If you want to get a free upgrade, To get upgraded for free include leveraging your schedule flexibility, using airline miles, taking advantage of last-minute upgrades and credit card statement credits.if any complimentary upgrades are available. keep a friendly, courteous attitude to improve your chances. conditions to get a free upgrade in the airline vary from airline to airline. For more info about How do I ask for a free upgrade on my flight, visit airlines official website or call them & read the blog -

Passengers,Turkish Airlines makes it easy to upgrade a Turkish Airlines flight . Turkish Airlines upgrade cost will depend on your flight route and when you upgrade your ticket. You can upgrade with cash, Miles&Smiles miles, or through Turkish Airlines’ upgrade offers, where you bid for an upgrade.
For more info visit their website or call them . or visit the mentioned at link-

Do you want to group travel? To Book A Flight For 100 People, you can visit the airline’s website. You have to go by phone or mail. Some steps are here-
Dial Airline Customer Service.
Share your group booking requirements.
Share travel dates, arrival & departure.
You will get the best quotation as per the applicable discounts.
If you are okay with the quote, go ahead with the booking process.
You can add all passenger details here.
Make payment to receive E-tickets.
To get the best deals for Book a Flight for 100 People, visit the airlines group travel website mentioned at link