Downtown San Francisco skyline with the Transamerica Pyramid. Flights from Seattle to San Francisco

Route guide

Cheap Flights from Seattle to San Francisco

Compare partner fares from Seattle to San Francisco, find your way around Sea-Tac's concourses, and connect to BART, Caltrain or SamTrans at SFO.

SEA to SFO · 679 mi · 2h 5m est.

SEA to SFO
679 miles
2h 5m nonstop (estimated)
5 airlines in our fare results

Photo: Frank Schulenburg, CC BY-SA 4.0, via Wikimedia Commons

Seattle to San Francisco flight insights

Average flight time

~2h 5m (estimated)

SEA → SFO

Cheapest cached price

$110

Checking live fares…

Last checked Nov 6, 2026

Planning a trip from Seattle to San Francisco? The average flight time on this route is ~2h 5m (estimated). The lowest fare we recorded on this route recently was $110 (last checked Nov 6, 2026); today's live fare for your dates can differ.

Seattle to San Francisco covers a straight-line distance of about 679 miles. Based on that distance, a nonstop flight would take approximately ~2h 5m (estimated). Actual flight time varies by airline, aircraft and routing.

Seattle to San Francisco at a glance

SEA to SFO is about 679 miles in a straight line. The curved line is an illustration; the route your airline flies may differ.

Route Quick Facts

Quick facts for flights from Seattle to San Francisco on Eazair
Origin	Seattle (SEA)
Destination	San Francisco (SFO)
Average Flight Time	~2h 5m (estimated)
Current Lowest Fare	$110
Fares Last Checked	Nov 6, 2026
Distance	679 miles (SEA to SFO)
Time in San Francisco	Same time as Seattle
Airlines in our fare results	5

Local time in San Francisco is the same as in Seattle. Seattle is on Pacific Time, San Francisco on Pacific Time.

Flight deals from Seattle to San Francisco

This route searches Seattle-Tacoma International (SEA) to San Francisco International (SFO). United, Delta and American have appeared in EazAir's fare checks for this route. Leaving Seattle, SEA's guide places Delta and United at the S and A gates. In San Francisco, airline terminal locations are not listed in this guide, so check your boarding pass or airline app. Oakland (OAK) and San Jose (SJC) are different airports from SFO.

Sea-Tac's N and S concourses connect to the main terminal only by the SEA Underground train, and SEA says one arrives every three minutes. The Blue Line serves S, B and A, while the Green Line serves N, C and D. SEA advises reaching the airport two hours before a domestic departure. It is working to restore live security wait times on the flySEA app and website, so read the signs in the terminal when choosing a checkpoint.

BART describes SFO as domestic Terminals 1, 2 and 3 plus the International Terminal, all linked by AirTrain to the BART station on Level 3 of the International Terminal. BART says trains from there take about 30 minutes to downtown San Francisco. For Caltrain, take the 4-minute BART ride to Millbrae and use the cross-platform connection. SamTrans routes 292, 397 and ECR OWL stop at the terminals and serve San Mateo County and San Francisco.

EazAir has two fare checks for SEA to SFO, the first on 28 Sep and the last on 5 Oct 2026. Each asked for the lowest one-way economy fare for one adult, departing 30 days later, and the highest result was at least one and a half times the lowest. Delta Main Basic and American Basic Economy include a carry-on, while United Basic Economy allows a personal item only on domestic flights. Search your own dates, and check the final price, bags and fare rules on the partner site before you pay.

Airports for Seattle to San Francisco flights

Departure · Seattle

Seattle-Tacoma International (SEA)

Pacific Time

Arrival · San Francisco

San Francisco International (SFO)

Pacific Time

Other airports near San Francisco Bay Area: Oakland International (OAK), Norman Y. Mineta San Jose International (SJC)

About San Francisco

Areas to know in San Francisco

Mission District
North Beach
Hayes Valley

Weather in San Francisco

A Mediterranean climate, though famously cool and foggy in summer due to marine influence.

Seattle to San Francisco: airport and fare guide

Checked on 17 Oct 2026 against the airport, airline and transit pages listed under Sources. Airports and airlines change these details, so confirm them with your airline before you fly.

Oakland (OAK) and San Jose (SJC) are separate airports in the same region. Check that your ticket says SFO.

Paine Field (PAE) in Everett, north of Seattle, is a separate airport with its own passenger terminal. Check that your ticket says SEA if you plan to use Sea-Tac.

Leaving from Seattle-Tacoma International (SEA)

Airline	SEA gates
Delta	S and A gates
United	S and A gates
Other airlines	Check your boarding pass or airline app.

Take the Link light rail 1 Line to SeaTac/Airport station. Sound Transit says the pedestrian bridge from the station is open 24 hours, and SEA runs a free Train-to-Plane shuttle from 5 a.m. to midnight.
SEA says app-based rideshares drop off at the terminal on the airport drives. If you are dropped on the baggage claim level, take the elevator or escalator up to ticketing.
SEA says Checkpoints 1, 2 and 3 are closest to the A and S gates, and lists Checkpoint 4 as open 24 hours. SEA says checkpoint hours may change.
SEA lists TSA PreCheck at Checkpoint 3 from 4 a.m. to 8 p.m. CLEAR is at Checkpoint 1, which SEA lists as open from 4 a.m. to 8 p.m.
SEA Spot Saver is a free security time reservation, offered at Checkpoint 4 from 4 a.m. to 10 p.m. SEA says you can book up to five days before your flight, for groups of up to 10.
SEA advises arriving two hours before a domestic departure and says over a third of daily passengers arrive before 9 a.m. SEA is working to restore live wait times on the flySEA app and website, so check the signs in the terminal.

Arriving at San Francisco International (SFO)

Airline terminal locations are not listed here. Check your boarding pass or airline app for your terminal.

BART describes SFO as having domestic Terminals 1, 2 and 3 plus the International Terminal.
The BART station is in the International Terminal on Level 3. BART says it is a short walk from Terminals 1 and 3.
AirTrain links all terminals with the BART station. BART says the domestic terminals are one to three minutes away on AirTrain.

Getting from SFO	Where to board	Where it goes
BART	SFO station, International Terminal, Level 3. From Terminals 1, 2 and 3, walk or take the AirTrain Red Line, BART says.	BART lists two lines here, Antioch to SFIA/Millbrae and Richmond to Millbrae/SFIA. About 30 minutes to downtown San Francisco, according to BART.
AirTrain	All terminals, BART says.	Terminals 1, 2 and 3 and the BART station in the International Terminal.
Caltrain via Millbrae	Take BART from the SFO station to Millbrae, a 4-minute ride, according to BART.	Caltrain, through the cross-platform connection BART lists at Millbrae.
SamTrans buses	Terminal 2 and Terminal 3 on the Arrivals/Baggage Claim Level, and the International Terminal on Level 1 at Courtyard A or curbside next to Courtyard G, SamTrans says.	Routes 292, 397 and late-night ECR OWL stop at the terminals and serve San Mateo County and San Francisco, according to SamTrans.

What the lowest fares include

Fare	Carry-on	Checked bag	Seat	Changes
Delta Main Basic	Delta says every passenger can bring one carry-on and one personal item free.	Delta charges for checked bags on domestic flights unless you qualify for a waiver, such as Medallion status or an eligible Delta SkyMiles American Express card.	Assigned after check-in. You may be able to buy a seat ahead of time for a fee.	Refunds are not allowed after the 24-hour risk-free cancellation window. Delta says a change or cancellation may be possible for a fee, with any value left as an eCredit.
American Basic Economy	Included, plus a personal item.	Not included, except for some AAdvantage status members and eligible cardmembers.	A free seat is assigned at check-in, or you can pay to choose one.	Generally not allowed. American describes a 24-hour window and some credit options on its Basic Economy page.
United Basic Economy	Not included on domestic flights. One personal item only, unless you are a MileagePlus Premier member, travel with one, or hold a qualifying MileagePlus card.	Not included; check United's bag fee calculator.	Assigned by United before boarding.	Changes may not be allowed. Refund if cancelled within 24 hours of booking, under United's 24-hour policy; after that, partial travel credit.

Based on the airlines' own pages, checked on 17 Oct 2026. Fees are left out because they change often. Check the final price, bags and fare rules on the partner site before you pay.

How EazAir measured fares on this route

EazAir's first 2 fare checks from Seattle to San Francisco ran from 28 Sep to 5 Oct 2026. For the return direction, San Francisco to Seattle, EazAir's first 6 checks ran from 16 Sep to 14 Oct 2026. Each check asked partner travel sites for the lowest one-way economy fare for one adult, departing 30 days after the check. Results can include connecting flights. The highest result was at least one and a half times the lowest. With only 2 checks, this cannot show a pattern. Search your own dates for current prices.

Sources

SEA: Security screening and checkpoints (no date shown, accessed 17 Oct 2026)
SEA: SEA Spot Saver (no date shown, accessed 17 Oct 2026)
SEA: Estimated checkpoint wait times (no date shown, accessed 17 Oct 2026)
SEA: All aboard the SEA Underground (September 2, 2025, accessed 17 Oct 2026)
SEA: Public transit, Link light rail (no date shown, accessed 17 Oct 2026)
SEA: App-based rideshare (no date shown, accessed 17 Oct 2026)
Sound Transit: SeaTac/Airport Station (no date shown, accessed 17 Oct 2026)
BART: San Francisco International Airport (SFO) station (no date shown, accessed 17 Oct 2026)
BART: Getting to SFO (no date shown, accessed 17 Oct 2026)
BART: Millbrae station (no date shown, accessed 17 Oct 2026)
SamTrans: Airport service (no date shown, accessed 17 Oct 2026)
Delta: Delta Main Basic (no date shown, accessed 17 Oct 2026)
Delta: Fares and discounts (no date shown, accessed 17 Oct 2026)
Delta: Carry-on baggage (no date shown, accessed 17 Oct 2026)
Delta: Bags (no date shown, accessed 17 Oct 2026)
American Airlines: Basic Economy (no date shown, accessed 17 Oct 2026)
United: Basic Economy FAQ (no date shown, accessed 17 Oct 2026)
EazAir fare checks for SEA to SFO, 28 Sep 2026 to 5 Oct 2026; SFO to SEA, 16 Sep 2026 to 14 Oct 2026

Frequently asked questions

How do I get to an S gate at Sea-Tac?

The S concourse is reached only on the SEA Underground train. SEA says the Blue Line links the S, B and A concourses, with a train every three minutes.

Is any Sea-Tac security checkpoint open all night?

SEA lists Checkpoint 4 as open 24 hours and says every checkpoint gives access to all gates. SEA also notes that checkpoint hours may change.

How do I get from SFO to downtown San Francisco?

Walk or take AirTrain to the BART station on Level 3 of the International Terminal. BART says trains from there take about 30 minutes to downtown San Francisco.

Where do SamTrans buses stop at SFO?

SamTrans says it stops at Terminal 2 and Terminal 3 on the Arrivals/Baggage Claim Level, and at the International Terminal on Level 1 at Courtyard A or curbside next to Courtyard G.

Do the lowest fares from Seattle to San Francisco include a carry-on?

Delta Main Basic and American Basic Economy include a carry-on and a personal item. United Basic Economy on domestic flights includes a personal item only, unless you are a MileagePlus Premier member or hold a qualifying card.

How far is Seattle from San Francisco?

SEA and SFO are about 679 miles apart in a straight line. Flight times vary by airline, direction and routing, so check the scheduled time shown with each result.

Airline bag fees

Baggage allowances differ significantly between fare classes (Basic/Light vs. Standard/Flex) and can change over time. Always verify the exact allowance for your specific fare with the airline before you fly.

Checked bag fees from each airline's own website
Airline	Carry-on, basic economy	1st checked bag	2nd checked bag	Source
American Airlines	Included	$45	$55	aa.com, Sep 24, 2026
United Airlines	Not included	$40	$50	united.com, Sep 24, 2026
Delta Air Lines	Included	$45	$55	delta.com, Sep 24, 2026
Southwest Airlines	Included	$45	$55	southwest.com, Oct 27, 2026
JetBlue	Included	$45	$59	jetblue.com, Sep 24, 2026
Alaska Airlines	Included	$45	$55	alaskaair.com, Sep 24, 2026
Frontier Airlines	Not included	Varies	Varies	flyfrontier.com, Sep 24, 2026
Sun Country Airlines	Not included	Varies	Varies	suncountry.com, Sep 24, 2026

Domestic US fees per bag, each way, when paid online in advance. "Varies" means the airline prices bags by route and date.

Travel tips

Arrive early for domestic flights

TSA generally recommends arriving at least 2 hours before a domestic departure, more at larger hub airports during peak travel periods.

Pack a mixed carry-on

Keep a change of clothes, chargers, and any essentials in your carry-on rather than only your checked bag, in case of a delay or a bag that doesn't arrive with you.

Screenshot your confirmation

Save a screenshot or PDF of your booking confirmation and boarding pass before you travel, in case you lose signal or battery at the airport.

Check in online when it opens

Most airlines open online check-in 24 hours before departure. Checking in early can help with seat selection and, on some airlines, boarding group assignment.