No delays reported for DL 688 (JFK → SEA) as of 6:45 PM ET. It arrived on time 71.6% of the time in June-August 2026. When it was late, the average delay was 1h 33m. 4.3% of flights were cancelled. Right now there are no reported delays at JFK, SEA.
Looks on time
Next leg JFK → SEA, scheduled 7:35 PM local time. No delays at JFK right now.
Cancellation risk: Medium 4.3% of its flights were cancelled in June-August 2026.
Estimate from the schedule, live position and airport conditions, if this flight operates today. Check Delta for official times.
Before you fly
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Route and schedule
| Leg | Scheduled | On time |
|---|---|---|
| JFK → SEA New York, NY to Seattle, WA | 7:35 PM → 11:08 PM | 72% |
Local times. Schedules change; check your booking.
How reliable is DL 688?
| Arrived on time (within 15 min) | 71.6% |
| Average delay when late | 93 min |
| Cancelled | 4.3% |
| Diverted | 0% |
| Flights tracked | 92 |
Best and worst days to fly DL 688
DL 688 was most reliable on Wednesdays (77% on time) and least reliable on Saturdays (50%).
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Why it runs late
| Late-arriving plane | |
| Airline (crew, maintenance) | |
| Air traffic system | |
| Extreme weather |
Share of delay minutes by cause, as reported by Delta to the Department of Transportation.
Other flights JFK → SEA
All flights on this route, ranked
Live status at its airports
We show airport-wide airport status, not this flight's gate or live position. For that, check the Delta app.
Delta delays and what you're owed · Airline phone numbers
About this data
On-time history: U.S. Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, June-August 2026. Live conditions: live airport status. "On time" means arriving within 15 minutes of schedule.
Common questions
Is DL 688 delayed today?
Right now there are no reported delays at JFK, SEA. Checked 6:45 PM ET. For this flight's gate and exact status, check the Delta app.
Is DL 688 usually on time?
DL 688 arrived within 15 minutes of schedule 71.6% of the time in June-August 2026, with an average delay of 93 minutes when late.
How often is DL 688 cancelled?
4.3% of DL 688 flights were cancelled in June-August 2026.