Cheap flights from Illinois to Los Angeles from $83

The month of September is, on average, the cheapest month to fly to Los Angeles from Illinois, with most prices found around $225. If you aren’t able to travel during the month of September, then book flights to Los Angeles from Illinois during August instead. Flights to Los Angeles in August, while not as cheap as those in September, still average around $237.

Our data shows that Friday is the least expensive day to fly to Los Angeles. Tickets to fly out on this day can be as low as $332. Be sure to avoid booking your departure on a Monday as prices are generally higher than usual. According to our data, the average ticket price to Los Angeles on Monday is $438.

Our most recent data shows that the best time of day to fly to Los Angeles is in the evening. Flights from Illinois to Los Angeles during this time can be as low as $323. In the afternoon is when there is more demand to fly to Los Angeles, so prices are often more expensive at around $639 per ticket.

Fly from Chicago O'Hare Intl to Los Angeles for the best Illinois - Los Angeles flight prices

You are more likely to see cheaper flights to Los Angeles from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to Los Angeles for around $292 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Los Angeles from Illinois for as low as $238 on momondo.

There are 4 cabin classes available to choose from on Illinois to Los Angeles flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Delta, United Airlines, and Southwest are the most popular carriers operating from Illinois to Los Angeles

American Airlines, United Airlines and Frontier are the top three most popular airlines that fly to Los Angeles from Illinois according to our data. American Airlines is the first choice among our users, with 42% of people opting to fly with this airline when traveling to Los Angeles. Keep in mind that there are 8 different airlines that fly to Los Angeles on a routine basis, so you have a few additional options to choose from.

As of April 2026, there are 105 flights per day flying from Illinois to Los Angeles. The most common time of day flights depart is 4:00PM, with 37% of flights taking off at noon.

738 flights are operational weekly from Illinois to Los Angeles as of April 2026. The most popular departure day for this route is Sun, with 17% of flights per week taking off on this day.