They’re on a line to nowhere.

Flyers were smacked with another day of hopelessly long security lines at local airports and across the country — as Congress continued to fail to fully fund the Department of Homeland Security on Friday.

Weary travelers from LaGuardia Airport in Queens to George Bush Intercontinental Airport in Houston were stuck trickling through mazes of Transportation Security Administration checkpoints as agency workers called out by the droves in protest over not getting paid because of the congressional snafu.

“I have no choice,’’ a fed-up Reina Alvarez of The Bronx said about arriving at LaGuardia four hours early for her 7 p.m. flight with her 13-year-old son to Orlando, Fla.

“It does annoy me a lot because it took me out of my way from all the things I had to do, but I guess I gotta do what I gotta do because of what is going on in the world today,” the 42-year-old mom told The Post.

Senate Democrats led by Minority Leader Chuck Schumer again resisted ending the funding shutdown by standing by their calls for reforms to immigration enforcement.

The White House ripped into Democrats’ stonewalling.

“Thirty four days into the Democrat shutdown — Americans are still facing HOURS long waits at airports across the country. Officers have gone without pay for the third time in nearly six months,” TSA said in statement Friday afternoon.

“Many TSA officers cannot pay their rent, buy food, or afford to put gas in their cars — forcing them to call out sick from work. Democrats must reopen DHS now.”

On Friday, work colleagues Rachel Sweet, 51, and Tiera Backer, 33, reached LaGuardia at 9:50 a.m. for a 2 p.m. departure to get home to Memphis after a Big Apple business trip.

“It’s crazy. I’d hate to come later and miss my flight because I’m stuck in the line,” Backer said.

A Manhattan woman named Melissa who was headed to Spain from John F. Kennedy Airport in Queens on Thursday told The Post she arrived for her flight 4½ hours early, or up to two hours earlier than usual.

Asked if she had a message for the government, she replied, “Yeah, you can’t print it, and they’d come after me.”

Another traveler called the ongoing ordeal “ridiculous.

“The federal government gotta figure this out,” said North Carolina resident Judy McDermott after landing at Newark Liberty International Airport on Friday.

“It’s not right to have people work with no pay. And they’re working, some of them aren’t, but a lot of them are.”

“I’m worried [for Monday] when I go out,” she said.

TSA agents have lost out on paychecks and are calling out sick or quitting the job completely thanks to the impasse, fueling the travel nightmare.

A shocking 9.81% of 50,000 TSA agents called out sick Thursday, according to the most recent data provided by the agency.

Locally, JFK Airport had a call-out rate at 28.7%, while LaGuardia was 15.9%, the TSA said.

The highest rate of absenteeism for the miserable day was the Bush airport at 33.1%, while the Hartsfield-Jackson Atlanta International Airport in Georgia and William Hobby Airport in Houston followed at 31.8% and 31.2%, respectively.

The peak wait times Thursday included 135 minutes for the standard TSA line at the Bush airport and 120 minutes at Luiz Munoz Marin International Airport in Puerto Rico, the agency said.

JFK’s wait time was 55 minutes, while LaGuardia’s was 50 minutes at peak.

The Senate failed for a fifth time to fund DHS agencies with only 84 senators bothering to show up to vote Friday.

A lone Democrat, Pennsylvania Sen. John Fetterman, joined 46 GOP lawmakers to reopen the department, but it wasn’t enough to overcome the 37 Democrats that stood in opposition.

“My impression, at least up until now, is this is all about politics for Chuck Schumer and the Democrats,” Senate Majority Leader John Thune (R-SD) said.

“The far-left base is demanding, again, that they fight the president.”

Even smaller travel hubs, such as the Patrick Leahy Burlington International Airport in Vermont, were facing extreme waits.

Laurie Lawless, who uses the airport once a month, told CNN she has never seen lines snake around so long.

“This is a huge line for our tiny airport,” Lawless said.

Transportation Secretary Sean Duffy highlighted three-hour wait times at Bush airport earlier Friday as he laid the blame on Senate Minority Leader Chuck Schumer and other Democrats.

Lines snaked around the airport and down an escalator into the baggage claim area, according to videos posted on social media.

But Schumer in a floor speech accused the GOP of holding the funding “hostage” so Immigration and Customs Enforcement could continue to function without change.

“Every previous vote offered by the Republicans has tied TSA funding to also continue funding for ICE without any reform of ICE,” Schumer said.

After the vote, the New York Democrat told The Post, “Senate Democrats have repeatedly offered to fund TSA without tying it to ICE funding, only for Republicans to block it each time. TSA agents could be paid, and airport lines could end right away if Republicans stop holding TSA hostage and vote yes. The President fired Kristi Noem because he agrees with Democrats — ICE is out of control and a threat to public safety at large.”

Additional reporting by Ella Morrison and Khristina Narizhnaya