The turbulence caused by the longest U.S. government shutdown may still be fresh in travelers’ minds this Thanksgiving; experts say preparing for the usual holiday crush of winter weather, heavy traffic and crowded airports can help ease the jitters.

“I think the shutdown at this point is history for air travel. The airlines understand this time of year so well. They know exactly what they need to do,” said Sheldon H. Jacobson, an airport and airlines operations expert. “The real challenge is making sure travelers can help themselves.”

Here’s a guide to navigating the busiest travel week of the year:

How busy could it be?

Travel forecasts point to packed airports, roads and trains.

A week after lifting the unprecedented flight restrictions it placed on commercial airlines during the shutdown, the Federal Aviation Administration is preparing for its busiest Thanksgiving week in 15 years, with more than 360,000 flights scheduled between Monday and next Tuesday. That’s more than 17.8 million people who will be screened at airports, according to the Transportation Security Administration.

Transportation Secretary Sean Duffy said Monday at a news conference that air traffic controller staffing levels have stabilized in time for what he says will be the busiest Thanksgiving on record for travel. At the same time, the head of the FAA reassured passengers that they can “fly with confidence” this week.

AAA projects 1.3 million more travelers will be on the roads than last year, bringing the total to at least 73 million.

Winter weather

You can’t control the weather, but you can control how prepared you are if a storm hits. If your flight is canceled or delayed, will you drive instead, postpone your trip, or cancel it? Knowing your options ahead of time can reduce stress if a storm leaves you stranded.

The Weather Channel offers a Thanksgiving weekly forecast highlighting major airports and highways that could be affected by bad weather — including snow, ice and rain — along with a free online tool in the Weather Channel app that shows whether your travel route might be impacted.

Forecasters on Monday warned of flooding rain and the possibility of severe thunderstorms from Texas to Arkansas and Louisiana into Mississippi, which could affect airports in the Dallas-Fort Worth area and Houston.

By Monday afternoon, over 750 flights into and out of Dallas-Fort Worth International Airport were delayed and about 100 canceled, while at Love Field, more than 100 flights were delayed and nearly 70 canceled, according to the flight-tracking website FlightAware.

On Tuesday, the FAA’s busiest day with more than 52,000 flights scheduled, forecasters say rain is expected in the Pacific Northwest and in much of the eastern U.S. Airports in Atlanta, Chicago, New York, Philadelphia, Seattle and Washington, D.C. could be impacted, according to the Weather Channel.

Another winter storm in the central U.S. could also take shape late Friday into Saturday.

“The details will come into better focus over the next few days, but anyone traveling home after Thanksgiving should check in on the evolving forecast and be ready for changing conditions,” said Matt Sitkowski, science editor-in-chief at the Weather Channel.

What to pack (and what to skip)

Jacobson, whose research contributed to the design of TSA PreCheck, recommends starting your packing by unpacking.

Check every pocket in case TSA-restricted items, like full-sized bottles, were left behind from a previous trip. This simple scan can help you get through security faster, especially when airports are crowded.

If you’re traveling with gifts, Jacobson suggests wrapping them at your destination because TSA agents may need to open them.

When deciding which clothes and shoes to pack, James Belanger, vice president of meteorology at the Weather Company, said to check the “feels like” temperature for a better sense of the weather, especially for those not used to the cold.

And don’t forget a REAL ID is required to fly within the U.S., or bring another accepted form of ID, like a passport or military ID.

People with iPhones can now also add their U.S. passport details to Apple Wallet, which can be scanned at participating airports if travelers don’t have a REAL ID. More than a dozen states already accept some form of mobile ID at airport checkpoints, and travelers can visit the TSA website for more details.

Road trip ready

Whether driving is your top choice or backup plan, AAA spokesperson Aixa Diaz suggests checking your tires, car battery and fluids, then hitting the road with a full tank of gas as early as possible to avoid traffic. Last year, AAA said, it responded to nearly 600,000 emergency roadside assistance calls during the Thanksgiving travel period to help drivers stranded by dead batteries, flat tires and empty tanks.

According to an analysis by Google Maps:

— Traffic on Wednesday is expected to be 14% heavier than usual between 10 a.m. and 4 p.m., with peak traffic from 1 p.m. to 3 p.m.

— On Thanksgiving Day, the roads will be busiest between noon and 3 p.m.

— When it’s time to head home, avoid driving from 12 to 3 p.m. on Saturday and Sunday, when traffic is heaviest.

The best passenger

“…is an informed passenger,” Jacobson likes to say.

Download your airline’s app to track your flight status, and check it regularly as your travel date approaches. That way, if your flight is canceled the day before, you can quickly look for alternatives.

Driving or flying, leave earlier than you think you need to. Knowing you won’t have to rush to your destination can help calm any nerves, whether it’s lingering anxiety from the shutdown or because you’re traveling with young kids or someone who needs extra help getting around.

“These are some very simple things to think about, but they’re important things to think about,” Jacobson said.

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Rio Yamat reports via The Associated Press; republished with permission.