Home / Routes / KONT → KSEA3,046 scheduled
ONT SEA2h 29m

The route from Ontario International Airport (KONT) in Ontario to Seattle Tacoma International Airport (KSEA) in Seattle. SkyMeter tracks roughly 3,046 scheduled flights on this route across 16 carriers. The most active operator is ASA (ASA). Average block time is 2h 36m. Departures average 20 minutes off schedule, with 34% running more than 15 minutes late. The most common aircraft on this route is the EMBRAER Embraer 175 long wing.

Scheduled
3,046
last 487 days
ADS-B observed
535
Airlines
16
Avg dep delay
20m
Late >15 min
33.7%
Cancel rate
0.82%

Airlines on this route

7 carriers · scheduled

Alaska Airlines
ASA · AS · 1,499 flights · avg 22m delay · 39.4% late
21 cancelled
Delta Air Lines
DAL · DL · 1,277 flights · avg 16m delay · 28.7% late
3 cancelled
Frontier Airlines
FFT · F9 · 235 flights · avg 20m delay · 26.4% late
1 cancelled
Air Transport International
ATN · 8C · 22 flights · avg 17m delay · 31.8% late
Concesionaria Vuela Compania De Aviacion S.a. De C.v
VOI · Y4 · 9 flights · avg 10m delay · 0.0% late
Sunset Aviation
TWY · 3 flights · avg 10m delay · 0.0% late
Sky West Aviation
SKW · OO · 1 flights · avg 86m delay · 100.0% late

Recent observed flights

From ADS-B trace data

ASA654N954AKB39M
2026-09-02 18:53  →  2026-09-02 21:22  ·  2h 29m
Replay
SKW4070N256SYE75L
2026-09-02 18:47  →  2026-09-02 21:19  ·  2h 31m
Replay
SKW3816N262SYE75L
2026-09-02 13:17  →  2026-09-02 16:07  ·  2h 50m
Replay
ASA607N724ALB39M
2026-09-02 12:53  →  2026-09-02 15:17  ·  2h 23m
Replay
SKW4031N304SYE75L
2026-09-02 02:00  →  2026-09-02 04:39  ·  2h 38m
Replay
ASA575N592ASB738
2026-09-01 22:47  →  2026-09-02 01:16  ·  2h 29m
Replay
FFT2275N663FRA21N
2026-09-01 22:31  →  2026-09-02 02:30  ·  3h 59m
Replay
ASA654N215AKB739
2026-09-01 19:08  →  2026-09-01 21:31  ·  2h 22m
Replay
SKW4070N297SYE75L
2026-09-01 18:48  →  2026-09-01 21:08  ·  2h 19m
Replay
SKW3816N304SYE75L
2026-09-01 13:20  →  2026-09-01 15:59  ·  2h 38m
Replay

Codeshare partnerships

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

sells ASA 1232
sells DAL 787
sells DAL 766
sells ASA 669
sells DAL 566
sells DAL 512
sells ASA 342
sells DAL 304
sells FFT 177
sells ASA 28
sells DAL 6
sells DAL 6
sells DAL 6

Typical aircraft

Observed via ADS-B on this route

EMBRAER Embraer 175 long wing
E75L
40%
of flights
BOEING Boeing 737-900
B739
18%
of flights
BOEING Boeing 737 MAX 9
B39M
16%
of flights
AIRBUS Airbus A321 Neo
A21N
9%
of flights
BOEING Boeing 737-800
B738
8%
of flights
BOEING Boeing 737 MAX 8
B38M
4%
of flights
AIRBUS Airbus A321
A321
1%
of flights
AIRBUS Airbus A320 Neo
A20N
0%
of flights

Looking for the return flight?

View KSEA → KONT