Seattle skyline with the Space Needle and Mount Rainier, seen from Queen Anne Hill. Flights from San Francisco to Seattle

Route guide

Cheap Flights from San Francisco to Seattle

Compare partner fares from San Francisco to Seattle, plan your BART or SamTrans ride to SFO, and get from your Sea-Tac gate into the city.

SFO to SEA · 679 mi · 2h 5m est.

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

Photo: Daniel Schwen, CC BY-SA 4.0, via Wikimedia Commons

San Francisco to Seattle flight insights

Average flight time

~2h 5m (estimated)

SFO → SEA

Cheapest cached price

$67

Checking live fares…

Prices shown may not be current. Last checked: Oct 27, 2026.

Planning a trip from San Francisco to Seattle? The average flight time on this route is ~2h 5m (estimated). The lowest fare we recorded on this route recently was $67 (last checked Oct 27, 2026); today's live fare for your dates can differ.

San Francisco to Seattle 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.

San Francisco to Seattle at a glance

SFO to SEA 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 San Francisco to Seattle on Eazair
Origin	San Francisco (SFO)
Destination	Seattle (SEA)
Average Flight Time	~2h 5m (estimated)
Current Lowest Fare	$67
Fares Last Checked	Oct 27, 2026
Distance	679 miles (SFO to SEA)
Time in Seattle	Same time as San Francisco
Airlines in our fare results	4

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

Flight deals from San Francisco to Seattle

Flights on this page leave San Francisco International (SFO) for Seattle-Tacoma International (SEA). Oakland (OAK) and San Jose (SJC) are separate airports in the same region, and Paine Field (PAE) in Everett is separate from Sea-Tac, so check the codes on your ticket. United, American, Frontier and Delta have appeared in EazAir's fare checks for this route. SEA's guide says Delta and United use its S and A gates.

Two BART lines serve the SFO station: Antioch to SFIA/Millbrae and Richmond to Millbrae/SFIA. From the station, BART says Terminals 1, 2 and 3 are one to three minutes away on AirTrain, and the International Terminal check-in counters are a short walk from the main entrance. By bus, SamTrans stops at Terminal 2 on the Arrivals/Baggage Claim Level, at the center island next to Courtyard 2. This guide could not confirm where SFO's checkpoints, PreCheck and CLEAR lanes are.

The Link light rail 1 Line runs from SeaTac/Airport station to downtown Seattle, on a line between Federal Way and Lynnwood, and SEA puts the ride from downtown at 38 minutes. A free Train-to-Plane shuttle connects the terminal and the station from 5 a.m. to midnight, seven days a week. Taxis use the 3rd floor of the parking garage: metered cabs show three-digit numbers and one color, and flat-rate cabs, which charge by zip code, have four-digit numbers and two colors.

From 16 Sep to 14 Oct 2026, EazAir ran its first 6 fare checks for SFO to SEA, each for the lowest one-way economy fare for one adult, departing 30 days later. The 6 checks returned 5 different results, the highest was at least double the lowest, and the lowest came on 6 Oct. Delta and American include a carry-on with their lowest fares, while United and Frontier allow a personal item only. Search your own dates, and check the final price, bags and fare rules on the partner site before you pay.

Airports for San Francisco to Seattle flights

Departure · 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)

Arrival · Seattle

Seattle-Tacoma International (SEA)

Pacific Time

About Seattle

Areas to know in Seattle

Capitol Hill
Ballard
Fremont

Weather in Seattle

Mild, wet winters and dry, mild summers. The Pacific Northwest's rainy reputation is strongest from October through April.

San Francisco to Seattle: 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.

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.

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

Leaving from San Francisco International (SFO)

By BART, ride to the SFO station in the International Terminal. BART says to walk, or take the AirTrain Red Line, to Terminal 1, 2 or 3 for domestic flights.
By Caltrain, change to BART at Millbrae, which BART says has a cross-platform connection to Caltrain.
There is no BART parking at the SFO station. BART says the closest station parking is at Millbrae.
Checkpoint, TSA PreCheck and CLEAR locations could not be confirmed for this guide. Check your airline and the airport before you leave.

Arriving at 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.

From SEA's SEA Underground guide dated 2 Sep 2025, which says Delta, United and almost all international airlines use the S and A gates. Gates can change, so check your boarding pass.

SEA has one terminal with six concourses: A, B and S at the south end, and C, D and N at the north end.
The N and S concourses are not connected to the other gates, so you reach them on the SEA Underground train. SEA says a train arrives every three minutes.
The Blue Line links the S, B and A concourses, the Green Line links N, C and D, and the Yellow Line shuttles between the A and D stations only.
SEA says every security checkpoint gives access to all gates.

Getting from SEA	Where to board	Where it goes
Link light rail 1 Line	From baggage claim, go up to the fourth floor, cross the skybridge to the parking garage and follow the signs to SeaTac/Airport station. A free Train-to-Plane shuttle runs from 5 a.m. to midnight. A fare applies on the train.	Downtown Seattle, with the line running from Federal Way to Lynnwood. SEA says the ride from downtown Seattle takes 38 minutes.
Rideshare (Lyft, UberX)	3rd floor of the parking garage. Cross a skybridge, one level below ticketing and one level above baggage claim, then go down one level.	Wherever you booked.
Uber Black and other premium rides	The baggage claim level door you choose in the app.	Wherever you booked.
Taxis	3rd floor of the parking garage, at the north and south curbs.	Metered taxis have three-digit numbers and one color. Flat-rate taxis charge by zip code and have four-digit numbers and two colors.

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.
Frontier, without a bundle	Not included. One personal item only.	Not included. Prices vary by travel date and when you buy.	Costs extra, or a seat is assigned after check-in.	Not covered here. Check Frontier's rules before you book.

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 6 fare checks from San Francisco to Seattle ran from 16 Sep to 14 Oct 2026. For the return direction, Seattle to San Francisco, EazAir's first 2 checks ran from 28 Sep to 5 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 double the lowest. The 6 checks returned 5 different results. The lowest result came on 6 Oct. That is a small sample, so it shows that prices move, not when they are lowest. Search your own dates for current prices.

Sources

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)
SEA: Security screening and checkpoints (no date shown, accessed 17 Oct 2026)
SEA: All aboard the SEA Underground (September 2, 2025, accessed 17 Oct 2026)
SEA: Terminal overview (no date shown, 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)
SEA: Metered and flat rate taxis (no date shown, accessed 17 Oct 2026)
Sound Transit: 1 Line, Lynnwood to Federal Way (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)
Frontier: What is included in my fare (last modified 25 Mar 2026, accessed 17 Oct 2026)
Frontier: Bag options (no date shown, accessed 17 Oct 2026)
Frontier: Bundles (no date shown, accessed 17 Oct 2026)
EazAir fare checks for SFO to SEA, 16 Sep 2026 to 14 Oct 2026; SEA to SFO, 28 Sep 2026 to 5 Oct 2026

Frequently asked questions

Which San Francisco airport does this page search?

It searches San Francisco International (SFO). Oakland (OAK) and San Jose (SJC) are separate airports in the same region, so check that your ticket says SFO.

How long is the BART ride between SFO and downtown San Francisco?

BART says trains from the SFO International Terminal take about 30 minutes to downtown San Francisco. Inside the airport, walk or take the AirTrain Red Line between the station and Terminal 1, 2 or 3.

Where do Delta and United flights arrive at Sea-Tac?

SEA's SEA Underground guide, dated 2 Sep 2025, says Delta, United and almost all international airlines use the S and A gates. Check your boarding pass, as gates can change.

How do I reach Link light rail from baggage claim at SEA?

Go up to the fourth floor, cross the skybridge to the parking garage and follow the signs to SeaTac/Airport station. A fare applies on the train, and the free Train-to-Plane shuttle runs from 5 a.m. to midnight.

Do the lowest fares from San Francisco to Seattle 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 and Frontier without a bundle include a personal item only.

How far apart are SFO and SEA?

SFO and SEA 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.