Delta Air Lines
flight
DL 3688:
Multiple routes
FLIGHT SCHEDULE
Direct Flights:
Delta Air Lines DL3688
Valid until 2026-01-04
Mon
Tue
Wed
-
-
Thu
-
-
Fri
Sat
Sun
Duration: 1:27, non-stop
Embraer EMB 175 (E7W)
Embraer EMB 175 (E7W)
Direct Flights:
Delta Air Lines DL3688
Effective 2026-02-12 through 2026-03-07
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:27, non-stop
Embraer EMB 175 (E7W)
Embraer EMB 175 (E7W)
Direct Flights:
Delta Air Lines DL3688
Effective 2026-01-05 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:29, non-stop
Embraer EMB 175 (E7W)
Embraer EMB 175 (E7W)
Direct Flights:
Delta Air Lines DL3688
Effective 2026-03-08 through 2026-03-14
Mon
Tue
-
-
Wed
-
-
Thu
Fri
Sat
Sun
Duration: 1:30, non-stop
Embraer EMB 175 (E7W)
Embraer EMB 175 (E7W)
Direct Flights:
Delta Air Lines DL3688
Effective 2026-03-15 through 2026-04-12
Mon
Tue
-
-
Wed
-
-
Thu
Fri
Sat
Sun
Duration: 1:31, non-stop
Embraer EMB 175 (E7W)
Embraer EMB 175 (E7W)
Direct Flights:
Delta Air Lines DL3688
Effective 2026-04-13 through 2026-10-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:36, non-stop
Embraer EMB 175 (E7W)
Embraer EMB 175 (E7W)
Direct Flights:
Delta Air Lines DL3688
Effective from 2026-10-06
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:34, non-stop
Embraer EMB 175 (E7W)
Embraer EMB 175 (E7W)
Direct Flights:
Delta Air Lines DL3688
Valid until 2026-01-01
Mon
-
-
Tue
-
-
Wed
Thu
Fri
-
-
Sat
-
-
Sun
-
-
Duration: 1:27, non-stop
Embraer EMB 175 (E7W)
Embraer EMB 175 (E7W)
Direct Flights:
Delta Air Lines DL3688
Valid until 2026-01-04
Mon
Tue
Wed
-
-
Thu
-
-
Fri
Sat
Sun
Duration: 1:51, non-stop
Embraer EMB 175 (E7W)
Embraer EMB 175 (E7W)
Direct Flights:
Delta Air Lines DL3688
Effective 2026-01-19 through 2026-02-06
Mon
Tue
-
-
Wed
-
-
Thu
Fri
Sat
-
-
Sun
Duration: 1:58, non-stop
Embraer EMB 175 (E7W)
Embraer EMB 175 (E7W)
Direct Flights:
Delta Air Lines DL3688
Operates only on 2026-02-09
Mon
Tue
-
-
Wed
-
-
Thu
-
-
Fri
-
-
Sat
-
-
Sun
-
-
Duration: 1:58, non-stop
Embraer EMB 175 (E7W)
Embraer EMB 175 (E7W)
Direct Flights:
Delta Air Lines DL3688
Effective 2026-02-12 through 2026-02-20
Mon
Tue
-
-
Wed
-
-
Thu
Fri
Sat
-
-
Sun
-
-
Duration: 1:56, non-stop
Embraer EMB 175 (E7W)
Embraer EMB 175 (E7W)
Direct Flights:
Delta Air Lines DL3688
Effective 2026-02-22 through 2026-03-06
Mon
Tue
-
-
Wed
-
-
Thu
Fri
Sat
-
-
Sun
Duration: 1:56, non-stop
Embraer EMB 175 (E7W)
Embraer EMB 175 (E7W)
Direct Flights:
Delta Air Lines DL3688
Effective 2026-03-08 through 2026-03-13
Mon
Tue
-
-
Wed
-
-
Thu
Fri
Sat
-
-
Sun
Duration: 1:46, non-stop
Embraer EMB 175 (E7W)
Embraer EMB 175 (E7W)
Direct Flights:
Delta Air Lines DL3688
Effective 2026-03-15 through 2026-04-12
Mon
Tue
-
-
Wed
-
-
Thu
Fri
Sat
-
-
Sun
Duration: 1:48, non-stop
Embraer EMB 175 (E7W)
Embraer EMB 175 (E7W)
Direct Flights:
Delta Air Lines DL3688
Effective 2026-04-13 through 2026-05-22
Mon
Tue
Wed
Thu
Fri
Sat
-
-
Sun
Duration: 1:44, non-stop
Embraer EMB 175 (E7W)
Embraer EMB 175 (E7W)
Direct Flights:
Delta Air Lines DL3688
Effective 2026-05-25 through 2026-09-04
Mon
Tue
Wed
Thu
Fri
Sat
-
-
Sun
Duration: 1:44, non-stop
Embraer EMB 175 (E7W)
Embraer EMB 175 (E7W)
Direct Flights:
Delta Air Lines DL3688
Effective 2026-09-07 through 2026-10-05
Mon
Tue
Wed
Thu
Fri
Sat
-
-
Sun
Duration: 1:44, non-stop
Embraer EMB 175 (E7W)
Embraer EMB 175 (E7W)
Direct Flights:
Delta Air Lines DL3688
Effective from 2026-10-06
Mon
Tue
Wed
Thu
Fri
Sat
-
-
Sun
Duration: 1:55, non-stop
Embraer EMB 175 (E7W)
Embraer EMB 175 (E7W)
This flight number is listed as serving the following routes:
- Boise (BOI) - Seattle-Tacoma (SEA)