Why Your Shipping Costs Keep Climbing: USPS Is Flying Mail to Honor a UPS Contract

The Scene That Starts Everything

You are standing at the counter with a box in your hands, watching the clerk type. The rate comes up on the screen and you blink. It is more than it was last month. You ask why, and the clerk shrugs — rates go up, that is what they do.

But there is an answer, and it is stranger than you think.

Your package is not just paying for fuel and labor. Part of what you are paying for is the cost of moving other mail by air — mail that did not need to fly — because the United States Postal Service signed a contract it now has to honor.

The Postal Service's own numbers, released August 7, show the consequences. Air transportation costs between USPS facilities jumped 4.7% year over year to $509 million in the quarter ending June 30. The agency's explanation, buried in the earnings report, is that it is "shifting certain package volume from highway transportation back to air to meet our service standards and contract requirements."

Translation: your mail is flying because a contract says it has to.

The UPS Air Cargo Contract

Here is the mechanism, in plain terms.

The Postal Service has a contract with UPS for air cargo. Under that contract, USPS guarantees a minimum average daily volume of mail moved by air — a floor it has to hit every day, whether the volume makes sense or not.

The problem is that Priority Mail volume is plummeting. People are not paying for expedited shipping the way they used to, so USPS is not generating enough air-worthy mail to reach the contract floor on its own. The agency's Office of Inspector General reported last month what happens next: to avoid paying penalties for missing the minimum, USPS shifts First-Class Mail and Marketing Mail — the ordinary letters and flats that should travel cheaply by truck — onto airplanes.

Think about that for a second. A letter that costs pennies to haul down the highway in a trailer gets loaded onto a cargo plane, burning jet fuel, because a contract demands it. The OIG said it plainly: if package volumes keep falling, USPS "will likely shift even more First-Class Mail and Marketing Mail into the air network to avoid higher costs even though that is inconsistent with the longer-term goal of reducing reliance on high-cost air transportation."

So the Postal Service is doing the expensive thing on purpose — to satisfy a contract it signed with a competitor-turned-partner.

What It Actually Feels Like

For you, this is not a line item on a federal balance sheet. It is the number on the screen at the counter.

It is the Ground Advantage label that costs a little more than it did last spring. It is the Priority Mail quote that makes you double-check the weight. It is the moment in October, right before the holidays, when you price out shipping ten gifts and decide to hand-carry three of them instead.

The frustration is that it feels random. Rates drift up and nobody tells you the real reason. You wonder if you are being nickel-and-dimed by a bureaucracy, and the truth is worse: the cost structure itself is bent out of shape by an obligation that has nothing to do with getting your package where it needs to go.

And it is not just you. The Postal Service raised prices an extra 8% in April on package services like USPS Ground Advantage and Priority Mail — a temporary hike scheduled to last until January 17, 2027 — to offset exactly these cost pressures. Revenue from package shipping went up 7.7% even though the number of packages dropped 3.4%. That is the whole story in two numbers: fewer packages, more money, because the agency has to close a hole.

Why It Should Not Be This Way

A postal system exists for a simple reason: to move things from here to there, reliably and affordably. Every decision the agency makes should serve that purpose.

Moving letters by jet so a contract's volume floor is met serves no postal purpose at all. It is the opposite of a postal purpose. It is a financial obligation wearing a mailbag.

Here is the principle: when an institution's internal contracts start dictating how your mail travels — and therefore what you pay — the system has stopped serving the customer. The customer became a revenue source for someone else's agreement. You should not be paying jet-fuel premiums for mail that should be on a truck.

What We See Every Day

At Mailbox Plus, at 7554 Fredle Drive in Concord Township, we watch this play out on the counter every week.

Customers come in with a box and a story: the post office was slow, the line was long, or the rate they were quoted made no sense for a package that small. They are not anti-USPS — most of them love their mail carrier. They are just tired of feeling like the pricing is somebody else's math problem.

Here is what we can do that a single-carrier counter cannot: we quote all four carriers — USPS, UPS, FedEx, and DHL — on the same scale, for the same package, at the same moment. When USPS rates climb because of air-cargo contracts and fuel surcharges, we do not shrug. We check whether UPS Ground or FedEx Ground now wins the package. Sometimes USPS is still the right call. Sometimes it is not. We tell you the truth either way because we are not owned by any carrier — we are paid by you, the person at the counter.

We also see the other side of the story: the online seller who needs a mailbox rental so their home address stays off public registries, and the small business that just needs someone to say "this will cost you X, not Y, and here is why."

How It Works

It is three steps, and none of them require you to track a federal contract:

1. Walk in. Bring the box, or grab one of ours. We have boxes, tape, and packing materials on hand.
2. Put it on the counter. We weigh it, measure it, and pull up live rates from all four carriers in front of you. You see the same numbers we see — real rates, not the sticker price.
3. Walk out. We print the label, hand you the tracking number, and your package is on its way — usually for less than the rate you would have paid printing it yourself.

Most packages are done in under three minutes. That includes the packing.

What You Lose by Not Acting

The rising tide of carrier costs is real, but the damage is not inevitable. Here is what staying in the old pattern costs you:

Money. Every rate hike that lands on a package you price by guesswork comes out of your pocket. A package quoted across four carriers instead of one is frequently a dollar or two cheaper — and across a year of shipping, that is real money.

Time. Standing in line at the post office to be told a rate you cannot compare is time you do not get back. The counter at Mailbox Plus compares the carriers for you in the time it takes to hand over a box.

Privacy. The more you rely on a single carrier out of habit, the less control you have over your own shipping — and the more likely you are to put your home address on a public registry just to receive packages. A private mailbox rental from $35 a month keeps your home address off those lists entirely.

Your Afternoon After the Change

It is a Tuesday afternoon. You have three boxes in the back of the car and a stack of orders to get out.

You drive to Mailbox Plus — Crile Road, turn onto Fredle Drive, park. You walk in with the first box. We weigh it, pull up the rates, and show you the winner. This week, for this package, it is FedEx Ground — a couple of dollars less than the USPS quote you were braced for. You watch the label print, take the tracking number, and you are back in the car in four minutes.

That is the feeling. Not just cheaper shipping — though usually it is. It is knowing that somebody compares the rates so you do not have to. It is shipping your packages without the background hum of wondering which contract is raising your costs this quarter.

Bring It In

You cannot fix the Postal Service's contract with UPS. You do not have to live with its consequences.

Bring your next box to Mailbox Plus at 7554 Fredle Drive in Concord Township. We will weigh it, quote it across all four carriers, and send it out for less than you expected — with the tracking number in your hand before you leave.

No contract drama. No shrugs. Just the cheapest honest rate, every time.