Is there a train to Phoenix?

No, Amtrak does not provide direct passenger rail service to Phoenix.

What is the best airport?

Phoenix Sky Harbor International Airport (PHX) is the primary hub for the region.

How long is the drive?

The drive takes approximately 26 hours of pure road time, excluding stops.

Do I need a rental car?

Yes, Phoenix is a sprawling city where a car is essential for most visitors.

Is I-40 safe in winter?

It can experience snow in northern Arizona, so check road conditions before departing.

O'Fallon

Phoenix

Flight Driving

O'Fallon to Phoenix

Updated: 28 May 2026

The journey from O'Fallon to Phoenix spans approximately 1,750 miles across the American Southwest. You will primarily utilize I-70 West to I-40 West, passing through Kansas, Colorado, and New Mexico. Flying is the most efficient method, departing from St. Louis Lambert International Airport (STL) to Phoenix Sky Harbor (PHX). Driving offers a scenic route through the high desert landscapes of the Four Corners region. Expect significant elevation changes as you transition from the Mississippi River valley to the Sonoran Desert.

Total Distance: 2,816 km driving, 2,300 km air distance.

Fastest Way

Flying from STL to PHX takes 3 hours 15 minutes, saving over 20 hours compared to driving.

Cheapest Way

Driving is the cheapest for groups of three or more, costing roughly $350 in total fuel.

Compare O'Fallon to Phoenix Routes

	Flight Direct	Driving Direct
Duration	3 hours 15 mins	26 hours
Avg Price	$200 - $500	$300 - $450 in fuel
Operator	Southwest Airlines	Personal Vehicle
Route	STL to PHX	I-70 W to I-40 W
Tip	Book at least three weeks in advance to secure lower fares on non-stop routes.	Check your tire pressure before crossing the high-altitude passes in Colorado.

Travel Tips

Hydration
Carry at least one gallon of water per person in your vehicle when driving through Arizona.
Sun Protection
Wear high-SPF sunscreen and polarized sunglasses even during winter months in Phoenix.
Airport Transit
Use the PHX Sky Train to connect between terminals and the light rail system for free.
Driving Pace
Avoid driving through the Kansas plains during late afternoon to minimize sun glare.
Local Time
Remember that Arizona does not observe Daylight Saving Time, which affects your arrival clock.

Safety Tips

Dust Storms
If you encounter a haboob while driving, pull off the road, turn off lights, and stay inside.
Heat Exhaustion
Recognize symptoms like dizziness or nausea; seek shade and water immediately if they occur.
Vehicle Prep
Ensure your cooling system is serviced, as Phoenix heat is notoriously hard on car radiators.
Wildlife
Be cautious of wildlife on rural stretches of I-40, especially during dawn and dusk hours.