What are the matchups in college football's conference championship games?

After a chaotic end to the regular season in college football, the matchups are set for championship week. Here’s a look at the showdowns coming up in the Power Four and Group of Five. All championship games are Dec. 7 except in the American Athletic, Conference USA and Mountain West, which will be played Dec. 6.

No. 9 SMU (11-1, 8-0 ACC, No. 9 CFP) vs. No. 12 Clemson (9-3, 7-1, No. 12 CFP) at Charlotte, North Carolina

What to know: The Mustangs completed a sweep of their first ACC schedule with a 38-6 win over California, making them the only team in their new league that didn’t lose a conference game; SMU has a 17-game conference winning streak dating to its days in the American Athletic. Clemson, which advanced to the title game after Miami lost at Syracuse, will be seeking its eighth ACC crown in the past 10 years.

No. 1 Oregon (12-0, 9-0 Big Ten, No. 1 CFP) vs. No. 4 Penn State (11-1, 8-1, No. 4 CFP) at Indianapolis

What to know: The Nittany Lions have been one of the quietest one-loss teams all season but get a chance for a big win and a higher CFP seed with a victory in this one. They will face the last unbeaten team in college football in the Ducks, who finished the regular season without loss for the first time since 2010.

No. 14 Arizona State (10-2, 7-2 Big 12, No. 16 CFP) vs. No. 17 Iowa State (10-2, 7-2, No. 18 CFP) at Arlington, Texas

What to know: The Sun Devils rode Cam Skattebo (177 yards and three touchdowns) in a big win over rival Arizona to land a title game berth after perhaps the wildest of all power conference races. The Cyclones will make their second appearance in the conference championship game. They lost to Oklahoma in 2020.

No. 3 Texas (11-1, 7-1 SEC, No. 3 CFP) vs. No. 6 Georgia (10-2, 6-2, No. 7 CFP) at Atlanta

What to know: The Longhorns have national title hopes but first get a chance to win a championship in their first year in the SEC. They will also get a chance to avenge their only loss of the season against the resilient and dangerous Bulldogs, who advanced after an epic overtime win against Georgia Tech.

No. 25 Army (10-1, 8-0 AAC) vs. No. 18 Tulane (9-3, 7-1, No. 17 CFP) at West Point, New York.

What to know: The Green Wave's loss to Memphis over the weekend likely cost the league any hope of a playoff bid but both teams are going to the postseason regardless. Army still has its annual showdown with Navy before a bowl game, too.

Jacksonville State (8-4, 7-1 CUSA) vs. Western Kentucky (8-4, 6-2) at Jacksonville, Florida

What to know: The C-USA title game pits two teams in a rematch six days after facing each other. WKU handed the Gamecocks their first league loss, 19-17 on Saturday night, and will have to beat them again for the title.

Ohio (9-3, 7-1 MAC) and Miami (Ohio) (8-4, 7-1) at Detroit

What to know: The two Ohio schools met earlier this season, with the RedHawks beating the visiting Bobcats 30-20. Ohio has won seven of its last eight.

No. 11 Boise State (11-1, 7-0 MWC, No. 11 CFP) vs. No. 21 UNLV (10-2, 6-1, No. 22 CFP) at Boise, Idaho

What to know: The Broncos bring a 10-game winning streak into the championship game, have won 11 straight at home and are on the verge of making the College Football Playoff behind Heisman Trophy candidate Ashton Jeanty. They have made the Mountain West title game three straight seasons. This one is a rematch of the title game a year ago won by Boise State and a regular-season matchup in October, a 29-24 Broncos win.

Louisiana-Lafayette (10-2, 7-1 Sun Belt) vs. Marshall (9-3, 7-1) at Troy, Alabama

What to know: The Ragin' Cajuns earned a spot in the championship for the fifth time in the seven-year history of the game. Marshall beat James Madison 35-33 in double overtime to clinch a spot for the first time in program history.

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Georgia running back Nate Frazier (3) celebrates his game-winning score against Georgia Tech in overtime in an NCAA college football game, Saturday, Nov. 30, 2024, in Athens, Ga. Georgia won in eight overtime periods. (AP Photo/Mike Stewart)

Penn State tight end Tyler Warren (44) hurdles Maryland defensive back Kevis Thomas (25) during the second quarter of an NCAA college football game, Saturday, Nov. 30, 2024, in State College, Pa. (AP Photo/Barry Reeger)

Southwest Airlines says it is ending cabin service earlier on flights, requiring passengers to do the usual pre-landing procedures such as ensuring their seatbelts are fastened and returning their seats to an upright position earlier than before.

Beginning on Dec. 4, a company spokesperson said, flight attendants will start preparing the cabin for landing at an altitude of 18,000 feet (5,486 meters) instead of 10,000 feet (3,048 meters). The change in procedure is designed to “reduce the risk of in-flight turbulence injuries” for crew members and passengers, the company said.

While turbulence-related fatalities are quite rare, injuries have piled up over the years. More than one-third of all airline incidents in the United States from 2009 through 2018 were related to turbulence, and most of them resulted in one or more serious injuries but no damage to the plane, the National Transportation Safety Board reported.

In May, a 73-year old man died on board a Singapore Airlines flight when the plane hit severe turbulence over the Indian Ocean.

The airline had also previously announced other changes.

Starting next year, Southwest will toss out a half-century tradition of “open seating” — passengers picking their own seats after boarding the plane.

FILE - A retrofitted Southwest Airlines passenger jet is shown in a hangar at Love Field on Sept. 26, 2024, in Dallas. (AP Photo/Tony Gutierrez, File)