Kalshi Traders See 93% Odds Gas Tops $4 as Iran Strikes Return

Kalshi traders now put a 93% chance on U.S. gas prices crossing $4 a gallon by the end of July, up from just 56% two days earlier. The swing followed the collapse of the U.S. ceasefire with Iran and a fresh round of American airstrikes this week, with AAA’s national average sitting at $3.89 on Wednesday.

It is the third time since February that this same contract has repriced this hard. Each earlier spike unwound once diplomacy briefly took hold, and Polymarket, a rival prediction market, is pricing the same $4 bet more than 30 points lower, at just 57%.

Kalshi’s Odds Move Faster Than the Pumps

The contract at the center of the move asks a simple question: what will the U.S. national average for a gallon of gas be when July closes? Kalshi traders now place the odds of that number clearing $4 at 93%, with a 63% chance it tops $4.10 and less than a 5% chance it climbs back above $4.50, a level last seen in May.

Two days earlier, the same contract sat at 56%. AAA (the American Automobile Association), whose daily average settles the bet, listed Wednesday’s price at $3.89 a gallon, about 3 cents higher than Tuesday.

Oil has now risen three straight days. West Texas Intermediate settled Wednesday at $79.60 a barrel, up 26 cents, while Brent, the international benchmark, closed at $84.95, both gains of roughly 0.3%.

Not every prediction market agrees on how far prices climb. Polymarket prices the same end-of-July bet well below Kalshi, and its lower price tiers trade thin enough that a handful of bets can move the number.

Kalshi has grown fast enough this year to draw its own regulatory attention, adding insider trading safeguards under federal pressure just months ago. A Federal Reserve-affiliated study earlier this year found the platform’s forecasts matched Wall Street and New York Fed survey accuracy on several rate decisions and beat professional economists on headline inflation, Cryptonews reported.

Two Strikes and a Reopened War

President Trump said last Friday that the ceasefire with Iran was over after less than three weeks. By Wednesday, U.S. Central Command had launched two separate waves of strikes.

The strikes are designed to further degrade military capabilities Iranian forces have used to attack commercial shipping in the Strait of Hormuz.

U.S. Central Command wrote that in a Wednesday morning strike announcement, describing the first of two waves that day. A second wave followed at 3 p.m. ET, hitting sites near Bandar Abbas and Greater Tunb Island and targeting Iranian missile, drone and coastal surveillance capabilities, BeInCrypto reported.

Iran answered with retaliatory strikes on U.S.-linked assets in Bahrain, Kuwait and Jordan and declared the Strait of Hormuz shut, according to BeInCrypto. Washington reimposed its own naval blockade on Iranian ports near the waterway.

“US forces enforced naval blockade measures against Iran, July 15, by disabling an unladen oil tanker attempting to sail toward an Iranian port in the Arabian Gulf,” CENTCOM said, according to BeInCrypto. The strait carries roughly a fifth of the world’s oil shipments, which is why traders reprice so fast whenever fighting flares there.

The Third Time Gas Odds Have Spiked This Year

This week’s jump is not new. The same contract has swung this hard at least twice before since the war began in February, each time tracking a diplomatic break or breakdown.

1. Feb. 28, 2026: The U.S.-Israel coalition and Iran go to war. The national gas average sits below $3 a gallon.
2. March 7, 2026: Kalshi posts on X that traders forecast gas crossing $4 that month, already a full dollar above February.
3. April 29, 2026: Trump rejects an Iranian deal offer. Kalshi’s year-end forecast jumps to $5.30, with 62% odds gas tops $5.
4. May 21, 2026: The national average hits 2026’s high, $4.56 a gallon.
5. June 18, 2026: The U.S. and Iran sign a memorandum of understanding to end the conflict and reopen the Strait of Hormuz.
6. Early July 2026: The average slips back toward $3.79, its lowest point since the ceasefire began.
7. July 15, 2026: The ceasefire breaks. Kalshi’s odds on $4 gas jump from 56% to 93% in two days.

Every ceasefire push this year has eased the odds for a few weeks, and every collapse, including this one, has erased that relief within days.

Who Pays More at the Pump

The pain is not evenly spread. Hawaii, California and Washington are the only states averaging above $5 a gallon, while Indiana sits at the opposite end after temporarily suspending its state gas tax.

• Hawaii – $5.46 a gallon, the nation’s highest
• California – $5.37 a gallon
• Washington – $5.02 a gallon
• Indiana – $3.06 a gallon, the only state where prices fell year over year

A LendingTree analysis of AAA data found prices have risen by double digits in nearly every state over the past year, with New Mexico’s 34% jump the steepest of all. A Brown University analysis found the run-up in gas prices since the war began has already cost Americans more than $35 billion, NBC News reported.

Drivers are not the only ones squeezed. Jet fuel has surged too, and NBC News reported the pressure helped push Spirit Airlines to shut down entirely.

Why Might Falling Crude Not Mean Falling Gas?

Crude has fallen back toward pre-war levels below $75 a barrel, but pump prices have not followed at the same pace. Refining margins have stayed wide, the emergency oil reserve sits at a four-decade low, and GasBuddy expects gas to keep climbing before any relief in crude oil reaches the pump.

• Oil’s share of the price: Crude accounts for roughly half the cost of a gallon of gas, so a drop in barrel prices takes weeks to fully show up at the pump.
• A reserve at a 1983 low: The U.S. Strategic Petroleum Reserve sits at its thinnest level in more than four decades, leaving Washington less room to release emergency barrels if the strait closes again.
• Margins staying wide: Refined fuel prices have stayed elevated even as crude drifted lower, a gap Bloomberg has tied partly to the escalating Russia-Ukraine war squeezing refined product exports.

“Gas prices could go up another 15 to 40 cents a gallon over the next couple of weeks,” said Patrick De Haan, head of petroleum analysis at GasBuddy, a fuel-price tracking app. De Haan also pointed to the seasonal jump in summer driving and the cost of switching refineries to summer-blend fuel, which he said can add 10 to 25 cents a gallon on its own, separate from any war premium.

Not everyone thinks Iran holds all the cards here. Saudi Arabia can now route crude around the strait through its East-West Pipeline, and the United Arab Emirates has expanded capacity to bypass the strait entirely through Fujairah, according to experts cited by Fox News.

Traders Are Already Pricing Past July

Before this week’s strikes, Kalshi traders were already looking past July. On July 9, they gave a 75% chance gas would still be above $3.50 on Election Day, November 3, and 39% odds it would top $3.75, up from 37% and 22% before the latest round of fighting.

Traders also placed a 43% chance gas tops $4.60 before the year is out, up from roughly one in three before the renewed strikes. A poll cited by BeInCrypto found 79% of Americans expect the war to continue and six in 10 expect gas prices to rise over the next year.

The Energy Information Administration’s own July forecast, projecting gasoline averaging about $3.60 a gallon in the second half of the year, was published before this week’s strikes. Days later, AAA’s own newsroom reported prices reversing course, jumping 5 cents overnight as the ceasefire wobbled. The government’s math and the market’s math are no longer telling the same story.

Frequently Asked Questions

Will Gas Prices Really Hit $4 a Gallon This Month?

Kalshi’s own contract says it is very likely, and the math is close: the national average would need to climb only about 11 cents from Wednesday’s $3.89 to clear $4 by July 31. Traders price that at a 93% chance, up from 56% just two days earlier, as renewed U.S. strikes on Iran push oil higher.

How Does Kalshi’s Gas Price Contract Work?

The contract is a yes-or-no bet on where AAA’s daily national average for regular gasoline lands at a set date. Traders buy and sell shares based on their own probability estimate, and the bet settles once AAA’s verified figure resolves the question, the same mechanism Kalshi has used to track gas prices through every turn of the Iran war since February.

Why Do Kalshi and Polymarket Disagree on the Odds?

Polymarket prices the same end-of-July $4 bet at only 57%, more than 30 points below Kalshi. BeInCrypto reported that Polymarket’s lower price tiers trade thinly, meaning fewer traders are setting those odds and smaller bets can swing the price further than on a deeper market.

Could Gas Prices Climb Back to May’s Peak?

Kalshi traders give it less than a 5% chance gas revisits the $4.50 range this month, well below the $4.56 peak hit on May 21. Getting back there would likely require a sustained closure of the Strait of Hormuz rather than the strikes seen so far.

What Would It Take for Prices to Fall Again?

The Energy Information Administration’s own July forecast expects the average to settle closer to $3.60 to $3.80 a gallon in the second half of the year, but that outlook was published before this week’s strikes and assumes shipping through the Strait of Hormuz keeps recovering rather than stalling again.

Disclaimer: This article is for informational purposes only and does not constitute financial or trading advice. Prediction market odds and gas prices are volatile and can change quickly. Consult a qualified financial professional before making trading decisions. Figures are accurate as of publication on July 16, 2026.