Find Cheapest Airlines Flying from Seattle to San Francisco

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

Explore the cheapest flights from Seattle to San Francisco in the next three months. Based on Trip.com's data from the latest 7 days, one-way direct flights start at AU$ 60, and round-trip direct tickets start at AU$ 123.

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

Seattle to San Francisco Flight Details

The distance between Seattle and San Francisco is approximately 1,093.2km. It takes around 2 hours 18 minutes on average to fly from Seattle to San Francisco. Based on Trip.com's data travel demand peaks in July. The off-season for travel is October.

Cheapest one-way flight priceAU$ 60
Cheapest return ticket priceAU$ 123
Off-season for travelOctober
Peak season for travelJuly
Flight distance1,093.2km
Average flight time2 hours 18 minutes
Popular airlineAlaska Airlines
Flight statistics for the Seattle–San Francisco route are based on aggregated booking data from Trip.com over the past 12 months.

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

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

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

According to Trip.com's data, the cheapest month for flights from Seattle to San Francisco is September, with an average price of AU$ 196. Conversely, the most expensive month is typically November, with an average price of up to AU$ 262.

AU$ 262
AU$ 229
AU$ 196
AU$ 163
    Cheapest
  • AU$ 219
    Mar
  • AU$ 236
    Apr
  • AU$ 204
    May
  • AU$ 228
    Jun
  • AU$ 240
    Jul
  • AU$ 241
    Aug
  • AU$ 196
    Sep
  • AU$ 213
    Oct
  • AU$ 262
    Nov
  • AU$ 215
    Dec
  • AU$ 199
    Jan
  • AU$ 233
    Feb

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

Average price of round-trip flights from Seattle to San Francisco 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 Seattle to San Francisco are found during January, with an average price of AU$ 293. Conversely, the highest prices are found during February, with an average price of up to AU$ 655.

AU$ 655
AU$ 474
AU$ 293
AU$ 112
    Cheapest
  • AU$ 523
    Mar
  • AU$ 473
    Apr
  • AU$ 336
    May
  • AU$ 440
    Jun
  • AU$ 385
    Jul
  • AU$ 388
    Aug
  • AU$ 296
    Sep
  • AU$ 386
    Oct
  • AU$ 318
    Nov
  • AU$ 339
    Dec
  • AU$ 293
    Jan
  • AU$ 655
    Feb

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

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

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

AU$ 262
AU$ 225
AU$ 187
AU$ 150
    Cheapest
  • AU$ 250
    Mon
  • AU$ 201
    Tue
  • AU$ 187
    Wed
  • AU$ 213
    Thu
  • AU$ 212
    Fri
  • AU$ 219
    Sat
  • AU$ 262
    Sun

When is the cheapest day to fly from Seattle to San Francisco during Good Friday?

Data is based on the lowest one-way fares from Seattle to San Francisco during Good Friday, sourced from the Trip.com database over the last 3 days.

During Good Friday, the cheapest flights from Seattle to San Francisco are on Apr 1, with the lowest fare of AU$ 67.

AU$ 241
AU$ 154
AU$ 67
0
    Cheapest
  • AU$ 83
    Mar 30
  • AU$ 82
    Mar 31
  • AU$ 67
    Apr 1
  • AU$ 149
    Apr 2
  • AU$ 229
    Apr 3
  • AU$ 241
    Apr 4
  • AU$ 188
    Apr 5

Flight FAQs

  • Which airlines offer the cheapest flights from Seattle (SEA) to San Francisco (SFO)?

    Based on Trip.com data, Alaska Airlines offers one-way fares as low as AU$ 60 on Cheapest nonstop routes (e.g. SEA to SFO on Fri, Apr 17), while Hawaiian Airlines offers Cheapest nonstop round-trips from AU$ 123 departing on Fri, Apr 17 and returning on Wed, Apr 22.
  • At the moment, you can catch a direct flight from Seattle to San Francisco 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 Seattle (SEA) to San Francisco (SFO).
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Seattle to San Francisco 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 113 flight per week flying from Seattle to San Francisco. You can check the weekly schedule for popular airlines on this route below: Delta Air Lines: -/-/T/W/T/F/- -- DL976 (07:56)
  • To find best deals on flights from Seattle to San Francisco, 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 Fri, Apr 17, with one-way flights priced at just AU$ 60.
    · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Alaska 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 San Francisco travel is around July.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from Seattle to San Francisco is October, when demand for travel is lower.
  • After crunching the numbers on our March flight calendar, it's currently cheapest to fly from Seattle to San Francisco on March 25, 2026 with Alaska Airlines, with prices starting at AU$ 50.
  • You can land at any one of the following hubs in San Francisco, with Seattle-Tacoma International Airport to San Francisco International Airport (SEA-SFO) is by far the most common option on this route: San Francisco International Airport (SFO).
  • The time difference between San Francisco and Seattle 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 Seattle toSan Francisco

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

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

Based on Trip.com data from the past 12 months, Frontier Airlines offers the cheapest nonstop flights from Seattle to San Francisco, with an average price of AU$ 179.

AU$ 107
AU$ 179
AU$ 251
AU$ 323
AU$ 395
Frontier Airlines
AU$ 179
Frontier Airlines
Delta Air Lines
AU$ 207
Delta Air Lines
Hawaiian Airlines
AU$ 236
Hawaiian Airlines
Alaska Airlines
AU$ 251
Alaska Airlines
United Airlines
AU$ 326
United Airlines
American Airlines
AU$ 395
American Airlines

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

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

Based on Trip.com data from the past month, Alaska Airlines/Hawaiian Airlines/Air Tahiti Nui operates the most flights from Seattle to San Francisco, with 52 flight per week.

36
41
47
52
Alaska Airlines
52
Alaska Airlines
Hawaiian Airlines
52
Hawaiian Airlines
Air Tahiti Nui
52
Air Tahiti Nui
United Airlines
42
United Airlines
Virgin Australia
41
Virgin Australia
Air New Zealand
41
Air New Zealand

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

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

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

445
374
302
231
Highest
369
Mon
302
Tue
304
Wed
361
Thu
445
Fri
408
Sat
392
Sun