$79+ Cheap flights from San Francisco to Seattle (SFO - SEA)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/28. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — SEA
Oct 6 — Oct 131
Round-trip
1 adult, Economy
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Find cheap flights from San Francisco to Seattle with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from San Francisco to Seattle/Tacoma Intl are usually found in February or October, booked 51 days in advance, depart on a Thursday or Friday and return on a Friday
Cheap flight deals from San Francisco to Seattle
Cheapest
Best
Last-minute
One-way
Cheapest flights from San Francisco to SeattleExplore the most affordable flight options available from San Francisco to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 6, 2026.
Explore the most affordable flight options available from San Francisco to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 6, 2026.
This Expedia deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/266:21 pm -
Nonstop2h 11m
Tue 9/298:15 pm -
1 stop14h 07m
Deal found 9/2![Multiple Airlines logo]()
$150
This Southwest deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/151:45 pm -
1 stop7h 15m
Sat 10/175:25 am -
1 stop6h 50m
Deal found 9/6![Southwest logo]()
$151
This Delta deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/96:20 am -
Nonstop2h 21m
Sat 10/177:16 am -
Nonstop2h 22m
Deal found 9/6![Delta logo]()
$152
This Kissandfly.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/19:07 pm -
Nonstop2h 19m
Sun 10/46:39 am -
Nonstop2h 10m
Deal found 9/6![Multiple Airlines logo]()
$153
This Delta deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/28:59 pm -
Nonstop2h 15m
Sat 10/109:35 pm -
Nonstop2h 21m
Deal found 9/3![Delta logo]()
$154
This Expedia deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/210:24 pm -
1 stop11h 18m
Tue 10/611:54 am -
Nonstop2h 29m
Deal found 9/6![Multiple Airlines logo]()
$155
This Southwest deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/156:45 am -
1 stop9h 45m
Thu 10/156:50 pm -
1 stop5h 50m
Deal found 9/6![Southwest logo]()
$156
This Delta deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/1510:35 am -
Nonstop2h 22m
Mon 10/199:35 pm -
Nonstop2h 21m
Deal found 9/2![Delta logo]()
$157
This Expedia deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/156:07 am -
Nonstop2h 13m
Mon 10/194:27 pm -
1 stop7h 48m
Deal found 9/2![Multiple Airlines logo]()
$158
This Frontier deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/176:00 am -
1 stop9h 12m
Sat 10/244:27 pm -
1 stop7h 48m
Deal found 9/2![Frontier logo]()
$159
This Alaska Airlines deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/18:23 am -
1 stop10h 28m
Sat 10/106:39 am -
Nonstop2h 10m
Deal found 9/5![Alaska Airlines logo]()
$160
This Southwest deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/1412:15 pm -
2 stops9h 30m
Sat 10/179:45 am -
2 stops8h 00m
Deal found 9/6![Southwest logo]()
$161
Best flights from San Francisco to SeattleDiscover carefully curated flight deals from San Francisco to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 6, 2026.
Discover carefully curated flight deals from San Francisco to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 6, 2026.
This Southwest deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/205:20 am -
1 stop6h 05m
Tue 10/273:30 pm -
1 stop6h 50m
Deal found 9/5![Southwest logo]()
$151
This Delta deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/46:23 am -
Nonstop2h 17m
Sun 10/117:16 am -
Nonstop2h 22m
Deal found 9/6![Delta logo]()
$152
This United Airlines deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/64:25 pm -
Nonstop2h 19m
Fri 10/97:11 am -
Nonstop2h 19m
Deal found 9/6![United Airlines logo]()
$156
This Alaska Airlines deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/77:03 am -
1 stop7h 14m
Thu 10/159:36 pm -
Nonstop2h 16m
Deal found 9/6![Alaska Airlines logo]()
$157
This Southwest deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/226:10 am -
2 stops9h 10m
Mon 10/265:30 am -
2 stops7h 35m
Deal found 9/5![Southwest logo]()
$161
This Delta deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/16:00 am -
Nonstop2h 23m
Wed 1/63:30 pm -
Nonstop2h 22m
Deal found 9/2![Delta logo]()
$174
This Alaska Airlines deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/167:11 pm -
Nonstop2h 14m
Wed 10/218:36 pm -
Nonstop2h 13m
Deal found 9/3![Alaska Airlines logo]()
$174
This Southwest deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/252:00 pm -
1 stop5h 35m
Mon 10/56:50 pm -
1 stop5h 50m
Deal found 9/4![Southwest logo]()
$181
This Delta deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/266:23 am -
Nonstop2h 17m
Sun 9/279:30 pm -
Nonstop2h 21m
Deal found 9/3![Delta logo]()
$227
This Alaska Airlines deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/77:42 am -
1 stop5h 15m
Sat 11/73:48 pm -
Nonstop2h 13m
Deal found 9/3![Alaska Airlines logo]()
$231
This Delta deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/246:23 am -
Nonstop2h 17m
Sun 9/277:15 am -
Nonstop2h 19m
Deal found 9/3![Delta logo]()
$227
This Alaska Airlines deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/286:00 am -
Nonstop2h 08m
Mon 9/288:30 pm -
Nonstop2h 15m
Deal found 9/4![Alaska Airlines logo]()
$237
Last-minute flights from San Francisco to SeattleDiscover last-minute flight deals from San Francisco to Seattle. Data last updated September 6, 2026 and is based on user searches.
Discover last-minute flight deals from San Francisco to Seattle. Data last updated September 6, 2026 and is based on user searches.
This Expedia deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/242:28 pm -
1 stop19h 14m
Mon 9/289:45 pm -
1 stop10h 29m
Deal found 9/1![Frontier logo]()
$158
This Expedia deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/266:21 pm -
Nonstop2h 11m
Tue 9/298:15 pm -
1 stop14h 07m
Deal found 9/2![Multiple Airlines logo]()
$150
This Alaska Airlines deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/264:51 pm -
Nonstop2h 16m
Wed 9/301:41 pm -
Nonstop2h 15m
Deal found 9/5![Alaska Airlines logo]()
$161
This Kissandfly.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/19:07 pm -
Nonstop2h 19m
Sun 10/46:39 am -
Nonstop2h 10m
Deal found 9/6![Multiple Airlines logo]()
$153
This Southwest deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/112:05 pm -
1 stop9h 00m
Sat 10/37:50 am -
1 stop6h 45m
Deal found 9/5![Southwest logo]()
$156
This Delta deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/28:59 pm -
Nonstop2h 15m
Tue 10/610:51 am -
Nonstop2h 17m
Deal found 9/3![Delta logo]()
$154
This Alaska Airlines deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/31:51 pm -
Nonstop2h 13m
Sat 10/37:36 pm -
Nonstop2h 13m
Deal found 9/2![Alaska Airlines logo]()
$152
This Alaska Airlines deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/39:43 am -
Nonstop2h 12m
Sat 10/107:20 am -
1 stop5h 28m
Deal found 9/5![Alaska Airlines logo]()
$160
This Southwest deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/151:45 pm -
1 stop7h 15m
Sat 10/175:25 am -
1 stop6h 50m
Deal found 9/6![Southwest logo]()
$151
This Delta deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/1510:35 am -
Nonstop2h 22m
Mon 10/199:35 pm -
Nonstop2h 21m
Deal found 9/2![Delta logo]()
$157
This Frontier deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/176:00 am -
1 stop9h 12m
Sat 10/244:27 pm -
1 stop7h 48m
Deal found 9/2![Frontier logo]()
$159
This Orbitz deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/236:07 am -
Nonstop2h 13m
Sun 10/259:16 pm -
1 stop10h 57m
Deal found 9/5![Multiple Airlines logo]()
$155
One-way flights from San Francisco to SeattleSearch for one-way flight options from San Francisco to Seattle. Find affordable one-way fares based on user searches. Data last updated September 6, 2026.
Search for one-way flight options from San Francisco to Seattle. Find affordable one-way fares based on user searches. Data last updated September 6, 2026.
This Delta deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/246:23 am -
Nonstop2h 17m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Delta logo]()
$79
This American Airlines deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/157:15 am -
1 stop5h 52m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![American Airlines logo]()
$80
This Southwest deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/56:10 am -
2 stops9h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Southwest logo]()
$81
This Super.com deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/110:24 pm -
1 stop11h 18m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Frontier logo]()
$83
This Super.com deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/242:28 pm -
1 stop19h 14m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Frontier logo]()
$84
This Southwest deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/710:20 am -
2 stops11h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Southwest logo]()
$87
This Kiwi.com deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/158:58 am -
2 stops24h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Frontier logo]()
$88
This Southwest deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/242:00 pm -
1 stop5h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Southwest logo]()
$89
This Super.com deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/26:02 pm -
1 stop26h 28m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Frontier logo]()
$90
This Super.com deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/167:13 pm -
1 stop19h 59m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Frontier logo]()
$91
Find flight deals from San Francisco to Seattle
Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) 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 September 6, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $150 (Expedia) |
One-way from | $79 (Delta) |
Popular in | July |
Cheapest in | February |
Average price | $287 |
Good round-trip deal | $229 or less |
Good one-way deal | $145 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from San Francisco 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 7,457,451 searches. Data last updated September 6, 2026.
Use the filters below to find and compare flights from San Francisco to Seattle that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
San FranciscoSeattle
SFO San Francisco - SEA Seattle/Tacoma Intl
SFOSEA
San Francisco
Wed 10/28
3:21 pm-5:33 pm
Nonstop2h 12m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$79
San FranciscoSeattle
SFO San Francisco - SEA Seattle/Tacoma Intl
SFOSEA
San Francisco
Tue 10/13
12:15 pm-9:45 pm
2 stops9h 30m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$81
San FranciscoSeattle
SFO San Francisco - SEA Seattle/Tacoma Intl
SFOSEA
San Francisco
Sat 9/26
6:10 am-2:20 pm
1 stop8h 10m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$89
San FranciscoSeattle
SFO San Francisco - SEA Seattle/Tacoma Intl
SFOSEA
San Francisco
Wed 9/30
9:35 am-8:20 pm
2 stops10h 45m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$94
San FranciscoSeattle
SFO San Francisco - SEA Seattle/Tacoma Intl
SFOSEA
San Francisco
Mon 11/16
12:25 pm-9:30 pm
2 stops9h 05m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$94
San FranciscoSeattle
SFO San Francisco - SEA Seattle/Tacoma Intl
SFOSEA
San Francisco
Tue 10/20
6:45 am-1:35 pm
2 stops6h 50m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$94
San FranciscoSeattle
SFO San Francisco - SEA Seattle/Tacoma Intl
SFOSEA
San Francisco
Wed 9/23
12:05 pm-9:45 pm
2 stops9h 40m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$94
San FranciscoSeattle
SFO San Francisco - SEA Seattle/Tacoma Intl
SFOSEA
San Francisco
Thu 10/8
10:45 pm-1:15 am
Nonstop2h 30m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$109
San FranciscoSeattle
SFO San Francisco - SEA Seattle/Tacoma Intl
SFOSEA
San Francisco
Fri 9/25
8:53 pm-11:10 pm
Nonstop2h 17m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$114
Quickest round-trip
San FranciscoSeattle
SFO San Francisco - SEA Seattle/Tacoma Intl
SFOSEA
San Francisco
Thu 9/24
6:00 am-8:08 am
Nonstop2h 08m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$119
Showing 1-10 of 23 resultsSorted by cheapest first
Compare providers for flights from San Francisco to Seattle
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Francisco to Seattle in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*1 star | |
| Price Accuracy- | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
- Most accurate provider: When it comes to deals on San Francisco-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Francisco-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Francisco-Seattle flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on San Francisco-Seattle flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Francisco-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from San Francisco to Seattle
Have a flexible travel schedule? Discover the best time to fly to Seattle from San Francisco with our price prediction graph.
SFO-SEA
Estimated round-trip 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 Francisco to Seattle
Prices
Airlines
Delays
How far ahead should I book a flight from San Francisco to Seattle?
The best time to book flights from San Francisco to Seattle is 50 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from San Francisco to Seattle?
Currently, February is the cheapest month in which you can book a flight from San Francisco to Seattle (average of $210). Flying from San Francisco to Seattle in July is currently the most expensive (average of $346). 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 SFO to SEA?
Find hourly flight availability from San Francisco 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 September 6, 2026.
A simple way to save on the total cost of your ticket is to fly from San Francisco to Seattle in the evening. If you’re flexible enough to do this you can expect to save up to 23% on your trip compared to booking a flight at noon.
What is the cheapest day to fly from San Francisco to Seattle?
Use this chart to determine the cheapest time to fly round-trip from San Francisco to Seattle. Price data was last updated on September 5, 2026.
Travelers seeking maximum savings on their San Francisco to Seattle flight should consider departing on Thursday evenings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
How often are flights from San Francisco to Seattle delayed?
About 18% of weekly flights between San Francisco and Seattle have experienced delays in the past year, with the average delay time being 134 minutes.
What is the most punctual flight time for San Francisco to Seattle flights?
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Saturday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on San Francisco to Seattle flights?
Over the last year, United Airlines have had the lowest number of delays on this route, with just 16% of flights being delayed.
The best insider tips for San Francisco to Seattle flights
AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your San Francisco to Seattle trip
Our travel experts
Reviews of airlines servicing Seattle
Get insights into the airlines that provide service to Seattle. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Seattle. Reviews last updated September 6, 2026.
Read through reviews of airlines operating flights from San Francisco to Seattle, such as Alaska Airlines,Delta, andHawaiian Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.8
Boarding
8.1
Food
7.0
Crew
8.5
Overall
7.9
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Dec 2025
SJC - SEA
Comfort
7.8
Boarding
8.1
Food
7.0
Crew
8.5
Overall
7.9
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Dec 2025
SJC - SEA
Comfort
7.8
Boarding
8.1
Food
7.0
Crew
8.5
Overall
7.9
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Dec 2025
SJC - SEA
Comfort
7.8
Boarding
8.1
Food
7.0
Crew
8.5
Overall
7.9
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Dec 2025
SJC - SEA
Comfort
7.8
Boarding
8.1
Food
7.0
Crew
8.5
Overall
7.9
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Dec 2025
SJC - SEA
Comfort
7.8
Boarding
8.1
Food
7.0
Crew
8.5
Overall
7.9
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Dec 2025
SJC - SEA
Related info for your journey
Find useful and relevant information for your journey from San Francisco to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Seattle?
Book flights to Seattle if you plan to visit one of these locationsSeaTac
Renton
Tacoma
Lacey
Leavenworth
Olympia
Tukwila
Edmonds
Snoqualmie
Puyallup
Lynnwood
Centralia
Kent
Tumwater
Ellensburg
Issaquah
Marysville
Ocean Shores
Lakewood
Fife
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San Francisco and Seattle flights
Browse other San Francisco and Seattle flight options. Last updated on September 6, 2026.
Other flights from San Francisco
Browse through other flights departing from San Francisco. Flights are based on user searches made on Cheapflights and were last updated on September 6, 2026.
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Explore flights to Seattle departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 6, 2026.
Top 6 airlines flying from San Francisco to Seattle
Discover the top 6 airlines that operate flights from San Francisco to Seattle. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 6, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$85 | Average$231 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$99 | Average$277 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$118 | Average$310 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$123 | Average$305 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$125 | Average$319 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$287 | Average$467 | FlexibilityNo cancel fee | On-time71% |