Packing for a trip usually starts with the same problem: you need comfortable, presentable clothes that can survive a long flight and still look decent at dinner. Gap has quietly become a go-to for exactly that, and right now the discounts are unusually generous. The retailer's sale section is running markdowns of up to 60 percent, with an extra 40 percent knocked off at checkout on select items — no code required. A barn jacket that normally costs $148 is down to $125, and men's Relaxed Straight Trouser jeans are marked down to $35.

The easiest freebie is the welcome discount. New email and text subscribers get a promo code for 15 percent off full-price items, and you can unsubscribe whenever you like. It only applies to first-time sign-ups, so it's a one-shot deal, but it stacks nicely with sale shopping if you time it right.

The bigger play is Gap's Encore loyalty program, which spans the whole brand family — Athleta, Banana Republic and Old Navy included. The Core tier is free and earns five points per dollar, plus free shipping on orders over $50. Premier kicks in once you spend $350 in a year and adds extended returns, a birthday bonus and a Create Your Own Sale day. The All-Access tier is reserved for Gap cardholders and is where the perks get serious: 25 points per dollar, 20 percent off your first order, and early access to collaborations and drops — recent tie-ups have included Dôen, Zac Posen, Victoria Beckham and Harlem's Fashion Row, which have done a lot to lift the brand beyond its mall-staple reputation.

If a code refuses to work, the usual suspects apply: typos, stray spaces, wrong capitalization, or terms you've missed — the 40 to 60 percent event, for example, only covers select sweats, denim and T-shirts. Clearing your browser cache or switching devices often does the trick, and Gap's customer service team can sort out stubborn cases.

For travellers, the timing matters. The markdowns cover both men's and women's styles, and the sorts of things on sale — cotton tees, pointelle crews, knit sweaters, barn jackets, relaxed trousers — are precisely the versatile layers that earn their keep on a trip. A $35 pair of travel trousers and a discounted jacket leave plenty of budget for the actual holiday. Stack the 15 percent signup code on top of existing markdowns, or join Encore for free before checkout, and the savings compound quickly. Just remember the extra 40 percent off is a limited-time offer, so if you're kitting out for a fall or winter trip, it's worth moving sooner rather than later.