DL459Delta Air Lines · SEA → BOS
live · 3m 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 Thu, Oct 29 departure.

Right nowTaxiing out at Seattle · off blocks
15:42

estimated arrival at BOS · local time

LivePosition · updated 3m ago
SEASeattleBOSBoston
Taxiing out at SEA2,489 mi flight ahead
0 ftAltitudeon the ground
9 mphSpeed8 kt
323°Direction

Live position · on the ground at SEA, taxiing for departure.

Typical arrival−13 minmedian over 5 operations

Where the minutes go

last 5 operations · gate push → arrival
0+30+60+90 min
10-29
−18 arrival
10-28
−31 arrival
10-27
−13 arrival
10-26
−9 arrival
10-25
−5 arrival

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

The last 30 days

arrival outcome per operation

median arrival −13 min · 0 cancelled · 5 operations tracked

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
39%Chance of 15+ min delay
3.0%Chance of cancellation
+7 minTypical airport delay in this weather

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. 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 on this route

Forecast

Seattle to Boston with Delta Air Lines · Fri 30 Oct, local date

Outlook: about usual
Chance a departure is cancelled
0.5%0.7× usual
Chance a departure leaves 60+ min late
19%0.9× usual

Forecast weather: 82% chance of rain at Seattle

Forecast: WeatherTomorrow · incl. data from ECMWF (CC BY 4.0, modified) · About 3 departures a day on this route with this airline. · 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 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 that show a delay still operate. Rebooking usually helps only when that delay is very large. 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. Usually lands ~11 min early. Based on 4 confirmed landings · 4/4 within 15 min of schedule.

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
10-29SEA 07:24BOS 16:00 15:42 (−18)
10-28SEA 07:24BOS 16:00 15:29 (−31)
10-27SEA 07:24BOS 16:00 15:47 (−13)
10-26SEA 07:24BOS 16:00 15:51 (−9)
10-25SEA BOS 16:00 15:55 (−5)

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 →