San Francisco International (SFO) to O'Hare International (ORD).
| Departure | Return | Price |
|---|---|---|
| 06/03/2026 | 06/09/2026 | $210 |
| 07/07/2026 | 07/14/2026 | $210 |
| 07/08/2026 | 07/14/2026 | $210 |
| 07/14/2026 | 07/21/2026 | $210 |
| 07/14/2026 | 07/22/2026 | $210 |
| 07/28/2026 | 08/05/2026 | $210 |
| 05/28/2026 | 06/02/2026 | $230 |
| 05/31/2026 | 06/09/2026 | $230 |
| 06/01/2026 | 06/09/2026 | $230 |
| 06/02/2026 | 06/09/2026 | $230 |
Based on current fares, August is the cheapest month to fly from San Francisco to Chicago, with average fares around $233 round trip (as low as $230).
May tends to be more expensive, averaging $283.
See the full month-by-month and day-of-week price analysis
Best Time to Fly SFO → ORDDeparture date prices (economy, round trip). Green = cheap, red = expensive.
The cheapest month to fly from San Francisco to Chicago is August, with average round-trip fares around $233. Fares in August start as low as $230. The most expensive month is May, averaging $283.
A nonstop flight from San Francisco to Chicago takes approximately 4h.
The cheapest flight from San Francisco to Chicago currently starts at $210 round trip in economy class.
The average round-trip flight price from San Francisco to Chicago is $275 in economy class.
The distance is 1846 miles (2970 km). with a nonstop flight time of about 4h. The lowest fare currently available is $210 departing in June. The average round-trip fare is $275.
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