Online check-in Chrono Aviation - https://www.check-in.site

As an AI language model, I don't have real-time access to specific airline systems or their websites beyond my knowledge cutoff in September 2021. Therefore, I cannot provide you with the exact process for online check-in with Chrono Aviation. However, I can give you some general information about online check-in that might be helpful.

1. Visit the website: Go to the official website of Chrono Aviation. The website should have a dedicated section for online check-in.

2. Login or retrieve your booking: Look for the login or booking retrieval option on the website. You may need to enter your booking reference number, last name, and possibly additional passenger information to access your booking.

3. Select your flight: Once you have logged in or retrieved your booking, you should see a list of your upcoming flights. Choose the specific flight for which you want to check in online.

4. Provide passenger details: Enter the required passenger details, such as name, date of birth, and passport information. Make sure to double-check the information for accuracy.

5. Select seats: Depending on the airline's policy, you may have the option to choose your seats during the online check-in process. Select the seats according to your preference, if available.

6. Review and confirm: After entering all the necessary information, review the details to ensure they are correct. Pay attention to the flight date, time, and any additional services or baggage options.

7. Check-in confirmation: Once you have reviewed all the details and confirmed the check-in, you should receive a confirmation message or a printable boarding pass. Some airlines may also provide an electronic boarding pass that can be saved on your mobile device.

It's important to note that the online check-in process can vary between airlines, so it's always best to refer to the specific instructions provided by Chrono Aviation on their website or contact their customer support for the most accurate and up-to-date information.