Alaska Airlines Flight 91 Deals & Information (2026/2027)

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Alaska Airlines Flight 91 Route Deals From $59

The cheapest prices found with in the last 7 days for return flights were $99 and $59 for one-way flights to San Francisco Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Sep 23 - Wed, Sep 30
LAX
Los Angeles Intl.
SFO
San Francisco Intl.
$99 Roundtrip, found 1 hour ago
$99
Roundtrip
found 1 hour ago
Select Alaska Airlines flight, departing Wed, Sep 23 from Los Angeles Intl. to San Francisco Intl., returning Wed, Sep 30, priced at $99 found 1 hour ago
Mon, Oct 19 - Fri, Dec 4
LAX
Los Angeles Intl.
SFO
San Francisco Intl.
$110 Roundtrip, found 1 day ago
$110
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Mon, Oct 19 from Los Angeles Intl. to San Francisco Intl., returning Fri, Dec 4, priced at $110 found 1 day ago
Tue, Nov 10 - Fri, Nov 13
LAX
Los Angeles Intl.
SFO
San Francisco Intl.
$119 Roundtrip, just found
$119
Roundtrip
just found
Select Alaska Airlines flight, departing Tue, Nov 10 from Los Angeles Intl. to San Francisco Intl., returning Fri, Nov 13, priced at $119 just found
Sat, Oct 10 - Mon, Oct 12
LAX
Los Angeles Intl.
SFO
San Francisco Intl.
$125 Roundtrip, just found
$125
Roundtrip
just found
Select Alaska Airlines flight, departing Sat, Oct 10 from Los Angeles Intl. to San Francisco Intl., returning Mon, Oct 12, priced at $125 just found
Fri, Oct 30 - Thu, Nov 5
LAX
Los Angeles Intl.
SFO
San Francisco Intl.
$134 Roundtrip, just found
$134
Roundtrip
just found
Select Alaska Airlines flight, departing Fri, Oct 30 from Los Angeles Intl. to San Francisco Intl., returning Thu, Nov 5, priced at $134 just found
Fri, Oct 2 - Mon, Oct 5
LAX
Los Angeles Intl.
SFO
San Francisco Intl.
$136 Roundtrip, just found
$136
Roundtrip
just found
Select Alaska Airlines flight, departing Fri, Oct 2 from Los Angeles Intl. to San Francisco Intl., returning Mon, Oct 5, priced at $136 just found
Sat, Oct 10 - Mon, Oct 12
LAX
Los Angeles Intl.
SFO
San Francisco Intl.
$146 Roundtrip, just found
$146
Roundtrip
just found
Select Alaska Airlines flight, departing Sat, Oct 10 from Los Angeles Intl. to San Francisco Intl., returning Mon, Oct 12, priced at $146 just found
Wed, Nov 11 - Mon, Nov 16
LAX
Los Angeles Intl.
SFO
San Francisco Intl.
$147 Roundtrip, just found
$147
Roundtrip
just found
Select Alaska Airlines flight, departing Wed, Nov 11 from Los Angeles Intl. to San Francisco Intl., returning Mon, Nov 16, priced at $147 just found

Frequently asked questions

What route does flight number AS91 take?
You'll be touching down at Sea-Tac Airport from GEG if you've booked a ticket on flight number AS91. You'll be in the sky for 1 hour and 10 minutes on this trip. It's also good to note that the flight conveniently travels non-stop.
What kind of plane is on flight number AS91?
The route for AS91 is almost always Spokane, WA Airport (GEG-Spokane Intl.) to SEA, and the Boeing 737-800 is the type of aircraft you're likely to be jetting off with.
If I am not able to travel due to COVID-19, can I change my flight to a later date?
For more info about changing your AS91 flight with Travelocity, please visit our Customer Service Portal.