A die-hard Mets fan is embarking on one Amazin’ journey – on a shoestring budget.

Scott Reing will be taking a mix of low-fare planes, trains and automobiles to see his beloved team take on the Kansas City Royals throughout the week – starting his wallet-conscious odyssey by making a 10-hour trek to Missouri Tuesday to see Game 1.

“This may never happen again,” Reing told The Post of the Mets finally getting into the World Series after a 15-year dry spell. “I want to be able to say I was there when.”

The 28-year-old lawyer started Tuesday long before sunrise, leaving his Astoria apartment at 5 a.m. to catch a 6:59 a.m. flight out of LaGuardia. He’ll then have nearly two hours on the ground in Chicago before landing in Omaha, Nebraska – which had much cheaper airfares than Kansas City.

“It came to about $419 [roundtrip] for the cars and flights,” Reing said. “I think that’s pretty good.”

And Reing and his buddy will then jump in a car rental – splitting the $59 expense — and drive three hours to Kauffman Stadium, watching ace pitcher Matt Harvey throw down against the Royals Tuesday night.

The die-hard fans still don’t have tickets to Tuesday’s game, but plan to scoop up some seats on StubHub — once prices drop.

“We’ll probably get them the day of because that’s when prices really fall,” he said, adding that he doesn’t want to pay more than $500 but is hoping to pay about $300.

After the game, they’ll drive back to Omaha and board a 6 a.m. flight back to New York — landing just before noon back at LaGuardia after another Chicago layover.

“I plan to be back to work by 1 p.m. to meet a client,” Reing said.

But Tuesday’s opener won’t be the only showdown he goes to of the 7-game series.

He splurged for a 20-game Saturday package for the 2015 season in order to get early access to playoff and World Series games.

“It allowed me to buy all the playoff games for this year at face value,” he said.

Tickets for the weekend games at Citi Field are selling for at least $517 on sites such as StubHub, but Reing’s seats were just $125, he boasted.

He’ll be going to those games aboard the 7-train.

“The train to the game is electric,” Reing said.

It’s also a bargain, at just $2.75 a ride.