San Francisco (SFO) to Chicago (ORD) flight deal from $217 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

$351 USD

-38%$217 USD

Verified Nov 28, 2025 at 6:22 AM

December 2025

Today

Mon

Tue

Wed

Thu

Fri

Sat

Sun

1$687 2$636 3$568 4$447 5$432 6$392 7$439 8$426 9$422 10$402 11$407 12$398 13$311 14$369 15$368 16$368 17$368 18$467 19$496 20$522 21$488 22$428 23$303 24$233 25$233 26$291 27$282 28$318 29$282 30$249 31$233 1$233 2$348 3$371 4$322

Extremely Rare Availability

4% 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

$368 USD

Google Flights

Returning

Tue, Dec 23, 2025•6 Day Trip

$384 USD

Google Flights

Returning

Wed, Dec 24, 2025•7 Day Trip

$378 USD

Google Flights

Returning

Thu, Dec 25, 2025•8 Day Trip

$410 USD

Google Flights

Returning

Fri, Dec 26, 2025•9 Day Trip

$688 USD

Google Flights

Returning

Sat, Dec 27, 2025•10 Day Trip

$697 USD

Google Flights

Returning

Sun, Dec 28, 2025•11 Day Trip

$584 USD

Google Flights

Returning

Mon, Dec 29, 2025•12 Day Trip

$538 USD

Google Flights

Returning

Tue, Dec 30, 2025•13 Day Trip

$453 USD

Google Flights

Returning

Wed, Dec 31, 2025•14 Day Trip

$410 USD

Google Flights