Delta Air Lines DL521 Flight Status (Atlanta to Seattle)
According to real-time data from Trip.com, flight DL521, operated by Delta Air Lines and scheduled to fly from Atlanta (ATL to Seattle (SEA), has been cancelled. Please contact the airline or airport counter for the latest information.
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Canceled
Please refer to the airline for the latest information
5h 41m
Check-in Counter
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Boarding Gate
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Arrival Gate
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DL521 Aircraft Details and Cabin Information - Atlanta to Seattle on Delta Air Lines
Plane model info unavailable
Punctuality (Departure)
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Punctuality (Arrival)
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Early on average
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Economy
In-Flight Services
Unknown
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Seat Information
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Seat layout example
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Frequently Asked Questions
What is the current status of flight dl521?
Flight dl521 has been canceled (status: Canceled). Contact Delta Air Lines or your booking channel for rebooking or refund (updated Oct 22, 2026).Is flight dl521 on time today?
Flight dl521 has been canceled (status: Canceled). Contact Delta Air Lines or your booking channel for rebooking or refund options; if booked on Trip.com, use Manage Booking.What route does flight dl521 fly?
Flight dl521 is operated by Delta Air Lines from Atlanta (ATL) to Seattle (SEA). Typical flight time is about 5 hours41 minutes; operating days may include Thursday.How can I check real-time status for flight dl521?
Track flight dl521 on this Trip.com status page for live departure, arrival, gate and baggage updates. For push alerts on the go, open the same flight in the Trip.com App and turn on flight notifications.If flight dl521 is delayed or canceled, what should I do?
If dl521 is delayed or canceled, first confirm the latest status here (Canceled, updated Oct 22, 2026). Contact Delta Air Lines or your booking channel for rebooking or refund options, and check Trip.com Manage Booking if you booked on Trip.com.Has flight dl521 departed from Atlanta?
Flight dl521 has been canceled and did not depart from Atlanta (ATL). Contact Delta Air Lines or your booking channel for next steps.
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