Tips on Air Travel

The air in an aircraft is dry and cold and the oxygen level and atmospheric pressure are lower than on the ground. These conditions can lead to hypoxia (reduced oxygen in the blood), gas expansion during takeoff, and gas contraction during descent. These effects cause bloating, hyperventilation, and other inconveniences, especially in people who are already more vulnerable because of their health.

Before departure

• Inform the airline or travel agency in advance if you follow a medical diet or have food allergies.
• Eat lightly.
• If you have nasal congestion or are prone to earaches, use a decongestant before departure, and again before landing, if needed on a long flight.
• If you experience motion sickness, you may take an anti-nausea medication before departure. These medications can cause drowsiness, however.
• Take warm and loose-fitting clothes to wear during the flight.
• If you wear contact lenses, bring lubricating eye drops.

During the flight

• During takeoff and landing, yawn, chew gum or suck on candy (breastfeed or offer a bottle to young infants).
• Drink plenty of fluids (but avoid alcohol, carbonated beverages and coffee).
• Eat frequent small meals.
• Flex and rotate ankles frequently and get up from time to time to promote blood circulation.
• If you feel faint, recline your seat and rest.

Economy class syndrome

This term describes the risk of a blood clot forming in a vein (venous thrombosis) during a long flight. The risk may be influenced by the following factors: immobility, dehydration, lower cabin pressure and reduced oxygen levels.

You can limit your risk by following the above-mentioned guidelines during the flight.

People with health conditions (respiratory or circulatory problems, pregnancy) should discuss any air travel plans with their health care provider who may recommend wearing compression stockings or other precautionary measures. Certain medications predispose users to the formation of a blood clot in a vein. Talk to your pharmacist to see if you are taking any of those medications.

Contraindications to air travel

Due to the atmospheric conditions in the aircraft, flying may be contraindicated when suffering from certain health conditions.

Consult your health care provider in the following situations:

For more information:

• Government of Canada - Travel and tourism