Delta Air Lines flight DL 4042: Ontario, Los Angeles - Seattle-Tacoma

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FLIGHT SCHEDULE
Direct Flights:
Daily 05:45 Ontario, Los Angeles (ONT) 2 08:42 Seattle-Tacoma (SEA)
DL 4042 Non-stop Embraer EMB 175 (E7W) 2:57 Valid until 2025-05-06
Daily 06:00 Ontario, Los Angeles (ONT) 2 08:55 Seattle-Tacoma (SEA)
DL 4042 Non-stop Embraer EMB 175 (E7W) 2:55 Effective 2025-05-07 through 2025-06-07
Daily 06:30 Ontario, Los Angeles (ONT) 2 09:28 Seattle-Tacoma (SEA)
DL 4042 Non-stop Embraer EMB 175 (E7W) 2:58 Effective 2025-06-08 through 2025-07-06
Daily 07:00 Ontario, Los Angeles (ONT) 2 09:49 Seattle-Tacoma (SEA)
DL 4042 Non-stop Embraer EMB 175 (E7W) 2:49 Effective 2025-07-07 through 2025-09-07
Daily 07:00 Ontario, Los Angeles (ONT) 2 10:02 Seattle-Tacoma (SEA)
DL 4042 Non-stop Embraer EMB 175 (E7W) 3:02 Effective 2025-09-08 through 2026-01-05
Daily 07:00 Ontario, Los Angeles (ONT) 2 10:04 Seattle-Tacoma (SEA)
DL 4042 Non-stop Embraer EMB 175 (E7W) 3:04 Effective from 2026-01-06
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Delta Air Lines flight DL 4042:
Ontario, Los Angeles - Seattle-Tacoma
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Delta Air Lines DL4042
05:45
Ontario, Los Angeles (ONT) 2

08:42
Seattle-Tacoma (SEA)
Valid until 2025-05-06
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:57, non-stop
Embraer EMB 175 (E7W)
Delta Air Lines DL4042
06:00
Ontario, Los Angeles (ONT) 2

08:55
Seattle-Tacoma (SEA)
Effective 2025-05-07 through 2025-06-07
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:55, non-stop
Embraer EMB 175 (E7W)
Delta Air Lines DL4042
06:30
Ontario, Los Angeles (ONT) 2

09:28
Seattle-Tacoma (SEA)
Effective 2025-06-08 through 2025-07-06
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:58, non-stop
Embraer EMB 175 (E7W)
Delta Air Lines DL4042
07:00
Ontario, Los Angeles (ONT) 2

09:49
Seattle-Tacoma (SEA)
Effective 2025-07-07 through 2025-09-07
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:49, non-stop
Embraer EMB 175 (E7W)
Delta Air Lines DL4042
07:00
Ontario, Los Angeles (ONT) 2

10:02
Seattle-Tacoma (SEA)
Effective 2025-09-08 through 2026-01-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 3:02, non-stop
Embraer EMB 175 (E7W)
Delta Air Lines DL4042
07:00
Ontario, Los Angeles (ONT) 2

10:04
Seattle-Tacoma (SEA)
Effective from 2026-01-06
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 3:04, non-stop
Embraer EMB 175 (E7W)
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  • DL 4042 is a domestic flight departing from the Ontario, Los Angeles airport (ONT) and arriving at Seattle-Tacoma airport (SEA).
  • 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 2:49 and 3:04.
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