What are the cheapest airlines to fly from Irvine to Chicago one-way?

The cheapest airlines for a one-way flight from Irvine to Chicago are Frontier ($51), American Airlines ($106), and Delta ($108).

Weekly flight availability from Irvine to Chicago

The most flights from IR9 to CHI are scheduled on a Sunday (142 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (110 on average).

In terms of precipitation, rainfall in Chicago ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Chicago when rainfall is around 1.7 in.

If weather is an important factor for your trip to Chicago, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

What are the most popular routes from Irvine to Chicago?

Most travelers choose Los Angeles - Chicago O'Hare Intl, Los Angeles - Chicago Midway or Los Angeles - Chicago Greater Rockford when deciding on the best route from Irvine to Chicago.

What are the cheapest flights from Irvine to Chicago?

The cheapest flight price from Irvine to Chicago is $107. On average you can expect to pay $954. The most popular route, (Los Angeles - Chicago O'Hare Intl), can usually be booked for $189.

What are the most reliable airlines from Irvine to Chicago?

Before booking your flight to Chicago from Irvine, check out the most reliable airlines to get you to your destination on time: Atlas Air (100%), China Southern (96%), Air China( 88%).

What are the most popular airlines that fly from Irvine to Chicago?

American Airlines, United Airlines and Frontier are the most popular airlines when flying from Irvine to Chicago.

Can I find deals for flights from Irvine to Chicago that include hotel bookings?

Yes. In addition to deals on Irvine to Chicago flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Irvine to Chicago?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Irvine to Chicago.

Can I find deals for business class flights from Irvine to Chicago?

Yes. Cheapflights offers flight deals from Irvine to Chicago by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Find Cheap Flights from Irvine to Chicago

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Cheapflights Tip: The best prices from Irvine to Chicago are usually found in November or October, booked 62 days in advance, depart on a Wednesday or Thursday and return on a Thursday

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Most accurate provider	FlightHub 3 stars
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Popular in	June
Cheapest in	November
Average price	$327

Provider with most accurate pricing for Los Angeles-Chicago (CHI) flight deals.

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Highest demand for flights based on searches. 10% potential increase in price ($41 potential increase over avg. RT price).

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Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).

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Average for round-trip flights in September 2026

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Everything you need to know about your flight from Irvine to Chicago

Prices

Airlines

What is the cheapest time of day to fly from IR9 to CHI?

Unlike at noon, when flights are generally more expensive, you can save up to 19% on flights from Irvine to Chicago by exploring options for tickets in the afternoon.

What is the cheapest day to fly from Irvine to Chicago?

Travelers seeking maximum savings on their Irvine to Chicago flight should consider departing on Friday mornings when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Chicago

See what other customers who have flown with Southwest,Delta, andUnited Airlines from Irvine to Chicago have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Southwest

8.0

Very good

4,201 reviews

Reviews

1 / 20

6.0

Good

Reza,Jun 2026

TPA - MDW

The seats were super cramped and couldn’t move without hitting other passengers

Southwest

8.0

Very good

4,201 reviews

Southwest

8.0

Very good

4,201 reviews

Reviews

1 / 20

6.0

Good

Reza,Jun 2026

TPA - MDW

The seats were super cramped and couldn’t move without hitting other passengers

Delta

7.8

Good

8,611 reviews

Southwest

8.0

Very good

4,201 reviews

Reviews

1 / 20

6.0

Good

Reza,Jun 2026

TPA - MDW

The seats were super cramped and couldn’t move without hitting other passengers

United Airlines

7.4

Good

10,251 reviews

Southwest

8.0

Very good

4,201 reviews

Reviews

1 / 20

6.0

Good

Reza,Jun 2026

TPA - MDW

The seats were super cramped and couldn’t move without hitting other passengers

American Airlines

7.0

Good

12,099 reviews

Southwest

8.0

Very good

4,201 reviews

Reviews

1 / 20

6.0

Good

Reza,Jun 2026

TPA - MDW

The seats were super cramped and couldn’t move without hitting other passengers

Frontier

5.6

Fair

2,568 reviews

Southwest

8.0

Very good

4,201 reviews

Reviews

1 / 20

6.0

Good

Reza,Jun 2026

TPA - MDW

The seats were super cramped and couldn’t move without hitting other passengers

Related info for your journey

What are the cheapest airlines to fly from Irvine to Chicago one-way?
The cheapest airlines for a one-way flight from Irvine to Chicago are Frontier ($51), American Airlines ($106), and Delta ($108).
What are the most popular routes from Irvine to Chicago?
Most travelers choose Los Angeles - Chicago O'Hare Intl, Los Angeles - Chicago Midway or Los Angeles - Chicago Greater Rockford when deciding on the best route from Irvine to Chicago.
What are the most reliable airlines from Irvine to Chicago?
Before booking your flight to Chicago from Irvine, check out the most reliable airlines to get you to your destination on time: Atlas Air (100%), China Southern (96%), Air China( 88%).
What are the cheapest flights from Irvine to Chicago?
The cheapest flight price from Irvine to Chicago is $107. On average you can expect to pay $954. The most popular route, (Los Angeles - Chicago O'Hare Intl), can usually be booked for $189.
Can I find deals for flights from Irvine to Chicago that include hotel bookings?
Yes. In addition to deals on Irvine to Chicago flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Irvine to Chicago?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Irvine to Chicago.
Can I find deals for business class flights from Irvine to Chicago?
Yes. Cheapflights offers flight deals from Irvine to Chicago by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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Top 7 airlines flying from Irvine to Chicago

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$99	Average$293	FlexibilityNo cancel fee	On-time62%
JetBlue	Cheapest$166	Average$384	FlexibilityNo cancel fee	On-time62%
Delta	Cheapest$190	Average$357	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$197	Average$457	FlexibilityNo cancel fee	On-time69%
American Airlines	Cheapest$216	Average$422	FlexibilityNo cancel fee	On-time71%
Southwest	Cheapest$233	Average$469	FlexibilityNo cancel fee	On-time63%
Alaska Airlines	Cheapest$288	Average$502	FlexibilityNo cancel fee	On-time75%

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Cheap flights from Irvine, CA to Chicago (CHI)

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1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Find flight deals from Irvine to Chicago

Most accurate provider

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Popular in

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Cheapflights Insights

What is the cheapest time of day to fly from IR9 to CHI?

Unlike at noon, when flights are generally more expensive, you can save up to 19% on flights from Irvine to Chicago by exploring options for tickets in the afternoon.

What is the cheapest day to fly from Irvine to Chicago?

Travelers seeking maximum savings on their Irvine to Chicago flight should consider departing on Friday mornings when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Irvine to Chicago

The most flights from IR9 to CHI are scheduled on a Sunday (142 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (110 on average).

Reviews of airlines servicing Chicago

See what other customers who have flown with Southwest,Delta, andUnited Airlines from Irvine to Chicago have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

What are the cheapest airlines to fly from Irvine to Chicago one-way?

What are the most popular routes from Irvine to Chicago?

What are the most reliable airlines from Irvine to Chicago?

What are the cheapest flights from Irvine to Chicago?

Can I find deals for flights from Irvine to Chicago that include hotel bookings?

How can I find direct flights from Irvine to Chicago?

Can I find deals for business class flights from Irvine to Chicago?

Traveling to a place near Chicago?

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Explore flights to Chicago departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 29, 2026.

Complete your trip

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