Chicago (ORD) to Los Angeles (LAX): 1,741 miles (2,802 km) great-circle, about 4h 00m nonstop by our estimate. Cheapest fare observed: $167 round-trip on Frontier, with 1 stop, departing June 6, 2026.
$167 round-trip, Frontier F93135, departing 2026-06-06 at 16:05, returning 2026-06-13. The recorded itinerary left on a Saturday, returning on a Saturday 7 nights later; the fare was observed 42 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $167, it ranked 6th of the 30 round-trip fares we recorded from ORD (median $221). That is 9.6 cents per great-circle mile (round-trip price over one-way distance), below the ORD median of 16.6 cents across 30 round-trip routes.
Routes from ORD of similar length: Guadalajara (1,733 mi) at $199 and Seattle (1,716 mi) at $241.
Frontier had the cheapest fare on 9 of 30 ORD routes. It is the 15th longest of the 30 routes we track from ORD.
Of 40 departure airports with a fare to Los Angeles, Chicago (ORD) ranked 8th at $167. Lowest: $77 from Seattle (SEA); highest: $1224 from Sapporo (CTS); 11 nonstop. Cheapest-fare airlines (routes): Frontier (18), Spirit (5), Southwest (3), EVA Air (2), Fiji Airways (2) and WestJet (2), plus 8 more.
The reverse, Los Angeles (LAX) to Chicago (CHI), was $126 round-trip on Frontier, 1 stop, departing June 2, 2026. Los Angeles to Chicago flights.
Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones America/Chicago, America/Los_Angeles; flight time is our estimate.