Cheap flights from San Francisco to Chicago
Cheapest current fares: $128 in August 2026, 2,965 km direct flight in ~3h 29m.
Cheapest month-by-month fares
Lowest available fare per calendar month from San Francisco (SFO) to Chicago (ORD). Refreshed daily.
San Francisco (SFO) → Chicago (ORD)
- August 2026 $128
- July 2026 $139
- June 2026 $143
- May 2026 $185
Frequently asked questions
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What is the cheapest month to fly from San Francisco to Chicago?
Based on current 6-month forward fare data, August 2026 is the cheapest month to fly from San Francisco (SFO) to Chicago (ORD), with fares starting from $128.
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What is the lowest current fare from SFO to ORD?
The lowest currently-listed fare from San Francisco (SFO) to Chicago (ORD) is $128 on 2026-08-15.
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How long is the flight from San Francisco to Chicago?
Direct flights from SFO to ORD cover approximately 2,965 km (1,842 miles), with an estimated flight time of 3h 29m. Operating airlines: AA, UA.
Related guides for this route
Sibling pages — full route detail, airport overviews, visa context, per-airline routes.