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Cheap flights from San Jose, California to Seattle from £48

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 16/3. Fares are subject to change and may not be available on all flights or dates of travel.
SJC — SEA
15 Mar — 22 Mar1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from San Jose to Seattle/Tacoma Intl are usually found in January or March, booked 47 days in advance, depart on a Monday or Tuesday and return on a Monday

Cheap flight deals from San Jose to Seattle

Enter your travel dates to find the best prices.

Cheapest flights from San Jose to Seattle
Explore the most affordable flight options available from San Jose to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 February 2026.

Wed 4/310:16
SJC
-
SEA
Nonstop2h 18m
Alaska Airlines
Wed 4/314:59
SEA
-
SJC
Nonstop2h 10m
Alaska Airlines
Deal found 11/2£112
Tue 24/308:00
SJC
-
SEA
Nonstop2h 20m
Alaska Airlines
Tue 31/315:59
SEA
-
SJC
Nonstop2h 12m
Alaska Airlines
Deal found 12/2£115
Sat 7/314:25
SJC
-
SEA
Nonstop2h 19m
Delta
Mon 9/308:36
SEA
-
SJC
Nonstop2h 21m
Delta
Deal found 10/2£120
Thu 5/310:16
SJC
-
SEA
Nonstop2h 18m
Alaska Airlines
Thu 5/314:59
SEA
-
SJC
Nonstop2h 10m
Alaska Airlines
Deal found 11/2£122
Wed 11/306:35
SJC
-
SEA
Nonstop2h 15m
Southwest
Tue 17/314:35
SEA
-
SJC
1 stop5h 00m
Southwest
Deal found 13/2£123
Thu 5/307:15
SJC
-
SEA
Nonstop2h 30m
Delta
Mon 9/319:59
SEA
-
SJC
Nonstop2h 18m
Delta
Deal found 11/2£125
Wed 4/309:00
SJC
-
SEA
2 stops7h 00m
Southwest
Sat 7/307:15
SEA
-
SJC
Nonstop2h 15m
Southwest
Deal found 10/2£126
Sat 7/318:15
SJC
-
SEA
1 stop7h 10m
Southwest
Mon 9/306:30
SEA
-
SJC
Nonstop2h 10m
Southwest
Deal found 10/2£128
Tue 19/518:00
SJC
-
SEA
Nonstop2h 18m
Alaska Airlines
Wed 27/507:01
SEA
-
SJC
Nonstop2h 12m
Alaska Airlines
Deal found 12/2£130
Thu 19/306:00
SJC
-
SEA
Nonstop2h 25m
Southwest
Tue 24/307:00
SEA
-
SJC
2 stops6h 45m
Southwest
Deal found 13/2£131
Thu 12/306:00
SJC
-
SEA
Nonstop2h 25m
Southwest
Wed 18/306:00
SEA
-
SJC
1 stop12h 15m
Southwest
Deal found 11/2£132

Find flight deals from San Jose to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from San Jose (SJC) to Seattle (SEA). 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 13 February 2026.

Round-trip from

£112

One-way from

£48

Popular in

December

Cheapest in

January

Average price

£185
Alaska Airlines
  • Alaska Airlines
  • 4/3-4/3
  • Nonstop
  • 4h 28m total
  • San Jose to Seattle
Search Deals
Frontier
  • Frontier
  • 16/3
  • 1 total stop
  • 6h 49m total
  • San Jose to Seattle
Search Deals
Highest demand for flights based on searches. 1% potential increase in price (£2 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£3 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 2026
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Cheapflights Fare Finder

 
Customise your flight search to find flights from San Jose to Seattle 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 13 February 2026.
Use the filters below to find and compare flights from San Jose to Seattle that are best for you.

Fly from

San Jose

Fly to

Seattle

Route

Depart

Return

Price

San JoseSeattle

SJC - SEA

SJCSEA

San Jose

Tue 31/3

10:22-12:40

Nonstop2h 18m

Seattle/Tacoma Intl

Wed 8/4

07:13-09:28

Nonstop2h 15m

£115

San JoseSeattle

SJC - SEA

SJCSEA

San Jose

Wed 11/3

11:40-13:58

Nonstop2h 18m

Seattle/Tacoma Intl

Tue 17/3

12:34-14:57

Nonstop2h 23m

£115

San JoseSeattle

SJC - SEA

SJCSEA

San Jose

Sat 9/5

11:37-14:00

Nonstop2h 23m

Seattle/Tacoma Intl

Wed 13/5

14:45-17:03

Nonstop2h 18m

£115

San JoseSeattle

SJC - SEA

SJCSEA

San Jose

Sat 7/3

18:10-20:29

Nonstop2h 19m

Seattle/Tacoma Intl

Wed 11/3

11:28-13:42

Nonstop2h 14m

£115

San JoseSeattle

SJC - SEA

SJCSEA

San Jose

Wed 4/3

14:25-16:44

Nonstop2h 19m

Seattle/Tacoma Intl

Sat 7/3

08:35-10:55

Nonstop2h 20m

£115

San JoseSeattle

SJC - SEA

SJCSEA

San Jose

Thu 19/3

06:00-08:25

Nonstop2h 25m

Seattle/Tacoma Intl

Sat 21/3

07:15-09:30

Nonstop2h 15m

£120

San JoseSeattle

SJC - SEA

SJCSEA

San Jose

Mon 6/4

20:20-22:35

Nonstop2h 15m

Seattle/Tacoma Intl

Tue 21/4

07:50-10:05

Nonstop2h 15m

£120

San JoseSeattle

SJC - SEA

SJCSEA

San Jose

Sat 7/3

11:45-14:06

Nonstop2h 21m

Seattle/Tacoma Intl

Mon 9/3

08:36-10:57

Nonstop2h 21m

£120

San JoseSeattle

SJC - SEA

SJCSEA

San Jose

Mon 4/5

11:35-14:00

Nonstop2h 25m

Seattle/Tacoma Intl

Sat 16/5

17:30-19:50

Nonstop2h 20m

£120

San JoseSeattle

SJC - SEA

SJCSEA

San Jose

Tue 10/3

14:48-18:38

1 stop3h 50m

Seattle/Tacoma Intl

Sat 14/3

20:47-22:59

Nonstop2h 12m

£123

Flights are sorted by cheapest return flights first.

Deals found on 11/2

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

Have a flexible travel schedule? Discover the best time to fly to Seattle from San Jose 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 San Jose to Seattle

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

Use this chart to determine the optimal time to book a return flight from San Jose to Seattle. Price data was last updated on 6 February 2026.

The price you pay for your flight from San Jose, California to Seattle may vary depending on when you book. For the best chance of a lower fare, look to book 47 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, January is the cheapest month in which you can book a flight from San Jose, California to Seattle (average of £57). Flying from San Jose, California to Seattle in May is currently the most expensive (average of £101). 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 SJC to SEA?

Find hourly flight availability from San Jose to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 13 February 2026.

It’s typically best to fly out from San Jose, California to Seattle in the afternoon. Doing so could potentially save you 79% on the flight price compared to flying at midday, which is usually more expensive.

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

Related info for your journey

Find useful and relevant information for your journey from San Jose to Seattle. 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 San Jose, California to Seattle flight route?

    The San Jose to Seattle/Tacoma Intl flight path was viewed by 13 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 San Jose, California to Seattle?

    Airlines like Delta, Alaska Airlines, and Southwest fly from San Jose, California to Seattle in about 2h 18m. The time it takes to get you to your destination is usually consistent. Airlines will cover a distance of 697 mi. All flights are typically direct.

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

    Consider Aeromexico (94%), Qatar Airways (91%) or Air Tahiti Nui (90%) when booking your flight. These represent the most reliable airlines when flying from San Jose, California to Seattle.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from San Jose to Seattle 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 San Jose, California to Seattle?

    Currently, January is the cheapest month in which you can book a flight from San Jose, California to Seattle (average of £57). Flying from San Jose, California to Seattle in May is currently the most expensive (average of £101). 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

Travelling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
Federal Way
SeaTac

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Alternative routes for San Jose to Seattle

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Fly with Cheapflights

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How does Cheapflights help users find flights from San Jose to Seattle?

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

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Seattle from San Jose.

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

Cheapflights does show flights with no change fees to all users. To see these options for flights from San Jose to Seattle, users can toggle the no change fees filter when performing a flight search.

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

Yes! Start tracking prices for San Jose to Seattle flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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