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Cheap flights from Seattle to San Jose from £51

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 11/11. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SJC
17 Oct — 24 Oct1
1 adult
1 adult, Economy

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 17 September 2025.

Round-trip from

£100

One-way from

£51

Popular in

December

Cheapest in

August

Average price

£185
Delta
  • Delta
  • 25/10-28/10
  • Nonstop
  • 4h 50m total
  • Seattle to San Jose
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Delta
  • Delta
  • 17/12
  • Nonstop
  • 2h 16m total
  • Seattle to San Jose
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (£10 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£3 potential savings vs. average return price).
Search Deals
Average for round-trip flights in September 2025
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Find flight deals from Seattle to San Jose

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 17 September 2025.

Sat 8/1108:35SEA - SJC
Nonstop2h 16mDelta
Sat 8/1119:35SJC - SEA
Nonstop2h 25mDelta
Deal found 15/9£100
Mon 27/1008:05SEA - SJC
Nonstop2h 20mSouthwest
Wed 29/1006:30SJC - SEA
1 stop8h 35mSouthwest
Deal found 16/9£103
Thu 16/1020:50SEA - SJC
Nonstop2h 05mSouthwest
Mon 20/1016:35SJC - SEA
2 stops8h 15mSouthwest
Deal found 16/9£107
Wed 5/1113:35SEA - SJC
Nonstop2h 19mAlaska Airlines
Mon 10/1119:47SJC - SEA
Nonstop2h 27mAlaska Airlines
Deal found 16/9£108
Wed 29/1014:10SEA - SJC
1 stop5h 11mDelta
Fri 31/1007:15SJC - SEA
Nonstop2h 30mDelta
Deal found 16/9£111
Sat 25/1015:50SEA - SJC
Nonstop2h 15mSouthwest
Tue 28/1011:55SJC - SEA
2 stops6h 45mSouthwest
Deal found 15/9£111
Fri 10/1015:05SEA - SJC
Nonstop2h 15mAlaska Airlines
Wed 22/1008:00SJC - SEA
Nonstop2h 24mAlaska Airlines
Deal found 16/9£115
Thu 9/1012:50SEA - SJC
Nonstop2h 10mSouthwest
Wed 15/1010:30SJC - SEA
2 stops8h 45mSouthwest
Deal found 14/9£119
Tue 7/1019:50SEA - SJC
Nonstop2h 15mSouthwest
Sat 11/1018:20SJC - SEA
Nonstop2h 15mSouthwest
Deal found 15/9£124

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 17 September 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

Tue 17/2

12:00-14:10

Nonstop2h 10m

San Jose

Wed 25/2

13:00-15:15

Nonstop2h 15m

£100

SeattleSan Jose

SEA - SJC

SEASJC

Seattle/Tacoma Intl

Tue 3/3

09:55-12:08

Nonstop2h 13m

San Jose

Wed 4/3

10:05-12:16

Nonstop2h 11m

£100

SeattleSan Jose

SEA - SJC

SEASJC

Seattle/Tacoma Intl

Wed 18/2

11:15-13:37

Nonstop2h 22m

San Jose

Sat 21/2

18:25-20:49

Nonstop2h 24m

£108

SeattleSan Jose

SEA - SJC

SEASJC

Seattle/Tacoma Intl

Tue 17/2

19:55-22:03

Nonstop2h 08m

San Jose

Thu 19/2

17:00-19:10

Nonstop2h 10m

£108

SeattleSan Jose

SEA - SJC

SEASJC

Seattle/Tacoma Intl

Wed 18/2

11:15-13:37

Nonstop2h 22m

San Jose

Thu 19/2

11:35-13:59

Nonstop2h 24m

£108

SeattleSan Jose

SEA - SJC

SEASJC

Seattle/Tacoma Intl

Tue 4/11

17:48-20:00

Nonstop2h 12m

San Jose

Thu 13/11

14:39-17:03

Nonstop2h 24m

£108

SeattleSan Jose

SEA - SJC

SEASJC

Seattle/Tacoma Intl

Thu 9/10

08:35-10:51

Nonstop2h 16m

San Jose

Wed 15/10

07:15-09:45

Nonstop2h 30m

£108

SeattleSan Jose

SEA - SJC

SEASJC

Seattle/Tacoma Intl

Wed 15/10

13:37-15:57

Nonstop2h 20m

San Jose

Thu 16/10

07:15-09:45

Nonstop2h 30m

£108

SeattleSan Jose

SEA - SJC

SEASJC

Seattle/Tacoma Intl

Wed 26/11

20:35-09:40

1 stop13h 05m

San Jose

Tue 2/12

17:30-19:45

Nonstop2h 15m

£111

SeattleSan Jose

SEA - SJC

SEASJC

Seattle/Tacoma Intl

Tue 3/3

08:00-12:15

1 stop4h 15m

San Jose

Wed 4/3

07:30-11:38

1 stop4h 08m

£114

Flights are sorted by cheapest return flights first.

Deals found on 15/9

Showing 1-10 of 23 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?

Use this chart to determine the optimal time to book a return flight from Seattle to San Jose. Price data was last updated on 12 September 2025.

The best time to book flights from Seattle to San Jose is 49 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, November is the cheapest month in which you can book a flight from Seattle to San Jose (average of £505). Flying from Seattle to San Jose in July is currently the most expensive (average of £768). 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 17 September 2025.

When flying from Seattle to San Jose, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost for a return flight from Seattle to San Jose?

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 flight route?

    This flight path from Seattle/Tacoma Intl to San Jose was viewed by 1 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

    Departing from Seattle to San Jose will take you 2h 10m. Airlines will cover a distance of 697 mi. Generally, flights for this route are direct.

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

    Consider Horizon Air (100%), WestJet (95%) or Scandinavian Airlines (94%) when booking your flight. These represent the most reliable airlines when flying from Seattle to San Jose.

  • 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?

    Currently, November is the cheapest month in which you can book a flight from Seattle to San Jose (average of £505). Flying from Seattle to San Jose in July is currently the most expensive (average of £768). 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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How does Cheapflights help users find flights from Seattle to San Jose?

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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