Home / Routes / KIAD → KSEA2,799 scheduled
IAD SEA5h 35m

The route from Washington Dulles International Airport (KIAD) in Washington, DC to Seattle Tacoma International Airport (KSEA) in Seattle. SkyMeter tracks roughly 2,799 scheduled flights on this route across 13 carriers. The most active operator is ASA (ASA). Average block time is 4h 45m. Departures average 28 minutes off schedule, with 50% running more than 15 minutes late. The most common aircraft on this route is the BOEING Boeing 737 MAX 9.

Scheduled
2,799
last 543 days
ADS-B observed
412
Airlines
13
Avg dep delay
28m
Late >15 min
49.5%
Cancel rate
0.43%

Airlines on this route

12 carriers · scheduled

Alaska Airlines
ASA · AS · 1,243 flights · avg 27m delay · 49.5% late
4 cancelled
United Airlines
UAL · UA · 1,042 flights · avg 30m delay · 60.7% late
4 cancelled
Delta Air Lines
DAL · DL · 499 flights · avg 23m delay · 27.1% late
4 cancelled
Netjets Aviation
EJA · 1I · 6 flights · avg 16m delay · 33.3% late
· N5 · 2 flights · avg 0m delay · 0.0% 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

ASA737N266AKB739
2026-10-25 21:39  →  2026-10-26 03:10  ·  5h 30m
Replay
ASA375N495ASB739
2026-10-25 13:41  →  2026-10-25 18:56  ·  5h 15m
Replay
ASA409N938AKB39M
2026-10-25 11:03  →  2026-10-25 16:18  ·  5h 15m
Replay
DAL1015N324DUBCS3
2026-10-25 11:02  →  2026-10-25 16:27  ·  5h 24m
Replay
UAL1128N35271B738
2026-10-24 21:57  →  2026-10-25 03:31  ·  5h 33m
Replay
UAL1824N77587B39M
2026-10-24 16:59  →  2026-10-24 22:23  ·  5h 23m
Replay
ASA375N402ASB739
2026-10-24 13:43  →  2026-10-24 19:04  ·  5h 21m
Replay
ASA409N953AKB39M
2026-10-24 11:00  →  2026-10-24 16:28  ·  5h 27m
Replay
DAL1015N335DUBCS3
2026-10-24 11:00  →  2026-10-24 16:44  ·  5h 44m
Replay
UAL1128N17454B39M
2026-10-23 21:50  →  2026-10-24 03:23  ·  5h 33m
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
41%
of flights
BOEING Boeing 737-900
B739
34%
of flights
AIRBUS-BOMBARDIER Airbus A220-300
BCS3
14%
of flights
BOEING Boeing 737-800
B738
5%
of flights
BOEING Boeing 737 MAX 8
B38M
2%
of flights
AIRBUS Airbus A320
A320
0%
of flights
BOMBARDIER Bombardier (Canadair) Challenger 300
CL30
0%
of flights
BOEING Boeing 737-700
B737
0%
of flights

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