sized battery is not necessarily alkaline, and lithium cells have their own travel restrictions.
Check whether its battery must be removed and whether removal is possible. FAA generally requires removal for checked smart baggage, apart from very small batteries within its stated limits. Removed lithium batteries travel as spares in the cabin. Confirm the suitcase’s specifications and airline policy before arriving at bag drop.
Multiply the battery’s rated voltage by its amp-hour capacity. If capacity is given in milliamp-hours, divide that figure by 1,000 first. For example, an 18-volt, 5-amp-hour battery is 90 watt-hours. Use the battery’s own rating, then compare it with the airline’s applicable limits.
The FAA recommends removing the battery, packing that battery appropriately in carry-on, and checking the tool. Confirm the battery’s watt-hour limit and protect both components from damage and accidental activation. Also check TSA’s tool restrictions and the airline’s policy; permitted battery capacity alone does not make a drill acceptable carry-on.
Yes. FAA requires aerosol release controls to be protected by a cap or another suitable method that prevents accidental discharge. Qualifying personal toiletries also have container and total-quantity limits. Carry-on liquids face the smaller TSA checkpoint limit, so permission for a checked aerosol does not automatically cover cabin packing.