Find Cheapest Airlines Flying from San Jose to Seattle

Choose from 1 carriers that fly from San Jose to Seattle, including Alaska Airlines, Enjoy the cheapest tickets on this route with Hawaiian Airlines.
Alaska Airlines logo Alaska Airlines
Airlines are determined based on actual purchased flight tickets from San Jose to Seattle according to previous 12 months data from Trip.com.

Explore the cheapest flights from San Jose to Seattle in the next three months. Based on Trip.com's data from the latest 7 days, one-way direct flights start at AU$ 58, and round-trip direct tickets start at AU$ 116.

Displayed flight fares from San Jose to Seattle are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.

San Jose to Seattle Flight Details

The distance between San Jose and Seattle is approximately 1,123.19km. It takes around 2 hours 18 minutes on average to fly from San Jose to Seattle. Based on Trip.com's data travel demand peaks in July. The off-season for travel is December.

Cheapest one-way flight priceAU$ 58
Cheapest return ticket priceAU$ 116
Off-season for travelDecember
Peak season for travelJuly
Flight distance1,123.19km
Average flight time2 hours 18 minutes
Popular airlineAlaska Airlines
Flight statistics for the San Jose–Seattle route are based on aggregated booking data from Trip.com over the past 12 months.

Trip.com Price Insights on Flights from San Jose to Seattle

What is the cheapest month for one-way flights from San Jose to Seattle?

Average price of one-way flights from San Jose to Seattle purchased by Trip.com users by month over the past 12 months.

According to Trip.com's data, the cheapest month for flights from San Jose to Seattle is Jan, with an average price of AU$ 170. Conversely, the most expensive month is typically May, with an average price of up to AU$ 338.

AU$ 338
AU$ 254
AU$ 170
AU$ 86
  • AU$ 170
    Jan
  • AU$ 211
    Feb
  • AU$ 199
    Mar
  • AU$ 303
    Apr
  • AU$ 338
    May
  • AU$ 224
    Jun
  • AU$ 286
    Jul
  • AU$ 305
    Aug
  • AU$ 201
    Sep
  • AU$ 272
    Oct
  • AU$ 285
    Nov
  • AU$ 302
    Dec

What is the cheapest month for round-trip flights from San Jose to Seattle?

Average price of round-trip flights from San Jose to Seattle purchased by Trip.com users by month over the past 12 months.

According to historical data from Trip.com, the lowest prices for flights from San Jose to Seattle are found during Nov, with an average price of AU$ 215. Conversely, the highest prices are found during Apr, with an average price of up to AU$ 555.

AU$ 555
AU$ 385
AU$ 215
AU$ 45
    Cheapest
  • AU$ 510
    Jan
  • AU$ 330
    Feb
  • AU$ 382
    Mar
  • AU$ 555
    Apr
  • AU$ 541
    May
  • AU$ 456
    Jun
  • AU$ 527
    Jul
  • AU$ 476
    Aug
  • AU$ 283
    Sep
  • AU$ 232
    Oct
  • AU$ 215
    Nov
  • AU$ 552
    Dec

What's the cheapest day to fly from San Jose to Seattle?

Data is based on the average flight price for each day of the week from San Jose to Seattle on Trip.com over the past 12 months.

Based on Trip.com data from the past 12 months, the cheapest day to fly from San Jose to Seattle is Tue, with average prices lower than on other days. Avoid Fri, as prices are usually highest then.

AU$ 368
AU$ 318
AU$ 267
AU$ 216
  • AU$ 284
    Mon
  • AU$ 267
    Tue
  • AU$ 274
    Wed
  • AU$ 289
    Thu
  • AU$ 368
    Fri
  • AU$ 279
    Sat
  • AU$ 358
    Sun

Flight FAQs

  • Which airlines offer the cheapest flights from San Jose (SJC) to Seattle (SEA)?

    Based on Trip.com data, Hawaiian Airlines offers one-way fares as low as AU$ 58 on Cheapest nonstop routes (e.g. SJC to SEA on Sun, Feb 22), while Alaska Airlines offers Cheapest nonstop round-trips from AU$ 116 departing on Sun, Feb 15 and returning on Sun, Feb 22.
  • At the moment, you can catch a direct flight from San Jose to Seattle with the following airlines, including: Alaska Airlines Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.
  • It takes about 2 hours 18 minutes to fly from San Jose (SJC) to Seattle (SEA).
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from San Jose to Seattle is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.
  • Based on Trip.com data in the past 4 weeks, there is 90 flight per week flying from San Jose to Seattle. You can check the weekly schedule for popular airlines on this route below: Alaska Airlines: S/M/T/W/T/F/S -- AS1314 (09:14)
  • To find best deals on flights from San Jose to Seattle, you can use various tools on Trip.com:
    · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Sun, Feb 22, with one-way flights priced at just AU$ 58.
    · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Hawaiian Airlines.
    · Set up price alerts to easily monitor ticket prices without having to check every day.
    · Check Trip.com flight deals and promo codes frequently.
    · Avoid peak season unless you book very early. It seems the peak season for Seattle travel is around July.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from San Jose to Seattle is December, when demand for travel is lower.
  • After crunching the numbers on our January flight calendar, it's currently cheapest to fly from San Jose to Seattle on January 24, 2026 with Alaska Airlines, with prices starting at AU$ 115.
  • You can land at any one of the following hubs in Seattle, with San Jose International Airport to Seattle–Tacoma International Airport (SJC-SEA) is by far the most common option on this route: King County (Boeing Field) International Airport (BFI) Kenmore Air - Lake Union (LKE) Seattle–Tacoma International Airport (SEA).
  • The time difference between Seattle and San Jose is 0h.
  • Tickets can only be changed or cancelled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.

Trip.com Airline Insights on Flights from San Jose toSeattle

Which airlines offer the cheapest nonstop flights from San Jose to Seattle?

Data is based on the average price of all nonstop flights from San Jose to Seattle on Trip.com in the past 12 months.

Based on Trip.com data from the past 12 months, Alaska Airlines offers the cheapest nonstop flights from San Jose to Seattle, with an average price of AU$ 321.

AU$ 114
AU$ 232
AU$ 350
AU$ 467
Frontier Airlines
AU$ 114
Frontier Airlines
Delta Air Lines
AU$ 241
Delta Air Lines
Hawaiian Airlines
AU$ 311
Hawaiian Airlines
Alaska Airlines
AU$ 321
Alaska Airlines
American Airlines
AU$ 467
American Airlines

Which airlines operate the most flights from San Jose to Seattle?

Data is based on the number of flights from San Jose to Seattle operated by each airline on Trip.com in the past month.

Based on Trip.com data from the past month, Alaska Airlines operates the most flights from San Jose to Seattle, with 36 flight per week.

9
18
27
36
Alaska Airlines
36
Alaska Airlines
Hawaiian Airlines
36
Hawaiian Airlines
Air Tahiti Nui
36
Air Tahiti Nui
Delta Air Lines
26
Delta Air Lines
Korean Air
18
Korean Air
Virgin Atlantic
18
Virgin Atlantic

How many flights are there each day from San Jose to Seattle?

The data is based on the flight numbers for each day of the week from San Jose to Seattle within the Trip.com database over the past month.

Based on Trip.com data from the past month, the most flights from San Jose to Seattle depart on Friday, and the fewest flights depart on Wednesday.

199
168
137
106
160
Mon
153
Tue
137
Wed
147
Thu
199
Fri
181
Sat
172
Sun