Cheap flights from San Francisco to Chicago O'Hare
San Francisco to Chicago O'Hare (SFO → ORD). We are tracking 19 fares on this route.
Cheapest tracked fare $83 · typical price $244 · you save about $161 (66%)
Cheapest fares we're tracking
Airline
Departs
Stops
Price
—
2026-10-14
1 stop
$83
—
2026-10-20
1 stop
$83
Frontier Airlines
2026-09-21
1 stop
$89
Frontier Airlines
2026-09-29
1 stop
$92
Frontier Airlines
2026-09-24
1 stop
$100
Frontier Airlines
2026-09-07
1 stop
$100
—
2026-09-30
1 stop
$109
—
2026-11-04
1 stop
$109
—
2026-09-23
1 stop
$109
—
2026-12-01
1 stop
$115
Frontier Airlines
2026-10-21
1 stop
$117
—
2027-01-20
1 stop
$119
—
2027-02-03
1 stop
$119
American Airlines
2026-09-06
Direct
$123
Frontier Airlines
2026-10-02
1 stop
$126
JetBlue
2026-11-02
1 stop
$126
Frontier Airlines
2026-10-22
1 stop
$135
United Airlines
2026-12-19
Direct
$173
American Airlines
2026-09-04
1 stop
$174
Could you save more?
The airport you were going to fly from is often not the cheapest one. Compare every airport in a region against each other, or check whether a multi-day stopover beats the direct fare.
How cheap can flights from San Francisco to Chicago O'Hare get?
The cheapest fare we have tracked on this route is $83, compared with a typical $244 for a trip of this distance.
Is it cheaper to fly to Chicago O'Hare from a different airport?
Often, yes. Fares out of secondary airports are frequently cheaper than the obvious hub, but they are the ones most likely to be missing from a normal search. Our reverse search compares every airport in a region against each other so the cheaper departure point is not hidden.
Could a stopover make San Francisco to Chicago O'Hare cheaper?
Sometimes. On thin long-haul routes a two-leg trip with a multi-day stopover can beat the direct fare, and occasionally a direct fare is not sold at all. Our detour search prices those routings against the direct flight.