Airfare Deals American Airlines American Airlines AAdvantage Chicago Chicago ORD San Francisco San Francisco SFO United Airlines United Mileage Plus

UA and AA $151 to $181 round trip San Francisco to Chicago April-May

United and American Airlines both offer $83 one way fares from San Francisco to Chicago ORD. More dates are priced at $89 each way in April and May.

United Airlines has more low fare dates than American Airlines.

You can even fly United Airlines Chicago to San Francisco for $64 one way on April 28 to create a $152 round trip ticket.

United Airlines  Chicago ORD – San Francisco SFO (nonstop flights)

$151.20 round trip Thursday April 28 – Saturday May 7

ORD-SFO UA $151.20 Apr 28-May 7

American Airlines  San Francisco SFO – Chicago ORD (nonstop)

$181.20 round trip  Saturday April 30 – Saturday May 7

SFO-ORD AA $181 Apr30-May 7

SFO-ORD-SFO = 3,692 flight miles for AAdvantage members.

Loyalty Traveler curated Airfare Deals and Google Flights and Kayak Explore tutorials.