1. Phoenix to Las Vegas: Approximately 275 miles (443 kilometers).
2. Tucson to Las Vegas: Approximately 450 miles (724 kilometers).
3. Flagstaff to Las Vegas: Approximately 265 miles (426 kilometers).
4. Yuma to Las Vegas: Approximately 170 miles (274 kilometers).
These distances are based on straight-line calculations and may vary depending on the actual driving routes taken. Travel time can also vary based on traffic, weather conditions, and road construction.