Home / Routes / KSEA → KONT3,035 scheduled
SEA ONT2h 32m

The route from Seattle Tacoma International Airport (KSEA) in Seattle to Ontario International Airport (KONT) in Ontario. SkyMeter tracks roughly 3,035 scheduled flights on this route across 13 carriers. The most active operator is ASA (ASA). Average block time is 2h 31m. Departures average 30 minutes off schedule, with 64% running more than 15 minutes late. The most common aircraft on this route is the EMBRAER Embraer 175 long wing.

Scheduled
3,035
last 480 days
ADS-B observed
598
Airlines
13
Avg dep delay
30m
Late >15 min
63.5%
Cancel rate
0.99%

Airlines on this route

9 carriers · scheduled

Alaska Airlines
ASA · AS · 1,490 flights · avg 33m delay · 65.9% late
24 cancelled
Delta Air Lines
DAL · DL · 1,273 flights · avg 25m delay · 60.6% late
4 cancelled
Frontier Airlines
FFT · F9 · 234 flights · avg 42m delay · 67.5% late
2 cancelled
Air Transport International
ATN · 8C · 18 flights · avg 41m delay · 61.1% 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

ASA571N403ASB739
2026-08-26 18:42  →  2026-08-26 21:27  ·  2h 44m
Replay
FFT2276N669FRA21N
2026-08-26 18:35  →  2026-08-26 21:51  ·  3h 16m
Replay
SKW3884N288SYE75L
2026-08-26 02:47  →  2026-08-26 05:13  ·  2h 26m
Replay
ASA571N294AKB739
2026-08-25 18:38  →  2026-08-25 21:05  ·  2h 27m
Replay
FFT2276N365FRA20N
2026-08-25 18:32  →  2026-08-25 21:51  ·  3h 19m
Replay
SKW4070N294SYE75L
2026-08-25 15:15  →  2026-08-25 18:13  ·  2h 57m
Replay
ASA489N712ALB39M
2026-08-25 05:15  →  2026-08-25 07:44  ·  2h 28m
Replay
SKW3884N303SYE75L
2026-08-25 02:55  →  2026-08-25 05:43  ·  2h 47m
Replay
ASA592N932AKB39M
2026-08-25 02:02  →  2026-08-25 04:45  ·  2h 43m
Replay
ASA571N236AKB739
2026-08-24 20:52  →  2026-08-24 23:36  ·  2h 44m
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
36%
of flights
BOEING Boeing 737-900
B739
18%
of flights
BOEING Boeing 737 MAX 9
B39M
17%
of flights
AIRBUS Airbus A321 Neo
A21N
9%
of flights
BOEING Boeing 737-800
B738
8%
of flights
BOEING Boeing 737 MAX 8
B38M
7%
of flights
AIRBUS Airbus A321
A321
1%
of flights
AIRBUS Airbus A320 Neo
A20N
0%
of flights

Looking for the return flight?

View KONT → KSEA