San Francisco (SFO) to Chicago (ORD) flight deal from $240 USD in economy class

UAUnited Airlines

Round Trip•Economy

SFO

San Francisco International Airport

San Francisco, United States

ORD

O'Hare International Airport

Chicago, United States

$394 USD

-39%$240 USD

Verified Nov 3, 2025 at 3:27 AM

December 2025

Today

Mon

Tue

Wed

Thu

Fri

Sat

Sun

1$312 2$259 3$259 4$281 5$269 6$259 7$281 8$269 9$259 10$259 11$281 12$281 13$278 14$300 15$290 16$278 17$278 18$336 19$447 20$418 21$382 22$368 23$319 24$273 25$264 26$325 27$325 28$325 29$325 30$274 31$240 1 2 3 4

Rare Availability

5% of dates checked are available within 10% of the lowest price

Wednesday, December 17th, 2025

10 round-trip options

Returning

Mon, Dec 22, 2025•5 Day Trip

$296 USD

Google Flights

Returning

Tue, Dec 23, 2025•6 Day Trip

$287 USD

Google Flights

Returning

Wed, Dec 24, 2025•7 Day Trip

$278 USD

Google Flights

Returning

Thu, Dec 25, 2025•8 Day Trip

$323 USD

Google Flights

Returning

Fri, Dec 26, 2025•9 Day Trip

$459 USD

Google Flights

Returning

Sat, Dec 27, 2025•10 Day Trip

$567 USD

Google Flights

Returning

Sun, Dec 28, 2025•11 Day Trip

$482 USD

Google Flights

Returning

Mon, Dec 29, 2025•12 Day Trip

$428 USD

Google Flights

Returning

Tue, Dec 30, 2025•13 Day Trip

$380 USD

Google Flights

Returning

Wed, Dec 31, 2025•14 Day Trip

$319 USD

Google Flights