What to Wear In Business Class: The Honest Guide For Australian Travellers

The short answer: there's no formal dress code for business class flights for most major airlines. The longer answer is more interesting. Qantas, Singapore Airlines, Emirates, Cathay Pacific, and most other carriers serving Australia do not specify required attire for business class passengers. In practice, airlines have the right to refuse boarding to passengers dressed in a way deemed 'inappropriate' — but this is extraordinarily rare and applies to extreme cases, not every day casual wear. 

The unwritten expectation is smart casual — meaning you should look like someone who belongs in the premium cabin without necessarily looking like you're heading to a board meeting. Neat, clean clothes that wouldn't look out of place at a nice café. That's genuinely the bar. 

One important note: some airlines do have specific policies around bare feet in common areas or heavily soiled clothing. Beyond that, the dress code is largely self-imposed. 

Australian travellers fly some of the world's longest routes in business class — Qantas flies Sydney to London in approximately 20 hours non-stop on Project Sunrise; Sydney to Dubai is 14 hours; Sydney to Los Angeles is 15 hours; Sydney to Singapore is 8 hours. The clothing calculus for a 20-hour flight is genuinely different from a 4-hour European hop. 

On very long routes, comfort isn't just preferable — it's practically essential for arriving in reasonable condition. The good news: most long-haul business class cabins now provide pyjamas or loungewear, which changes what you need to board in significantly. 

Boarding is when you're most visible — at the lounge, at the gate, and settling into your seat. This is the moment to look the part. Recommendations: 

• Trousers or chinos — smart, comfortable, and appropriate. Avoid anything too tight. Wool-blend or stretch trousers travel particularly well. 
• A neat shirt, blouse, or lightweight knit — breathable and presentable. Avoid anything that creases badly or is excessively casual (graphic tees, slogan shirts). 
• A light jacket or blazer — useful for temperature variation between the lounge, the gate, and the aircraft (which is often cold on boarding). A blazer elevates any outfit and folds easily. 
• Clean, comfortable footwear — trainers are completely acceptable in business class if they're clean and in good condition. Slip-on shoes make the pre-flight security process easier. 
• Comfortable underwear — this sounds obvious but matters enormously on a 20-hour flight. Avoid anything tight around the waist. 

The pyjama question: many of the airlines Australians fly most frequently in business class now provide pyjamas or loungewear as part of the service: 

If your airline provides pyjamas, you can board in your smart casual outfit and change once airborne — typically after the first meal service. This is completely normal and expected. You don't need to pack specific in-flight clothing if pyjamas are included. 

If your airline doesn't provide them, pack a pair of loose, comfortable trousers and a soft long-sleeved top in your carry-on for the overnight portion of the flight.

There's no formal prohibition on most clothing, but some choices work against you on a long flight or in the premium cabin environment: 

• Thongs or bare feet in common areas — acceptable at your seat, but walking the aisle or using the bathroom barefoot or in thongs reads as inconsiderate to other passengers. Keep a pair of socks or slip-on slippers for moving around. 
• Very tight jeans or restrictive clothing — fine for short flights, but genuinely uncomfortable over 10+ hours. Avoid anything that constricts circulation. 
• Heavily perfumed or strongly scented products — a confined cabin for 20 hours with a strong fragrance affects everyone around you. Keep it minimal. 
• Excessively casual or worn-out clothing — stained, torn, or very worn activewear gives the impression of not caring. Clean activewear (a good pair of running tights or a quality hoodie) is fine. 
• Full formal wear — a suit and tie for a 20-hour flight is not required, not expected, and will make you uncomfortable. Save it for the destination. 

Keep it simple: a neat, clean outfit you'd wear to a nicer restaurant. Avoid overthinking it. You'll likely feel overdressed by the end of the flight regardless, and that's fine. The most common first-timer mistake is dressing too formally — the cabin will quickly reassure you that comfort is the collective priority.

• Layers are your friend — aircraft cabins fluctuate in temperature. A light cardigan or jacket that lives in the seat pocket is invaluable. 
• Compression socks — on flights over 8 hours, compression socks are genuinely recommended for circulation. They're unattractive and essential. Wear them. 
• The amenity kit — most long-haul business class cabins provide an amenity kit with skincare, toothbrush, and sometimes socks and an eye mask. Factor this into what you pack. 
• Check your airline — amenity kits, pyjama availability, and lounge dress codes vary. A quick check of your specific airline's business class offering before you fly takes 5 minutes and removes any uncertainty. 

There is no dress code for business class. What there is: an unwritten expectation of smart casual on boarding, an invitation to change into pyjamas for the long overnight portion, and a cabin where comfort is the dominant and collective priority. Dress with a bit of care, pack layers, and wear compression socks. The rest takes care of itself. 

Ready to book? Explore Flight Centre Australia's business class flight deals — or talk to a consultant about finding the right airline and cabin for your next long-haul trip. 

Smart casual is the reliable choice: clean trousers or chinos, a neat shirt or blouse, and a light jacket or blazer. Clean trainers are completely acceptable. Avoid anything tight, heavily perfumed, or visibly worn. 

We believe travel should never be pointless. That's why we've launched our loyalty program, World360 Rewards, where every trip and every booking can earn you points towards your next adventure with Flight Centre.