When flying, avoid drinking coffee or relying too much on suitcase zipper locks; also, remove old flight tags from your luggage to avoid confusion for the current flight.
Flying Hacks: Things Not Everyone Knows About Air Travel

According to many, they can disable suitcase zipper locks with just a ballpoint pen by circling around the lock to open it. This is a method used by airport staff to identify locked or unlabeled luggage.

According to some who have served in airline supply warehouses, the headphones provided to passengers, despite being carefully wrapped, are not new. After each flight, they are taken out and repackaged for reuse.

Many lost or misrouted bags can be attributed to passengers not removing tags from previous flights. This causes confusion for baggage handlers and security scanners as well.

Treating airline staff with kindness and respect can lead to better assistance. Politeness goes a long way when requesting additional food from flight attendants; they'll gladly serve you the best options available. If neighboring passengers are too noisy, a gentle word with the attendant can secure you a more comfortable seating arrangement. Being courteous to gate agents may result in waived fees for overweight luggage.

Many travelers find that Tuesday evenings offer the cheapest airfares. The most economical flight days typically fall on Tuesdays, Wednesdays, and Saturdays. However, this observation is primarily based on experiences within the United States.

Coffee onboard airplanes often lacks proper hygiene as the containers are seldom sanitized in the mornings. Airport staff also overlook this issue due to low wages and inadequate cleaning supplies. Consequently, they usually just rinse the containers and refill them with coffee.

Approximately 30% of pets experience anxiety before boarding flights. Baggage handlers attempt to soothe pets, but their options are limited to conversing with them. Therefore, labeling your pet's carrier can lead to extra attention and care from staff.
According to Dan Viet
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Reference: Travel Guide by Mytour
MytourJune 23, 2016