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Cheap flights from Seattle to San Jose, California from £52

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 31/12. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SJC
30 Nov — 7 Dec1
1 adult
1 adult, Economy, 0 bags

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Enter your travel dates to find the best prices.

Cheapest flights from Seattle to San Jose
Explore the most affordable flight options available from Seattle to San Jose. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 31 October 2025.

Sat 13/1217:46SEA - SJC
Nonstop2h 14mAlaska Airlines
Tue 6/117:57SJC - SEA
Nonstop2h 17mAlaska Airlines
Deal found 29/10£104
Sat 13/1208:25SEA - SJC
1 stop5h 58mAlaska Airlines
Sat 13/1217:50SJC - SEA
Nonstop2h 17mAlaska Airlines
Deal found 30/10£107
Sat 13/1212:45SEA - SJC
1 stop6h 39mAlaska Airlines
Tue 16/1215:49SJC - SEA
Nonstop2h 17mAlaska Airlines
Deal found 30/10£112
Sat 13/1206:00SEA - SJC
1 stop8h 50mSouthwest
Tue 16/1216:05SJC - SEA
1 stop6h 25mSouthwest
Deal found 30/10£118
Thu 4/1213:42SEA - SJC
Nonstop2h 14mAlaska Airlines
Wed 10/1207:40SJC - SEA
1 stop6h 59mAlaska Airlines
Deal found 29/10£119
Thu 4/1208:10SEA - SJC
Nonstop2h 15mSouthwest
Tue 9/1211:15SJC - SEA
2 stops7h 05mSouthwest
Deal found 29/10£123
Thu 4/1216:45SEA - SJC
Nonstop2h 10mAlaska Airlines
Sun 7/1209:49SJC - SEA
1 stop4h 50mAlaska Airlines
Deal found 30/10£127
Fri 5/1209:25SEA - SJC
2 stops7h 25mSouthwest
Mon 8/1217:30SJC - SEA
Nonstop2h 15mSouthwest
Deal found 28/10£131
Fri 5/1212:45SEA - SJC
1 stop4h 52mAlaska Airlines
Sun 7/1207:40SJC - SEA
1 stop6h 59mAlaska Airlines
Deal found 29/10£134
Wed 17/1217:46SEA - SJC
Nonstop2h 14mAlaska Airlines
Wed 31/1206:15SJC - SEA
Nonstop2h 26mAlaska Airlines
Deal found 31/10£134
Thu 4/1209:25SEA - SJC
2 stops7h 25mSouthwest
Sun 7/1216:10SJC - SEA
1 stop8h 25mSouthwest
Deal found 30/10£138

Cheap flight deals from Seattle to San Jose

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to San Jose (SJC). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 31 October 2025.

Round-trip from

£104

One-way from

£52

Popular in

December

Cheapest in

January

Average price

£179
Alaska Airlines
  • Alaska Airlines
  • 13/12-6/1
  • Nonstop
  • 4h 31m total
  • Seattle to San Jose
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Southwest
  • Southwest
  • 31/12
  • Nonstop
  • 2h 15m total
  • Seattle to San Jose
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (£11 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£4 potential savings vs. average return price).
Search Deals
Average for round-trip flights in October 2025
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Cheapflights Fare Finder

 
Customise your flight search to find flights from Seattle to San Jose that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 31 October 2025.
Use the filters below to find and compare flights from Seattle to San Jose that are best for you.

Fly from

Seattle

Fly to

San Jose

Route

Depart

Return

Price

SeattleSan Jose

SEA - SJC

SEASJC

Seattle/Tacoma Intl

Sat 13/12

07:55-10:14

Nonstop2h 19m

San Jose

Sat 13/12

15:49-18:06

Nonstop2h 17m

£104

SeattleSan Jose

SEA - SJC

SEASJC

Seattle/Tacoma Intl

Wed 11/2

07:30-09:48

Nonstop2h 18m

San Jose

Wed 18/2

15:05-17:21

Nonstop2h 16m

£105

SeattleSan Jose

SEA - SJC

SEASJC

Seattle/Tacoma Intl

Thu 22/1

17:52-20:04

Nonstop2h 12m

San Jose

Sat 24/1

11:00-13:19

Nonstop2h 19m

£112

SeattleSan Jose

SEA - SJC

SEASJC

Seattle/Tacoma Intl

Sat 20/12

21:41-23:59

Nonstop2h 18m

San Jose

Mon 5/1

06:15-08:41

Nonstop2h 26m

£112

SeattleSan Jose

SEA - SJC

SEASJC

Seattle/Tacoma Intl

Thu 12/2

19:55-22:03

Nonstop2h 08m

San Jose

Wed 18/2

17:00-19:10

Nonstop2h 10m

£112

SeattleSan Jose

SEA - SJC

SEASJC

Seattle/Tacoma Intl

Tue 17/2

19:55-22:03

Nonstop2h 08m

San Jose

Mon 23/2

10:05-12:16

Nonstop2h 11m

£112

SeattleSan Jose

SEA - SJC

SEASJC

Seattle/Tacoma Intl

Fri 5/12

20:48-22:59

Nonstop2h 11m

San Jose

Mon 8/12

17:00-19:17

Nonstop2h 17m

£119

SeattleSan Jose

SEA - SJC

SEASJC

Seattle/Tacoma Intl

Thu 4/12

13:42-15:56

Nonstop2h 14m

San Jose

Wed 10/12

07:40-14:39

1 stop6h 59m

£119

SeattleSan Jose

SEA - SJC

SEASJC

Seattle/Tacoma Intl

Thu 8/1

07:30-09:48

Nonstop2h 18m

San Jose

Mon 12/1

11:00-13:19

Nonstop2h 19m

£119

SeattleSan Jose

SEA - SJC

SEASJC

Seattle/Tacoma Intl

Fri 23/1

07:30-09:48

Nonstop2h 18m

San Jose

Sun 25/1

09:05-11:21

Nonstop2h 16m

£119

Flights are sorted by cheapest return flights first.

Deals found on 29/10

Showing 1-10 of 22 results
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Best time to book a flight from Seattle to San Jose

Have a flexible travel schedule? Discover the best time to fly to San Jose from Seattle with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

How far ahead should I book a flight from Seattle to San Jose, California?

Use this chart to determine the optimal time to book a return flight from Seattle to San Jose. Price data was last updated on 24 October 2025.

To ensure you get the cheapest price possible for a flight from Seattle to San Jose, California, you should look to book at least 49 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Seattle to San Jose, California?

Currently, January is the cheapest month in which you can book a flight from Seattle to San Jose, California (average of £66). Flying from Seattle to San Jose, California in May is currently the most expensive (average of £104). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SEA to SJC?

Find hourly flight availability from Seattle to San Jose. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 31 October 2025.

When flying from Seattle to San Jose, California, the time of day you fly usually plays a role in the price. Save by searching for a flight at midday, which can drop the price by up to 19% versus a flight in the morning.

Related info for your journey

Find useful and relevant information for your journey from Seattle to San Jose. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How popular is this Seattle to San Jose, California flight route?

    Flights from Seattle/Tacoma Intl to San Jose have been viewed 1 times in the past calendar month.

  • How long is the flight from Seattle to San Jose, California?

    A quick flight from Seattle to San Jose, California can take about 2h 19m. Alaska Airlines provides one of the quickest options available for as low as £104. There are 697 mi between Seattle and San Jose, California. Generally, flights for this route are direct.

  • What are the most reliable airlines from Seattle to San Jose, California?

    Consider Finnair (100%), WestJet (98%) or Air France (95%) when booking your flight. These represent the most reliable airlines when flying from Seattle to San Jose, California.

  • Can I find deals for flights from Seattle to San Jose that include hotel bookings?

    Yes. In addition to deals on Seattle to San Jose flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Seattle to San Jose?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to San Jose.

  • Can I find deals for business class flights from Seattle to San Jose?

    Yes. Cheapflights offers flight deals from Seattle to San Jose by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seattle to San Jose, California?

    Currently, January is the cheapest month in which you can book a flight from Seattle to San Jose, California (average of £66). Flying from Seattle to San Jose, California in May is currently the most expensive (average of £104). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Seattle to San Jose. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Seattle to San Jose?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Seattle to San Jose.

Can Cheapflights find flights from Seattle to San Jose with no change fees?

Certainly. Search results for flights to San Jose from Seattle shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Seattle to San Jose become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to San Jose from Seattle today and book when prices fit your budget.

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