My trip
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Tell FlyerIntel where and when you are flying. It will show how that route actually performs at that time of day and on that day of the week, what both airports are doing right now, and when to get to the airport.
SEA → ATL
Seattle to Atlanta · departing 11:55 AM
SEA → ATL flights departing 9 AM–12 PM arrive on time 76.7% of the time, against 81.8% across the whole day — your departure window is 5.1 points worse than average for this route.
There is no day-by-hour view for SEA → ATL: only 33 of its weekday-and-hour slots have 120 or more flights, and a day-by-hour view needs 45.
Other times on SEA → ATL
Time of day
On SEA → ATL, flights leaving 5–9 AM arrived on time 87.5% of the time, against 76.7% for those leaving 9 AM–12 PM: 10.8 points more often.
- 5–9 AM87.5%
- 9 AM–12 PM76.7%
- 12–3 PM80.3%
- 3–6 PM80.3%
- 6–9 PMToo few flights to score
- 9 PM–5 AM80.8%
Day of week
- Monday82.0%
- Tuesday84.6%
- Wednesday84.7%
- Thursday82.3%
- Friday80.5%
- Saturday81.3%
- Sunday77.9%
Bars start below the lowest figure so a real gap is visible; read the percentage, not the bar length. A time with too few flights to score is left unscored rather than guessed at.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · History describes what has happened on this route. It is not a prediction about your flight. Full route profile →
Which flight
Flights on SEA → ATL, the ones scheduled closest to 11:55 AM first.
Within 90 minutes of 11:55 AM, DL542 (usually 11:55 AM) has the best record: 81.3% on time and 0.66% cancelled over 755 flights, against 81.8% on time for SEA → ATL as a whole.
| Flight | Usually departs | On time | Cancelled |
|---|---|---|---|
| DL542Delta Air LinesLive map | 11:55 AM | 81.3% | 0.66% |
| DL554Delta Air LinesLive map | 11:30 AM25 min away | 80.8% | 0.00% |
| AS727Alaska AirlinesLive map | 9:22 AM153 min away | 81.1% | 1.16% |
| DL560Delta Air LinesLive map | 3:15 PM200 min away | 85.0% | 0.58% |
| DL562Delta Air LinesLive map | 7:15 AM280 min away | 83.7% | 1.03% |
| AS334Alaska AirlinesLive map | 6:30 AM325 min away | 75.9% | 1.47% |
| DL569Delta Air LinesLive map | 6:00 AM355 min away | 91.7% | 0.43% |
| DL567Delta Air LinesLive map | 9:45 PM590 min away | 82.2% | 1.09% |
| DL652Delta Air LinesLive map | 11:35 PM700 min away | 81.7% | 1.27% |
| AS464Alaska AirlinesLive map | 11:59 PM716 min away | 78.4% | 0.51% |
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · “Usually departs” is the scheduled time each flight number most often had over the period; airlines retime flights, so confirm the time on your booking. Flight numbers with fewer than 90 operations on this route are left out. This is history, not a forecast for your flight.
When to get to the airport
A starting point for SEA, not a promise about your day.
2h 20m before your 11:55 AM departure
How this was worked out
- It does not include your journey to the airport, parking, or a shuttle from a remote lot.
- International departures, and travel with children, checked pets or special assistance, need more time.
Both airports right now
Weather conditions are strongly associated with delays and cancellations.
Severe operational impact. Conditions of this kind are strongly associated with delays and cancellations.
- Visibility 3 statute miles.
- Cloud ceiling 100 feet.
Aviation weather is not currently a factor.
Minimal operational impact. Conditions are not a notable factor for operations right now.
UpdatedSource: NOAA Aviation Weather Center · Conditions describe the airfield, not your flight, and change quickly.
Who flies this route
Performance by the carrier that actually operates the flight.
| Carrier | Flights | On time | Cancelled | Median delay |
|---|---|---|---|---|
| Delta Air Lines | 7,458 | 83.8% | 0.71% | -8 min |
| Alaska Airlines | 3,137 | 77.1% | 0.86% | -3 min |