Cheap flights from Chicago to San Francisco

One-way fares from $136 · CHI → SFO · prices found by travellers in the last 48 hours

Compare all dates San Francisco → Chicago
Cheapest fare
$136

Frontier Airlines · Thu, Jan 14

Cheapest month
January

from $136

Direct flights
Not recently

Usually 1+ stop

Quickest trip
6h 02m

2,990 km

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Cheapest month to fly from Chicago to San Francisco

Lowest one-way fare per person in each month. Choose a month to see every date.

  1. November 2026 $140
  2. December 2026 $151
  3. January 2027 Cheapest $136
  4. June 2027 $176
  5. October 2027 $529

Cheapest dates in January 2027

The lowest fares we've seen for each day, cheapest first.

Frontier Airlines
Depart07:30 Thu, Jan 14ORD → SFO 6h 17m · 1 stop
$136one way, per person
View deal
See every date in January 2027 →

Plan the rest of your trip to San Francisco

Where to stay, what to do and getting around, from our travel partners.

Where to stay

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Things to do

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Getting around

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About flights from Chicago to San Francisco

Chicago (CHI) and San Francisco (SFO) are about 2,990 km apart. We haven't seen direct fares on this route recently, so expect at least one stop; the quickest journey we've seen takes about 6h 02m. Over the next few months, one-way fares start from $136, and January 2027 is currently the cheapest month to fly.

These prices come from searches travellers made in the last 48 hours, so they move quickly. If you see a good fare, it's worth booking soon. FlightsExp is free to use: you book directly with our travel partner.

Frequently asked questions

How much is a flight from Chicago to San Francisco?

The cheapest one-way fare we've seen recently is $136 with Frontier Airlines, departing Thursday, January 14, 2027. Over the coming months, the lowest fare in each month ranges from $136 to $529.

What is the cheapest month to fly from Chicago to San Francisco?

January 2027 currently has the lowest fares, from $136 one way.

Are there direct flights from Chicago to San Francisco?

We haven't seen direct fares recently, so most journeys include at least one stop.

How long is the flight from Chicago to San Francisco?

The quickest journey we've seen takes about 6h 02m. Chicago and San Francisco are around 2,990 km apart.

Which airlines fly from Chicago to San Francisco?

Recent fares on this route were with Frontier Airlines, Alaska Airlines and Air Canada.

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