Chicago to San Francisco flights
The cheapest round trip we found from Chicago to San Francisco is $283 (Dec 25 – 31, 1 stop), 16% below the usual $336.
CHI to SFO · Round trip · Economy · Prices per person in USD · Price found (3 days ago)
Cheapest found
Cheapest round trip by month
Lowest fare found per departure month| Month | Cheapest round trip |
|---|---|
| November 2026 | $376 |
| December 2026 | $283 |
| January 2027 | $226 (cheapest month) |
| February 2027 | $303 |
| March 2027 | No fares found yet |
| April 2027 | $368 |
| May 2027 | $381 |
Cheapest dates in the next 4 months
Round trip, per person-
Dec 25 – 31 6 nights · leave Fri$283 −16% vs usual$283 −16% vs usual Book
Frontier Airlines 1 stop · 6h 19m -
Dec 25 – 30 5 nights · leave Fri$286 −15% vs usual$286 −15% vs usual Book
Frontier Airlines 1 stop · 6h 19m
-
Feb 9 – 13, 2027 4 nights · leave Tue$303 −10% vs usual$303 −10% vs usual Book
Frontier Airlines 1 stop · 5h 55m
-
Dec 2 – 5 3 nights · leave Wed$311 −7% vs usual$311 −7% vs usual Book
Frontier Airlines 1 stop · 6h 28m
-
Feb 10 – 13, 2027 3 nights · leave Wed$340$340 Book
Frontier Airlines 1 stop · 5h 45m
-
Nov 19 – 21 2 nights · leave Thu$380 +13% vs usual$380 +13% vs usual Book
Frontier Airlines 1 stop · 5h 52m
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Nov 25 – 30 5 nights · leave Wed$399 +19% vs usual$399 +19% vs usual Book
Frontier Airlines 1 stop · 7h 51m
-
Nov 25 – 29 4 nights · leave Wed$520 +55% vs usual$520 +55% vs usual Book
Frontier Airlines 1 stop · 7h 51m
Prices change often. The booking site shows the final price before you pay. Other dates? Set an alert
Things to do in San Francisco
One Go City pass for Golden Gate Bay Cruise, Exploratorium, Filoli and more
- All-Inclusive Pass Unlimited Visit as many attractions as you like for 1–5 days from $109 See pass
- Explorer Pass Pick 2–5 of 25 attractions from $89 See pass
- Essentials Pass A few top attractions, chosen as you go from $74 See pass
Go City prices checked Oct 23, 2026; the final price is on Go City. Partner links: we may earn a commission if you book, at no extra cost to you.
Plan the rest of your trip
San Francisco · Dec 25 – 31Partner links: we may earn a commission if you book, at no extra cost to you.
Good to know
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Flights to San Francisco from other cities
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Chicago to San Francisco: questions
How much does a flight from Chicago to San Francisco cost?
The cheapest round trip we have found right now is $283, leaving December 25 and returning December 31. The usual price on this route is about $336, so this fare is 16% less. Prices are per person, economy, in USD.
What is the cheapest month to fly from Chicago to San Francisco?
January 2027, with round trips from $226. The most expensive month in our data is May (from $381). Based on the 6 months ahead we have prices for.
Which airports do Chicago to San Francisco flights use?
Chicago airports include O'Hare International (ORD), Chicago Midway International (MDW) and Chicago Rockford International (RFD). San Francisco airports include San Francisco International (SFO). The prices on this page cover every airport in both cities (CHI and SFO are the city codes).
About this route
We track round-trip economy fares from Chicago (United States) to San Francisco (United States) using Travelpayouts / Aviasales data. The cheapest round trip we've found is $283, departing December 25 and returning December 31, about 16% below the usual $336. Right now we're following 8 upcoming date combinations on this route. The cheapest month to fly in our data is January, from $226. Prices are per person and were correct when found; the final price is set by the airline or booking site when you book.