DL459Delta Air Lines · SEA → BOS
live · 4m ago
Route confirmed Delta Air Lines

DL459 SeattleSEA · 07:24 BostonBOS · 16:00

DL459 by Delta Air Lines flies from Seattle (SEA) to Boston (BOS) for the Fri, Oct 23 departure.

Right nowOn time · gate A10
07:24

departs SEA · on schedule

Typical arrival+9 minmedian over 4 operations

Where the minutes go

last 4 operations · gate push → arrival
0+30+60+90 min
10-23
−18 arrival
10-22
−18 arrival
10-21
+9 arrival
10-20
+13 arrival

The bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.

The route today

live boards
SEASeattleModerate riskSEA delay board →
BOSBostonOn-time likelyBOS delay board →
SEA→BOSevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Delay & cancellation outlook for this flight

Measured, 90-day sample
41%Chance of 15+ min delay
3.1%Chance of cancellation
+9 minAvg hub delay right now

Conditions at SEA and BOS are near their clear-air norm right now, so this reflects the route's recent baseline rather than a weather penalty. For this route and airline, 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 →

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 Seattle to Boston flights today

same route · Delta Air Lines
DL438departs 11:08
DL474departs 15:30
DL473departs 23:10

If DL459 is cancelled, these are the other Delta Air Lines nonstop flights from Seattle to Boston on the same day, with scheduled departure times in SEA local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →

How DL459 actually runs

Pro Flight Search has tracked every published board update for DL459 across the SEA and BOS boards: schedule changes, gate pushes and actual clocks. Early read — pattern not clear yet. Only 3 completed legs so far: landed -18 min. Not enough to call it.

The verdict above is that record speaking, so it reflects how DL459 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Technical record

How this operation is measured

board clocks

Board log

scheduled → actual, per operation
10-23SEA 07:24BOS 16:00 15:42 (−18)
10-22SEA 07:24BOS 16:00 15:42 (−18)
10-21SEA 07:24BOS 16:00 16:09 (+9)
10-20SEA BOS 16:00 16:13 (+13)

Board clocks recorded as SEA and BOS published them.

Planning around DL459? 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 — DL459 Seattle to Boston on-time performance, measured from the SEA and BOS airport boards.

Canonical URL
https://proflightsearch.com/flight/DL459
How we measure this →