Yesyou may check-in for your Delta Air Lines (DL) flight online starting 24 hours and ending 60 minutes before the scheduled departure time (depending on your departure city and destination) to receive a mobile boarding pass on your mobile device or a printable boarding pass. You may use this option if:
Can I check bags with the Delta Air Lines (DL) online web check-in?: Yes, you may check bags but you must drop them at the airport baggage drop before the check-in deadline for your flight.
Yes, you may check-in for your Delta Air Lines (DL) flight with your mobile device starting 24 hours and ending 60 minutes before the scheduled departure time (depending on your departure city and destination) to receive a mobile boarding pass on your mobile device. You may use this option if:
Yes, you may check-in for your Delta Air Lines (DL) flight curbside at most U S airport locations from 30 minutes to 4 hours before the scheduled departure time (depending on your departure city and destination). You will need your photo ID and also your flight reservation code, flight number destination, or electronic ticket number to check-in. Please check Delta Air Lines (DL) website for an exact list of participating airports.
At Delta, our team of 100,000 is focused on delivering a reliable, high-quality experience and minimizing inconvenience when circumstances disrupt scheduled operations. We deeply value the trust customers place in us to get them to their destination safely and on time. That said, we also understand the journey to people and places that connect the world sometimes doesn't go as expected.
When you create a SkyMiles account, you get more than just miles earned toward your next trip. Your SkyMiles account ensures Delta people more seamlessly know your travel details and preferences and can aid with reaccommodating should disruptions in your travel occur. Knowing you is better for serving you. Keeping your SkyMiles profile information up to date can help Delta teams reach you quickly and allows for direct contact and updates when needed.
Additionally, customers with SkyMiles accounts can access fast, free Wi-Fi presented by T-Mobile onboard nearly all domestic mainline flights to stay connected throughout their journey. While we continue to roll out free Wi-Fi to our international and regional flights, please be aware your in-flight Wi-Fi experience may vary. Customers can visit
delta.com/wifi for more information on what Wi-Fi service to expect on their next flight.
Turned off notifications by mistake? Find the notifications selection in your device's Settings app and ensure Fly Delta app notifications are turned on. Manage your device's sleep mode settings accordingly, too, to avoid notifications being silenced.
Make sure to keep an eye out for any emails or text messages you receive from Delta with essential updates on your flight status, travel documents and what to know before you go to the airport. (This information is also available in My Trips.)
To speed up your airport experience, consider applying for TSA PreCheck and opt in for Delta Digital ID when departing from ATL, DTW, LAX, LGA and JFK. Digital ID uses facial-matching technology to let customers check bags and move through security without showing a physical government ID, providing a seamless, hands-free way to navigate the airport. This technology is optional and eligible to customers who:
As of May 1, Delta uses numbered boarding zones for all flights to provide customers with more clarity about boarding sequence. We still offer pre-board opportunities for customers who need extra time or assistance, followed by active-duty military, then Delta 360 Members. Following pre-boarding, customers in Delta One or First Class will board in Zone 1, followed by Diamond Medallions and Delta Premium Select customers boarding in Zone 2. See the breakdown of boarding by zone.
Customer boarding pass (printed or digital in the Fly Delta app) for your boarding zone number, and follow along with the sequencing via airport screens and gate announcements. Zones 1-4 will board using the Sky Priority lane and Zones 5-8 will use the General Boarding lane.
At most U.S. airports, you can check your bags at a dedicated curbside counter, located at passenger drop-off on the Delta terminal. Check in and leave your luggage with our friendly service partners, then proceed straight to security once inside the airport.
Customers on full flights may be offered to check their carry-on bag pre-security when they check in at a kiosk, enabling a quicker boarding experience and a lighter journey through the airport. If prompted, check your carry-on in the lobby free of charge and move to your gate with ease.
Each operation that modifies a Delta Lake table creates a new table version. You can use history information to audit operations, rollback a table, or query a table at a specific point in time using time travel.
Databricks does not recommend using Delta Lake table history as a long-term backup solution for data archival. Databricks recommends using only the past 7 days for time travel operations unless you have set both data and log retention configurations to a larger value.
Catalog Explorer provides a visual view of this detailed table information and history for Delta tables. In addition to the table schema and sample data, you can click the History tab to see the table history that displays with DESCRIBE HISTORY.
Delta Lake time travel supports querying previous table versions based on timestamp or table version (as recorded in the transaction log). You can use time travel for applications such as the following:
Table versions accessible with time travel are determined by a combination of the retention threshold for transaction log files and the frequency and specified retention for VACUUM operations. If you run VACUUM daily with the default values, 7 days of data is available for time travel.
You can also use the @ syntax to specify the timestamp or version as part of the table name. The timestamp must be in yyyyMMddHHmmssSSS format. You can specify a version after @ by prepending a v to the version. See the following code for example syntax:
Delta Lake records table versions as JSON files within the _delta_log directory, which is stored alongside table data. To optimize checkpoint querying, Delta Lake aggregates table versions to Parquet checkpoint files, preventing the need to read all JSON versions of table history. Databricks optimizes checkpointing frequency for data size and workload. Users should not need to interact with checkpoints directly. The checkpoint frequency is subject to change without notice.
You must set both of these properties to ensure table history is retained for longer duration for tables with frequent VACUUM operations. For example, to access 30 days of historical data, set delta.deletedFileRetentionDuration = "interval 30 days" (which matches the default setting for delta.logRetentionDuration).
You can restore a Delta table to its earlier state by using the RESTORE command. A Delta table internally maintains historic versions of the table that enable it to be restored to an earlier state.A version corresponding to the earlier state or a timestamp of when the earlier state was created are supported as options by the RESTORE command.
You cannot restore a table to an older version where the data files were deleted manually or by vacuum. Restoring to this version partially is still possible if spark.sql.files.ignoreMissingFiles is set to true.
Restore is considered a data-changing operation. Delta Lake log entries added by the RESTORE command contain dataChange set to true. If there is a downstream application, such as a Structured streaming job that processes the updates to a Delta Lake table, the data change log entries added by the restore operation are considered as new data updates, and processing them may result in duplicate data.
In the preceding example, the RESTORE command results in updates that were already seen when reading the Delta table version 0 and 1. If a streaming query was reading this table, then these files will be considered as newly added data and will be processed again.
When this is called from inside MonoBehaviour.FixedUpdate, it returns Time.fixedDeltaTime. The maximum value for deltaTime is defined by Time.maximumDeltaTime.
deltaTime inside MonoBehaviour.OnGUI is not reliable, because Unity might call it multiple times per frame.
The following example rotates a GameObject around its z axis at a constant speed.
See Time and Frame Rate Management in the User Manual for more information about how this property relates to the other Time properties.
The following example implements a timer. The timer adds deltaTime each frame. The example displays the timer value and resets it when it reaches 2 seconds. Time.timeScale controls the speed at which time passes and how fast the timer resets.
Check-In: For existing customers, check-in for converted codeshare flights will now mirror the process for interline travel. Customers should check-in with the operating airline in their itinerary and will receive the boarding documents for the full itinerary at that time.
Any customers with questions can consult a Delta or Aeromexico representative at the airport for help with their full itinerary. If a customer has been reticketed, they will receive an email alerting them to the change.
Loyalty: Our loyalty programs will continue as normal, allowing customers to earn and claim miles. Delta and Aeromexico customers will continue having access to reciprocal loyalty benefits.
Safety: Delta and Aeromexico operations are both supported by the highest safety standards. Aeromexico successfully completed their last IATA Operational Safety Audit (IOSA) in 2020, the global hallmark for demonstrating a proactive, integrated and systematic approach to Operational Safety and Safety Management Systems, a certification they have maintained for more than 10 years and counting.
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