MailUSA Shipping St. Louis to Los Angeles (2026)
Shipping St. Louis to Los Angeles (2026)
St. Louis and Los Angeles are approximately 1,850 miles apart, with packages routing west through Kansas, across the desert Southwest, and into Southern California. This route falls into USPS Zones 6-7, placing it in the upper-middle range of domestic shipping costs. The distance is long enough that carrier and service selection meaningfully affects both price and delivery time.
Carrier Comparison
| Carrier | Small Package (1 lb) | Medium Package (5 lb) | Large Package (20 lb) | Overnight Available |
|---|---|---|---|---|
| USPS Ground Advantage | ~$7.00 | ~$12.50 | ~$24.50 | Yes (Priority Mail Express) |
| UPS Ground | ~$11.25 | ~$17.50 | ~$34.00 | Yes (Next Day Air) |
| FedEx Ground | ~$11.00 | ~$17.00 | ~$33.00 | Yes (FedEx Overnight) |
| FedEx SmartPost | ~$7.50 | ~$13.50 | ~$25.50 | No |
Rate estimates for St Louis–Los Angeles shipments are based on standard 2026 residential delivery. Actual costs vary by package size, weight, and surcharges.
Cheapest Option by Package Size
- Under 1 lb: USPS First-Class Package Service at ~$4.75 for items under 13 oz. Ground Advantage at ~$7.00 handles the full pound at the next-lowest price.
- 1-5 lb: USPS Ground Advantage at ~$7.00 to ~$12.50 beats UPS and FedEx by $4-$5 per package.
- 5-20 lb: USPS flat-rate boxes become the top choice. A medium flat-rate box at ~$16.10 undercuts the ~$24.50 Ground Advantage rate for a 20 lb package by over $8.
- Over 20 lb: UPS and FedEx Ground handle parcels up to 150 lb. For shipments exceeding 70 lb, freight shipping offers the best per-pound value on this longer route.
Delivery Time Comparison
| Service | Estimated Transit Time | Weekend Delivery |
|---|---|---|
| USPS Ground Advantage | 4-6 business business days | No |
| USPS Priority Mail | 2-3 business bus. days | No |
| USPS Priority Mail Express | 1–2 business days | Yes |
| UPS Ground | 4-5 business days | No |
| FedEx Ground | 4-5 business business days | Yes (FedEx Home Delivery) |
| FedEx 2Day | 2 business bus. days | No |
Ground delivery between St Louis and Los Angeles typically aligns with these estimates outside of peak holiday weeks.
Ground transit on this 1,850-mile route averages four to five business days for UPS and FedEx, with USPS Ground Advantage stretching to six in some cases. The route passes through relatively sparse territory between Kansas and Arizona, where hub spacing is wider.
Tips for This Route
- Flat-rate boxes deliver strong savings at this distance. Zone 6-7 pricing pushes weight-based costs upward. A USPS large flat-rate box at ~$22.45 saves $2-$11 compared to weight-based options for packages over 10 lb.
- Consider Priority Mail for the speed jump. Ground transit of 4-6 days is noticeably slower than Priority Mail at 2-3 days. The cost difference is modest enough that many shippers find the upgrade worthwhile on this route.
- Right-size your boxes to avoid surcharges. UPS and FedEx dimensional weight charges hit harder on longer routes. Downsizing your packaging by even one box size can save $3-$5 per shipment at Zone 6-7 rates.
- Batch shipments for volume discounts. If you regularly ship between St. Louis and LA, negotiate rates directly with UPS or FedEx. Volume shippers moving 15+ packages per week can often secure discounts that bring private carrier rates closer to USPS pricing.
Key Takeaways
- USPS Ground Advantage provides the lowest standard rates for packages under 10 lb, with delivery in 4-6 business days on this moderately long route.
- Flat-rate Priority Mail boxes are the clear value leader for packages over 10 lb, eliminating zone-based price escalation.
- The speed gap between ground (4-6 days) and Priority Mail (2-3 days) is wide enough on this route to make the upgrade worthwhile for many shipments.
- Dimensional weight pricing from UPS and FedEx makes tight, efficient packaging more important as route distance increases.
Next Steps
- Look up current USPS rates in our USPS Rate Guide.
- Compare all three major carriers with our Shipping Services Comparison.
- Shipping heavy or oversized items? Explore our Best Shipping for Heavy Packages guide.
Rate estimates are based on published carrier pricing and may fluctuate based on fuel surcharges and package specs. Confirm current pricing on carrier websites.