Home / Routes / KIAD → KSEA2,022 scheduled
IAD SEA5h 33m

The route from Washington Dulles International Airport (KIAD) in Washington, DC to Seattle Tacoma International Airport (KSEA) in Seattle. SkyMeter tracks roughly 2,022 scheduled flights on this route across 14 carriers. The most active operator is ASA (ASA). Average block time is 5h 39m. Departures average 28 minutes off schedule, with 59% running more than 15 minutes late. The most common aircraft on this route is the BOEING Boeing 737 MAX 9.

Scheduled
2,022
last 445 days
ADS-B observed
519
Airlines
14
Avg dep delay
28m
Late >15 min
59.3%
Cancel rate
0.54%

Airlines on this route

10 carriers · scheduled

Alaska Airlines
ASA · AS · 872 flights · avg 28m delay · 59.9% late
4 cancelled
United Airlines
UAL · UA · 768 flights · avg 31m delay · 72.4% late
3 cancelled
Delta Air Lines
DAL · DL · 370 flights · avg 24m delay · 32.2% late
4 cancelled
Netjets Aviation
EJA · 1I · 6 flights · avg 16m delay · 33.3% late
Jet Linx Aviation
JTL · JL · 1 flights · avg —m delay · 0.0% late
Qatar Executive
QQE · QE · 1 flights · avg 10m delay · 0.0% late
Presidential Aviation
PRD · 1 flights · avg —m delay · 0.0% late
Fltplan
DCM · 1 flights · avg 10m delay · 0.0% late
Korean Air Lines Co. Ltd
KAL · KE · 1 flights · avg 10m delay · 0.0% late
American Airlines
AAL · AA · 1 flights · avg 38m delay · 100.0% late

Recent observed flights

From ADS-B trace data

UAL2241N27419B39M
2026-07-19 17:11  →  2026-07-19 22:32  ·  5h 21m
Replay
ASA361N468ASB739
2026-07-19 13:33  →  2026-07-19 18:59  ·  5h 25m
Replay
UAL8201N76288B738
2026-07-19 12:55  →  2026-07-19 18:36  ·  5h 40m
Replay
DAL1015N319DUBCS3
2026-07-19 11:04  →  2026-07-19 16:46  ·  5h 41m
Replay
ASA409N491ASB739
2026-07-19 10:13  →  2026-07-19 15:32  ·  5h 18m
Replay
ASA737N971AKB39M
2026-07-18 22:28  →  2026-07-19 03:58  ·  5h 30m
Replay
UAL2241N17459B39M
2026-07-18 17:11  →  2026-07-18 23:04  ·  5h 53m
Replay
ASA361N947AKB39M
2026-07-18 13:27  →  2026-07-18 18:55  ·  5h 28m
Replay
UAL2101N27205B738
2026-07-18 13:11  →  2026-07-18 18:57  ·  5h 45m
Replay
DAL1015N337DUBCS3
2026-07-18 10:52  →  2026-07-18 16:18  ·  5h 26m
Replay

Codeshare partnerships

Marketing carriers selling tickets on this route under their own flight numbers

sells ASA 823
sells ASA 815
sells ASA 785
sells ASA 720
sells UAL 359
sells ASA 359
sells UAL 359
sells UAL 358
sells UAL 358
sells DAL 355
sells DAL 355
sells UAL 345
sells UAL 331
sells ASA 225
sells ASA 171
sells ASA 69
sells UAL 43
sells DAL 18

Typical aircraft

Observed via ADS-B on this route

BOEING Boeing 737 MAX 9
B39M
45%
of flights
BOEING Boeing 737-900
B739
27%
of flights
AIRBUS-BOMBARDIER Airbus A220-300
BCS3
15%
of flights
BOEING Boeing 737-800
B738
5%
of flights
BOEING Boeing 737 MAX 8
B38M
3%
of flights
AIRBUS Airbus A319
A319
0%
of flights
BOEING Boeing 757-200
B752
0%
of flights
GULFSTREAM AEROSPACE Gulfstream G280
G280
0%
of flights

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