In-Flight Beauty

After Boarding

Remove all makeup.
Using either a travel sized bottle of micellar water and a cotton round or your favorite cleansing wipes, remove every trace of makeup once you have settled into your seat. This will help prevent clogging and breakouts, but will also make room for the treatments you will do on the flight. 
Recommended Products: Caudalie Micellar Cleansing Water or La-Roche Posay Effaclar Wipes (found these while traveling).

Use a hydrating mist.
After removing all of your makeup, prepare your skin with a hydrating mist that doubles as a toner. This will help to maintain your skin's pH balance and increase hydration, which really is the priority when you're in a pressurized tube and so close to the sun.
Recommended Products: Caudalie Beauty Elixir  or Avene Thermal Spring Water 

Moisturize by blending cream and oil.
Next, prepare a moisturizing treatment by blending your cream moisturizer with a facial balancing oil. This will feel a bit heavier than your typical moisturizing routine, which is perfect since the conditions will be a lot drier and you will have plenty of time to remove excess product later.
Recommended Products: Caudalie Premier Cru The Cream & The Elixir or Clarins HydraQuench Cream & Clarins Blue Orchid Face Treatment Oil 

Apply lip treatment.
Most lips are prone to becoming dry and chapped while traveling by air. Choose a hardworking lip moisturizing treatment to apply multiple times throughout the flight.
Recommended Products: Smith's Rosebud Salve 

Apply face sunscreen.
The most important step for in-flight skincare is to apply sunscreen to your face and neck (but also your hands). While you should use a face sunscreen daily, it is even more pivotal while flying since you are closer to the sun and experience greater exposure to UV rays. 
Recommended Products: Clarins Sunscreen Cream High Protection or Lancer Sheer Fluid Sun Shield Broad Spectrum Sunscreen

30 Minutes Before Landing

Use a pair of under eye patches.
Spend the last portion of your flight hydrating your under-eye area. This is the best way to look and feel refreshed after spending so much time in a dry airplane cabin. Pop the little sheets under your eyes and remove once the plane lands.
Recommended Products: Sephora Collection Pomegranate Eye Mask or Shiseido Benefiance WrinkleResist24 Pure Retinol Express Smoothing Eye Mask

Spritz your face and neck with hydrating mist.
Repeat just the same as before.

Apply a serum.
For extra radiance, smooth on a serum and allow it to settle in for the rest of the flight.
Recommended Products: Caudalie Premier Cru The Elixir or Perricone MD Skin Perfecting Serum

Reapply sunscreen.
Be sure to thoroughly apply.

Upon Landing

Reapply makeup and fix your hair.
Either while the plane taxis to the gate or in the airport bathroom, reapply your makeup and give your hair a quick brush.