Home / Routes / KIAD → KSEA2,294 scheduled
IAD SEA5h 34m

The route from Washington Dulles International Airport (KIAD) in Washington, DC to Seattle Tacoma International Airport (KSEA) in Seattle. SkyMeter tracks roughly 2,294 scheduled flights on this route across 14 carriers. The most active operator is ASA (ASA). Average block time is 5h 19m. Departures average 29 minutes off schedule, with 56% running more than 15 minutes late. The most common aircraft on this route is the BOEING Boeing 737 MAX 9.

Scheduled
2,294
last 494 days
ADS-B observed
527
Airlines
14
Avg dep delay
29m
Late >15 min
56.2%
Cancel rate
0.52%

Airlines on this route

11 carriers · scheduled

Alaska Airlines
ASA · AS · 1,000 flights · avg 28m delay · 56.6% late
4 cancelled
United Airlines
UAL · UA · 871 flights · avg 31m delay · 68.0% late
4 cancelled
Delta Air Lines
DAL · DL · 410 flights · avg 24m delay · 31.5% 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
· ABC · 1 flights · avg 0m delay · 0.0% late

Recent observed flights

From ADS-B trace data

UAL2799N68821B739
2026-09-08 16:54  →  2026-09-08 22:20  ·  5h 26m
Replay
ASA375N434ASB739
2026-09-08 13:09  →  2026-09-08 18:33  ·  5h 23m
Replay
ASA1574N277AKB739
2026-09-08 11:11  →  2026-09-08 16:32  ·  5h 21m
Replay
DAL1015N325DUBCS3
2026-09-08 10:37  →  2026-09-08 16:43  ·  6h 6m
Replay
UAL2799N17336B38M
2026-09-06 17:19  →  2026-09-06 22:46  ·  5h 27m
Replay
ASA375N461ASB739
2026-09-06 13:01  →  2026-09-06 18:23  ·  5h 22m
Replay
ASA375N278AKB739
2026-09-05 13:10  →  2026-09-05 18:32  ·  5h 22m
Replay
ASA1574N270AKB739
2026-09-05 11:58  →  2026-09-05 17:10  ·  5h 12m
Replay
DAL1015N325DUBCS3
2026-09-05 11:16  →  2026-09-05 16:43  ·  5h 27m
Replay
UAL1128N27463B39M
2026-09-05 01:15  →  2026-09-05 06:28  ·  5h 13m
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
29%
of flights
AIRBUS-BOMBARDIER Airbus A220-300
BCS3
14%
of flights
BOEING Boeing 737-800
B738
7%
of flights
BOEING Boeing 737 MAX 8
B38M
2%
of flights
GULFSTREAM AEROSPACE Gulfstream G280
G280
0%
of flights
AIRBUS Airbus A320
A320
0%
of flights

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