LATAM Airlines Carry-On & Check-In: Sizes, Rules and Boarding Guide

Last Updated: September, 2026

Quick Answer

LATAM Airlines allows a small personal bag up to 45 × 35 × 20 cm and 10 kg. A standard carry-on can measure up to 55 × 35 × 25 cm and weigh up to 12 kg in Economy or 16 kg in Premium Economy and Premium Business. Whether the carry-on is included depends on your fare and itinerary.

LATAM check-in is generally available 48 hours before each flight. On eligible trips, LATAM may complete check-in automatically when your required passenger and travel information is already available. If information is missing, you may need to complete check-in yourself.

LATAM baggage allowances and check-in procedures can vary by fare, cabin, route, destination and operating airline.  Check your booking on LATAM before travelling.

LATAM Carry-On & Check-In at a Glance

Travel detail	Current LATAM rule
Small personal bag	Up to 45 × 35 × 20 cm
Small bag weight	Up to 10 kg
Standard carry-on	Up to 55 × 35 × 25 cm
Economy carry-on weight	Up to 12 kg
Premium Economy / Premium Business	Up to 16 kg
Check-in availability	Generally 48 hours before each flight
Automatic check-in	Available on eligible itineraries
Boarding pass	LATAM website, app or other available airport options
Partner-airline flight	Check the operating airline’s rules

LATAM’s official baggage guidance lists a small bag up to 45 × 35 × 20 cm and 10 kg, plus a carry-on up to 55 × 35 × 25 cm; carry-on weight is up to 12 kg in Economy and 16 kg in Premium Economy or Premium Business. 

What Is the Difference Between a LATAM Personal Item and Carry-On?

The small bag is the item designed to travel under the seat, while the carry-on is the larger cabin bag intended for the overhead compartment.

A LATAM small bag can measure up to 45 × 35 × 20 cm and weigh up to 10 kg. A LATAM carry-on can measure up to 55 × 35 × 25 cm.

Bag	Maximum size	Maximum weight	Typical location
Small bag / personal item	45 × 35 × 20 cm	10 kg	Under the seat
Carry-on	55 × 35 × 25 cm	12 kg Economy / 16 kg Premium cabins	Overhead bin

Your exact fare determines whether the carry-on is already included. So, check the baggage information attached to your reservation rather than assuming that every LATAM ticket includes the same cabin allowance.

What Is the LATAM Airlines Carry-On Size?

The LATAM Airlines carry-on size is 55 × 35 × 25 cm. The measurement includes the bag’s exterior features such as wheels, handles and pockets.

If your bag is larger than the permitted dimensions, it may not qualify as cabin baggage. LATAM can require oversized cabin baggage to be transported as checked baggage, with any applicable baggage conditions or charges determined by your itinerary.

For this reason, measure your suitcase after packing it, not just when it is empty.

A simple measurement check

Before leaving home:

1. Pack the bag as you plan to travel.
2. Extend the handles and account for the wheels.
3. Measure its height, length and width.
4. Compare the measurements with 55 × 35 × 25 cm.
5. Check your booking for the applicable cabin-bag allowance.
   

How Much Can a LATAM Carry-On Weigh?

The LATAM carry-on weight limit depends on your cabin. Economy passengers can take a carry-on weighing up to 12 kg, while Premium Economy and Premium Business passengers can take up to 16 kg.

The smaller under-seat bag has a separate 10 kg maximum weight.

This is an important distinction because the weight limit for your small personal bag is not the same as the limit for your standard carry-on.

For checked baggage allowances and applicable charges, see our guide to LATAM Airlines baggage fees.

Does LATAM Include a Carry-On?

It depends on the fare and itinerary. LATAM does not apply one universal cabin-baggage allowance to every passenger, so your booking should be the first place you check.

Your booking shows the baggage allowance included with your fare and, where available, options to add cabin or checked baggage. Fare conditions can also differ by route and cabin.

If your trip includes another airline, do not assume that LATAM’s allowance applies to every segment. LATAM specifically advises passengers with flights operated by other airlines to check the baggage conditions of the relevant carrier.

For a closer look at the different fare and baggage conditions, visit the LATAM baggage allowance guide.

What Happens If My LATAM Carry-On Is Too Big?

If your cabin bag exceeds the permitted 55 × 35 × 25 cm dimensions or applicable weight limit, it may have to travel as checked baggage instead. Any additional baggage requirements or charges depend on your ticket and itinerary.

A full flight can also create a separate issue: overhead space may be limited, so a compliant carry-on may still need to be placed elsewhere according to the airline’s boarding and cabin procedures.

Keep important items such as travel documents, medication and other essentials in your small under-seat bag whenever possible.

How Does LATAM Airlines Check-In Work?

LATAM provides several ways to complete or access check-in, including its website, app and airport facilities.

For eligible journeys, check-in becomes available 48 hours before each flight. LATAM may complete the process automatically if it already has the information required for your trip. If something is missing, you may need to complete the process yourself.

You can generally use check-in to:

• Confirm your travel information
• Provide required passenger or document details
• Access your boarding pass
• Review your trip before going to the airport

If you are travelling with checked baggage, completing online check-in does not remove the need to drop your bag at the airport.

When Does LATAM Check-In Open?

LATAM check-in becomes available 48 hours before each flight. If LATAM does not already have the information required for your trip, you may need to complete check-in yourself. In that situation, LATAM says self-service check-in can be completed up to two hours before scheduled departure.

The exact process can depend on your itinerary, destination and whether LATAM already has all the required passenger information.

What is the LATAM check-in deadline?

If LATAM needs you to complete check-in yourself because required information is missing, the airline says you can do so up to two hours before the scheduled flight departure. Airport and document-verification requirements can vary, so confirm the instructions shown in your booking.

What Is LATAM Automatic Check-In?

LATAM automatic check-in is a service that can complete your check-in automatically when the airline already has the information required for your journey. LATAM says the process is activated 48 hours before each flight when the necessary information is available.

For international journeys, passengers may need to confirm their travel and document information before LATAM can complete automatic check-in. If information is missing, you may need to check in yourself.

For example, LATAM currently explains that passengers travelling on eligible domestic trips purchased through LATAM can have check-in completed automatically, while international or agency-booked trips may require information to be confirmed first.

Tip: Check your passenger and document information after booking so you are not trying to complete missing details at the last minute.

How Do I Check In Online With LATAM?

You can access your trip through LATAM’s website and complete the required check-in steps when they become available.

A simple process is:

1. Open your LATAM booking through the airline’s website.
2. Enter your reservation details if requested.
3. Review or confirm your passenger and travel information.
4. Complete any required documentation.
5. Access your boarding pass once check-in is complete.

LATAM also provides access to trips and boarding passes through its mobile app.

For help with booking-related questions, you can also refer to our LATAM Airlines customer service guide.

Can I Check In Through the LATAM App?

Yes. The LATAM Airlines app can be used to manage your trip and access your boarding pass. LATAM’s official guidance directs passengers to its website or app to review and confirm required travel information.

Using the app can be useful when travelling because your boarding pass and updated flight information can remain accessible on your phone.

Still, keep your passport or other required travel document with you. A mobile boarding pass does not replace required identification or travel documents.

How Do I Get My LATAM Boarding Pass?

You can obtain your LATAM boarding pass through the LATAM website or mobile app after completing the required check-in process.

LATAM also provides airport options for passengers who need assistance. If you have checked baggage, LATAM’s current instructions say passengers can use self-service facilities to print and tag bags where available before dropping them at the self-service bag drop or LATAM counter.

Save your boarding pass before heading to the airport so you are not dependent on airport connectivity.

What About LATAM Airport Check-In?

Airport check-in is useful if you could not complete the process online, need help with your documents or have baggage to check.

LATAM provides counters and self-service facilities at airports, although the services available can differ between airports. If online check-in is unavailable for your itinerary, LATAM recommends going to the airport counters or self-service kiosks.

If you have only a small cabin bag and your boarding documents are ready, LATAM says eligible passengers can proceed toward the boarding gate with their valid travel document.

Where Do I Drop My Checked Baggage?

If you are travelling with checked baggage, online check-in does not mean you can skip the baggage-drop process.

LATAM’s current guidance says passengers can use self-service facilities to print and tag baggage and then leave the bags at a self-service bag-drop machine or LATAM counter where those services are available.

The exact baggage-drop closing time can depend on your airport and flight. Check your booking and airport instructions before travelling rather than relying on one universal cutoff.

For detailed checked-bag rules, see our LATAM Airlines baggage fees guide.

What If My Flight Is Operated by Another Airline?

This is one of the most important exceptions to remember.If your itinerary includes another airline, check the baggage conditions shown for the trip and follow the check-in instructions for the airline operating your first flight. LATAM notes that baggage handling and extra-baggage purchases for interline itineraries can require you to deal with the operating airline of the first flight. 

LATAM says that passengers travelling with another airline should follow the relevant carrier’s check-in process. For Delta-operated flights, LATAM provides specific check-in instructions, while other partner-airline journeys may require passengers to continue the process on the operating airline’s website.

So, before packing, check who operates each flight, not just which airline sold the ticket.

Cabin Baggage and Security Rules

Your cabin baggage must also comply with the security requirements of the airport and country you are departing from.

For international travel, common cabin-security restrictions include limits on liquids and restrictions on certain sharp or hazardous items. Security authorities may apply additional rules depending on the departure airport.

If you are unsure about a particular item, check the current airport or national security guidance before packing.

For a broader comparison of airline cabin baggage requirements, see our airline carry-on and check-in rules.

Special Situations to Know

Travelling with a partner airline

Check the operating airline’s baggage and check-in rules for that segment. LATAM specifically notes that another carrier’s rules may apply when the flight is operated by that airline.

Travelling with checked baggage

Complete the available online or automatic check-in process, then allow enough time at the airport to print tags and drop your luggage.

Travelling with mobility equipment

Passengers travelling with wheelchairs or other mobility equipment should check LATAM’s current special-assistance conditions before departure, as handling procedures can vary by airport and equipment.

For help with a specific booking or special travel requirement, see LATAM Airlines customer service.

Common LATAM Carry-On and Check-In Mistakes

Avoid these simple mistakes before your flight:

• Using the wrong carry-on weight: Economy allows up to 12 kg, not 10 kg.
• Ignoring the small-bag limit: The personal bag has its own 45 × 35 × 20 cm and 10 kg limits.
• Assuming every fare includes a carry-on: Check your individual booking.
• Measuring an empty suitcase: Measure the bag as it will actually travel.
• Assuming every flight follows LATAM rules: Partner-operated flights can have different baggage and check-in requirements.
• Waiting until the airport to check your booking: Review your documents and check-in status before leaving home.
• Forgetting checked-bag drop: Online check-in does not eliminate the need to hand over checked luggage.

Smart Tips Before Your LATAM Flight

A few minutes of preparation can make the airport process much easier:

• Check your carry-on dimensions and weight before packing.
• Confirm whether your fare includes a cabin bag.
• Review your booking for any partner-operated flight segments.
• Keep passport and other required documents accessible.
• Check your trip around 48 hours before departure when LATAM check-in becomes available.
• If automatic check-in is available, make sure your required passenger information is complete.
• Save your boarding pass on your phone before leaving for the airport.
• If you have checked baggage, leave enough time for bag tagging and drop-off.
• For seat options and related fare benefits, see our LATAM Airlines seat selection guide.

LATAM Carry-On & Check-In: Key Points

• LATAM’s small personal bag can measure up to 45 × 35 × 20 cm and weigh up to 10 kg.
• LATAM’s standard carry-on can measure up to 55 × 35 × 25 cm.
• The carry-on weight limit is 12 kg in Economy and 16 kg in Premium Economy and Premium Business.
• Whether a carry-on is included depends on the fare and itinerary.
• LATAM check-in generally becomes available 48 hours before each flight.
• Automatic check-in may be available when LATAM already has the required passenger information.
• Partner-operated flights may follow the other airline’s baggage and check-in rules.
• Checked baggage still needs to be dropped at the airport even after online check-in.
• Check your specific booking for the final baggage and airport requirements.

Frequently Asked Questions

Editorial Review: This page has been reviewed for clarity and policy-sensitive information using current LATAM Airlines information. Because baggage allowances, check-in procedures and operating-airline requirements can change, travellers should verify the rules shown for their specific reservation before departure.

LATAM Airlines carry-on rules, baggage allowances and check-in procedures may vary by fare, cabin, route, destination and operating airline. Always check your booking and LATAM’s current information before travel.

FlyTripInfo.com is an independent travel information website and is not affiliated with LATAM Airlines.