How to upgrade for free when traveling abroad? A complete guide to free upgrades

1. You can also ask for an upgrade after getting on the plane, but you have to use miles to exchange it. If you are on good terms with the captain or flight attendant, they will have first-class vacancies.

2. Before checking in, you can call the airline customer service to apply for upgrades, credit card transfers or mileage.

If you purchased it through an agent, you can contact the agent to apply for an upgrade. You also need to add money

3. Arrive at the airport and go to the check-in manager counter to apply for an upgrade