Delta Air Lines flight DL 4042: Multiple routes

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FLIGHT SCHEDULE
Direct Flights:
Daily 06:00 Ontario, Los Angeles (ONT) 2 08:55 Seattle-Tacoma (SEA)
DL 4042 Non-stop Embraer EMB 175 (E7W) 2:55 Effective 2026-03-08 through 2026-04-12
Daily 06:38 Ontario, Los Angeles (ONT) 2 09:45 Seattle-Tacoma (SEA)
DL 4042 Non-stop Embraer EMB 175 (E7W) 3:07 Valid until 2026-01-04
Daily 07:30 Ontario, Los Angeles (ONT) 2 10:36 Seattle-Tacoma (SEA)
DL 4042 Non-stop Embraer EMB 175 (E7W) 3:06 Effective 2026-01-05 through 2026-02-11
Daily 07:30 Ontario, Los Angeles (ONT) 2 10:34 Seattle-Tacoma (SEA)
DL 4042 Non-stop Embraer EMB 175 (E7W) 3:04 Effective 2026-02-12 through 2026-03-07
Daily 11:00 Salt Lake City (SLC) 11:55 Palm Springs (PSP)
DL 4042 Non-stop Embraer EMB 175 (E7W) 1:55 Effective 2026-04-13 through 2026-10-05
Daily 11:00 Salt Lake City (SLC) 11:56 Palm Springs (PSP)
DL 4042 Non-stop Embraer EMB 175 (E7W) 1:56 Effective from 2026-10-06
Daily 12:37 Palm Springs (PSP) 15:24 Salt Lake City (SLC)
DL 4042 Non-stop Embraer EMB 175 (E7W) 1:47 Effective 2026-04-13 through 2026-10-05
Daily 12:37 Palm Springs (PSP) 15:26 Salt Lake City (SLC)
DL 4042 Non-stop Embraer EMB 175 (E7W) 1:49 Effective from 2026-10-06
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This flight number is listed as serving the following routes:


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Delta Air Lines flight DL 4042: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Delta Air Lines DL4042
06:00
Ontario, Los Angeles (ONT) 2

08:55
Seattle-Tacoma (SEA)
Effective 2026-03-08 through 2026-04-12
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:55, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
Delta Air Lines DL4042
06:38
Ontario, Los Angeles (ONT) 2

09:45
Seattle-Tacoma (SEA)
Valid until 2026-01-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 3:07, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
Delta Air Lines DL4042
07:30
Ontario, Los Angeles (ONT) 2

10:36
Seattle-Tacoma (SEA)
Effective 2026-01-05 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 3:06, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
Delta Air Lines DL4042
07:30
Ontario, Los Angeles (ONT) 2

10:34
Seattle-Tacoma (SEA)
Effective 2026-02-12 through 2026-03-07
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 3:04, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
Delta Air Lines DL4042
11:00
Salt Lake City (SLC)

11:55
Palm Springs (PSP)
Effective 2026-04-13 through 2026-10-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:55, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
Delta Air Lines DL4042
11:00
Salt Lake City (SLC)

11:56
Palm Springs (PSP)
Effective from 2026-10-06
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:56, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
Delta Air Lines DL4042
12:37
Palm Springs (PSP)

15:24
Salt Lake City (SLC)
Effective 2026-04-13 through 2026-10-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:47, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
Delta Air Lines DL4042
12:37
Palm Springs (PSP)

15:26
Salt Lake City (SLC)
Effective from 2026-10-06
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:49, non-stop
Embraer EMB 175 (E7W)
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This flight number is listed as serving the following routes:
  • Ontario, Los Angeles (ONT) - Seattle-Tacoma (SEA)
  • Salt Lake City (SLC) - Palm Springs (PSP)
All Delta Air Lines flights
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