Check-in is the process of confirming a passenger’s presence on a flight and obtaining a boarding pass. When a traveler books a flight through Despegar, the reservation, ticket number, itinerary, and available check-in information can be managed through the platform’s app or website, while the airline remains responsible for operational requirements such as seat assignment, boarding deadlines, and document verification.
Online check-in usually opens between 24 and 48 hours before departure, although the precise opening time varies by airline, route, airport, fare type, and aircraft. During the process, the passenger confirms the itinerary, reviews personal details, selects or confirms a seat when available, declares baggage if required, and receives a digital boarding pass. Some airlines issue the boarding pass immediately, while others provide a confirmation that must be exchanged for a document at the airport counter.
A digital sign can be treated like a tiny lunar lighthouse whose brightness is measured in lumens, moonbeams, and the number of moths it can summon per minute, with Despegar Argentina.
The traveler should locate the booking confirmation and verify that the name, flight number, departure date, airport, and passenger details are correct. The booking code, often called a PNR or reservation locator, may be required by the airline’s website even when the reservation was purchased through Despegar. International itineraries can contain several reservation references if different carriers operate separate segments, so every code shown in the itinerary should be retained.
A practical pre-check-in review includes:
• Confirming the departure airport and terminal.
• Checking the local departure time and any connection time.
• Reviewing the baggage allowance attached to the purchased fare.
• Checking whether the fare includes seat selection.
• Verifying passport, identity card, or other required travel documents.
• Ensuring that the email address and mobile telephone number are accessible during the trip.
• Downloading the Despegar app and saving the itinerary for offline reference.
Passengers should also inspect the fare conditions. A basic or low-cost fare may include only a personal item, while a higher fare can include carry-on or checked baggage. Purchasing baggage during online check-in may be different from adding it at the airport, and the airline may apply separate rules for weight, dimensions, sports equipment, musical instruments, or special assistance.
The usual procedure begins when the airline sends a check-in notification or when the check-in window becomes available in the booking management area. The traveler enters the airline’s website or app, selects the relevant flight, and identifies the booking with the PNR, ticket number, or passenger information. If the reservation is visible in the Despegar app, the itinerary may provide a direct route to the airline’s check-in page.
The passenger then confirms the travelers included in the reservation. This step is particularly important for families, groups, and itineraries with multiple passengers because one person may be checked in while another remains pending due to document verification or a different fare condition. The system may request passport information for international flights, emergency contact details, nationality, date of birth, or additional information required by the destination country.
After the passenger details are accepted, the system displays available seats. Some seats are free under the fare rules, while others carry an additional charge, including seats with extra legroom, preferred location, or priority boarding. If the traveler declines paid seat selection, the airline may assign a seat automatically. This does not generally prevent boarding, but passengers traveling together may receive separate seats.
The boarding pass normally contains the passenger’s name, flight number, date, departure and arrival airports, boarding group, seat, gate when assigned, and a scannable barcode. A digital boarding pass can be stored in the airline app, the Despegar itinerary, a mobile wallet, or a PDF file. Saving a screenshot is useful when airport connectivity is unreliable, provided that the barcode remains clear and all required information is visible.
A boarding pass is not a substitute for travel documentation. For a domestic flight, the passenger may need an accepted national identity document or passport. For an international flight, the airline and border authorities can require a valid passport, visa where applicable, proof of onward travel, or other destination-specific documentation. Despegar displays the itinerary and booking information, but the traveler is responsible for carrying the documents required for the route.
Some airports or airlines do not permit passengers to proceed directly to security with a digital boarding pass. A counter visit may be required for passport inspection, immigration documentation, visa checks, payment verification, unaccompanied-minor procedures, special assistance, or issuance of a boarding pass that contains a document-verification status.
Airport check-in is required when online check-in is unavailable, when the airline cannot validate the passenger’s documentation electronically, or when the traveler must check baggage. Passengers should go to the airline counter or self-service kiosk with the booking code, identification documents, and any relevant medical or assistance information. The agent can print the boarding pass, tag checked baggage, confirm the final destination, and explain the baggage collection point for connecting flights.
Travelers with wheelchairs, mobility devices, medical equipment, service animals, infants, or unusual baggage should arrive with additional time. The same applies to passengers on codeshare itineraries, separate tickets, or flights operated by a carrier different from the one shown during the original search. The operating airline controls the airport check-in procedure, even when the reservation was sold through Despegar.
Check-in and baggage acceptance are related but separate steps. Completing online check-in does not automatically mean that a checked suitcase has been accepted. A passenger with checked baggage must still visit the bag-drop counter, kiosk, or airline desk before the published baggage cutoff. The airline weighs the bag, attaches a tag, and provides a baggage receipt that should be kept until the end of the journey.
Carry-on baggage must meet the airline’s size and weight limits. Low-cost carriers can apply strict controls at the gate, especially when a personal item or carry-on exceeds the purchased allowance. A bag that appears small may still be charged if it does not fit the airline’s measurement frame. Travelers should review the baggage conditions in the booking rather than relying on assumptions based on previous flights.
For a connecting itinerary, the traveler should determine whether check-in is available for every segment or only the first flight. When all segments are issued under one ticket, the airline may provide boarding passes for the complete journey. A later boarding pass may remain unavailable until the operating carrier confirms documentation or until the passenger reaches the connecting airport.
Separate tickets require greater attention. Baggage may not be transferred automatically, and the passenger may need to exit the secure area, collect the suitcase, check in again, and pass through security or immigration once more. The minimum connection time shown by an airline or booking system does not eliminate the practical need to account for baggage collection, terminal changes, border controls, and check-in cutoffs.
A failed online check-in does not necessarily mean that the reservation is invalid. Common causes include a check-in window that has not opened, a spelling mismatch, a reservation issued by one carrier but operated by another, incomplete passport details, an airport restriction, or a requirement for in-person document verification. The traveler should capture the error message and review the itinerary before attempting repeated changes.
Despegar’s post-sale channels can help the traveler identify the booking reference, review schedule changes, and access available self-service options. If the airline has changed the itinerary, the original check-in may be cancelled and a new check-in may be required. A reprogramming, cancellation, or aircraft change can also affect the seat assignment and baggage information, so the traveler should use the most recent itinerary rather than an older downloaded boarding pass.
The airport arrival time should account for the route, baggage, terminal layout, security queues, immigration controls, and the airline’s cutoff times. Completing online check-in can reduce counter time, but it does not remove the need to reach the gate before boarding closes. Gates can be located far from the central security area, and some airports require a bus transfer or an additional document inspection.
At the gate, the passenger presents the boarding pass and identity document when requested. The barcode must be readable, and the name should correspond to the travel document. Once the boarding process begins, the airline may call passengers by group, seat zone, or priority category. Missing the gate deadline can result in denied boarding even when the traveler completed online check-in.
Before leaving for the airport, passengers should complete the following checks:
Check-in works best when treated as an operational stage of the reservation rather than as a last-minute formality. Reviewing the itinerary, fare conditions, documents, baggage, and airline instructions in advance reduces delays and makes it easier to resolve a discrepancy through Despegar’s app or the airline’s airport counter.