TAP Air Portugal's cabin bag allowance is 55x40x20cm, which is a little narrower in depth than some other carriers. That means not all 55cm cabin bags will fit - depth is worth checking before you travel.

Flight Knight has several sizes that work well for TAP: compact underseat options and overhead cases that sit within the 20cm depth limit.

TAP's cabin bag inclusion also varies by fare type. Discount and Basic fares may restrict you to a smaller personal item. If you've booked a discounted ticket, it's worth double-checking what's included so you're not caught out at Lisbon or Porto airport.