Delta Flight 3688 Deals & Information (2025/2026)

Wander Wisely with exceptional service, 24/7 supportOpens in a new window

Feel at ease with free flight cancellations within 24 hours of booking

Change your flight without a fee on select flights

Delta Flight 3688 Route Deals From $62

The cheapest prices found with in the last 7 days for return flights were $115 and $62 for one-way flights to Boise for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Jan 17 - Mon, Jan 19
SEA
Seattle - Tacoma Intl.
BOI
Boise
$115 Roundtrip, found 2 days ago
$115
Roundtrip
found 2 days ago
Select Delta flight, departing Sat, Jan 17 from Seattle - Tacoma Intl. to Boise, returning Mon, Jan 19, priced at $115 found 2 days ago
Sat, Oct 18 - Sat, Oct 25
SEA
Seattle - Tacoma Intl.
BOI
Boise
$119 Roundtrip, found 12 hours ago
$119
Roundtrip
found 12 hours ago
Select Delta flight, departing Sat, Oct 18 from Seattle - Tacoma Intl. to Boise, returning Sat, Oct 25, priced at $119 found 12 hours ago
Sat, Jan 17 - Mon, Jan 19
SEA
Seattle - Tacoma Intl.
BOI
Boise
$136 Roundtrip, found 2 days ago
$136
Roundtrip
found 2 days ago
Select Delta flight, departing Sat, Jan 17 from Seattle - Tacoma Intl. to Boise, returning Mon, Jan 19, priced at $136 found 2 days ago
Fri, Nov 7 - Sun, Nov 9
SEA
Seattle - Tacoma Intl.
BOI
Boise
$139 Roundtrip, found 4 days ago
$139
Roundtrip
found 4 days ago
Select Delta flight, departing Fri, Nov 7 from Seattle - Tacoma Intl. to Boise, returning Sun, Nov 9, priced at $139 found 4 days ago
Fri, Jan 2 - Sun, Jan 4
SEA
Seattle - Tacoma Intl.
BOI
Boise
$140 Roundtrip, found 3 days ago
$140
Roundtrip
found 3 days ago
Select Delta flight, departing Fri, Jan 2 from Seattle - Tacoma Intl. to Boise, returning Sun, Jan 4, priced at $140 found 3 days ago
Fri, Jan 16 - Tue, Jan 20
SEA
Seattle - Tacoma Intl.
BOI
Boise
$147 Roundtrip, found 4 days ago
$147
Roundtrip
found 4 days ago
Select Delta flight, departing Fri, Jan 16 from Seattle - Tacoma Intl. to Boise, returning Tue, Jan 20, priced at $147 found 4 days ago