Newport Beach, CA to Phoenix, AZ: 339 Miles, ~5 Hours Driving

Distance: ~339 miles (545 km) via I-405 N → I-10 E (most direct). Drive time: 5–5.5 hours without traffic.

Route

1. Newport Beach → I-405 N (San Diego Fwy) → I-10 E (Santa Monica Fwy / San Bernardino Fwy)
2. Through LA Basin (traffic variable), San Bernardino, Palm Springs, Coachella Valley
3. Cross Colorado River at Blythe (CA/AZ border)
4. Into Phoenix metro via I-10

Alternatives

• I-5 N → CA-99 N → I-40 E → I-17 S: Longer (~380 mi), avoids LA but adds mountain grades.
• Fly: SNA → PHX: 1h 15m (American, Southwest, Frontier). LAX → PHX: 1h 20m. + airport time = 3–4h total.
• Train/Bus: Amtrak (Coast Starlight to LA Union, then bus) / Greyhound — 8–10h. Not practical.

Key Considerations

• LA traffic: Add 1–3 hrs (rush hour, accidents). Leave early (5–6 AM) or late (after 8 PM).
• Desert heat: Summer 110°F+ — AC essential, check tires/coolant.
• Border Patrol checkpoint: I-10 west of Phoenix — have ID.
• Scenic detour: Joshua Tree NP (1 hr north of I-10), Palm Springs aerial tramway, Salton Sea (south).

Bottom Line

Drive = 5–8 hrs depending on LA traffic. Fly = 3–4 hrs door-to-door. For one person, fly. For family + gear, drive (if LA traffic cooperates).