Seattle to San Francisco (SEA–SFO) — Airlines, Schedules & Connections
Flight Schedule
187 flights
Verified 12m ago
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No flights match your filters.
No nonstop flights on this route. connecting options below.
✦ 1-Stop
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Seattle to San Francisco
3 carriers, 560 flights/week nonstop.
3 Airlines
560 Flights/wk
679 mi
2h 4m nonstop
138 1-stop hubs
SEA–SFO is served by 3 airlines with nonstop service. Alaska Airlines, United Airlines and Delta Air Lines lead the route. The flight covers 679 miles in approximately 2h 4m. Beyond nonstop, 138 hubs offer 1-stop connections.
Carriers on this route
Airline Landscape
All carriers operating nonstop SEA–SFO service, compared side by side.
| Airline | Freq/wk | Aircraft | Duration | Dep OTP | Alliance | Codeshares |
|---|---|---|---|---|---|---|
| AS Alaska Airlines Also: BA, CX, DE, FI, FJ, HA, JL, KE, QF, QR | 77 | 737, 738, 739, 73H, 73J, 7M9, B38M, B39M | 2h04-2h31 | Oneworld | BA, CX, DE, FI, FJ, HA, JL, KE, QF, QR | |
| UA United Airlines Also: AV, AZ, CA, CM, NH, OZ, VA | 69 | 319, 320, 738, 7M8, 7M9, E7W | 2h10-2h30 | Star Alliance | AV, AZ, CA, CM, NH, OZ, VA | |
| DL Delta Air Lines Also: AF, AM, KE, SK, VS, WS | 42 | 223, BCS1, BCS3, E75L, E7W | 2h17-2h24 | SkyTeam | AF, AM, KE, SK, VS, WS |
Aircraft on this route
OTP based on airport-level delay snapshots. Duration ranges reflect seasonal/directional variation.
Schedule
Weekly Schedule Pattern
Nonstop flight frequency by day of week, SEA to SFO direction.
Mon
83
flights
Tue
75
flights
Wed
84
flights
Thu
76
flights
Fri
82
flights
Sat
75
flights
Sun
85
flights
Departure time distribution
12 AM6 AM12 PM6 PM12 AM
Morning departures
Afternoon/evening departures
95
Nonstop flights
560
Outbound / wk
565
Return / wk
Connections
Connection Landscape
Beyond nonstop. 1-stop and 2-stop options for SEA to SFO.
1-STOP
One-Stop Connections
138
Hubs
~3h
Fastest
~44h
Longest
Verified with published schedule alignment and minimum connection time.
2-STOP
Two-Stop Connections
4,440
Candidates
Two-stop connections loaded in the connections tab above.
Connections computed from published schedules with minimum connection time verification. Use the interactive explorer above the fold to filter by airline, tier, and layover time.
Alternatives
Other ways to reach San Francisco from Seattle
Nearby airports with service to San Francisco International Airport.
| Metric | SEA→SFO | BFI→SFO | PAE→SFO |
|---|---|---|---|
| Distance from SEA | – | 5 mi | 32 mi |
| Nonstop airlines | 3 | 9 | 6 |
| Weekly flights | 560 | 4 | 51 |
| Flight time | 2h 4m | 1h 28m | 2h 8m |
| Departure OTP | 90% | – | – |
Seattle (BFI) to San Francisco flights · Everett (PAE) to San Francisco flights · Victoria (YYJ) to San Francisco flights
Airports within 200 miles of SEA with service to San Francisco International Airport.
Know before you go
Travel Essentials
Practical planning for this route.
Time Difference
0h
San Francisco is 0 hours
the same as
Seattle.
SEA: PDT · SFO: PDT
When it's 6:00 PM in Seattle, it's 6:00 PM in San Francisco.
SEA: PDT · SFO: PDT
When it's 6:00 PM in Seattle, it's 6:00 PM in San Francisco.
Distance & Flight Time
679 mi / 1,093 km
Nonstop flight time is approximately 2h 4m to 2h 31m.
Getting to SEA
Link Light Rail runs from downtown Seattle (Westlake station) to the airport in 38 minutes ($3.50 peak). Trains run every 6–12 minutes during peak hours from 5am to 1am. Ride-shares run $30–50 from downtown; SR-99 and I-5 can be heavily congested southbound during afternoon rush (3–7pm).
Sound Transit 574 express bus serves Tacoma ($2.50–4). Sounder commuter rail connects Tacoma to the airport area via a shuttle.
Getting from SFO
BART from SFO station (free AirTrain from any terminal to the station) to downtown San Francisco takes 30–40 minutes ($10.45 to Embarcadero). Traffic on 101 can make taxis and ride-hails much slower during peak hours; BART skips all of that. BART also reaches Oakland, Berkeley, and Millbrae for Caltrain connections.Ride-hails from SFO use a dedicated garage pickup area; follow signs. Taxis are metered; downtown SF costs $40–60. Caltrain to the Peninsula (Mountain View, Palo Alto, San Jose) requires taking BART to Millbrae station for the transfer. Rental cars are at a consolidated facility accessible by AirTrain.
San Francisco Climate
Coastal fog dominates the climate pattern. The thick marine layer ("Karl the Fog") rolls into SFO from the Pacific regularly in summer (June–September), causing significant low-visibility delays even on days that appear sunny inland. Morning fog burns off by afternoon most days, but persistent IFR conditions can last all day. This is the primary flight disruption risk at SFO.
Temperatures are mild year-round (10–20°C) with little seasonal variation. Winters bring rain (December–March) and occasional atmospheric river events that cause brief but intense flooding on the 101. Summers are cool. Pack a light jacket year-round. Wind off the bay affects small aircraft approach paths.
Facts
SEA–SFO Quick Facts
Key statistics for the Seattle to San Francisco route.
Route details
Distance679 mi / 1,093 km
Flight time2h 4m to 2h 31m
Time difference0 hours
Airlines (nonstop)3
Weekly flights560 out / 565 return
1-stop connections138 hubs
Origin: SEA
Full nameSeattle–Tacoma International Airport
IATA / ICAOSEA / KSEA
TimezoneAmerica/Los_Angeles
Passengers/yr52.6M
Elevation433 ft / 132 m
Destination: SFO
Full nameSan Francisco International Airport
IATA / ICAOSFO / KSFO
TimezoneAmerica/Los_Angeles
Passengers/yr52.3M
Elevation13 ft / 4 m
FAQ
Frequently Asked Questions
Common questions about SEA to SFO flights.
Nonstop flights from Seattle–Tacoma International Airport to San Francisco International Airport take approximately 2h 4m to 2h 31m. The route covers 679 miles.
3 airlines operate nonstop service: Alaska Airlines, Delta Air Lines and United Airlines. Plus 22 codeshare partners.
There are approximately 560 nonstop flights per week from SEA to SFO. The return direction has about 565 weekly flights.
Yes, 1-stop connections are available through BFI, PRB, YYJ, STS, SJC, EAT, YKM, YLW, SBD, GTF, SCF, PAE, VNY, HDN, ICT, APA, BLD, ASE, EGE, ACV, FTW, AFW, JAC, MEM, SGR, FAI, TUL, MKE, CPS, MSN, YKF, MTY, GNV, BRO, CHS, GDL, TEB, IND, RSW, BZE, RDD, RDM, OKC, OMA, MFR, SMF, LAX, RNO, CMH, EUG, SLC, GEG, PDX, BOI, SAT, MRY, KEF, SBP, STL, FAT, YVR, SBA, PSC, ONT, ABQ, LAS, BZN, SNA, SAN, DEN, TUS, DUB, DAL, MSO, MDW, FCA, IAH, PHX, YYC, DFW, KIX, MSP, BUR, PSP, NRT, ATL, CLE, MSY, PIT, BNA, AUS, DTW, ORD, MIA, DCA, MEX, MUC, TPA, CVG, BWI, MCO, PHL, CDG, RDU, SUN, ANC, MCI, CLT, EWR, OGG, BOS, IAD, JFK, HNL, FRA, HND, FLL, YYZ, AMS, YEG, LHR, KOA, LIH, ICN, SJD, PVR, CUN, LIR, MNL, FCO, PEK, TPE, HKG, SIN, PVG, IST, DOH and DXB. These options provide additional schedule flexibility.
Yes, return flights from SFO to SEA are available. Use the direction toggle at the top to view the return schedule.
Click the 'Search Flights' button to check availability and prices on Google Flights. You can also compare airlines and schedules on this page to find the best option.
See the On-Time Performance section for the latest delay data at both airports. This shows departure and arrival reliability to help you plan.
Route data is updated regularly from official airline schedules. On-time performance data comes from recent airport delay snapshots.
At SFO, Alaska Airlines operates from Terminal 2 (Harvey Milk Terminal). Delta uses Terminal 1 (the renovated boarding areas). United uses Terminals 3 and the international Terminal A for its mainline flights. Arrivals from SEA land at whichever terminal matches your carrier. The inter-terminal AirTrain connects all terminals in 10 to 15 minutes and is free.
Yes. SFO's coastal fog is most disruptive in late spring and summer (May through August) and on winter mornings following clear cold nights. The fog typically burns off by mid-morning, but early flights from Seattle (05:00 to 08:00 arrivals at SFO) can face instrument approach delays. SFO's runway configuration means fog reduces capacity to two landing streams, creating ground delay programs that push back Seattle departures by 30 to 90 minutes.
All three nonstop carriers (Alaska, Delta, United) post 2 hour 20 to 2 hour 35 minute block times on this 680-mile segment. There is no meaningful difference in routing. Aircraft type varies: Alaska uses 737-900s and A321s, Delta flies A220s and 737-900ERs, United uses 737-800s and 737-900s. Choose based on schedule fit and loyalty program, not block time.
Seattle to San Francisco: West Coast Trunk Route
SEA-SFO carries 126 weekly nonstop departures across Alaska Airlines, Delta Air Lines, and United Airlines. Alaska holds the strongest position at SEA, which is its primary hub. United uses SFO as a major Pacific gateway. Delta runs the segment to feed its domestic connecting network. Block time is 2 hours 24 minutes on average. Departures spread from 05:00 through 22:15, with roughly 18 flights per day. Aircraft are predominantly 737 variants and A220s. The 680-mile segment is bread-and-butter West Coast flying for all three carriers.
Delay Patterns and Connection Considerations
SFO is the primary delay risk on this route. Coastal fog reduces runway capacity several times per month, especially on May-through-August mornings when the fog layer is most persistent. Seattle is less susceptible to systemic weather delays, though winter storms can affect SEA in December and January. Passengers connecting through SFO to Asia-Pacific should add buffer time; SFO international departures in the late morning are the most vulnerable to fog-driven inbound delays. The AirTrain at SFO links all terminals without re-clearing security.