DL321Delta Air Lines · BOS → LAX
live · 15m ago
Route confirmed Delta Air Lines

DL321 BostonBOS Los AngelesLAX

DL321 by Delta Air Lines flies from Boston (BOS) to Los Angeles (LAX).

Right nowNext departure tomorrow Operates daily
20:35

scheduled from BOS

The route today

live boards
BOSBostonOn-time likelyBOS delay board →
LAXLos AngelesOn-time likelyLAX delay board →
BOS→LAXevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Delay & cancellation outlook for this flight

Measured, 90-day sample
42%Chance of 15+ min delay
2.7%Chance of cancellation
+6 minTypical airport delay in this weather

Conditions at BOS and LAX 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 Boston

Forecast

Wed 4 Nov, local date

High23°Clikely 22°C to 25°C
Low14°Clikely 12°C to 15°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.

Tomorrow at Los Angeles

Forecast

Wed 4 Nov, local date

High23°Clikely 22°C to 24°C
Low15°Clikely 14°C to 16°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 Los Angeles flights today

same route · Delta Air Lines
DL479departs 06:15
DL2004departs 10:55
DL508departs 16:20
DL610departs 20:38

If DL321 is cancelled, these are the other Delta Air Lines nonstop flights from Boston to Los Angeles 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 DL321 actually runs

Pro Flight Search has tracked every published board update for DL321 across the BOS and LAX 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 LAX.

The verdict above is that record speaking, so it reflects how DL321 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Planning around DL321? 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: DL321 Boston to Los Angeles on-time performance, measured from the BOS and LAX airport boards.

Canonical URL
https://proflightsearch.com/flight/DL321
How we measure this →