Can you take a 20,000 mAh power bank on a plane?
Yes. At 3.7 V it is 74 Wh, under the 100 Wh limit, so it goes in your carry-on (max 2). A 30,000 mAh one is 111 Wh and needs the airline's approval.
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What size of power bank can I take on a plane?
Up to 100 Wh in your carry-on, at most 2 power banks, and never in checked bags. That is the international rule from 27 March 2026, and some airlines are stricter.
- Up to 100 WhAllowed in carry-on. About 27,000 mAh at 3.7 V.
- 100 to 160 WhOnly with the airline's approval.
- Over 160 WhNot allowed on passenger flights.
mAh to Wh: mAh × V ÷ 1000 = Wh. A 20,000 mAh power bank at 3.7 V is 74 Wh.
Verified 6 Nov 2026 against iata.org. Rule: ICAO Technical Instructions Doc 9284 Addendum No. 1.
What is the exact size of carry-on luggage?
There is no single standard. The most common limits across 261 verified airlines are 56 x 36 x 23 cm (43 airlines), 55 x 40 x 20 cm (42 airlines) and 55 x 40 x 23 cm (37 airlines). US airlines use 22 x 14 x 9 in.
How many litres of alcohol can I bring to the UK?
42 L beer, 18 L still wine, 4 L spirits >22% (or 9 L drinks <=22%). Tobacco: 200 cigarettes OR 100 cigarillos OR 50 cigars OR 250 g OR 200 heated sticks. You must be 17 or over.
Verified 5 Nov 2026 against gov.uk.
How much alcohol can I bring into Canada?
1.5 L wine OR 1.14 L spirits OR 1.14 L wine+spirits OR 8.5 L beer. Tobacco: 200 cigarettes AND 50 cigars AND 200 tobacco sticks AND 200 g loose tobacco (limits per type).
Verified 5 Nov 2026 against cbsa-asfc.gc.ca.
How much alcohol can I bring into the US?
1 L duty-free (USD 800 exemption); 150 ml under USD 200 exemption. Tobacco: 200 cigarettes + 100 cigars (USD 800 exemption); 50 cigarettes + 10 cigars (USD 200). Age 21+; must not violate arrival state law; more allowed with duty.
Verified 5 Nov 2026 against cbp.gov.
How many cigarettes can I bring to Australia?
25 cigarettes OR 25 g tobacco; heat-not-burn products prohibited. Alcohol: 2.25 L (age 18+).
Verified 5 Nov 2026 against abf.gov.au.
How many cigarettes can I bring to Sri Lanka?
None: cigarettes, cigars, beedies and snuff are banned in personal baggage. Alcohol: Tourists: 2 regular bottles wine + 1.5 L spirits. Residents: 2.5 L liquor + 2 L wine.
Verified 5 Nov 2026 against customs.gov.lk.
What is the duty-free allowance for Japan?
3 bottles bottles, 760 ml. Tobacco: 200 cigarettes OR 10 packs heat-not-burn OR 50 cigars OR 250 g. Age 20+.
Verified 5 Nov 2026 against customs.go.jp.
Can I take a vape on a plane?
Yes, on your person or in your carry-on only, never in checked or gate-checked bags. Charging and using it on board are banned, and some countries ban vapes outright (for example Thailand).
Verified 5 Nov 2026 against faa.gov.
Can I bring alcohol in my checked luggage?
Yes. Drinks of 24 to 70% alcohol are limited to 5 L per passenger in unopened retail packaging; over 70% (such as 151-proof rum) is not allowed. Your destination's customs allowance still applies.
Verified 5 Nov 2026 against faa.gov.
What food can't be taken on a plane?
Security lets most solid food through; your destination decides the rest. The UK bans meat and dairy from most non-EU countries, and the US requires you to declare all meat, fruit, vegetables, plants and seeds.
Verified 5 Nov 2026 against gov.uk. Verified 5 Nov 2026 against cbp.gov.
Can I take a lighter on a plane?
One lighter, carried on your person or in your carry-on. Torch lighters, refills and lighter fluid are not allowed in the cabin.
Verified 5 Nov 2026 against faa.gov.
Airline carry-on rules
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How we check every rule
- 261 airlines verified
- 176 countries covered
- Data last verified 6 Nov 2026
Each rule comes from the airline's or the government's own page, or from a named trusted source where the official page can't be reached. The source link and check date sit beside every figure. Read the methodology, see all sources, or report an error.