How to Check In After Booking a Flight

Everyone · How-to · Updated October 1, 2026 · LearnLife Editorial

What do you need before starting the check-in process?

Before starting your flight check-in, gather these essentials to ensure a smooth process. First, locate your booking confirmation or e-ticket number, which airlines usually send by email after booking. This number is crucial for accessing your reservation when checking in. Second, have a valid government-issued photo ID ready—such as a driver’s license for domestic flights or a passport for international travel. If you’re traveling with children, bring their identification documents as well. Third, prepare any frequent flyer numbers or discount codes you want to apply. Fourth, know if you will be checking luggage; reviewing your airline’s baggage fees and rules ahead of time helps you avoid last-minute surprises. Also, ensure you have a reliable internet connection if you plan to check in online or via the airline’s app. Finally, review your flight details such as departure time and terminal, which you can find in your booking confirmation or on the airline’s website. Airlines typically open check-in 24 hours before departure, but this window can vary, so check your airline’s policy. If you want to understand the booking step better before checking in, consider reading What Does It Mean to Book a Flight?.

What are the steps to check in after booking a flight?

Checking in usually follows these clear steps:

1. Locate Your Booking Confirmation and ID: Find your booking confirmation email or printed ticket. You’ll need the booking reference number, often six alphanumeric characters, and a valid ID matching your booking name.
2. Access the Airline’s Official Website or App: Use the airline’s official website or mobile app to avoid scams or data errors. Avoid third-party sites for check-in.
3. Enter Your Booking Reference and Last Name: On the check-in page, input your booking reference and last name exactly as they appear on your reservation. This step authenticates you in the airline’s system.
4. Confirm or Select Your Seat: You’ll see your assigned seat or be offered a chance to choose one. For example, if you prefer an aisle seat for easier access, select from available options. Some airlines charge extra for preferred seating, so be prepared.
5. Add Checked Baggage or Additional Services: If you plan to check bags, add them now. Paying online typically costs less than paying at the airport. You can also add services like priority boarding, travel insurance, or in-flight meals.
6. Review All Passenger and Flight Details: Confirm your flight date, time, passenger names, and seat assignments to avoid errors that could lead to boarding issues.
7. Download, Print, or Save Your Boarding Pass: Choose your boarding pass format—print it at home, download to your phone, or receive it via email or text message. Some airlines also allow saving boarding passes to your phone’s mobile wallet for convenience.
8. Prepare for Your Arrival at the Airport: If you have checked bags, plan to arrive early to drop them off. Otherwise, with your boarding pass and valid ID, proceed directly to airport security.

To summarize, here is a table explaining these steps and why they matter:

For more on booking flights before this step, see How to Book a Flight Online.

How can you tell your check-in worked?

After completing check-in, confirm success by checking for a valid boarding pass. Online, you should see a confirmation page stating something like “Check-in complete” or “Boarding pass issued.” The boarding pass will display your name, flight number, departure time, gate number (if available), and seat assignment. You may receive an email or text with a link to your boarding pass. If using the airline’s app, your boarding pass should appear in your account. At the airport, a kiosk will print your boarding pass, or an agent at the check-in counter will provide a physical copy. Additionally, your flight status in the app or website will change from “Booked” or “Reserved” to “Checked in.” Having an accessible boarding pass—printed or digital—confirms you are ready to proceed through security and board your flight.

What should you do when check-in goes wrong?

If you cannot complete check-in online or via the app, start by verifying you are within the airline’s check-in window. Check the airline’s website for the exact time frame, as attempting too early or after the cutoff will cause errors. Double-check that you have entered your booking reference and last name exactly as on the reservation—no extra spaces or typos. If problems persist, try clearing your browser cache, switching browsers, or restarting your device. If you still cannot check in, contact the airline’s customer service by phone or chat for help. At the airport, self-service kiosks are a backup option, allowing you to check in and print your boarding pass. If kiosk check-in fails, proceed to the airline’s check-in counter where staff can assist you. Arriving early at the airport in these situations is critical to avoid missing your flight. For more support with booking issues, see How to Get Help When Booking a Flight.

How can you adapt the check-in process for different travelers?

The check-in process can be adjusted depending on your travel needs:

• Families traveling with children: Check in early to select seats together. Airlines sometimes offer family boarding to allow parents and children to board before general boarding begins. When checking in online, look for seat maps to pick adjacent seats.
• Students: Some airlines have student discounts or special check-in guidelines. Students should verify their eligibility and carry student ID or proof of enrollment. For detailed guidance, see How to Book a Flight for a Student.
• International travelers: Have your passport, visa, and any required health documents ready at check-in. Some countries require additional forms or declarations during check-in. Check your airline or government website for specifics.
• Passengers with disabilities or special needs: Request assistance during check-in, such as wheelchair service or seating accommodations. Many airlines allow you to specify these needs online or via customer service before arriving at the airport.
• First-time flyers: If unsure about online check-in, consider checking in at the airport counter or using kiosks with staff assistance. This helps reduce stress and provides a chance to ask questions. For beginners, How to Check In for Your First Time Flying offers more tips.
• Frequent flyers: Enable automatic check-in features on airline apps to save time and secure preferred seats instantly.

Adapting the process helps ensure everyone’s unique needs are met for a smoother trip.

Why is checking in early beneficial?

Checking in as soon as the airline allows—often 24 hours before departure—provides several advantages. Early check-in gives you the best chance to select preferred seats, such as aisle or window seats, before they fill up. Some airlines release more seats or upgrade options at this time. Paying for checked bags online during check-in is often cheaper than paying at the airport. Early check-in also reduces wait times at airport kiosks and counters, helping you move through security faster. Additionally, if your flight is overbooked or there are schedule changes, early check-in increases your chances of getting rebooked or compensated promptly. For new travelers, checking in early provides extra time to resolve any issues or ask questions.

What should you do at the airport after checking in?

Once checked in, if you have checked luggage, proceed to the airline’s bag drop area. Present your boarding pass and ID to the agent, who will weigh and tag your bags for the flight. Retain your baggage claim receipt for reference. If you only have carry-on baggage, head directly to the TSA security checkpoint with your boarding pass and ID ready for inspection. After clearing security, check airport monitors for your gate number and boarding time, as these can occasionally change. Arrive at the gate at least 30 minutes before the scheduled boarding time to listen for announcements and prepare your documents. Boarding typically happens in groups or zones, so follow instructions carefully. Keep your boarding pass accessible until you are seated on the plane.

Frequently asked questions

Can I check in for my flight more than 24 hours in advance?

Most airlines open online check-in 24 hours before departure, but some allow earlier check-in through their apps or customer service. Check your airline’s specific policy. Early check-in may not allow printing boarding passes until closer to departure.

What if I miss the online check-in window?

If you miss online check-in, you can usually check in at airport kiosks or counters. Arrive early to complete check-in before the airline’s cutoff time, which varies by airline and flight.

Is it necessary to print a boarding pass?

Printing a boarding pass is not always required. Many airlines accept digital boarding passes on smartphones. However, having a printed copy can be a helpful backup if your phone battery dies or if the app malfunctions.

How do I check in if I have connecting flights?

Some airlines allow you to check in for all connecting flights at once, giving you boarding passes for each leg. If not, you may need to check in separately for each flight. Verify this when booking or by contacting your airline.

Can I add luggage during online check-in?

Yes, you usually can add and pay for checked bags or extra carry-ons during online check-in. Doing so can save money compared to airport fees. Check your airline’s baggage policies in advance.