And yet, this is not a part of the holiday most people particularly look forward too. Noisy fellow passengers, faulty air-conditioning and very limited legroom can make relaxing (and ideally, sleeping) quite hard to achieve.
The solution can be very simple: sometimes, all it takes is to plan your outfit cleverly, and to pack a few essentials.
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So before your next big flight, scroll through our gallery to discover all the travel accessories that will make your next long-haul journey a lot more enjoyable.
Cashmere hoodie, £295, Madeleine Thompson
Cashmere track pants, £295, Madeleine Thompson
Zodiac silk eye mask, £35, Yolke
Cashmere scarf, £100, Raey
Velvet baseball cap, £65, Le Amonie
Wool and cashmere scarf, £170, Isal Marant Etoile
In-flight travel bag, £250, Aya Hindmarch
Mules, £188, J Crew
Monogrammed luggage tag, £40, Mon Purse
Monogrammed travel wallet, £150, Mon Purse
Scrunchie, £75, Maison Michel
Sunglasses, £165, Zeus + Dione
Blazer, £39.99, H&M
Velvet slipper shoes, £725, Gucci
Trainers, £105, Geox