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Yes—through-checked baggage works on one ticket with interline partners; on separate tickets, you usually must claim and recheck between flights.

No, a 50,000mAh power bank exceeds 160Wh, so it isn’t allowed on passenger flights; only smaller banks within limits may ride in carry-on, never checked.

Yes — if it’s a solid stick, you can carry any size; liquids, gels, or aerosols at 3.5 oz must go in checked bags under the deodorant rules.

Yes, on most airlines you can bring one carry-on plus one personal item; some basic fares only allow one small underseat bag.

Yes, you can bring two perfumes on a plane; keep each bottle at 100 ml or less in your quart bag, and place larger bottles in checked bags.

Yes. 70% isopropyl alcohol is allowed: carry-on up to 3.4 oz (100 ml) per bottle; checked bags up to 500 ml each, with a 2 L total per person.

Yes—on U.S./Canada routes you get 2 checked bags; on other routes, two bags are fine if your total stays within your fare’s kg limit.

No — 4 oz hair gel is over the carry-on limit. Use up to 3.4 oz (100 ml) in your quart bag, or put the 4 oz in checked luggage.

No, 4.2-oz toothpaste can’t go in carry-on; put it in checked bags or carry travel-size (3.4 oz/100 ml) inside your quart bag.

Yes — you can bring an 18W battery or charger. For lithium power banks, keep it in carry-on and under 100 Wh, or get airline approval up to 160 Wh.