Home / Routes / KSEA → KONT3,371 scheduled
SEA ONT2h 36m

The route from Seattle Tacoma International Airport (KSEA) in Seattle to Ontario International Airport (KONT) in Ontario. SkyMeter tracks roughly 3,371 scheduled flights on this route across 14 carriers. The most active operator is ASA (ASA). Average block time is 2h 26m. Departures average 30 minutes off schedule, with 60% running more than 15 minutes late. The most common aircraft on this route is the EMBRAER Embraer 175 long wing.

Scheduled
3,371
last 529 days
ADS-B observed
531
Airlines
14
Avg dep delay
30m
Late >15 min
60.3%
Cancel rate
0.89%

Airlines on this route

9 carriers · scheduled

Alaska Airlines
ASA · AS · 1,654 flights · avg 33m delay · 62.8% late
24 cancelled
Delta Air Lines
DAL · DL · 1,403 flights · avg 25m delay · 57.7% late
4 cancelled
Frontier Airlines
FFT · F9 · 275 flights · avg 39m delay · 61.8% late
2 cancelled
Air Transport International
ATN · 8C · 19 flights · avg 39m delay · 57.9% late
Concesionaria Vuela Compania De Aviacion S.a. De C.v
VOI · Y4 · 9 flights · avg 10m delay · 0.0% late
Sunset Aviation
TWY · 7 flights · avg 26m delay · 14.3% late
Sky West Aviation
SKW · OO · 2 flights · avg 11m delay · 0.0% late
Netjets Aviation
EJA · 1I · 1 flights · avg 21m delay · 100.0% late
United Parcel Service Company
UPS · 5X · 1 flights · avg 130m delay · 100.0% late

Recent observed flights

From ADS-B trace data

FFT2276N413FRA20N
2026-10-12 17:54  →  2026-10-12 20:16  ·  2h 22m
Replay
ASA592N912AKB39M
2026-10-10 22:21  →  2026-10-11 00:47  ·  2h 26m
Replay
SKW4031N301SYE75L
2026-10-10 21:20  →  2026-10-10 23:49  ·  2h 29m
Replay
ASA571N581ASB738
2026-10-10 18:42  →  2026-10-10 21:14  ·  2h 31m
Replay
ASA476N293AKB739
2026-10-10 14:21  →  2026-10-10 16:42  ·  2h 20m
Replay
ASA489N413ASB739
2026-10-10 04:02  →  2026-10-10 06:33  ·  2h 30m
Replay
ASA592N270AKB739
2026-10-09 22:21  →  2026-10-10 00:53  ·  2h 31m
Replay
SKW4031N291SYE75L
2026-10-09 21:31  →  2026-10-10 00:24  ·  2h 53m
Replay
ASA571N952AKB39M
2026-10-09 17:34  →  2026-10-09 19:59  ·  2h 25m
Replay
FFT2276N389FRA20N
2026-10-09 16:58  →  2026-10-09 20:03  ·  3h 5m
Replay

Codeshare partnerships

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

sells ASA 1236
sells DAL 663
sells DAL 635
sells ASA 554
sells DAL 399
sells DAL 369
sells ASA 352
sells FFT 170
sells DAL 152
sells DAL 15
sells ASA 1

Typical aircraft

Observed via ADS-B on this route

EMBRAER Embraer 175 long wing
E75L
37%
of flights
BOEING Boeing 737-900
B739
18%
of flights
BOEING Boeing 737 MAX 9
B39M
18%
of flights
BOEING Boeing 737-800
B738
8%
of flights
AIRBUS Airbus A321 Neo
A21N
6%
of flights
AIRBUS Airbus A320 Neo
A20N
4%
of flights
BOEING Boeing 737 MAX 8
B38M
4%
of flights
AIRBUS Airbus A321
A321
0%
of flights

Looking for the return flight?

View KONT → KSEA