Home / Routes / KIAD → KSEA2,191 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 2,191 scheduled flights on this route across 13 carriers. The most active operator is ASA (ASA). Average block time is 5h 26m. Departures average 28 minutes off schedule, with 57% running more than 15 minutes late. The most common aircraft on this route is the BOEING Boeing 737 MAX 9.

Scheduled
2,191
last 473 days
ADS-B observed
550
Airlines
13
Avg dep delay
28m
Late >15 min
57.1%
Cancel rate
0.55%

Airlines on this route

11 carriers · scheduled

Alaska Airlines
ASA · AS · 949 flights · avg 28m delay · 57.5% late
4 cancelled
United Airlines
UAL · UA · 835 flights · avg 31m delay · 69.2% late
4 cancelled
Delta Air Lines
DAL · DL · 394 flights · avg 24m delay · 31.7% 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

UAL2799N75426B739
2026-08-19 17:25  →  2026-08-19 22:46  ·  5h 21m
Replay
UAL2799N53441B739
2026-08-18 17:19  →  2026-08-18 22:46  ·  5h 27m
Replay
ASA361N720ALB39M
2026-08-18 13:31  →  2026-08-18 19:03  ·  5h 31m
Replay
DAL1015N322DUBCS3
2026-08-18 11:11  →  2026-08-18 16:50  ·  5h 38m
Replay
ASA409N275AKB739
2026-08-18 10:03  →  2026-08-18 15:45  ·  5h 41m
Replay
ASA737N272AKB739
2026-08-17 23:33  →  2026-08-18 05:23  ·  5h 49m
Replay
UAL1128N77584B39M
2026-08-17 21:58  →  2026-08-18 04:05  ·  6h 6m
Replay
UAL2799N61881B739
2026-08-17 17:17  →  2026-08-17 23:04  ·  5h 46m
Replay
ASA361N291BTB39M
2026-08-17 13:26  →  2026-08-17 18:59  ·  5h 32m
Replay
DAL1015N329DUBCS3
2026-08-17 10:55  →  2026-08-17 16:36  ·  5h 40m
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
48%
of flights
BOEING Boeing 737-900
B739
27%
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
1%
of flights
GULFSTREAM AEROSPACE Gulfstream G280
G280
0%
of flights
BOEING Boeing 757-200
B752
0%
of flights

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