Cheap flights from Chicago to San Francisco
Fares from $90 in December 2026. Compare every month below, then book with the site you like.
Search Chicago → San Francisco flightsCheapest Chicago to San Francisco fares by month
Lowest price per person found in recent searches. Prices change often and are checked when you book.
- November 2026Nov 16 · one way · Frontier · 2 stops$114See deal
- December 2026Dec 3 · one way · Frontier · 1 stop$90See deal
- January 2027Jan 5 · one way · Frontier · 1 stop$93See deal
- June 2027Jun 9 · one way · Alaska Airlines · 1 stop$174See deal
- October 2027Oct 10 · one way · Air Canada · 2 stops$529See deal
Chicago to San Francisco at a glance
- Distance1,842 miles
- Nonstop flight timeabout 4h 30m
- Cheapest monthDecember 2026
- Airport codesCHI → SFO
Plan your San Francisco trip
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Travel guides
Frequently asked questions
- How much is a flight from Chicago to San Francisco?
- The cheapest fare we found recently is $90 per person, departing Dec 3 on Frontier. Prices change daily, so search your dates to see today's fares.
- What is the cheapest month to fly from Chicago to San Francisco?
- December 2026 is currently the cheapest month, from $90. October 2027 is the most expensive, from $529.
- Are there direct flights from Chicago to San Francisco?
- The cheapest fares we found recently have at least one stop. Nonstop flights may still exist at a higher price; tick "Direct only" in the search to check.
- Which airlines fly from Chicago to San Francisco?
- The cheapest recent fares on this route were on Frontier, Alaska Airlines, Air Canada.
- How long is the flight from Chicago to San Francisco?
- Chicago and San Francisco are about 1,842 miles apart, so a nonstop flight takes roughly 4h 30m. Flights with a stop take longer, depending on the connection.
- How do I find the cheapest flight from Chicago to San Francisco?
- Search your dates on Gotoesy. We list fares from several booking sites sorted cheapest first, show nearby dates when your day has no saved fare, and send you straight to the seller to book.
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