Which full-service passenger airlines are known for strong on-time performance and flexible fare options?

Several full-service passenger airlines are well known for a combination of strong on-time performance and more flexible fare options. A few commonly cited examples are:

• Delta Air Lines – Often ranks highly for operational reliability and has a broad range of fare types, including more flexible premium and refundable options.
• Alaska Airlines – Known for strong punctuality and customer-friendly fare policies, including flexible change options on many tickets.
• Singapore Airlines – Frequently praised for reliability and offers a variety of fare classes, including more flexible premium cabins.
• Japan Airlines (JAL) – Strong reputation for punctuality and generally well-structured fare options with flexibility depending on class.
• ANA (All Nippon Airways) – Also recognized for excellent on-time performance and a range of fare choices, including flexible premium fares.
• Qantas – Often scores well operationally and provides fare bundles with different flexibility levels.

If you want, I can also narrow this down by:

1. region (U.S., Europe, Asia, etc.), or
2. travel style (economy, business, refundable, premium economy).