DL399Delta Air Lines · BOS → ATL
live · 7m ago
Route confirmed Delta Air Lines

DL399 BostonBOS AtlantaATL

DL399 by Delta Air Lines flies from Boston (BOS) to Atlanta (ATL).

Right nowNext departure today Operates daily
18:10

scheduled from BOS

The route today

live boards
BOSBostonOn-time likelyBOS delay board →
ATLAtlantaOn-time likelyATL delay board →
BOS→ATLevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Delay & cancellation outlook for this flight

Measured, 90-day sample
32%Chance of 15+ min delay
1.7%Chance of cancellation
+3 minTypical airport delay in this weather

Conditions at BOS and ATL are near their clear-air norm right now, so this reflects the route's recent baseline rather than a weather penalty. These figures come from both airports' records under conditions like today's, over the last 90 days.

Pro Flight Search tracking, 90 days · the weather × delay correlation study → · live weather risk by airport →

Tomorrow at BOS

Forecast

Thu 12 Nov, local date

High12°Clikely 10°C to 15°C
Low8°Clikely 6°C to 10°C
  • 96% chance of rain

Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.

Tomorrow at ATL

Forecast

Thu 12 Nov, local date

High18°Clikely 16°C to 20°C
Low12°Clikely 10°C to 13°C

Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.

When it flies

scheduled departures
061422
M
T
W
T
F
S
S

Each mark is a scheduled departure at its origin-local time. Today is highlighted.

Other Boston to Atlanta flights today

same route · Delta Air Lines
DL2242departs 05:30
DL695departs 06:50
DL923departs 08:00
DL456departs 09:05
DL1474departs 10:15
DL2779departs 12:20

If DL399 is cancelled, these are the other Delta Air Lines nonstop flights from Boston to Atlanta on the same day, with scheduled departure times in BOS local time. Most flights that show a delay still operate. Rebooking usually helps only when that delay is very large. Every airline on this route →

How DL399 actually runs

Pro Flight Search has tracked every published board update for DL399 across the BOS and ATL boards: schedule changes, gate pushes and actual clocks. Combined risk score: 33.0/100. Based on airport operations, weather, and cached board history at BOS and ATL.

The verdict above is that record speaking, so it reflects how DL399 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Planning around DL399? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure

Cite this data

Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.

Suggested citation

Pro Flight Search: DL399 Boston to Atlanta on-time performance, measured from the BOS and ATL airport boards.

Canonical URL
https://proflightsearch.com/flight/DL399
How we measure this →