Is this the Ontario in Canada?

No. This page is about Ontario in San Bernardino County, California. The FAA's list names it Ontario International, in Ontario, California, and the Census Bureau's file lists it as Ontario city, California.

How big is Ontario International for cargo?

The FAA's calendar year 2025 list of all-cargo airports by landed weight ranks it 8th at 4,897,871,391 pounds, up 1.5 percent from 2024, between Los Angeles International in 7th and John F. Kennedy International in 9th.

How many warehouses are in the county?

County Business Patterns 2023 lists 526 establishments in warehousing and storage in San Bernardino County, 14 with 1,000 or more employees. It counts establishments, not square feet, so it says how many sites there are, not how large the space is.

What sales tax rate applies to an Ontario delivery?

The CDTFA table operative October 1, 2026 lists the City of Ontario at 8.75 percent. The rate depends on the delivery address, so use your checkout's calculation. This is not tax advice; confirm with the California Department of Tax and Fee Administration.

Ontario, California: the eighth-ranked cargo airport, 526 county warehouses and a shipping plan

Ontario, California, is in San Bernardino County, 187,013 residents by the Census Bureau's 2025 estimate, and its name is easy to mistake for the Canadian province, so the facts here are all about the California city. Two federal data sets say what it is for a seller. The Federal Aviation Administration's 2025 list of all-cargo airports by landed weight puts Ontario International eighth on that list at 4,897,871,391 pounds, between Los Angeles International and John F. Kennedy International. And the Census Bureau's County Business Patterns counts 526 warehousing and storage establishments in San Bernardino County for 2023, 14 of them with 1,000 or more employees, in a county with about one seventh of Los Angeles County's total establishments. For an online store the practical meaning is where a parcel starts: many fulfillment operations sit here, and a free shipping threshold should be set from the rate of the place the parcel leaves from, not from the place the founder lives. This page gives the cargo figures, the county counts, the tax rows that apply to an Ontario delivery and a shipping-threshold plan for a store that fulfils from the Inland Empire. This is not tax advice.

Updated October 10, 2026 · 7 sourced facts

The Ontario International Airport terminal seen from the airfield, an airliner at a gate and the San Gabriel Mountains behind it under a wide blue sky — Photo: TSchuckert, CC BY-SA via Wikimedia Commons

Where Ontario sits

Ontario International ranks eighth by landed weight on the FAA's 2025 all-cargo list, and San Bernardino County, which holds the city, counts 526 warehousing and storage establishments, so for a store that fulfils from the Inland Empire it is where parcels start their trip.

A shipping-threshold plan for a store that fulfils from the Inland Empire

First, with your fulfillment partner
Get the origin ZIP and the carrier rate sheet that applies to it. San Bernardino County counts 526 warehousing establishments, 14 of them with 1,000 or more employees, so partners differ widely in size and service, and the rate sheet is what your threshold must beat.
Source: U.S. Census Bureau: County Business Patterns 2023, county file, NAICS 493 (warehousing and storage)
When you set the threshold
Pick a free shipping line from your average order value and the carrier cost out of that origin, then test it against your margin. Use the discounted shipping tiers template to set the line, and keep the progress bar on the same subtotal the rule uses.
Before you publish a delivery date
Take the date from your carrier's service table for the shopper's ZIP, not from airport statistics. The FAA's list measures landed aircraft weight, and Ontario's eighth place in 2025 says nothing about how long a parcel takes.
Source: Federal Aviation Administration: CY 2025 All-Cargo Airports by Landed Weight (ARP-CY2025-all-cargo-airports.xlsx, added 9/22/2026)
Before launch
Place two test orders to Inland Empire addresses, one in Ontario at 8.75 percent and one in Montclair at 9.00 percent in the CDTFA table, and check the tax on each total. Quote the threshold before tax.
Source: California Department of Tax and Fee Administration: Sales and Use Tax Rates by County and City (CDTFA-95, operative October 1, 2026)
After the first month
Compare shipping cost per order with the plan and move the threshold only by a small step. A line that is too low gives freight away and one that is too high leaves the offer unseen.

Build it with the Shipping discount tiers template.

Requires: Growth plan or higher.

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Questions merchants ask

Is this the Ontario in Canada?: No. This page is about Ontario in San Bernardino County, California. The FAA's list names it Ontario International, in Ontario, California, and the Census Bureau's file lists it as Ontario city, California.
How big is Ontario International for cargo?: The FAA's calendar year 2025 list of all-cargo airports by landed weight ranks it 8th at 4,897,871,391 pounds, up 1.5 percent from 2024, between Los Angeles International in 7th and John F. Kennedy International in 9th.
How many warehouses are in the county?: County Business Patterns 2023 lists 526 establishments in warehousing and storage in San Bernardino County, 14 with 1,000 or more employees. It counts establishments, not square feet, so it says how many sites there are, not how large the space is.
What sales tax rate applies to an Ontario delivery?: The CDTFA table operative October 1, 2026 lists the City of Ontario at 8.75 percent. The rate depends on the delivery address, so use your checkout's calculation. This is not tax advice; confirm with the California Department of Tax and Fee Administration.

Offer ideas for Ontario

Set the threshold from the origin you ship from

If your fulfillment partner is in San Bernardino County, ask which ZIP your parcels leave from and price the free shipping threshold from that origin's carrier rates. The county counts 526 warehouses, so the partner, not the founder's home, is the starting point.

Source: U.S. Census Bureau: County Business Patterns 2023, county file, NAICS 493 (warehousing and storage)

A neighbor of Los Angeles with its own tax row

The CDTFA table gives the City of Ontario 8.75 percent, against 9.00 percent for Montclair and 7.75 percent for the county row, so two Inland Empire shoppers can see different totals on the same cart. Let checkout calculate the tax and keep the threshold on the pre-tax cart value.

Source: California Department of Tax and Fee Administration: Sales and Use Tax Rates by County and City (CDTFA-95, operative October 1, 2026)

Air cargo rank is not a delivery promise

The FAA ranks Ontario International 8th for all-cargo landed weight in 2025, but the list measures aircraft landing weight, not parcel transit time. Take delivery dates from your own carrier's service table and do not borrow the ranking for a banner.

Source: Federal Aviation Administration: CY 2025 All-Cargo Airports by Landed Weight (ARP-CY2025-all-cargo-airports.xlsx, added 9/22/2026)

Facts and sources

The FAA's calendar year 2025 list of all-cargo airports by landed weight puts Ontario International 8th at 4,897,871,391 pounds, up 1.5 percent from 4,825,318,232 pounds in 2024.
Federal Aviation Administration: CY 2025 All-Cargo Airports by Landed Weight (ARP-CY2025-all-cargo-airports.xlsx, added 9/22/2026) (accessed October 10, 2026)
In the same list Los Angeles International is 7th at 7,798,528,026 pounds and John F. Kennedy International 9th at 4,416,366,638 pounds, so Ontario sits between the two, ahead of Indianapolis, Dallas-Fort Worth and Oakland.
Federal Aviation Administration: CY 2025 All-Cargo Airports by Landed Weight (ARP-CY2025-all-cargo-airports.xlsx, added 9/22/2026) (accessed October 10, 2026)
County Business Patterns 2023 lists 526 establishments in warehousing and storage (NAICS 493) in San Bernardino County, California, against 788 in Los Angeles County and 222 in Riverside County.
U.S. Census Bureau: County Business Patterns 2023, county file, NAICS 493 (warehousing and storage) (accessed October 10, 2026)
San Bernardino County's 526 warehousing establishments are 1.24 percent of its 42,571 establishments in all industries, while Los Angeles County's 788 are 0.26 percent of its 304,988, shares we computed from the same file.
U.S. Census Bureau: County Business Patterns 2023, county file, NAICS 493 (warehousing and storage) (accessed October 10, 2026)
Of the 526 warehousing establishments in San Bernardino County, the file lists 14 with 1,000 or more employees, against 3 of Los Angeles County's 788.
U.S. Census Bureau: County Business Patterns 2023, county file, NAICS 493 (warehousing and storage) (accessed October 10, 2026)
The CDTFA rate table operative October 1, 2026 gives the City of Ontario a combined rate of 8.75 percent, one point above the 7.75 percent San Bernardino County row, and lists Montclair at 9.00 percent and Chino and Fontana at 8.75 percent.
California Department of Tax and Fee Administration: Sales and Use Tax Rates by County and City (CDTFA-95, operative October 1, 2026) (accessed October 10, 2026)
The Census Bureau's Vintage 2025 estimate for July 1, 2025 is 187,013 residents for the city of Ontario, up from 175,262 in the April 2020 estimates base, a gain of 11,751 or 6.7 percent, and 25th among California's cities by our sort of that file.
U.S. Census Bureau: Vintage 2025 city and town population estimates (SUB-EST2025) (accessed October 10, 2026)

Not tax advice. Confirm current rules with the state revenue department before you rely on a date or an exemption.

Run the Ontario plan in Freebies Engine by Log Studio Lab.