Alaska Airlines Flight 684 Deals & Information (2025/2026)

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Alaska Airlines Flight 684 Route Deals From $69

The cheapest prices found with in the last 7 days for return flights were $97 and $69 for one-way flights to Denver Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Feb 25 - Mon, Mar 9
PDX
Portland Intl.
DEN
Denver Intl.
$97 Roundtrip, found 6 days ago
$97
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Wed, Feb 25 from Portland Intl. to Denver Intl., returning Mon, Mar 9, priced at $97 found 6 days ago
Wed, Mar 4 - Sun, Mar 8
PDX
Portland Intl.
DEN
Denver Intl.
$107 Roundtrip, found 17 hours ago
$107
Roundtrip
found 17 hours ago
Select Alaska Airlines flight, departing Wed, Mar 4 from Portland Intl. to Denver Intl., returning Sun, Mar 8, priced at $107 found 17 hours ago
Mon, Apr 6 - Mon, Apr 13
PDX
Portland Intl.
DEN
Denver Intl.
$128 Roundtrip, found 1 day ago
$128
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Mon, Apr 6 from Portland Intl. to Denver Intl., returning Mon, Apr 13, priced at $128 found 1 day ago
Wed, Mar 4 - Sun, Mar 8
PDX
Portland Intl.
DEN
Denver Intl.
$136 Roundtrip, found 17 hours ago
$136
Roundtrip
found 17 hours ago
Select Alaska Airlines flight, departing Wed, Mar 4 from Portland Intl. to Denver Intl., returning Sun, Mar 8, priced at $136 found 17 hours ago
Tue, Feb 10 - Tue, Feb 17
PDX
Portland Intl.
DEN
Denver Intl.
$137 Roundtrip, found 23 hours ago
$137
Roundtrip
found 23 hours ago
Select Alaska Airlines flight, departing Tue, Feb 10 from Portland Intl. to Denver Intl., returning Tue, Feb 17, priced at $137 found 23 hours ago