Alaska Airlines Flight 620 Deals & Information (2025/2026)

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Alaska Airlines Flight 620 Route Deals From $79

The cheapest prices found with in the last 7 days for return flights were $138 and $79 for one-way flights to Denver Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Sep 30 - Wed, Oct 1
SEA
Seattle - Tacoma Intl.
DEN
Denver Intl.
$138 Roundtrip, found 2 days ago
$138
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Tue, Sep 30 from Seattle - Tacoma Intl. to Denver Intl., returning Wed, Oct 1, priced at $138 found 2 days ago
Sat, Nov 8 - Sat, Nov 15
SEA
Seattle - Tacoma Intl.
DEN
Denver Intl.
$143 Roundtrip, found 10 hours ago
$143
Roundtrip
found 10 hours ago
Select Alaska Airlines flight, departing Sat, Nov 8 from Seattle - Tacoma Intl. to Denver Intl., returning Sat, Nov 15, priced at $143 found 10 hours ago
Wed, Oct 15 - Wed, Oct 22
SEA
Seattle - Tacoma Intl.
DEN
Denver Intl.
$145 Roundtrip, found 11 hours ago
$145
Roundtrip
found 11 hours ago
Select Alaska Airlines flight, departing Wed, Oct 15 from Seattle - Tacoma Intl. to Denver Intl., returning Wed, Oct 22, priced at $145 found 11 hours ago
Tue, Sep 30 - Wed, Oct 1
SEA
Seattle - Tacoma Intl.
DEN
Denver Intl.
$148 Roundtrip, found 2 days ago
$148
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Tue, Sep 30 from Seattle - Tacoma Intl. to Denver Intl., returning Wed, Oct 1, priced at $148 found 2 days ago
Sat, Nov 8 - Sat, Nov 15
SEA
Seattle - Tacoma Intl.
DEN
Denver Intl.
$152 Roundtrip, found 10 hours ago
$152
Roundtrip
found 10 hours ago
Select Alaska Airlines flight, departing Sat, Nov 8 from Seattle - Tacoma Intl. to Denver Intl., returning Sat, Nov 15, priced at $152 found 10 hours ago
Tue, Sep 30 - Sat, Oct 4
SEA
Seattle - Tacoma Intl.
DEN
Denver Intl.
$155 Roundtrip, found 3 hours ago
$155
Roundtrip
found 3 hours ago
Select Alaska Airlines flight, departing Tue, Sep 30 from Seattle - Tacoma Intl. to Denver Intl., returning Sat, Oct 4, priced at $155 found 3 hours ago
Fri, Oct 3 - Tue, Oct 7
SEA
Seattle - Tacoma Intl.
DEN
Denver Intl.
$161 Roundtrip, found 1 hour ago
$161
Roundtrip
found 1 hour ago
Select Alaska Airlines flight, departing Fri, Oct 3 from Seattle - Tacoma Intl. to Denver Intl., returning Tue, Oct 7, priced at $161 found 1 hour ago