September 2026 Freight Market Report: Spot Rates Snap Back Amid Historic Diesel Inflation

By Transport Pro Analytics Team • October 5, 2026 • 8 Min Read

Executive Summary & Market Dashboard

Dry Van Spot
$3.20
↑ +4.2% MoM | +41.0% YoY
Reefer Spot
$3.73
↑ +7.5% MoM | +46.9% YoY
Flatbed Spot
$3.86
↑ +1.3% MoM | +44.0% YoY
Specialized RGN
$5.73
↑ +12.1% MoM | +24.3% YoY
Losing Loads
7.2%
↑ Reefer hit 9.2%
National Diesel
$6.26-$6.57
↑ +68.1% vs 2025

Key Takeaway: September reversed August's brief pricing pullback, setting new all-time spot records for dry van ($3.20/mile) and refrigerated equipment ($3.73/mile). However, transaction analysis confirms this rally is cost-push rather than demand-pull. While freight volumes remained relatively flat across national payment indices, extreme diesel price spikes and mounting carrier operating costs have tightened active capacity and driven spot rates to new highs.

Visual Market Intelligence: September Rate & Equipment Trends

Across the Transport Pro TMS network, spot rates across five of the six monitored trailer configurations advanced sequentially. The sharpest escalations materialized in temperature-controlled equipment and heavy-haul Removable Gooseneck (RGN) units.

Graph 1: Spot Market Van Rates (2026 Trajectory to Date)
Monthly national average dry van spot rate ($/mile) through September 2026
$3.40 $3.00 $2.60 $2.20 $1.80 $2.53 Jan $2.60 Feb $2.65 Mar $2.80 Apr $2.85 May $3.19 Jun $3.15 Jul $3.07 Aug NEW PEAK: $3.20 Sep '26
Graph 2: Year-Over-Year Spot Rates by Equipment Mode
Direct comparison between September 2025 and September 2026 ($/mile)
RGN (Specialized)
$5.73
'25: $4.61 (+24.3%)
Step Deck
$4.57
'25: $2.59 (+76.4%)
Flatbed (Standard)
$3.86
'25: $2.68 (+44.0%)
Refrigerated
$3.73
'25: $2.54 (+46.9%)
Dry Van
$3.20
'25: $2.27 (+41.0%)
Conestoga
$3.62
'25: $2.61 (+38.7%)
September 2026 (Current)
September 2025 (Prior Year)

Transactional Spot Rate Movements (MoM & YoY)

September confirmed that August's minor rate softening was purely transitory. The table below outlines exact rate shifts across all equipment categories tracked in our system:

Equipment Type Aug '26 ($/mi) Sep '26 ($/mi) MoM Change Sep '25 ($/mi) YoY Change
Removable Gooseneck (RGN) $5.11 $5.73 +12.1% $4.61 +24.3%
Step Deck $4.50 $4.57 +1.6% $2.59 +76.4%
Flatbed (Standard Deck) $3.81 $3.86 +1.3% $2.68 +44.0%
Refrigerated (Reefer) $3.47 $3.73 +7.5% $2.54 +46.9%
Dry Van $3.07 $3.20 +4.2% $2.27 +41.0%
Conestoga $3.71 $3.62 -2.4% $2.61 +38.7%
⚠ The Broker Margin Warning

Money-losing loads rose to 7.2% of total transactions across our brokerage network in September. Reefer shipments took the heaviest beating, with 9.2% of loads moving at an operational loss as sudden diesel spikes outpaced locked-in shipper billing formulas.

Brokerage Margins: Equipment-by-Equipment Breakdown

Freight brokerages experienced renewed margin compression in September. Because freight intermediaries operate between locked customer tariffs and daily carrier buy-rates, double-digit linehaul acceleration squeezed asset-light operations.

Mode Jan Feb Mar Apr May Jun Jul Aug Sep '26
Dry Van 12.7% 12.6% 13.3% 13.7% 13.1% 13.9% 14.3% 14.8% 14.3%
Reefer 10.8% 11.2% 11.6% 10.9% 9.7% 10.1% 11.1% 12.0% 11.5%
Flatbed 17.3% 15.9% 15.9% 15.6% 15.3% 16.6% 16.1% 15.7% 16.2%
Step Deck 14.8% 12.7% 12.7% 9.9% 13.1% 13.2% 14.7% 14.3% 15.6%
RGN 19.5% 20.0% 19.7% 17.9% 14.8% 21.1% 20.2% 17.9% 19.4%
Conestoga 15.3% 15.8% 12.2% 14.2% 15.0% 17.4% 19.7% 22.7% 17.5%

Cross-Border Shipments: Mexico Activity & Regulatory Headwinds

Cross-border volumes between the United States and Mexico remained elevated through September. Although total monthly loads dipped 4.1% sequentially from August (from 896 to 859 shipments), volume remained well above the 2026 year-to-date monthly benchmark of 798 loads (+10.1% above 2025 averages).

Period 2025 Shipments 2025 MoM Change 2026 Shipments 2026 MoM Change
January 566 — 356 -59.1%
February 552 -2.5% 1,175 +230.1%
March 700 +26.8% 676 -42.5%
April 953 +36.1% 454 -32.8%
May 511 -46.4% 768 +69.2%
June 803 +57.1% 641 -16.5%
July 733 -8.7% 1,353 +111.1%
August 506 -31.0% 896 -33.8%
September 580 +14.6% 859 -4.1%
Monthly Avg 725 (Full Year) — 798 (YTD) +10.1%

Bilateral commerce set an all-time monthly high of $94.8 billion, with the Port of Laredo maintaining its ranking as the nation's premier international port. However, intense US enforcement of cabotage statutes and rigorous reviews of roughly 194,000 non-domiciled Commercial Driver's Licenses created capacity bottlenecks at Nogales and Mexicali, elevating northbound spot cross-border rates.

Historical Quarterly Benchmark Matrix (2023 - Q3 2026)

A multi-year evaluation of quarterly averages shows that truckload spot rates have moved significantly above the historical cyclical floor established during 2023 and 2024.

Quarter RGN ($/mi) Step Deck ($/mi) Flatbed ($/mi) Reefer ($/mi) Dry Van ($/mi) Conestoga ($/mi)
Q1 '23 $4.39 $3.13 $2.78 $2.67 $2.32 $3.49
Q2 '23 $4.83 $3.60 $2.73 $2.41 $2.09 $3.22
Q3 '23 $4.83 $3.10 $2.69 $2.50 $2.14 $2.87
Q4 '23 $4.50 $2.58 $2.61 $2.49 $2.25 $2.68
Q1 '24 $4.09 $2.60 $2.61 $2.45 $2.15 $2.64
Q2 '24 $4.44 $2.79 $2.78 $2.44 $2.21 $2.64
Q3 '24 $4.27 $2.58 $2.69 $2.49 $2.23 $3.05
Q4 '24 $4.07 $2.61 $2.67 $2.49 $2.29 $3.24
Q1 '25 $4.57 $2.59 $2.74 $2.48 $2.26 $3.21
Q2 '25 $4.16 $2.63 $2.76 $2.43 $2.25 $2.87
Q3 '25 $4.43 $2.61 $2.71 $2.54 $2.29 $2.64
Q4 '25 $4.43 $2.63 $2.79 $2.70 $2.38 $2.78
Q1 '26 $4.88 $2.95 $3.03 $3.01 $2.63 $3.12
Q2 '26 $5.52 $4.27 $3.77 $3.45 $3.02 $3.99
Q3 '26 $5.59 $4.52 $3.84 $3.58 $3.14 $3.74

Strategic Recommendations for Q4 2026

Earlier forecasts predicting a calm, flat market for the remainder of 2026 have been challenged by prevailing cost pressures. With diesel hovering between $6.26 and $6.57 and non-fuel operating costs running 40% to 50% above historical levels, brokerages and shippers should take immediate precautions:

  • Implement Live Margin Validations: In response to the 7.2% negative-margin run rate, brokerages should configure hard dispatch validation locks in their TMS to stop unprofitable bookings before dispatch.
  • Update Dynamic Fuel Surcharge Formulas: Static fuel surcharge mechanisms cannot keep pace with $6.50+ retail diesel. Re-index contractual fuel tables to adjust bi-weekly.
  • Prepare for Double-Digit Contract Bids: With tender rejections at 14%, carriers will seek 10% to 15% rate increases in late-fall contract RFPs to cover fuel and wage pressures.
  • Audit Cross-Border Capacity Partners: Rigorous regulatory checks on foreign driver credentials necessitate closer relationships with vetted US-domiciled fleets and South Texas transload yards.