Flights from Seattle to San Francisco
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From $146 · Prices update daily
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The quick answer
Flights from Seattle to San Francisco start around $146 round-trip. Airlines on this route include: United Airlines, Alaska Airlines, Frontier Airlines (direct flights available). Cheapest month: August; peak: July (about +90%).
Price calendar — next 60 days
★ Cheapest: $146 on Wed, Aug 19 · Direct · AS
Lowest return fares · Prices update daily · Final price confirmed at booking
Price calendar — Seattle to San Francisco
Month-by-month lowest fares. Green = cheapest dates.
Flying to San Francisco? Compare from other US cities
Sometimes a nearby airport is cheaper. See San Francisco fares from other departure cities.
United States essentials
🇺🇸 Domestic flight — no passport required
Domestic flight — no passport required for US citizens. Bring REAL ID for security.
Full San Francisco visa guide →🆘 Emergency
911
💱 Currency
US Dollar ($)
🕐 Time zone
UTC−5 to −10
🗣️ Language
English
🔌 Plugs
Type A/B · 120V
🚗 Driving
Right side
💡 Tipping
Expected — 15–20% at restaurants
📞 Dial code
+1
Entry rules can change — always confirm with official sources before booking.
Stay connected in San Francisco
Skip roaming fees — get a local eSIM before you land. Works in 200+ countries and activates instantly, so you’re online the moment you touch down.
Travel insurance
Protect your Seattle to San Francisco trip against delays, cancellations, and medical emergencies. US travelers can compare plans from top insurers.
Airport transfer in San Francisco
Pre-book your ride into San Francisco. Fixed price, meet & greet, and a driver waiting at arrivals — no meter anxiety after a long flight.
Flight delayed or cancelled?
If your Seattle to San Francisco flight was delayed more than 3 hours or cancelled, you may be entitled to up to €600 in compensation under EU/UK rules — even if you flew a non-EU airline. Free to check, no win no fee.
More resources
Seattle to San Francisco — frequently asked
How much is a flight from Seattle to San Francisco?+
Fares start around $146 round-trip, ranging up to about $376 in peak periods. Prices update daily across 800+ airlines.
What is the cheapest month to fly Seattle to San Francisco?+
August typically has the lowest fares, while July is the most expensive (around +90%).
Are there direct flights from Seattle to San Francisco?+
Yes — direct flights are available on this route. Connecting itineraries are often cheaper.
Which airlines fly from Seattle to San Francisco?+
Carriers on this route include United Airlines, Alaska Airlines, Frontier Airlines. Compare them side by side in the search above.
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