SEA - SJC

Find cheap flight tickets from Seattle to San Jose

1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to San Jose

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to San Jose, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to San Jose, as well as popular online travel agencies
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Everything you should know

Advice from real travellers
AI-powered summary based on content written by KAYAK users. AI can make mistakes.
Southwest free carry-on adds value; Delta offers free Wi-Fi for SkyMiles members.
Alaska's 20-minute bag guarantee helps on busy SEA departures; SJC suits Silicon Valley.
User tips
User tips
User tips
User tips
Direct flights
Every day
You can fly direct with Alaska Airlines, Delta, and Southwest. Average duration is 2h 15m
Direct flights
Direct flights
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+1
Direct flights
Direct flights
+1
When to book
in advance
Our data shows that travellers who book at least 4 weeks in advance save around 60% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 22% price drop
Most popular
Good to know
Good to know
+1
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Good to know
Good to know
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KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to San Jose!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Seattle to San Jose (SEA-SJC)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Seattle to San Jose that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Seattle to San Jose

Multiple Airlines Logo
SEA
-
SJC
1805 kmmulti-stop
Multiple Airlines Logo
SJC
-
SEA
1805 kmmulti-stop
Multiple Airlines
Booking Insights

KAYAK's insights & trends for Seattle to San Jose flights

Get data-powered insights and trends into flights from Seattle to San Jose to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Seattle to San Jose?

The average price of all round-trip flights from Seattle to San Jose clicked on KAYAK for each day over the last 12 months.

When flying from Seattle to San Jose, you should consider leaving on a Saturday and avoid Tuesdays if you are looking for the best rates. For your return to Seattle, you’ll find the best rates on Saturdays and the most expensive ones on Wednesdays.

What is the cheapest month to fly from Seattle to San Jose?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Seattle to San Jose, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Seattle to San Jose is October, where tickets cost ₹ 19,734 (return) on average. On the other hand, the most expensive months are February and April, where the average cost of round-trip tickets is ₹ 32,222 and ₹ 28,695 respectively.

How far in advance should I book a flight from Seattle to San Jose?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Seattle to San Jose, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Seattle to San Jose, you should book around 4 weeks before departure, which saves you about 60% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 14 weeks before departure.

Good to know

Low seasonJanuary
Best time to beat the crowds (4% less expensive on average)

When to book flights from Seattle to San Jose

Are your dates flexible? Find out the best times to travel from Seattle to San Jose based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

Flights from Seattle to San Jose: the best tips from KAYAK users' own experiences

Insights shared by verified travellers who flew the route from Seattle to San Jose 
GeraldFlew with Delta
SEA
-
SJC
Mar 2026
Flights earlier in the day are better - less chance of stacking delays. Much better than SFO flights, They're terrible in August (fog).
Verified travelerFlew with Alaska Airlines
SEA
-
SJC
Aug 2024
The airport is busy and a mess with construction. There is a train to take so account for extra time.

FAQs for booking flights from Seattle to San Jose

  • Which airlines offer Wi-Fi service onboard planes from Seattle to San Jose?

    Alaska Airlines, Delta, American Airlines, JetBlue, and Hawaiian Airlines offer inflight Wi-Fi service on the Seattle to San Jose flight route.

  • Which aircraft models fly most regularly from Seattle to San Jose?

    The Boeing 737-800 Passenger/BBJ2 (winglets) is the aircraft model that flies most regularly on the Seattle to San Jose flight route.

  • Which airline alliances offer flights from Seattle to San Jose?

    oneworld is the only airline alliance operating flights between Seattle and San Jose.

  • On which days can I fly direct from Seattle to San Jose?

    There are direct flights from Seattle to San Jose on a daily basis.

  • How does KAYAK find such low prices on flights from Seattle to San Jose?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Seattle to San Jose.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Seattle to San Jose?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Jose from Seattle is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Seattle to San Jose?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to San Jose with an airline and back to Seattle with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seattle to San Jose?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Jose from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Seattle to San Jose

  • Looking for a cheap flight? 25% of our users found flights on this route for ₹ 12,717 or less one-way.

Prefer to fly direct from Seattle/Tacoma Intl to San Jose?

 
Nonstop data is based off flight results for the next 60 days. Find direct flights from all airlines flying nonstop from Seattle/Tacoma Intl to San Jose.
Find which airlines fly direct from Seattle/Tacoma Intl Airport to San Jose Airport, which days they fly and book direct flights.

Direct departures

Seattle/Tacoma Intl to San Jose

Monday

Alaska Airlines,Delta,Southwest

Alaska Airlines,Delta, +1 more

Tuesday

Alaska Airlines,Delta,Southwest

Alaska Airlines,Delta, +1 more

Wednesday

Alaska Airlines,Delta,Southwest

Alaska Airlines,Delta, +1 more

Thursday

Alaska Airlines,Delta,Southwest

Alaska Airlines,Delta, +1 more

Friday

Alaska Airlines,Delta,Southwest

Alaska Airlines,Delta, +1 more

Saturday

Alaska Airlines,Delta,Southwest

Alaska Airlines,Delta, +1 more

Sunday

Alaska Airlines,Delta,Southwest

Alaska Airlines,Delta, +1 more

See more direct flights

Direct returns

San Jose to Seattle/Tacoma Intl

Monday

Alaska Airlines,Delta,Southwest

Alaska Airlines,Delta, +1 more

Tuesday

Alaska Airlines,Delta,Southwest

Alaska Airlines,Delta, +1 more

Wednesday

Alaska Airlines,Delta,Southwest

Alaska Airlines,Delta, +1 more

Thursday

Alaska Airlines,Delta,Southwest

Alaska Airlines,Delta, +1 more

Friday

Alaska Airlines,Delta,Southwest

Alaska Airlines,Delta, +1 more

Saturday

Alaska Airlines,Delta,Southwest

Alaska Airlines,Delta, +1 more

Sunday

Alaska Airlines,Delta,Southwest

Alaska Airlines,Delta, +1 more

See more direct flights

Reviews of the top airline flying from Seattle to San Jose

 
See real verified KAYAK customer reviews for airlines flying from Seattle to San Jose. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Seattle to San Jose? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
Alaska AirlinesOverall score based on 12469 reviews
8.1Boarding
8.5Crew
7.1Food
7.8Comfort
7.0Entertainment
Airline reviews

Check in & bag drop was straightforward. Alaskair changed the gate approx 40 min before departure, and I only became aware due to Google wallet update to my boarding pass. Had to move from gate N1 to C9 which required use of the Train, luckily I had time available.

6.0 GoodAnonymous, Jun 2026
SEA - SJC
Read more Alaska Airlines reviews

Check in & bag drop was straightforward. Alaskair changed the gate approx 40 min before departure, and I only became aware due to Google wallet update to my boarding pass. Had to move from gate N1 to C9 which required use of the Train, luckily I had time available.

My boarding passes were pulled from my Apple wallet and my 3 family members who were all sitting together in the same row all got put middle seats and were one of the last to board and barely were able to get our bags in the luggage bins.

I was surprised by everything. The cleanliness, the punctuality, the friendliness of the crew… and the Wi-Fi! Please keep up the good work.

I had to cancel this trip due to medical reasons. I took out flight insurance but I was unable to cancel my reservation on either Kayak or Alaska. I need proof that I did not take this flight to get my refund. I have tried for a week and a half together that information from either Kayak or Alaska but so far I have gotten no response. I am very disappointed!

See what I wrote in the previous section. This was a terrible experience. I would like refund.. I even paid an extra $70 for an aisle seat closer to the front to ensure that I got off early enough to catch the next flight. The fact that the plane did not wait, and even left eearlier, knowing that the first flight came in late, and was moved to a terminal three train stops away is appalling. My friend that flew JetBlue, their flight was delayed and came in later and the connecting flight WAITED for them. How is it that JetBlue could do that, and Alaska could not.

Alaska Airlines staff go out of their way to accommodate my fragile musical instrument, every time. They are unlike any other airline. I've experienced this can-do attitude on several flights with different staff, so this must be the culture of their company. I appreciate Alaska!

It was a bumpy flight but the crew was very attentive and made it a safe and enjoyable experience.

i canceled my flight from SEA to SFO, SNA to SEA and received full refund from Alaska Airlines. i am pleased with the customer service.

Departing flight for our weekend trip was cancelled due to weather which meant our return flight was useless. The whole thing was difficult to get support through but Alaska did recover and was able to reimburse us for the flights yesterday. For some reason, Kayak was not kept in the loop, adding to the confusion.

i canceled my return flight package with Alaska Airlines. Customer Service was excellent and assisted me to cancelled both of our reservations and returned the payment in full. that is excellent service and understanding and empathy of the customers' needs. i like Alaska Airlines and recommend AS to everyone.

Everything you need to know for your flight from Seattle to San Jose

Information on your arrival and departure airports