Trip.com
>
Flights
>
Flights to United States
>
Flights to California
>
Flights to San Francisco
Hotels in San Francisco
>
Flights from Seattle to San Francisco

Cheapest airlines flights from Seattle to San Francisco

You can choose from 3 airlines that fly from Seattle to San Francisco, including Alaska Airlines, Hawaiian Airlines, and United Airlines. Delta Air Lines has lowest fares on this route.
Alaska Airlines logo Alaska Airlines
Hawaiian Airlines logo Hawaiian Airlines
United Airlines logo United Airlines
Airlines are determined based on actual purchased flight tickets from Seattle to San Francisco according to previous 12 months data from Trip.com.

Search for direct flights from Seattle to San Francisco in the next 3 months. Based on Trip.com's latest 7-day flight data, one-way direct flights start at US$43, and round-trip direct flights start at US$89.

      • Cheapest nonstop
        SEA 08:31
        2h 25m
        Nonstop
        SFO 10:56
        Seattle - San Francisco | Thu, Apr 30 | Alaska Airlines
        SFO 07:00
        2h 17m
        Nonstop
        SEA 09:17
        San Francisco - Seattle | Thu, May 7 | Alaska Airlines
        US$89 US$96
        7% off
        7% off
        US$96 US$89
      • SEA 21:24
        2h 20m
        Nonstop
        SFO 23:44
        Seattle - San Francisco | Mon, Apr 27 | Alaska Airlines
        SFO 17:47
        2h 15m
        Nonstop
        SEA 20:02
        San Francisco - Seattle | Sat, May 2 | Alaska Airlines
        US$89 US$96
        7% off
        7% off
        US$96 US$89
      • SEA 19:04
        2h 19m
        Nonstop
        SFO 21:23
        Seattle - San Francisco | Tue, Apr 28 | Alaska Airlines
        SFO 19:59
        2h 19m
        Nonstop
        SEA 22:18
        San Francisco - Seattle | Mon, May 4 | Alaska Airlines
        US$89 US$96
        7% off
        7% off
        US$96 US$89
      • SEA 17:58
        2h 16m
        Nonstop
        SFO 20:14
        Seattle - San Francisco | Sat, Apr 25 | Alaska Airlines
        SFO 07:00
        2h 17m
        Nonstop
        SEA 09:17
        San Francisco - Seattle | Thu, Apr 30 | Alaska Airlines
        US$89
        7% off
        US$96 US$89
      • SEA 21:24
        2h 20m
        Nonstop
        SFO 23:44
        Seattle - San Francisco | Fri, Apr 24 | Alaska Airlines
        SFO 10:25
        2h 19m
        Nonstop
        SEA 12:44
        San Francisco - Seattle | Wed, Apr 29 | Alaska Airlines
        US$89
        7% off
        US$96 US$89
      • SEA 17:55
        2h 16m
        Nonstop
        SFO 20:11
        Seattle - San Francisco | Tue, Apr 21 | Alaska Airlines
        SFO 17:31
        2h 15m
        Nonstop
        SEA 19:46
        San Francisco - Seattle | Mon, Apr 27 | Alaska Airlines
        US$89
        7% off
        US$96 US$89
      • SEA 15:48
        2h 21m
        Nonstop
        SFO 18:09
        Seattle - San Francisco | Wed, Apr 22 | Alaska Airlines
        SFO 07:00
        2h 17m
        Nonstop
        SEA 09:17
        San Francisco - Seattle | Wed, Apr 29 | Alaska Airlines
        US$89
        7% off
        US$96 US$89
      • SEA 21:24
        2h 20m
        Nonstop
        SFO 23:44
        Seattle - San Francisco | Mon, May 11 | Alaska Airlines
        SFO 18:39
        2h 20m
        Nonstop
        SEA 20:59
        San Francisco - Seattle | Sat, May 16 | Alaska Airlines
        US$89
        7% off
        US$96 US$89
      • SEA 11:50
        2h 31m
        Nonstop
        SFO 14:21
        Seattle - San Francisco | Tue, May 12 | Alaska Airlines
        SFO 20:52
        2h 21m
        Nonstop
        SEA 23:13
        San Francisco - Seattle | Sat, May 16 | Alaska Airlines
        US$89
        7% off
        US$96 US$89
      • SEA 14:53
        2h 21m
        Nonstop
        SFO 17:14
        Seattle - San Francisco | Wed, May 6 | Alaska Airlines
        SFO 07:00
        2h 17m
        Nonstop
        SEA 09:17
        San Francisco - Seattle | Sun, May 10 | Alaska Airlines
        US$89
        7% off
        US$96 US$89
      • SEA 13:00
        17h 25m
        1 stop
        SFO Invalid Date
        Seattle - San Francisco | Wed, Apr 22 | Normal Airline
        SFO 15:00
        6h
        Nonstop
        SEA 16:00
        San Francisco - Seattle | Fri, Apr 24 | Normal Airline
        Find more flights
        Find more flights
      • Cheapest nonstop
        SEA 21:20
        2h 15m
        Nonstop
        SFO 23:35
        Seattle - San Francisco | Sat, May 2 | Delta Air Lines
        US$43 US$82
        48% off
        48% off
        US$82 US$43
      • SEA 20:05
        2h 23m
        Nonstop
        SFO 22:28
        Seattle - San Francisco | Sat, May 2 | Alaska Airlines
        US$44 US$82
        46% off
        46% off
        US$82 US$44
      • SEA 07:15
        2h 19m
        Nonstop
        SFO 09:34
        Seattle - San Francisco | Thu, May 14 | Delta Air Lines
        US$45 US$82
        45% off
        45% off
        US$82 US$45
      • SEA 20:05
        2h 23m
        Nonstop
        SFO 22:28
        Seattle - San Francisco | Wed, May 6 | Alaska Airlines
        US$70
        15% off
        US$82 US$70
      • SEA 15:48
        2h 14m
        Nonstop
        SFO 18:02
        Seattle - San Francisco | Wed, May 13 | Alaska Airlines
        US$71
        13% off
        US$82 US$71
      • SEA 21:41
        2h 20m
        Nonstop
        SFO 00:01
        Seattle - San Francisco | Mon, May 18 | Delta Air Lines
        US$73
        11% off
        US$82 US$73
      • SEA 21:45
        2h 18m
        Nonstop
        SFO 00:03
        Seattle - San Francisco | Wed, Jun 3 | Delta Air Lines
        US$74
        10% off
        US$82 US$74
      • SEA 21:20
        2h 17m
        Nonstop
        SFO 23:37
        Seattle - San Francisco | Wed, May 6 | Delta Air Lines
        US$75
        9% off
        US$82 US$75
      • SEA 20:42
        2h 13m
        Nonstop
        SFO 22:55
        Seattle - San Francisco | Tue, Jun 16 | Alaska Airlines
        US$76
        7% off
        US$82 US$76
      • SEA 08:53
        2h 16m
        Nonstop
        SFO 11:09
        Seattle - San Francisco | Wed, Jun 17 | Alaska Airlines
        US$76
        7% off
        US$82 US$76
      • SEA 13:00
        17h 25m
        1 stop
        SFO Invalid Date
        Seattle - San Francisco | Wed, Apr 22 | Normal Airline
        Find more flights
        Find more flights

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 about 1,093.2 km. The average flying time from Seattle to San Francisco is around 2 hours 16 minutes. Based on Trip.com's latest data, travel demand is highest in July. The off-season for travel is October.

Cheapest one-way flight priceUS$43
Cheapest return ticket priceUS$89
Cheapest monthOctober
Peak season for travelJuly
Flight distance1,093.2 km
Average flight time2 hours 16 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

Which month has the cheapest one-way flights from Seattle to San Francisco?

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

Based on Trip.com’s data, the cheapest month for flights from Seattle to San Francisco is April, with an average price of US$129; while the month with the highest flight price is usually November, with an average price of up to US$186.

US$186
US$158
US$129
US$101
  • US$129
    Apr
  • US$145
    May
  • US$162
    Jun
  • US$171
    Jul
  • US$172
    Aug
  • US$139
    Sep
  • US$151
    Oct
  • US$186
    Nov
  • US$153
    Dec
  • US$142
    Jan
  • US$166
    Feb
  • US$178
    Mar

Which month has the cheapest round-trip flights from Seattle to San Francisco?

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

Based on data from Trip.com, the lowest prices for round-trip flights from Seattle to San Francisco are found during January, with an average price of US$208. Conversely, the highest prices are found during February, with an average price of up to US$466.

US$466
US$337
US$208
US$79
    Cheapest
  • US$339
    Apr
  • US$239
    May
  • US$313
    Jun
  • US$274
    Jul
  • US$276
    Aug
  • US$210
    Sep
  • US$275
    Oct
  • US$226
    Nov
  • US$241
    Dec
  • US$208
    Jan
  • US$466
    Feb
  • US$386
    Mar

What is the cheapest day of the week to fly from Seattle to San Francisco?

Average weekly flight prices from Seattle to San Francisco by travel date (Based on Trip.com’s past 12 months of data)

Based on Trip.com’s past 12 months of flight data, 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.

US$190
US$161
US$131
US$102
    Cheapest
  • US$177
    Mon
  • US$142
    Tue
  • US$131
    Wed
  • US$164
    Thu
  • US$149
    Fri
  • US$155
    Sat
  • US$190
    Sun

When is the cheapest day to fly from Seattle to San Francisco during International Workers' Day?

Based on Trip.com's data over the past 3 days, these are the lowest one-way flight prices from Seattle to San Francisco during International Workers' Day.

International Workers' Day is scheduled for May 1. The cheapest flights from Seattle to San Francisco are available on Apr 29, with fares starting at US$67.

US$131
US$99
US$67
US$35
  • US$71
    28
    Apr
  • US$67
    29
  • US$119
    30
  • US$68
    1
    May
  • US$131
    2
  • US$119
    3

Frequently Asked Questions

  • What are the cheapest flights from Seattle to San Francisco (SEA-SFO)?

    Based on Trip.com data, Delta Air Lines offers one-way fares as low as US$43 on Cheapest nonstop routes (e.g. SEA to SFO on Sat, May 2), while Alaska Airlines offers Cheapest nonstop round-trips from US$89 departing on Thu, Apr 30 and returning on Thu, May 7.
  • At the moment, you can catch a nonstop flight from Seattle to San Francisco with the following airlines, including: Alaska Airlines Hawaiian Airlines United 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 17 minutes to fly from Seattle to San Francisco.
  • 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 102 flight per week flying from Seattle to San Francisco. You can check the weekly schedule for popular airlines on this route below: Hawaiian Airlines: S/M/T/W/T/F/S -- HA6893 (08:03)
  • 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 Sat, May 2, with one-way flights priced at just US$43.
    · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Delta Air Lines.
    · 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 April flight calendar, it's currently cheapest to fly from Seattle to San Francisco on April 21, 2026 with Hawaiian Airlines, with prices starting at US$80.
  • 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 canceled 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 to San Francisco

Which airline offers the cheapest direct 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 over the past 12 months.

Based on Trip.com’s data from the past 12 months, Frontier Airlines provides the lowest-priced direct flights from Seattle to San Francisco, with fares starting at US$123.

US$71
US$123
US$176
US$229
US$281
Frontier Airlines
US$123
Frontier Airlines
Delta Air Lines
US$144
Delta Air Lines
Hawaiian Airlines
US$172
Hawaiian Airlines
Alaska Airlines
US$180
Alaska Airlines
United Airlines
US$239
United Airlines
American Airlines
US$281
American Airlines

Which airline operates the most flights from Seattle to San Francisco?

Total flights from Seattle to San Francisco across all airlines. (Based on Trip.com data from the past month)

Based on Trip.com’s data from the past month, Hawaiian Airlines/Alaska Airlines operates the most frequent flights from Seattle to San Francisco, with 44 flights per week.

34
37
41
44
Hawaiian Airlines
44
Hawaiian Airlines
Alaska Airlines
44
Alaska Airlines
United Airlines
40
United Airlines
Air New Zealand
40
Air New Zealand
Virgin Australia
40
Virgin Australia
Qatar Airways
37
Qatar Airways

How many flights fly from Seattle to San Francisco daily?

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 the past month's historical data from Trip.com, the number of flights from Seattle to San Francisco is the highest on Friday and the lowest on Wednesday.

428
366
304
242
Highest
349
Mon
308
Tue
304
Wed
349
Thu
428
Fri
360
Sat
370
Sun

Explore More Popular Flights

Note: Prices shown on this page are the estimated lowest prices found in the last 24 hours and include all taxes and fees.

Book with no extra fees

Prices displayed on this page are all-inclusive (incl. taxes, fuel surcharges, Civil Aviation Development Fund, etc.), and all fees are clearly shown before you pay. Charges for checked baggage, onboard meals, Wi‑Fi, and other optional services are also included where applicable in the flight cards.

Real-time pricing updates

Prices, availability, and travel details on this page have been updated within the last 24 hours, and for many routes are refreshed in real time. The more popular the route, the more accurate and up-to-date the data.

Change & Cancellation Policy

Trip.com shows the change and cancellation rules for each ticket during the booking process, including all related fees and conditions. Please refer to the following scenarios:
Voluntary cancellation/change:
To request a change or cancellation, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and flight segment, and submit your request. Please note that additional charges may apply based on the airline’s fare rules.
Cancellation/change due to a flight schedule change:
If your flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For full details of change and cancellation policies, please refer to the customer support pages.