Delta Air Lines flights from Seattle-Tacoma (SEA) to Ontario, Los Angeles (ONT).

Ad box here 7322741189 I FlightInfo Top Box
Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Daily 19:55 Seattle-Tacoma (SEA) 22:40 Ontario, Los Angeles (ONT) 2
Delta Air Lines DL 1056 Non-stop Airbus A220-300 (223) 2:45 Effective 2026-04-13 through 2026-05-06
Daily 14:30 Seattle-Tacoma (SEA) 17:08 Ontario, Los Angeles (ONT) 2
Delta Air Lines DL 3834 Non-stop Embraer EMB 175 (E7W) 2:38 Valid until 2026-01-04
Daily 10:00 Seattle-Tacoma (SEA) 12:49 Ontario, Los Angeles (ONT) 2
Delta Air Lines DL 3840 Non-stop Embraer EMB 175 (E7W) 2:49 Effective 2026-05-07 through 2026-10-05
Daily 10:00 Seattle-Tacoma (SEA) 12:54 Ontario, Los Angeles (ONT) 2
Delta Air Lines DL 3840 Non-stop Embraer EMB 175 (E7W) 2:54 Effective from 2026-10-06
Daily 19:55 Seattle-Tacoma (SEA) 22:40 Ontario, Los Angeles (ONT) 2
Delta Air Lines DL 3884 Non-stop Embraer EMB 175 (E7W) 2:45 Effective 2026-05-07 through 2026-10-05
Daily 19:55 Seattle-Tacoma (SEA) 22:43 Ontario, Los Angeles (ONT) 2
Delta Air Lines DL 3987 Non-stop Embraer EMB 175 (E7W) 2:48 Effective from 2026-10-06
Daily 19:50 Seattle-Tacoma (SEA) 22:33 Ontario, Los Angeles (ONT) 2
Delta Air Lines DL 4027 Non-stop Embraer EMB 175 (E7W) 2:43 Effective 2026-03-08 through 2026-03-14
Daily 19:50 Seattle-Tacoma (SEA) 22:34 Ontario, Los Angeles (ONT) 2
Delta Air Lines DL 4027 Non-stop Embraer EMB 175 (E7W) 2:44 Effective 2026-03-15 through 2026-04-12
Daily 19:55 Seattle-Tacoma (SEA) 22:37 Ontario, Los Angeles (ONT) 2
Delta Air Lines DL 4027 Non-stop Embraer EMB 175 (E7W) 2:42 Effective 2026-02-12 through 2026-03-07
Daily 20:00 Seattle-Tacoma (SEA) 22:44 Ontario, Los Angeles (ONT) 2
Delta Air Lines DL 4027 Non-stop Embraer EMB 175 (E7W) 2:44 Effective 2026-02-01 through 2026-02-11
Mon,Tue,Fri-Sun 20:07 Seattle-Tacoma (SEA) 22:49 Ontario, Los Angeles (ONT) 2
Delta Air Lines DL 4027 Non-stop Embraer EMB 175 (E7W) 2:42 Valid until 2026-01-04
Daily 20:07 Seattle-Tacoma (SEA) 22:51 Ontario, Los Angeles (ONT) 2
Delta Air Lines DL 4027 Non-stop Embraer EMB 175 (E7W) 2:44 Effective 2026-01-05 through 2026-01-31
Daily 11:15 Seattle-Tacoma (SEA) 13:56 Ontario, Los Angeles (ONT) 2
Delta Air Lines DL 4031 Non-stop Embraer EMB 175 (E7W) 2:41 Effective 2026-01-05 through 2026-02-11
Daily 11:15 Seattle-Tacoma (SEA) 13:54 Ontario, Los Angeles (ONT) 2
Delta Air Lines DL 4031 Non-stop Embraer EMB 175 (E7W) 2:39 Effective 2026-02-12 through 2026-03-07
Daily 14:30 Seattle-Tacoma (SEA) 17:12 Ontario, Los Angeles (ONT) 2
Delta Air Lines DL 4031 Non-stop Embraer EMB 175 (E7W) 2:42 Effective 2026-03-08 through 2026-03-14
Daily 14:30 Seattle-Tacoma (SEA) 17:13 Ontario, Los Angeles (ONT) 2
Delta Air Lines DL 4031 Non-stop Embraer EMB 175 (E7W) 2:43 Effective 2026-03-15 through 2026-04-12
Daily 14:35 Seattle-Tacoma (SEA) 17:16 Ontario, Los Angeles (ONT) 2
Delta Air Lines DL 4031 Non-stop Embraer EMB 175 (E7W) 2:41 Effective 2026-04-13 through 2026-10-05
Daily 14:35 Seattle-Tacoma (SEA) 17:17 Ontario, Los Angeles (ONT) 2
Delta Air Lines DL 4031 Non-stop Embraer EMB 175 (E7W) 2:42 Effective from 2026-10-06
Mon,Tue,Fri-Sun 08:15 Seattle-Tacoma (SEA) 11:02 Ontario, Los Angeles (ONT) 2
Delta Air Lines DL 4070 Non-stop Embraer EMB 175 (E7W) 2:47 Valid until 2026-01-04
Daily 08:25 Seattle-Tacoma (SEA) 11:14 Ontario, Los Angeles (ONT) 2
Delta Air Lines DL 4070 Non-stop Embraer EMB 175 (E7W) 2:49 Effective 2026-04-13 through 2026-10-05
Daily 08:25 Seattle-Tacoma (SEA) 11:16 Ontario, Los Angeles (ONT) 2
Delta Air Lines DL 4070 Non-stop Embraer EMB 175 (E7W) 2:51 Effective from 2026-10-06
Daily 08:31 Seattle-Tacoma (SEA) 11:18 Ontario, Los Angeles (ONT) 2
Delta Air Lines DL 4070 Non-stop Embraer EMB 175 (E7W) 2:47 Effective 2026-03-08 through 2026-03-14
Daily 08:31 Seattle-Tacoma (SEA) 11:19 Ontario, Los Angeles (ONT) 2
Delta Air Lines DL 4070 Non-stop Embraer EMB 175 (E7W) 2:48 Effective 2026-03-15 through 2026-04-12
Wed,Thu 09:45 Seattle-Tacoma (SEA) 12:32 Ontario, Los Angeles (ONT) 2
Delta Air Lines DL 4070 Non-stop Embraer EMB 175 (E7W) 2:47 Valid until 2026-01-01
Ad flat here 8924483383 I FlightInfo Lower
Parallax here SEA-ONT




Feedback - Disclaimer - Privacy - new_base.html - DESKTOP - CACHE: False - LANG: en - IS_EU: False
FlightMapper.net Flight Search Countries Airlines
LANGUAGES
Delta Air Lines flights from Seattle-Tacoma (SEA) to Ontario, Los Angeles (ONT).
Ad mobi flat here (320x100px) 9629219771 M FlightInfo Top Flat
Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Delta Air Lines DL1056
19:55
Seattle-Tacoma (SEA)

22:40
Ontario, Los Angeles (ONT) 2
Effective 2026-04-13 through 2026-05-06
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:45, non-stop
Airbus A220-300 (223)
Direct Flights:
Delta Air Lines DL3834
14:30
Seattle-Tacoma (SEA)

17:08
Ontario, Los Angeles (ONT) 2
Valid until 2026-01-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:38, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
Delta Air Lines DL3840
10:00
Seattle-Tacoma (SEA)

12:49
Ontario, Los Angeles (ONT) 2
Effective 2026-05-07 through 2026-10-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:49, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
Delta Air Lines DL3840
10:00
Seattle-Tacoma (SEA)

12:54
Ontario, Los Angeles (ONT) 2
Effective from 2026-10-06
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:54, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
Delta Air Lines DL3884
19:55
Seattle-Tacoma (SEA)

22:40
Ontario, Los Angeles (ONT) 2
Effective 2026-05-07 through 2026-10-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:45, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
Delta Air Lines DL3987
19:55
Seattle-Tacoma (SEA)

22:43
Ontario, Los Angeles (ONT) 2
Effective from 2026-10-06
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:48, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
Delta Air Lines DL4027
19:50
Seattle-Tacoma (SEA)

22:33
Ontario, Los Angeles (ONT) 2
Effective 2026-03-08 through 2026-03-14
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:43, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
Delta Air Lines DL4027
19:50
Seattle-Tacoma (SEA)

22:34
Ontario, Los Angeles (ONT) 2
Effective 2026-03-15 through 2026-04-12
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:44, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
Delta Air Lines DL4027
19:55
Seattle-Tacoma (SEA)

22:37
Ontario, Los Angeles (ONT) 2
Effective 2026-02-12 through 2026-03-07
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:42, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
Delta Air Lines DL4027
20:00
Seattle-Tacoma (SEA)

22:44
Ontario, Los Angeles (ONT) 2
Effective 2026-02-01 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:44, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
Delta Air Lines DL4027
20:07
Seattle-Tacoma (SEA)

22:49
Ontario, Los Angeles (ONT) 2
Valid until 2026-01-04
Mon
Tue
Wed
-
Thu
-
Fri
Sat
Sun
Duration: 2:42, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
Delta Air Lines DL4027
20:07
Seattle-Tacoma (SEA)

22:51
Ontario, Los Angeles (ONT) 2
Effective 2026-01-05 through 2026-01-31
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:44, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
Delta Air Lines DL4031
11:15
Seattle-Tacoma (SEA)

13:56
Ontario, Los Angeles (ONT) 2
Effective 2026-01-05 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:41, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
Delta Air Lines DL4031
11:15
Seattle-Tacoma (SEA)

13:54
Ontario, Los Angeles (ONT) 2
Effective 2026-02-12 through 2026-03-07
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:39, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
Delta Air Lines DL4031
14:30
Seattle-Tacoma (SEA)

17:12
Ontario, Los Angeles (ONT) 2
Effective 2026-03-08 through 2026-03-14
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:42, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
Delta Air Lines DL4031
14:30
Seattle-Tacoma (SEA)

17:13
Ontario, Los Angeles (ONT) 2
Effective 2026-03-15 through 2026-04-12
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:43, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
Delta Air Lines DL4031
14:35
Seattle-Tacoma (SEA)

17:16
Ontario, Los Angeles (ONT) 2
Effective 2026-04-13 through 2026-10-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:41, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
Delta Air Lines DL4031
14:35
Seattle-Tacoma (SEA)

17:17
Ontario, Los Angeles (ONT) 2
Effective from 2026-10-06
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:42, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
Delta Air Lines DL4070
08:15
Seattle-Tacoma (SEA)

11:02
Ontario, Los Angeles (ONT) 2
Valid until 2026-01-04
Mon
Tue
Wed
-
Thu
-
Fri
Sat
Sun
Duration: 2:47, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
Delta Air Lines DL4070
08:25
Seattle-Tacoma (SEA)

11:14
Ontario, Los Angeles (ONT) 2
Effective 2026-04-13 through 2026-10-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:49, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
Delta Air Lines DL4070
08:25
Seattle-Tacoma (SEA)

11:16
Ontario, Los Angeles (ONT) 2
Effective from 2026-10-06
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:51, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
Delta Air Lines DL4070
08:31
Seattle-Tacoma (SEA)

11:18
Ontario, Los Angeles (ONT) 2
Effective 2026-03-08 through 2026-03-14
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:47, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
Delta Air Lines DL4070
08:31
Seattle-Tacoma (SEA)

11:19
Ontario, Los Angeles (ONT) 2
Effective 2026-03-15 through 2026-04-12
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:48, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
Delta Air Lines DL4070
09:45
Seattle-Tacoma (SEA)

12:32
Ontario, Los Angeles (ONT) 2
Valid until 2026-01-01
Mon
-
Tue
-
Wed
Thu
Fri
-
Sat
-
Sun
-
Duration: 2:47, non-stop
Embraer EMB 175 (E7W)
Ad mobi box here (300x250px) 6815354179 M FlightInfo Bottom Box
Parallax here SEA-ONT
  • A domestic route departing from the Seattle-Tacoma airport (SEA) and arriving at Ontario, Los Angeles airport (ONT).
  • The flight distance is 956 miles, or 1539 km.
  • The timezone of both the departure and the arrival airports is UTC-8 . Current time at both airports is (loading...).
  • For direct flights, the flight time varies between 2:38 and 2:54.
All SEA-ONT flights
All Delta Air Lines flights
Return (ONT-SEA) flights
Feedback     -     Disclaimer     -     Privacy - new_base.html - MOBILE

- CACHE: False - LANG: en - IS_EU: False