How Long Is the Drive from Kansas City to St Louis?
The drive from Kansas City to St Louis takes approximately 4h 0min, covering 250 miles via I-70. Under normal conditions, expect to spend around $29 on gas.
Travel time can vary — during peak hours, weekends, or holidays, the journey may take 6–7+ hours. For the fastest trip, leave early morning (before 7 AM) or travel on weekday evenings.
Traffic Estimate
🟢 Light traffic
3h 24m
🔵 Typical
4h 0min
🔴 Heavy traffic
5h 48m
Traffic is usually worst during weekday rush hours (7–9 AM, 4–7 PM) and holiday weekends.
Trip Details
Distance250 miles (402 km)
Drive Time4h 0min
RouteI-70
Best TimeMid-morning (9-11 AM)
Fuel Costs
Gas (30 mpg)~8.3 gallons
Est. Cost$29
Route Tips: I-70
Plan rest stops every 2-3 hours on longer drives. Check traffic conditions before departure and keep your tank above quarter-full.
This trip can typically be done on a single tank of gas.
Best Time to Drive from Kansas City to St Louis
The best time to drive from Kansas City to St Louis is mid-morning (9-11 am). Weekday mornings before 7 AM or evenings after 7 PM typically have the lightest traffic. Avoid Friday afternoons and Sunday evenings when possible.
🟢 Best:Mid-morning (9-11 AM)
🔴 Avoid:Rush hour (4-7 PM)
Driving vs Flying
🚗 Driving
4h 0min
~$29 gas
✈️ Flying
3h 0m
~$80–$150 flight
✈️ Flying is faster when you factor in airport time. Flight time is ~30 min but add ~2.5 hours for check-in, security, and boarding.
All Travel Options
🚗 Drive
4h 0min
~$29
🚌 Bus
5h 33m
~$20–$45
🚂 Train
4h 33m
~$30–$75
Estimated times and prices. Bus/train availability varies by route. Driving gives the most flexibility for stops and schedules.
Frequently Asked Questions
How long does it take to drive from Kansas City to St Louis?
The drive from Kansas City to St Louis takes approximately 4h 0min covering 250 miles via I-70. Actual time may vary based on traffic, weather, and road conditions.
How much does gas cost for Kansas City to St Louis?
At 30 MPG and $3.50/gallon, expect to spend approximately $29 on gas for this 250-mile trip. You'll need about 8.3 gallons of fuel.
What is the best time to drive from Kansas City to St Louis?
Mid-morning (9-11 AM) to avoid heavy traffic. Weekday mornings before 7 AM or evenings after 7 PM typically have less congestion.
Are there tolls on the Kansas City to St Louis route?
There may be minor tolls (around $7) on parts of this route. Some sections have toll-free alternatives.
