Chicago has two airports, California has five major ones, and the airlines flying between them range from full-service to bare-bones budget. That mix means there's usually a cheap fare to be found — if you know which Chicago airport to start from and which California city to aim for. Here's how to book the Chicago-to-California run for less.
O'Hare vs Midway: which Chicago airport?
| Airport | Code | Best for | Notes |
|---|---|---|---|
| O'Hare International | ORD | Most nonstops to every California airport | United & American hub; huge, widest schedule |
| Midway International | MDW | Southwest fares to LA, San Diego, Bay Area & more | Smaller, easier; often cheaper via Southwest |
Which California airport should you fly into?
Chicago has nonstop service to most of California's big airports, so match the destination to your trip:
- Los Angeles: LAX has the most competition and usually the best fares — but compare Burbank, Long Beach, John Wayne and Ontario too. See which LA airport is cheapest.
- San Francisco / Bay Area: SFO, Oakland and San Jose all take Chicago nonstops; Oakland often wins on price.
- San Diego: SAN has solid nonstop service from both O'Hare and Midway.
- Sacramento & others: reachable nonstop, especially on Southwest from Midway.
The cheapest months to fly
Fares from Chicago to California tend to bottom out in the fall shoulder (roughly September–October) and again in winter (January–February), when demand cools. Summer and the December holidays are the priciest — Chicagoans chasing California sun drive fares up. Aim for the shoulder seasons and you'll pay noticeably less.
How to book a cheap Chicago–California flight
- Price both O'Hare and Midway every time — the cheaper airport flips depending on the carrier and date.
- Stay flexible on the California airport, especially in LA and the Bay Area where multiple airports compete.
- Target the fall or winter shoulder and fly mid-week (Tuesday/Wednesday) for the lowest fares.
- Book about 1–3 months ahead for domestic trips; earlier for summer and holidays.
- Set a fare alert so you catch the drops the moment they land.
The bottom line
Chicago to California is a well-served, competitive route with real room to save. Compare O'Hare against Midway, lean on Southwest and the budget carriers out of Midway, stay flexible on your California airport, and target the fall or winter shoulder. Flying from elsewhere? See our guide to cheap flights from New York to Los Angeles, or the cheapest time to fly to California overall.
Search flights from Chicago to California
Ready when you are — search live fares from O'Hare and Midway to any California airport: