Delta Air Lines flight DL 3840: Multiple routes

Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Daily 10:00 Seattle-Tacoma (SEA) 12:49 Ontario, Los Angeles (ONT) 2
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
DL 3840 Non-stop Embraer EMB 175 (E7W) 2:54 Effective from 2026-10-06
Mon,Tue,Fri-Sun 15:25 Seattle-Tacoma (SEA) 17:40 San Jose (SJC) A
DL 3840 Non-stop Embraer EMB 175 (E7W) 2:15 Valid until 2026-01-04
Tue,Wed 16:30 Madison (MSN) 18:55 Detroit (DTW) M
DL 3840 Non-stop Canadair CRJ 900 (CR9) 1:25 Effective 2026-01-20 through 2026-02-11
Wed,Thu 17:35 Seattle-Tacoma (SEA) 19:56 San Jose (SJC) A
DL 3840 Non-stop Embraer EMB 175 (E7W) 2:21 Valid until 2026-01-01
Daily 17:55 Omaha (OMA) 19:37 Salt Lake City (SLC)
DL 3840 Non-stop Embraer EMB 175 (E7W) 2:42 Effective 2026-03-08 through 2026-04-12
Mon,Tue,Fri-Sun 18:20 San Jose (SJC) A 20:49 Seattle-Tacoma (SEA)
DL 3840 Non-stop Embraer EMB 175 (E7W) 2:29 Valid until 2026-01-04
Mon,Thu-Sun 18:20 Madison (MSN) 20:45 Detroit (DTW) M
DL 3840 Non-stop Canadair CRJ 900 (CR9) 1:25 Effective 2026-01-19 through 2026-02-09
Fri 21:35 Detroit (DTW) M 23:19 Richmond (RIC)
DL 3840 Non-stop Canadair CRJ 900 (CR9) 1:44 Operates only on 2026-02-13
Mon-Fri,Sun 21:35 Detroit (DTW) M 23:19 Richmond (RIC)
DL 3840 Non-stop Canadair CRJ 900 (CR9) 1:44 Effective 2026-02-24 through 2026-03-06
This flight number is listed as serving the following routes:


Feedback - Disclaimer - Privacy
FlightMapper.net Flight Search Countries Airlines
LANGUAGES
Delta Air Lines flight DL 3840: Multiple routes
Select flight date:
FLIGHT SCHEDULE
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 DL3840
15:25
Seattle-Tacoma (SEA)

17:40
San Jose (SJC) A
Valid until 2026-01-04
Mon
Tue
Wed
-
Thu
-
Fri
Sat
Sun
Duration: 2:15, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
Delta Air Lines DL3840
16:30
Madison (MSN)

18:55
Detroit (DTW) M
Effective 2026-01-20 through 2026-02-11
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:25, non-stop
Canadair CRJ 900 (CR9)
Direct Flights:
Delta Air Lines DL3840
17:35
Seattle-Tacoma (SEA)

19:56
San Jose (SJC) A
Valid until 2026-01-01
Mon
-
Tue
-
Wed
Thu
Fri
-
Sat
-
Sun
-
Duration: 2:21, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
Delta Air Lines DL3840
17:55
Omaha (OMA)

19:37
Salt Lake City (SLC)
Effective 2026-03-08 through 2026-04-12
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:42, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
Delta Air Lines DL3840
18:20
San Jose (SJC) A

20:49
Seattle-Tacoma (SEA)
Valid until 2026-01-04
Mon
Tue
Wed
-
Thu
-
Fri
Sat
Sun
Duration: 2:29, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
Delta Air Lines DL3840
18:20
Madison (MSN)

20:45
Detroit (DTW) M
Effective 2026-01-19 through 2026-02-09
Mon
Tue
-
Wed
-
Thu
Fri
Sat
Sun
Duration: 1:25, non-stop
Canadair CRJ 900 (CR9)
Direct Flights:
Delta Air Lines DL3840
21:35
Detroit (DTW) M

23:19
Richmond (RIC)
Operates only on 2026-02-13
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 1:44, non-stop
Canadair CRJ 900 (CR9)
Direct Flights:
Delta Air Lines DL3840
21:35
Detroit (DTW) M

23:19
Richmond (RIC)
Effective 2026-02-24 through 2026-03-06
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 1:44, non-stop
Canadair CRJ 900 (CR9)
This flight number is listed as serving the following routes:
  • Detroit (DTW) - Richmond (RIC)
  • Madison (MSN) - Detroit (DTW)
  • Omaha (OMA) - Salt Lake City (SLC)
  • Seattle-Tacoma (SEA) - Ontario, Los Angeles (ONT)
  • Seattle-Tacoma (SEA) - San Jose (SJC)
All Delta Air Lines flights
Feedback     -     Disclaimer     -     Privacy