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Flights from San Francisco to Seattle

Hi, I've summed up all the key info for San Francisco to Seattle flights

Cheapest one-way

$ 39
Alaska Airlines Tue, Oct 27

74% below next 30d avg. ($150)

Cheapest round-trip

$ 88
Alaska Airlines Fri, Oct 30

65% below next 30d avg. ($248)

Fastest flight

2h 11m4m faster than avg. (2h 15m)

Recommended airlines

When to travel

NovemberCheapest month
JulyPeak month

With a lowest one-way fare of $39 , travelers can expect an average price of $150 for upcoming trips, while round-trip tickets start at $88 . Flights typically take around 2h 15m , but the fastest nonstop option completes the journey in just 2h 11m minutes. There are 120 flights weekly on this route. You can arrive at any of the following airports in Seattle: Seattle-Tacoma International Airport (SEA) , King County (Boeing Field) International Airport (BFI) , and Kenmore Air Harbor Seaplane Base (LKE) . Flights from San Francisco International Airport to Seattle-Tacoma International Airport (SFO-SEA) are by far the most popular option for this route. To secure the best rates, booking 40 days in advance is recommended, and the cheapest travel days are Tuesday, Wednesday, and Saturday .

Updated 8h ago · This content is an AI-powered summary based on Trip.com data. Prices and availability are subject to change. Please refer to actual prices, availability, and travel conditions.

Explore the cheapest one-way and round-trip flights from San Francisco to Seattle over the next 90 days, with one-way fares from $39 and round-trip from $88. Based on Trip.com's latest 7-day flight data.

      • Cheapest nonstop
        SFO 6:07 AM
        2h 13m
        Nonstop
        SEA 8:20 AM
        San Francisco - Seattle | Fri, Oct 30 | Alaska Airlines
        SEA 7:18 AM
        2h 23m
        Nonstop
        SFO 9:41 AM
        Seattle - San Francisco | Sun, Nov 1 | Alaska Airlines
        $88 $103
        15% off
        15% off
        $103 $88
      • SFO 6:07 AM
        2h 13m
        Nonstop
        SEA 8:20 AM
        San Francisco - Seattle | Sun, Oct 11 | Alaska Airlines
        SEA 5:59 PM
        2h 18m
        Nonstop
        SFO 8:17 PM
        Seattle - San Francisco | Tue, Oct 13 | Alaska Airlines
        $88 $103
        15% off
        15% off
        $103 $88
      • SFO 8:58 PM
        2h 15m
        Nonstop
        SEA 11:13 PM
        San Francisco - Seattle | Fri, Nov 13 | Alaska Airlines
        SEA 7:18 AM
        2h 23m
        Nonstop
        SFO 9:41 AM
        Seattle - San Francisco | Sun, Nov 15 | Alaska Airlines
        $88 $103
        15% off
        15% off
        $103 $88
      • SFO 6:20 AM
        2h 21m
        Nonstop
        SEA 8:41 AM
        San Francisco - Seattle | Fri, Oct 30 | Delta Air Lines
        SEA 7:18 AM
        2h 23m
        Nonstop
        SFO 9:41 AM
        Seattle - San Francisco | Sun, Nov 1 | Alaska Airlines
        $91
        12% off
        $103 $91
      • SFO 6:20 AM
        2h 21m
        Nonstop
        SEA 8:41 AM
        San Francisco - Seattle | Sun, Oct 11 | Delta Air Lines
        SEA 9:59 AM
        2h 27m
        Nonstop
        SFO 12:26 PM
        Seattle - San Francisco | Tue, Oct 13 | Alaska Airlines
        $92
        11% off
        $103 $92
      • SFO 10:39 AM
        2h 17m
        Nonstop
        SEA 12:56 PM
        San Francisco - Seattle | Mon, Nov 9 | Alaska Airlines
        SEA 9:20 PM
        2h 11m
        Nonstop
        SFO 11:31 PM
        Seattle - San Francisco | Wed, Nov 11 | Delta Air Lines
        $92
        11% off
        $103 $92
      • SFO 6:20 AM
        2h 21m
        Nonstop
        SEA 8:41 AM
        San Francisco - Seattle | Fri, Nov 6 | Delta Air Lines
        SEA 7:18 AM
        2h 23m
        Nonstop
        SFO 9:41 AM
        Seattle - San Francisco | Sun, Nov 8 | Alaska Airlines
        $92
        11% off
        $103 $92
      • SFO 6:17 AM
        2h 18m
        Nonstop
        SEA 8:35 AM
        San Francisco - Seattle | Fri, Nov 13 | Delta Air Lines
        SEA 7:18 AM
        2h 23m
        Nonstop
        SFO 9:41 AM
        Seattle - San Francisco | Sun, Nov 15 | Alaska Airlines
        $92
        11% off
        $103 $92
      • SFO 6:20 AM
        2h 21m
        Nonstop
        SEA 8:41 AM
        San Francisco - Seattle | Thu, Oct 8 | Delta Air Lines
        SEA 7:16 AM
        2h 22m
        Nonstop
        SFO 9:38 AM
        Seattle - San Francisco | Sat, Oct 10 | Delta Air Lines
        $92
        11% off
        $103 $92
      • SFO 6:17 AM
        2h 18m
        Nonstop
        SEA 8:35 AM
        San Francisco - Seattle | Mon, Nov 9 | Delta Air Lines
        SEA 9:20 PM
        2h 11m
        Nonstop
        SFO 11:31 PM
        Seattle - San Francisco | Wed, Nov 11 | Delta Air Lines
        $93
        10% off
        $103 $93
      • SFO 1:00 PM
        17h 25m
        1 stop
        SEA 2:00 PM
        San Francisco - Seattle | Thu, Sep 17 | Normal Airline
        SEA 3:00 PM
        6h
        Nonstop
        SFO 4:00 PM
        Seattle - San Francisco | Sat, Sep 19 | Normal Airline
        Find more flights
        Find more flights
      • Cheapest nonstop
        SFO 5:45 PM
        2h 11m
        Nonstop
        SEA 7:56 PM
        San Francisco - Seattle | Tue, Oct 27 | Alaska Airlines
        $39 $52
        25% off
        25% off
        $52 $39
      • SFO 6:20 AM
        2h 21m
        Nonstop
        SEA 8:41 AM
        San Francisco - Seattle | Tue, Oct 27 | Delta Air Lines
        $39 $52
        25% off
        25% off
        $52 $39
      • SFO 6:20 AM
        2h 21m
        Nonstop
        SEA 8:41 AM
        San Francisco - Seattle | Fri, Oct 16 | Delta Air Lines
        $45 $52
        13% off
        13% off
        $52 $45
      • SFO 8:33 AM
        2h 19m
        Nonstop
        SEA 10:52 AM
        San Francisco - Seattle | Sun, Nov 8 | Alaska Airlines
        $45
        13% off
        $52 $45
      • SFO 10:39 AM
        2h 17m
        Nonstop
        SEA 12:56 PM
        San Francisco - Seattle | Thu, Nov 5 | Alaska Airlines
        $45
        13% off
        $52 $45
      • SFO 8:58 PM
        2h 15m
        Nonstop
        SEA 11:13 PM
        San Francisco - Seattle | Fri, Nov 13 | Alaska Airlines
        $45
        13% off
        $52 $45
      • SFO 5:45 PM
        2h 11m
        Nonstop
        SEA 7:56 PM
        San Francisco - Seattle | Mon, Oct 19 | Alaska Airlines
        $46
        12% off
        $52 $46
      • SFO 6:17 AM
        2h 18m
        Nonstop
        SEA 8:35 AM
        San Francisco - Seattle | Fri, Nov 13 | Delta Air Lines
        $46
        12% off
        $52 $46
      • SFO 6:20 AM
        2h 21m
        Nonstop
        SEA 8:41 AM
        San Francisco - Seattle | Thu, Oct 8 | Delta Air Lines
        $46
        12% off
        $52 $46
      • SFO 6:20 AM
        2h 21m
        Nonstop
        SEA 8:41 AM
        San Francisco - Seattle | Fri, Oct 30 | Delta Air Lines
        $47
        10% off
        $52 $47
      • SFO 1:00 PM
        17h 25m
        1 stop
        SEA 2:00 PM
        San Francisco - Seattle | Thu, Sep 17 | Normal Airline
        Find more flights
        Find more flights

Flight.News
Flights from San Francisco to Seattle operate an average of 89 times per day over the past 7 days, with a 21.4% on-time departure rate and a 86.6% on-time arrival rate.

Which airlines are the most popular for San Francisco to Seattle flights?

The most popular airlines flying from San Francisco to Seattle are Alaska Airlines, United Airlines, and Delta Air Lines, among 5 carriers on this route. Alaska Airlines offers the lowest fares. Based on Trip.com's flight booking data from the previous 12 months.
Alaska Airlines logo Alaska Airlines
United Airlines logo United Airlines
Delta Air Lines logo Delta Air Lines
American Airlines logo American Airlines
Frontier Airlines logo Frontier Airlines
Airlines are determined based on actual purchased flight tickets from San Francisco to Seattle according to previous 12 months data from Trip.com.

Trip.com price insights on flights from San Francisco to Seattle

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

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

Based on Trip.com’s data, the cheapest month for flights from San Francisco to Seattle is September, with an average price of $142; while the month with the highest flight price is usually June, with an average price of up to $232.

$232
$187
$142
$97
  • $142
    Sep
  • $149
    Oct
  • $173
    Nov
  • $181
    Dec
  • $154
    Jan
  • $174
    Feb
  • $211
    Mar
  • $182
    Apr
  • $224
    May
  • $232
    Jun
  • $206
    Jul
  • $195
    Aug

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

Average price of round-trip flights from San Francisco 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 Francisco to Seattle are found during January, with an average price of $206. Conversely, the highest prices are found during June, with an average price of up to $431.

$431
$319
$206
$94
    Cheapest
  • $301
    Sep
  • $304
    Oct
  • $376
    Nov
  • $272
    Dec
  • $206
    Jan
  • $242
    Feb
  • $311
    Mar
  • $292
    Apr
  • $386
    May
  • $431
    Jun
  • $390
    Jul
  • $317
    Aug

When is the cheapest day to fly from San Francisco to Seattle during Columbus Day?

Data is based on the lowest one-way price from San Francisco to Seattle during Columbus Day on Trip.com in the past 3 days.

Columbus Day is scheduled for Oct 12. The cheapest flights from San Francisco to Seattle are available on Oct 9, with fares starting at $47.

$107
$77
$47
$17
  • $107
    8
    Oct
  • $47
    9
  • $104
    10
  • $78
    11
  • $88
    12
  • $88
    13
  • $85
    14

Frequently Asked Questions

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

    Based on Trip.com data, Alaska Airlines offers one-way fares as low as $39 on Cheapest nonstop routes (e.g. SFO to SEA on Tue, Oct 27), while Alaska Airlines offers Cheapest nonstop round-trips from $88 departing on Fri, Oct 30 and returning on Sun, Nov 1.
  • At the moment, you can catch a nonstop flight from San Francisco to Seattle with the following airlines, including: Alaska Airlines United Airlines Delta Air Lines American Airlines Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.
  • It takes around 2 hours 15 minutes to fly from San Francisco (SFO) 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 Francisco 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 120 flight per week flying from San Francisco to Seattle. You can check the weekly schedule for popular airlines on this route below: Alaska Airlines: S/M/T/W/T/F/S -- AS580 (06:06) Delta Air Lines: S/M/T/W/T/F/S -- DL2721 (06:27)
  • To find best deals on flights from San Francisco 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 Tue, Oct 27, with one-way flights priced at just $39.
    · 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 Seattle travel is around July.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from San Francisco to Seattle is November, when demand for travel is lower.
  • After crunching the numbers on our September flight calendar, it's currently cheapest to fly from San Francisco to Seattle on September 22, 2026 with Alaska Airlines, with prices starting at $53.
  • You can arrive at any of the following airports in Seattle: Seattle-Tacoma International Airport (SEA), King County (Boeing Field) International Airport (BFI), and Kenmore Air Harbor Seaplane Base (LKE). Flights from San Francisco International Airport to Seattle-Tacoma International Airport (SFO-SEA) are by far the most popular option for this route.
  • The time difference between Seattle and San Francisco is 0m.
  • 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.
  • Based on Trip.com data for flights departing in the next 30 days, the average one-way fare from San Francisco to Seattle is $150. Fares vary by travel date, airline and availability.
  • Based on Trip.com data for travel in the next 30 days, the average round-trip fare from San Francisco to Seattle is $248. The final price depends on the outbound and return dates, airline and fare conditions.
  • Enter San Francisco and Seattle, choose your travel dates and passengers, then compare flights by price, duration and baggage. Select a fare, review the change and cancellation rules, enter traveler details and complete payment to receive your confirmation.
  • Frontier Airlinesare the most popular budget airlines flying from San Francisco to Seattle. Check baggage, seat and payment fees before comparing the final price.

Flying from San Francisco to Seattle: What You Need to Know

The flight from San Francisco to Seattle takes about 2 hours nonstop—no time difference, as both cities are in the Pacific Time Zone.

Tip: SFO is busy + foggy—arrive 2 hours early. OAK/SJC are smoother—1.5 hours early works.

Airports in San Francisco

For Seattle flights, you’ll usually fly from:
San Francisco International (SFO) – Main hub (most flights).
Oakland International (OAK) – Budget option (across the bay).

San Francisco Airport (SFO)

Where: 13 miles south of downtown SF.
Terminals: 4 terminals (1, 2, 3, International). All connected post-security via AirTrain or walkways.
For Seattle flights: Mostly Terminal 2 (Alaska, Delta) or Terminal 3 (United).
Key tip: Allow extra time – summer fog causes delays. Security waits: 15–30+ mins.

Getting to SFO from downtown:
  • BART Train: Easiest/cheapest ($10.20–$11.20 USD, 30 mins from downtown). Runs 5 AM–midnight.
  • Rideshare (Uber/Lyft): $35–$55 USD (25–50 mins, traffic-heavy). Pickup on Departures Level.
  • Taxi: Flat rate $55–$65 USD to downtown.

Oakland Airport (OAK)

Where: 10 miles south of downtown Oakland (20 miles from SF).
Terminals: 2 terminals (1 + 2), connected via walkway.
For Seattle flights: Mostly Terminal 2 (Southwest, Spirit).
Key perk: Faster security (often <15 mins), cheaper parking.

Getting to OAK from SF:
  • BART + Airport Connector: Take BART to Coliseum Station → free shuttle to OAK ($10.95 USD total, 45 mins).
  • Rideshare: $50–$70+ USD from SF (bridge tolls add $7).
  • Taxi: $80–$100+ USD (not worth it).

Airports in Seattle

Seattle has one main airport:
Seattle-Tacoma International (SEA) – Handles all major flights.

Seattle Airport (SEA)

Where: 14 miles south of downtown Seattle.
Terminals: One main terminal split into North + South Satellites, connected by underground train.
For SF flights: Mostly Concourse C (Alaska) or Concourse A (Delta, United).
Key tip: Famous for long TSA lines – arrive 2+ hours early for domestic flights.

Getting to downtown Seattle:
  • LINK Light Rail: Best deal ($3.25 USD, 35 mins to downtown). Runs 5 AM–1 AM.
  • Rideshare (Uber/Lyft): $35–$55 USD (30–60 mins, I-5 traffic sucks).
  • Taxi: Flat rate $50 USD to downtown.
  • Shuttles: Shared vans ~$25 USD (slower, books ahead).

Best Time to Fly to Seattle

Good months to fly to Seattle are May-June or Sept-Oct. Mild weather (12-22°C / 55-72°F), less rain than winter, smaller crowds, and better prices on flights/hotels.
Summer (July-Aug) is peak season. Dry and warm (18-28°C / 65-82°F), long daylight hours, major festivals (Bumbershoot, Seafair). Expect crowds and highest prices. Book flights/hotels 3-5 months ahead. Wildfire smoke can occur.
Winter (Nov-Feb) is cool, wet, and gray (3-8°C / 37-46°F). Rain is frequent, daylight is short. Flights/hotels are cheapest except Thanksgiving/Christmas weeks. Rare snow can disrupt travel.
Cheapest Time to Fly: Fly Tue/Wed. Book flights 2-4 months out. Seattle-Tacoma (SEA) is the main airport—Link Light Rail connects to downtown in 35 mins.

Where to Stay in Seattle

Book Seattle hotels on Trip.com! Free cancellation helps with weather changes.

  • Downtown: Best for first-timers. Walk to Pike Place Market, waterfront, Seattle Art Museum. Major hotels (luxury to mid-range). Easy light rail/bus access. Can feel sterile at night.
  • Belltown: Trendy area near downtown. Bars, restaurants, nightlife, short walk to Space Needle. Boutique hotels and apartments. Lively evenings, can be noisy.
  • Fremont: Quirky, local feel ("Center of the Universe"). Near Gas Works Park, Fremont Troll. Budget-friendly B&Bs/vacation rentals. 20-min bus ride to downtown. Great for families.

Explore More Popular Flights

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

Book with no extra fees

Prices displayed in this page are all-inclusive prices (incl. taxes, fuel surcharge, civil aviation development fund, etc) with all fees confirmed before payment. Fees for luggage, meals, WLAN, or other additional services are also included as shown in the flight cards.

Real-time pricing updates

Prices, availability, and travel information on this page were updated within last 24 hours—even in real-time. The more popular the route, the more precise the data.

Change & Cancellation Policy

Trip.com displays flight cancellation and change policies for each flight ticket during the booking process, including fees and applicable conditions. Please check the following scenarios:
Voluntary cancellation/change:
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.
Cancellation/change due to a flight schedule change:
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.