Like any major city, exercise caution in specific neighborhoods.

What is the best way to get around?

A rental car is recommended for exploring the wider region.

Yes, Amtrak serves the Gateway Station in St. Louis.

How far is the drive?

It is roughly 3,200 km from Cascade Locks.

Do I need a passport?

No, this is a domestic trip within the United States.

Cascade Locks

Saint Louis

Flight Driving

Cascade Locks to Saint Louis

Updated: 28 May 2026

The journey from Cascade Locks to St. Louis covers roughly 3,200 km. Driving via I-84 and I-80 is the most direct road route, taking about 30 hours. Flying from Portland (PDX) to St. Louis Lambert International (STL) is the fastest method, usually involving one connection. Alternatively, you can take the Amtrak Empire Builder to Chicago and transfer to the Lincoln Service train to reach St. Louis. This route traverses the high plains and the heart of the American Midwest.

Total Distance: Driving distance 3,200 km, air distance 2,700 km.

Fastest Way

Flight from PDX to STL takes approximately 6 hours including layover.

Cheapest Way

Driving is the most cost-effective for families or groups.

Compare Cascade Locks to Saint Louis Routes

	Flight Connecting	Driving Direct
Duration	6 hours	30 hours
Avg Price	$300 - $550	$450 - $700 in fuel
Operator	Southwest Airlines	Personal Vehicle
Route	PDX to STL via Denver or Chicago.	I-84 E to I-80 E, then I-29 S to I-70 E.
Tip	Southwest allows two free checked bags, which is helpful for long trips.	Plan for overnight stops in Salt Lake City and Omaha.

Travel Tips

Public Transit
Use the MetroLink light rail to get from the airport to downtown St. Louis.
Dining
Try the famous St. Louis-style pizza with Provel cheese while in the city.
Parking
Use parking apps to find affordable garages in the downtown area.
Weather
St. Louis summers are very humid; pack lightweight clothing.
Navigation
I-70 can be congested during rush hour; plan your arrival accordingly.

Safety Tips

Neighborhoods
Research your hotel location; stick to well-traveled tourist areas.
Vehicle Security
Never leave valuables in your car overnight, especially in city parking lots.
Hydration
Drink plenty of water during the summer months to avoid heat exhaustion.
Emergency Services
Keep the number for local roadside assistance saved in your phone.