Home / Routes / KDEN → KSEA9,901 scheduled
DEN SEA2h 46m

The route from Denver International Airport (KDEN) in Denver to Seattle Tacoma International Airport (KSEA) in Seattle. SkyMeter tracks roughly 9,901 scheduled flights on this route across 23 carriers. The most active operator is UAL (UAL). Average block time is 2h 28m. Departures average 34 minutes off schedule, with 53% running more than 15 minutes late. The most common aircraft on this route is the BOEING Boeing 737 MAX 8.

Scheduled
9,901
last 543 days
ADS-B observed
1,367
Airlines
23
Avg dep delay
34m
Late >15 min
53.1%
Cancel rate
0.52%

Airlines on this route

17 carriers · scheduled

United Airlines
UAL · UA · 2,809 flights · avg 30m delay · 50.8% late
13 cancelled
Alaska Airlines
ASA · AS · 2,309 flights · avg 35m delay · 52.2% late
15 cancelled
Southwest Airlines Co
SWA · WN · 2,046 flights · avg 38m delay · 66.6% late
9 cancelled
Delta Air Lines
DAL · DL · 1,555 flights · avg 36m delay · 42.4% late
9 cancelled
Frontier Airlines
FFT · F9 · 646 flights · avg 33m delay · 44.3% late
4 cancelled
Air Transport International
ATN · 8C · 501 flights · avg 39m delay · 61.3% late
Concesionaria Vuela Compania De Aviacion S.a. De C.v
VOI · Y4 · 18 flights · avg 10m delay · 0.0% late
Mn Airlines D/B/A Sun Country Airlines
SCX · SY · 4 flights · avg 31m delay · 100.0% late
American Airlines
AAL · AA · 4 flights · avg 95m delay · 50.0% late
Sky West Aviation
SKW · OO · 2 flights · avg 142m delay · 100.0% late
Airwork Holdings Limited
AWK · 1 flights · avg —m delay · 0.0% late
Dhl Air Limited
DHK · D0 · 1 flights · avg 52m delay · 100.0% late
· F2 · 1 flights · avg 0m delay · 0.0% late
Jag
JAG · AS · 1 flights · avg —m delay · 0.0% late
1 cancelled
Royal Air Freight
RAX · RAX · 1 flights · avg 10m delay · 0.0% late

Recent observed flights

From ADS-B trace data

SWA447N461WNB737
2026-10-26 17:42  →  2026-10-26 20:18  ·  2h 36m
Replay
ATN3395N313AZB763
2026-10-26 03:49  →  2026-10-26 06:33  ·  2h 43m
Replay
DAL2543N326DUBCS3
2026-10-26 01:41  →  2026-10-26 04:26  ·  2h 44m
Replay
UAL2767N14544A21N
2026-10-26 01:26  →  2026-10-26 04:10  ·  2h 43m
Replay
SWA3245N8905QB38M
2026-10-26 00:00  →  2026-10-26 02:32  ·  2h 31m
Replay
DAL1358N340DUBCS3
2026-10-25 19:47  →  2026-10-25 22:24  ·  2h 36m
Replay
FFT1175N651FRA21N
2026-10-25 19:02  →  2026-10-25 21:33  ·  2h 30m
Replay
UAL2302N73445B739
2026-10-25 18:24  →  2026-10-25 21:00  ·  2h 35m
Replay
ASA682N263AKB739
2026-10-25 17:56  →  2026-10-25 20:25  ·  2h 29m
Replay
SWA3109N8899HB38M
2026-10-25 17:51  →  2026-10-25 20:21  ·  2h 29m
Replay

Codeshare partnerships

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

sells ASA 1521
sells ASA 1341
sells ASA 890
sells ASA 889
sells DAL 725
sells ASA 704
sells DAL 487
sells DAL 478
sells ASA 454
sells ASA 435
sells DAL 414
sells FFT 403
sells UAL 358
sells ASA 358
sells UAL 274
sells DAL 241
sells DAL 131
sells ASA 92
sells ASA 77
sells UAL 63

Typical aircraft

Observed via ADS-B on this route

BOEING Boeing 737 MAX 8
B38M
17%
of flights
BOEING Boeing 737-800
B738
16%
of flights
BOEING Boeing 737 MAX 9
B39M
15%
of flights
BOEING Boeing 737-900
B739
13%
of flights
AIRBUS-BOMBARDIER Airbus A220-300
BCS3
11%
of flights
AIRBUS Airbus A321 Neo
A21N
11%
of flights
BOEING Boeing 767-300
B763
5%
of flights
BOEING Boeing 737-700
B737
4%
of flights

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View KSEA → KDEN