
Book Cheap United flight from Seattle (SEA) to San Francisco (SFO) from CA $163
Find The Best Day to Book a Cheap United Flights From Seattle to San Francisco
Cheapest United Flights from Seattle (SEA) to San Francisco (SFO)
The cheapest flights to San Francisco Intl. found within the past 7 days were CA $260 round trip and CA $163 one way. Prices and availability subject to change. Additional terms may apply.
Frequently asked questions
Grab a great United flight from SEA to SFO
To find a great deal on United flights with Travelocity, simply enter your origin and destination airports, pick your travel dates, and hit search. From here, you can sort by price, flight duration, and arrival/departure time. You can also filter to find nonstop flights.
Flying United Seattle to San Francisco gives you fights to choose from. With that direct flight time of , you’ll be touching down before you know it.
Find cheap flights with United between Seattle and San Francisco
United has a range of great fares on stacks of flights, and to find the most affordable for you, there are a few tricks you can try. Booking in advance, for example, is a great way to grab a fantastic deal. Also, choose the cheapest month, if you can. One-way flights from Seattle to San Francisco with United are February.
The more flexible you are, the more affordable flights you’re likely to find. Consider one-way flights and connecting flights, as well as standard roundtrip and direct options. Even if you’re flying today, cheap last-minute flights are easy to find by entering your travel dates and hitting search.
Reasons to book your United flights with Travelocity
Travelocity makes it easy to book a seat, anywhere in the world. The vast inventory, fast search, and advanced filters put some of the best deals on the planet in one place. Whether you’re traveling on business, with friends, family, or on your own, take your pick from some fantastic options. And with free cancellation and pay later options, you can travel more and worry less.
Airport code | Country | Airport name | Number of flights |
|---|---|---|---|
| ORD | USA | O'Hare Intl. | 227 |
| DEN | USA | Denver Intl. | 226 |
| IAH | USA | George Bush Intercontinental | 136 |
| IAD | USA | Washington Dulles Intl. | 100 |
| SFO | USA | San Francisco Intl. | 64 |
| LAX | USA | Los Angeles Intl. | 23 |
| EWR | USA | Liberty Intl. | 20 |
| FRA | DEU | Frankfurt Intl. | 19 |
| NRT | JPN | Narita Intl. | 19 |
| PEK | CHN | Capital Intl. | 16 |
Travelers ❤️ these 🏨 after their flight to San Francisco

SFO El Rancho Inn SureStay Collection by Best Western
I really enjoyef staying here. It is a big property! Staff was nice. I liked the late check out.
Reviewed on Jan 14, 2026

The Millwood - A Boutique Hotel
Friendly receptionist at check in. Nice room, good breakfast and free easy parking. Would stay again!
Reviewed on Jan 18, 2026

The Westin San Francisco Airport
Yes perfect
Reviewed on Jan 17, 2026
Want more than a(n) United Flight from Seattle to San Francisco?
Popular United Flight Routes from SEA
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