Saia's August Tonnage Growth Steps Up to 8.7% as a $1 Billion Terminal Build-Out Starts Converting Into Share

Saia's less-than-truckload tonnage per workday rose 8.7% in August 2026 compared with August 2025, up from 7.8% growth in July, according to an operating-data release the company filed Sept. 3. Shipments per workday grew just 1.1% in August, versus 0.8% in July, while weight per shipment climbed 7.5%, up from 7.0% the prior month. Quarter-to-date through August, Saia's shipments are up 1.0%, tonnage up 8.3% and weight per shipment up 7.2% against the same period in 2025.

The gap between the shipment-count line (barely moving) and the tonnage and weight-per-shipment lines (both accelerating) is the story here, and it points the opposite direction from the fragmentation pattern showing up at XPO's network this month (see accompanying coverage in this section). Saia is moving meaningfully more weight without meaningfully more stops, which means heavier freight per pickup — consistent with a carrier absorbing larger accounts or denser lanes rather than picking up incremental small-parcel-style volume.

That reading lines up with what Saia disclosed at its second-quarter earnings. The carrier implemented a 7.1% general rate increase effective early July 2026, and contractual rate renewals averaged 10.7% for the quarter, according to Saia's Q2 2026 earnings materials filed with the SEC. Revenue per shipment, excluding fuel, was $303.12 in the second quarter, up 1.5% year over year, while the fuel surcharge made up 22.3% of total revenue, up from 14.6% a year earlier. Saia's operating ratio improved to 86.9% in the second quarter from 87.8% a year prior, and the carrier has guided to roughly 100 basis points of sequential deterioration in the third quarter — a smaller seasonal step-up than the 150-200 basis points Saia says is typical, with about a point of that attributed to a wage increase.

The tonnage growth is arriving alongside a network Saia has been building for four years. Since 2022, the carrier has added 33 new terminals and relocated or expanded more than 25 others, bringing its network to 218 terminals on roughly $1 billion of real estate investment, plus a matching $1 billion in fleet spending that has grown its tractor and trailer count about 20% and its linehaul driver headcount 26% versus 2022. Door count across the network is up about 25% over the same period.

What it means for shippers negotiating LTL capacity

Three things worth watching from a Saia print that, for the first time in several months, shows tonnage clearly outrunning shipment counts:

Density is starting to show up as pricing power, not just volume. A carrier growing tonnage on flat shipment counts and rising weight per shipment is gaining revenue quality, not just revenue — which is why Saia can push a 7.1% GRI and 10.7% average contractual renewals in the same quarter tonnage accelerated. Shippers renewing Saia contracts this fall should expect the carrier to hold firm on rate, not soften it to chase share, because the August data suggests it doesn't need to.

New terminals are past the "still figuring it out" phase. Four years and roughly $2 billion combined into real estate and fleet is a long enough runway that August's tonnage acceleration reads as those newer terminals converting into real freight flow rather than early ramp noise — a maturity signal worth confirming against Saia's next quarterly operating-ratio breakout by terminal vintage, if the company discloses one.

The GRI's expiry and renewal cadence matters more than its headline size. A 7.1% GRI effective early July compounds with 10.7% average contractual renewals — shippers whose contracts are up for renewal in the next two quarters should model both figures together rather than anchoring on the GRI alone, since the renewal rate is the number that actually lands on most existing accounts.