What Do I Actually Need to Travel?
REAL ID? Driver's license? Passport card? Passport book?
Travel documents can get confusing quickly, especially when the answer to "Do I need a passport?" seems to be "It depends."
Here's a simple way to understand the basics.
✈️ Flying Within the United States
For adults 18 and older, you'll need an acceptable form of identification to pass through TSA security.
Since May 7, 2025, a standard state-issued driver's license that is not REAL ID compliant is no longer accepted by TSA as your regular form of identification for domestic flights.
If your driver's license or state ID is REAL ID compliant, you're set.
Don't have a REAL ID? That doesn't necessarily mean you can't fly. TSA accepts several other forms of identification, including a:
- U.S. passport book
- U.S. passport card
- Global Entry card
- Certain military and other federally accepted IDs
So if you have a valid passport, you do not also need a REAL ID to fly domestically.
🌐 Traveling Internationally by Air
This one's much simpler.
If you're flying internationally, you'll generally need a valid passport book.
A REAL ID does not replace a passport for international travel.
And don't just check whether you have a passport—check the expiration date.
Some countries require your passport to remain valid for a certain period beyond your travel dates. Requirements vary by destination, and some countries require six months of remaining validity.
That's why checking your passport should be one of the first things you do when planning an international trip—not something you discover a week before departure.
🚢 Do I Need a Passport for a Cruise?
Here's where things get a little more complicated.
Some "closed-loop" cruises—cruises that begin and end in the United States—may allow U.S. citizens to travel using other qualifying citizenship and identification documents rather than a passport.
But that does not mean every cruise leaving from the United States has the same requirements.
Your itinerary matters. Your destinations matter. And the requirements of the cruise line and countries you're visiting matter.
Even when a passport isn't required for a particular cruise, traveling with one can make things considerably easier if something unexpected happens.
Imagine becoming ill in a foreign port and needing to fly home. Or missing the ship and needing to fly to another country to catch up with it.
Suddenly, the fact that you were allowed to board your cruise without a passport isn't nearly as helpful.
The U.S. Department of State recommends that cruise passengers carry passports for emergencies, even when one isn't required.
📚 Passport Book vs. Passport Card
These aren't the same thing.
Passport Book
The traditional passport book can be used for international travel by air, land and sea.
Passport Card
The wallet-sized passport card has more limited uses. It can be used for certain land and sea travel involving Canada, Mexico, Bermuda and some Caribbean destinations.
Most importantly:
A passport card cannot be used for international air travel.
If you're planning international vacations, the passport book gives you considerably more flexibility.
📅 How Long Is a Passport Valid?
For most U.S. citizens:
Age 16 and older when issued: Passport generally valid for 10 years.
Under age 16 when issued: Passport generally valid for 5 years.
Children's passports can sneak up on families because they expire sooner than adult passports.
⚠️ The "Six-Month Rule"
You may have heard that your passport needs to be valid for six months after your trip.
That's not a universal rule—but it's important.
Some countries require your passport to remain valid for up to six months beyond your travel dates, while others have different requirements.
Instead of relying on a general rule, check the entry requirements for the specific countries you're visiting.
For a cruise, remember to consider every country on the itinerary, not simply the country where you board the ship.
📸 Keep Backup Copies
Before international travel, it's a good idea to have backup copies of important travel documents.
Consider:
- Keeping a photocopy separately from your actual passport
- Saving a secure digital copy
- Leaving a copy with a trusted person at home
- Keeping important travel and emergency contact information somewhere accessible
A copy doesn't replace your passport, but it can be helpful if your original is lost or stolen.
🔍 Check Early!
My biggest advice about passports is simple:
Don't wait.
As soon as you begin thinking seriously about an international trip, find your passport and look at the expiration date.
If you don't have one, start the application process early.
It's much nicer to spend the weeks before your vacation deciding what to pack than worrying about whether your passport will arrive in time.
Before You Travel
Travel-document requirements can change and may vary according to citizenship, destination and itinerary.
Always verify current requirements for your particular trip through your cruise line or airline and official government sources.
A few minutes spent checking your documents now can prevent a very big travel-day headache later.