In an attempt to boost tourism from the US, Mexico’s national airline carrier has a “DNA Discounts” program — which offers flights at lower rates for Americans with Mexican DNA.

The promotion was unveiled in an ad last year by AeroMexico, the company offering it, but it’s only just now going viral.

“Mexico’s first destination is America, but America’s first destination is not Mexico,” the ad says. “So we went to a typical American town to ask why they don’t consider Mexico an option to travel to.”

Throughout the commercial, residents of Wharton, Texas, are asked whether they’d make the trip across the border — and most don’t hold back when giving their answers.

“No way,” says one woman.

“Let me stay here in peace and let those folks stay on their side of the border,” a man adds.

After the negative feedback, someone off-screen points out how the number of Americans with Mexican heritage is on the rise — and then proceeds to inform the residents that they, too, have some Mexican blood in them.

“You’re 22 percent Mexican,” the person says, speaking to a grizzled old man in a denim vest, who proclaims: “That’s bulls–t!”

“So you get 22 percent off a flight to Mexico,” the speaker adds.

“Oh come on now, seriously? Is that for real?” the man replies. “What if I wanna take my wife?!”

According to Ogilvy — AeroMexico’s advertising agency — Homeland Security data shows that Mexican immigration has been prevalent in the southern United States since the 1800s.

“Meaning that a big percentage of Mexican ascendants in the USA doesn’t even know it yet,” their ad states. “So we did a DNA test to prove it and turn those results into discounts.”

The commercial, which was posted on social media, was first released back in May but apparently started making the rounds again last week amid the ongoing border wall discussion and government shutdown.

“So if a guy from [Mexico] flew to America, he could get a free ride back to Mexico,” joked one Twitter user on Thursday, in response to a Jan. 9 posting by Ogilvy about the program.

“Not really sure if this is more an ad to get bigoted Americans to go to Mexico, or a warning to Mexicans that they really won’t like the people in America,” another person said.

AeroMexico has yet to comment on the ad since it’s gone viral.