Road trip cost
At 663 miles and roughly 10 hr 42 min of driving, the route from Mobile, AL to St. Louis, MO is a long-haul trip. Budget for multiple fuel stops, food, and possibly an overnight stay — gas alone can run well over a hundred dollars depending on your vehicle.
663 mi
10 hr 42 min
1
2
1 suggested fuel stop
Key takeaway
Drive intensity
Consider an overnight stop.
Pre-filled with the Mobile → St. Louis distance.
Estimated Trip Cost
$0.00
Per Person
$0.00
Gallons
0.00gal
Total miles: 663 (one way).
We summarize publicly available data — no scraping, no external API calls. Figures are calibrated periodically; use the calculators above for your exact inputs.
Estimated one-way fuel cost at $3.45/gal (US average). Adjust for your local price.
Assuming a 28 MPG sedan over the 663-mile route.
$74.59
one way · ~23.7 gal
$81.69
one way · ~23.7 gal
$91.16
one way · ~23.7 gal
A typical 28 MPG sedan with a 12.5-gallon tank covers about 350 miles per fill-up. Plan 1 stop along the way and fuel up before any remote stretches.
Assuming a realistic 230-mile highway range, plan 2 DC fast-charging stops. Tesla Superchargers and Electrify America have strong coverage on most US corridors.
Midpoint
Memphis, TN
Roughly halfway between Mobile and St. Louis. A natural place to fuel up, grab a meal, swap drivers, or stop overnight on longer drives.
Route personality
Long-distance interstate driveOvernight-friendlyMobile, AL
St. Louis, MO
Hurricane season (Jun–Nov)
Tropical storms can cause sudden closures and price spikes — check NOAA before long Southeast or Gulf drives.
For one or two people, driving usually wins on cost. Solo travelers with no luggage may find a budget flight cheaper once you add parking and meals.
A one-way drive uses about $82 in gas (28 MPG, $3.45/gal). A typical short domestic flight costs $80–$220 per person plus $30–$60/day for airport parking and any baggage fees.
Spring and fall offer the most comfortable driving conditions and lighter holiday traffic.
Mostly toll-free — you can drive this without a transponder.
Comfort matters more than MPG on this distance. A larger sedan, hybrid SUV, or full-size SUV for families works well.
Very high — strongly consider an overnight stop rather than pushing through in a single day.
At 10 hr 42 min of driving, splitting the trip across two days is safer and more enjoyable. Budget hotels along the route typically run $70–$130/night.
This 663-mile route between Mobile, AL and St. Louis, MO is a popular drive in the region. Expect roughly 10 hr 42 min behind the wheel under normal traffic conditions.
The drive is about 663 miles and takes roughly 10 hr 42 min under normal traffic. Add buffer for stops, construction, and rush hour around either city.
In a 28 MPG sedan, expect about 23.7 gallons one way. A 22 MPG SUV would use roughly 30.1 gallons.
At the US average of $3.45/gal, a 28 MPG vehicle costs about $81.69 one way. Round trip roughly doubles that. Use the calculator above for your exact MPG and local gas price.
A typical gas sedan needs about 1 fuel stop one way. A modern EV with ~230 miles of highway range needs about 2 DC fast-charges.
For one or two people, driving usually wins on cost. Solo travelers with no luggage may find a budget flight cheaper once you add parking and meals.
Spring and fall offer the most comfortable driving conditions and lighter holiday traffic.
Memphis, TN is roughly halfway and makes a natural fuel, food, or overnight break.
Estimated 663-mile fuel cost for each pick at average US prices. Tap any vehicle for a full cost breakdown.
Cheapest to drive
57 MPG · hybrid
~$40
est. one-way fuel cost
See full breakdownBest EV
134 MPGe · ev
~$27
est. one-way charging cost
See full breakdownBest sedan
37 MPG · sedan
~$62
est. one-way fuel cost
See full breakdownBest SUV for comfort
33 MPG · suv
~$69
est. one-way fuel cost
See full breakdownBest truck for cargo
26 MPG · truck
~$88
est. one-way fuel cost
See full breakdownRelated routes
Reverse drives, connecting routes and regional alternatives — each with distance and driving cost at current US gas prices.
Reverse drive
St. Louis to Mobile driving cost
663 mi · 10.7 h
Other road trip cost estimates that start in Mobile, AL.
Other routes with St. Louis, MO as the destination.
Same-state and neighboring-state drives with similar driving cost.
Longer connected routes leaving St. Louis, MO — great for multi-day road trip planning.
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