Frontier AirlinesDepart16:25
Wed, Dec 2LAX → ORD
4h 53m · 1 stop
$75one way, per person
View deal
- Cheapest fare
- $75
- Cheapest month
- December
- Direct flights
- Yes
- Flight time
- 4h 10m
Frontier Airlines · Wed, Dec 2
from $75
Frontier Airlines
2,800 km
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Cheapest month to fly from Los Angeles to Chicago
Lowest one-way fare per person in each month. Choose a month to see every date.
Cheapest dates in December 2026
The lowest fares we've seen for each day, cheapest first.
Frontier AirlinesFrontier AirlinesDepart14:37
Wed, Dec 16LAX → ORD
5h 05m · 1 stop
$78one way, per person
View deal
Frontier AirlinesDepart19:41
Tue, Dec 1LAX → ORD
6h 42m · 2 stops
$92one way, per person
View deal
Frontier AirlinesDepart11:42
Mon, Dec 21ONT → ORD
4h 52m · 1 stop
$101one way, per person
View deal
Frontier AirlinesDepart00:44
Sun, Dec 20LAX → ORD
4h 10m · Direct
$125one way, per person
View deal
Plan the rest of your trip to Chicago
Where to stay, what to do and getting around, from our travel partners.
About flights from Los Angeles to Chicago
Los Angeles (LAX) and Chicago (CHI) are about 2,800 km apart. Direct flights take around 4h 10m, and recent direct fares were with Frontier Airlines. Over the next few months, one-way fares start from $75, and December 2026 is currently the cheapest month to fly.
These prices come from searches travellers made in the last 48 hours, so they move quickly. If you see a good fare, it's worth booking soon. FlightsExp is free to use: you book directly with our travel partner.
Frequently asked questions
How much is a flight from Los Angeles to Chicago?
The cheapest one-way fare we've seen recently is $75 with Frontier Airlines, departing Wednesday, December 2, 2026. Over the coming months, the lowest fare in each month ranges from $75 to $661.
What is the cheapest month to fly from Los Angeles to Chicago?
December 2026 currently has the lowest fares, from $75 one way.
Are there direct flights from Los Angeles to Chicago?
Yes. Recent direct fares were with Frontier Airlines.
How long is the flight from Los Angeles to Chicago?
A direct flight takes about 4h 10m. Los Angeles and Chicago are around 2,800 km apart.
Which airlines fly from Los Angeles to Chicago?
Recent fares on this route were with Frontier Airlines, Southwest Airlines, Alaska Airlines and Air Canada.
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