When is the best time to book a flight from Seattle to San Jose, CR?

Want to find the lowest fares by day and time flying from Seattle to San Jose, CR on Alaska Airlines or Hawaiian Airlines? Check out our flight search widget.

Can I earn points on my flight to San Jose, CR?

Yes, with Atmos™ Rewards you can earn points on flights to 1000+ destinations worldwide through the growing network of Alaska and Hawaiian Airlines. Not an Atmos™ Rewards member yet? Learn more and join today.

Can I rent a car when I arrive at Juan Santamaría International Airport?

Yes, you can rent a car at Juan Santamaría International Airport. Check availability and book now

Where can I find the status of my flight to San Jose, CR?

You can check the status of your upcoming Alaska Airlines flight on our flight schedule page.

Where can I find answers to questions about flying with Alaska Airlines?

Visit the Alaska Airlines Help Center to quickly browse our help pages by category to find the information you need.

Can I change or cancel my Alaska Airlines flight to San Jose, CR?

Yes, you can review, modify, or cancel a reservation from our Manage Your Reservation tool. You can learn more about our policy for changing or cancelling a reservation here.

Flights from Seattle (SEA) to San Jose, CR (SJO) on Alaska Airlines

1 Passenger

From

Departure

Return

Lowest fares from Seattle to San Jose, CR

From

Nov 2026

$314*

Seen: 17 hours ago

Flight Type One Way|Saver

Dec 2026

$294*

Seen: 17 hours ago

Flight Type One Way|Saver

Jan 2027

$314*

Seen: 17 hours ago

Flight Type One Way|Saver

NOV

DEC

One-way low-fare flights Seattle to San Jose, CR.*

From

Budget

Cabin Class

There are no fares that match your filter criteria. Please adjust your filters.

*Displayed prices have been available within the past 24 hours and may not be available at the time of booking. Fares listed may be Saver fares, which is our most restrictive fare option and subject to additional restrictions. For roundtrip journeys, the price displayed—available within the past 24 hours—is the aggregate of the lowest available fare each way. Additional baggage charges and fees for optional products and services may apply. Other terms and conditions may apply.

Frequently Asked Questions on flights from Seattle (SEA) to San Jose, CR (SJO)

When is the best time to book a flight from Seattle to San Jose, CR?: Want to find the lowest fares by day and time flying from Seattle to San Jose, CR on Alaska Airlines or Hawaiian Airlines? Check out our flight search widget.
Can I earn points on my flight to San Jose, CR?: Yes, with Atmos™ Rewards you can earn points on flights to 1000+ destinations worldwide through the growing network of Alaska and Hawaiian Airlines. Not an Atmos™ Rewards member yet? Learn more and join today.
Can I rent a car when I arrive at Juan Santamaría International Airport?: Yes, you can rent a car at Juan Santamaría International Airport. Check availability and book now
Where can I find the status of my flight to San Jose, CR?: You can check the status of your upcoming Alaska Airlines flight on our flight schedule page.
Where can I find answers to questions about flying with Alaska Airlines?: Visit the Alaska Airlines Help Center to quickly browse our help pages by category to find the information you need.
Can I change or cancel my Alaska Airlines flight to San Jose, CR?: Yes, you can review, modify, or cancel a reservation from our Manage Your Reservation tool. You can learn more about our policy for changing or cancelling a reservation here.

Flights from Seattle (SEA) to San Jose, CR (SJO) on Alaska Airlines

Lowest fares from Seattle to San Jose, CR

One-way low-fare flights Seattle to San Jose, CR.*

Frequently Asked Questions on flights from Seattle (SEA) to San Jose, CR (SJO)

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