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

The cheapest airlines for a one-way flight from Chicago to Berkeley are JetBlue ($73), Frontier ($77), and American Airlines ($118).

Weekly flight availability from Chicago to Berkeley

The most flights from CHI to B9R are scheduled on a Friday (102 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (70 on average).

In terms of precipitation, rainfall in Berkeley ranges from 0.0 - 4.4 inches per month. January is typically the wettest month, when rainfall can reach 4.4 in. July is typically the driest time to visit Berkeley when rainfall is around 0.0 in.

If weather is an important factor for your trip to Berkeley, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

What are the cheapest flights from Chicago to Berkeley?

While on average a flight from Chicago to Berkeley is generally $1,105, our data shows the cheapest flight currently is $121. When looking at the most popular route, (Chicago O'Hare Intl - San Francisco), you can expect to pay $210 for that flight.

What are the most reliable airlines from Chicago to Berkeley?

The top 3 most reliable airlines when flying from Chicago to Berkeley are ANA (89%), Porter Airlines (86%) and Lufthansa (85%).

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

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

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

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

How can I find direct flights from Chicago to Berkeley?

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

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

Yes. Cheapflights offers flight deals from Chicago to Berkeley 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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Cheapflights Tip: The best prices from Chicago to Berkeley are usually found in September or October, booked 84 days in advance, depart on a Thursday or Friday and return on a Wednesday

Find flight deals from Chicago to Berkeley

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Popular in	June
Cheapest in	September
Average price	$423

Provider with most accurate pricing for Chicago (CHI)-San Francisco flight deals.

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Provider most trusted by Cheapflights users for Chicago (CHI)-San Francisco flights.

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Highest demand for flights based on searches. 5% potential increase in price ($24 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 November 2026

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

Prices

Airlines

What is the cheapest time of day to fly from CHI to B9R?

A simple way to save on the total cost of your ticket is to fly from Chicago to Berkeley in the evening. If you’re flexible enough to do this you can expect to save up to 18% on your trip compared to booking a flight in the afternoon.

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

Travelers seeking maximum savings on their Chicago to Berkeley flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Berkeley

Peruse reviews from past customers who have flown with Southwest,United Airlines, andJetBlue from Chicago to Berkeley to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Southwest

8.0

Very good

4,218 reviews

Reviews

1 / 20

10.0

Excellent

Walter,May 2026

LAS - BUR

Short but excellent flight. Everyone was friendly and professional it was a great flight!

Southwest

8.0

Very good

4,218 reviews

Southwest

8.0

Very good

4,218 reviews

Reviews

1 / 20

10.0

Excellent

Walter,May 2026

LAS - BUR

Short but excellent flight. Everyone was friendly and professional it was a great flight!

United Airlines

7.3

Good

10,472 reviews

Southwest

8.0

Very good

4,218 reviews

Reviews

1 / 20

10.0

Excellent

Walter,May 2026

LAS - BUR

Short but excellent flight. Everyone was friendly and professional it was a great flight!

JetBlue

7.1

Good

3,065 reviews

Southwest

8.0

Very good

4,218 reviews

Reviews

1 / 20

10.0

Excellent

Walter,May 2026

LAS - BUR

Short but excellent flight. Everyone was friendly and professional it was a great flight!

American Airlines

7.0

Good

12,226 reviews

Southwest

8.0

Very good

4,218 reviews

Reviews

1 / 20

10.0

Excellent

Walter,May 2026

LAS - BUR

Short but excellent flight. Everyone was friendly and professional it was a great flight!

Frontier

5.5

Fair

2,506 reviews

Southwest

8.0

Very good

4,218 reviews

Reviews

1 / 20

10.0

Excellent

Walter,May 2026

LAS - BUR

Short but excellent flight. Everyone was friendly and professional it was a great flight!

Related info for your journey

What are the cheapest airlines to fly from Chicago to Berkeley one-way?
The cheapest airlines for a one-way flight from Chicago to Berkeley are JetBlue ($73), Frontier ($77), and American Airlines ($118).
What are the most reliable airlines from Chicago to Berkeley?
The top 3 most reliable airlines when flying from Chicago to Berkeley are ANA (89%), Porter Airlines (86%) and Lufthansa (85%).
What are the cheapest flights from Chicago to Berkeley?
While on average a flight from Chicago to Berkeley is generally $1,105, our data shows the cheapest flight currently is $121. When looking at the most popular route, (Chicago O'Hare Intl - San Francisco), you can expect to pay $210 for that flight.
Can I find deals for flights from Chicago to Berkeley that include hotel bookings?
Yes. In addition to deals on Chicago to Berkeley flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Chicago to Berkeley?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Chicago to Berkeley.
Can I find deals for business class flights from Chicago to Berkeley?
Yes. Cheapflights offers flight deals from Chicago to Berkeley by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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Top 7 airlines flying from Chicago to Berkeley

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$110	Average$270	FlexibilityNo cancel fee	On-time62%
Delta	Cheapest$136	Average$350	FlexibilityNo cancel fee	On-timeN/A
JetBlue	Cheapest$162	Average$336	FlexibilityNo cancel fee	On-time62%
Alaska Airlines	Cheapest$165	Average$368	FlexibilityNo cancel fee	On-time75%
American Airlines	Cheapest$236	Average$471	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$255	Average$508	FlexibilityNo cancel fee	On-time69%
Southwest	Cheapest$257	Average$435	FlexibilityNo cancel fee	On-time63%

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Cheap flights from Chicago (CHI) to Berkeley, CA

Find cheap flights from Chicago to Berkeley with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Find flight deals from Chicago to Berkeley

Most accurate provider

Most trusted provider

Popular in

Cheapest in

Average price

Cheapflights Insights

What is the cheapest time of day to fly from CHI to B9R?

A simple way to save on the total cost of your ticket is to fly from Chicago to Berkeley in the evening. If you’re flexible enough to do this you can expect to save up to 18% on your trip compared to booking a flight in the afternoon.

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

Travelers seeking maximum savings on their Chicago to Berkeley flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Chicago to Berkeley

The most flights from CHI to B9R are scheduled on a Friday (102 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (70 on average).

Reviews of airlines servicing Berkeley

Peruse reviews from past customers who have flown with Southwest,United Airlines, andJetBlue from Chicago to Berkeley to help guide your decision. You can also see how each airline stacks up 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 Chicago to Berkeley one-way?

What are the most reliable airlines from Chicago to Berkeley?

What are the cheapest flights from Chicago to Berkeley?

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

How can I find direct flights from Chicago to Berkeley?

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Chicago to Berkeley

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Berkeley by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Chicago to Berkeley by cabin class

Find flights from Chicago to Berkeley, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Chicago and Berkeley flights

Browse other Chicago and Berkeley flight options. Last updated on November 9, 2026.

Other flights from Chicago

Browse through other flights departing from Chicago. Flights are based on user searches made on Cheapflights and were last updated on November 9, 2026.

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Top 7 airlines flying from Chicago to Berkeley

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