Found 19 Sep

Chicago →to San FranciscoUnited States

€160usually €297−46%

Return, including taxes.

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Airline

Frontier

Airports

ORD to SFO

Route

1 stop

Travel dates

5–12 Dec 2026

We found return flights from Chicago, United States to San Francisco, United States for €160 with Frontier, leaving 5 December and returning 12 December 2026. Similar departures we checked cost around €297, €137 more than this fare. There's one stop on the itinerary.

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