Delta Flight 3688 Deals & Information (2026/2027)

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Delta Flight 3688 Route Deals From $134

The cheapest prices found with in the last 7 days for return flights were $207 and $134 for one-way flights to Boise for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Dec 1 - Tue, Dec 8
SEA
Seattle - Tacoma Intl.
BOI
Boise
$207 Roundtrip, just found
$207
Roundtrip
just found
Select Delta flight, departing Tue, Dec 1 from Seattle - Tacoma Intl. to Boise, returning Tue, Dec 8, priced at $207 just found
Tue, Dec 1 - Tue, Dec 8
SEA
Seattle - Tacoma Intl.
BOI
Boise
$227 Roundtrip, just found
$227
Roundtrip
just found
Select Delta flight, departing Tue, Dec 1 from Seattle - Tacoma Intl. to Boise, returning Tue, Dec 8, priced at $227 just found
Wed, Dec 9 - Wed, Dec 16
SEA
Seattle - Tacoma Intl.
BOI
Boise
$255 Roundtrip, found 1 day ago
$255
Roundtrip
found 1 day ago
Select Delta flight, departing Wed, Dec 9 from Seattle - Tacoma Intl. to Boise, returning Wed, Dec 16, priced at $255 found 1 day ago
Tue, Dec 1 - Tue, Dec 8
SEA
Seattle - Tacoma Intl.
BOI
Boise
$257 Roundtrip, just found
$257
Roundtrip
just found
Select Delta flight, departing Tue, Dec 1 from Seattle - Tacoma Intl. to Boise, returning Tue, Dec 8, priced at $257 just found
Tue, Dec 1 - Tue, Dec 8
SEA
Seattle - Tacoma Intl.
BOI
Boise
$267 Roundtrip, just found
$267
Roundtrip
just found
Select Delta flight, departing Tue, Dec 1 from Seattle - Tacoma Intl. to Boise, returning Tue, Dec 8, priced at $267 just found
Wed, Dec 2 - Wed, Dec 9
SEA
Seattle - Tacoma Intl.
BOI
Boise
$271 Roundtrip, found 17 hours ago
$271
Roundtrip
found 17 hours ago
Select Delta flight, departing Wed, Dec 2 from Seattle - Tacoma Intl. to Boise, returning Wed, Dec 9, priced at $271 found 17 hours ago