For travel over Memorial Day weekend, fly nonstop from Chicago to San Francisco for $267 on United.
We found seats in basic economy, departing ORD on Friday, May 25, returning from SFO on Tuesday, May 29. Economy seats are available for these dates at $387 round-trip, so pack light or pay up.
You'll find lower fares available for non-holiday travel.
Visit our Chicago ORD fare listings for a complete look at current finds.
Need a place to crash in SF? Here's what's available for these dates on Hotelwatchdog.