How do most travelers feel about Frontier?

The general consensus from 4,016 Cheapflights users is that Frontier is a 6.2/10. Select your travel dates above for updated prices on flights from Chicago to San Francisco (CHI-SFO).

Can I get a flight from Chicago to San Francisco on Frontier for under $300?

Frontier offers 50 flights from Chicago to San Francisco for under $300. Prices vary by date and time. To see all prices and select your dates, click here.

How far ahead should I book a flight from Chicago to San Francisco with Frontier?

Booking with Frontier 63 days in advance of your planned departure date is, on average, the best time to get cheap flights from Chicago to San Francisco. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Chicago to San Francisco with Frontier?

Currently, the most affordable month to book a Frontier flight from Chicago to San Francisco in September, with an average price of $268. Conversely, traveling with Frontier from Chicago to San Francisco in June will be the most expensive, with an average cost of $385. Various factors influence flight prices, so comparing airlines, departure airports, and times can help reduce costs.

In terms of precipitation, rainfall in San Francisco 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 San Francisco when rainfall is around 0.0 in.

Fly Frontier from Chicago to SFO as low as $67

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Cheapflights users flying from Chicago to San Francisco on Frontier typically fly into San Francisco and depart from Chicago O'Hare Intl. Select your dates above for pricing.

Frontier flights from Chicago to San Francisco in 2024

Popular in	March
Cheapest in	September
Average price (all airlines)	$300
One-way from	$67
Round-trip from	$138

Highest demand for flights from Chicago to San Francisco; 3% potential price increase.

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Best time to find cheap flights from Chicago to San Francisco; 2% potential price drop.

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Average price for all Chicago to San Francisco flights (one-way and round-trip).

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Cheapest one-way Frontier flight from Chicago to San Francisco

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Cheapest round-trip Frontier flight from Chicago to San Francisco

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Can I get a flight from Chicago to San Francisco on Frontier for under $300?
Frontier offers 50 flights from Chicago to San Francisco for under $300. Prices vary by date and time. To see all prices and select your dates, click here.
How do most travelers feel about Frontier?
The general consensus from 4,016 Cheapflights users is that Frontier is a 6.2/10. Select your travel dates above for updated prices on flights from Chicago to San Francisco (CHI-SFO).

Cheapest Frontier flights from Chicago to San Francisco

vie. 5/314:18 pmMDW - SFO

Nonstop4h 29mFrontier

lun. 6/39:15 amSFO - MDW

Nonstop4h 12mFrontier

Deal found 5/30$133

Pick Dates

vie. 6/74:18 pmMDW - SFO

Nonstop4h 28mFrontier

lun. 6/109:09 amSFO - MDW

Nonstop4h 11mFrontier

Deal found 5/30$137

Pick Dates

vie. 5/314:18 pmMDW - SFO

Nonstop4h 29mFrontier

lun. 6/39:15 amSFO - MDW

Nonstop4h 12mFrontier

Deal found 5/29$141

Pick Dates

Direct flights from Chicago to San Francisco on Frontier

sáb. 9/144:09 pmMDW - SFO

Nonstop4h 38mFrontier

lun. 9/169:03 amSFO - MDW

Nonstop4h 11mFrontier

Deal found 5/29$138

Pick Dates

mié. 7/34:23 pmMDW - SFO

Nonstop4h 28mFrontier

mié. 7/109:03 amSFO - MDW

Nonstop4h 10mFrontier

Deal found 5/29$140

Pick Dates

lun. 9/234:09 pmMDW - SFO

Nonstop4h 38mFrontier

sáb. 9/289:03 amSFO - MDW

Nonstop4h 11mFrontier

Deal found 5/30$144

Pick Dates

Last minute deals on Cheapflights

vie. 6/74:18 pmMDW - SFO

Nonstop4h 28mFrontier

lun. 6/109:09 amSFO - MDW

Nonstop4h 11mFrontier

Deal found 5/30$137

Pick Dates

vie. 6/74:18 pmMDW - SFO

Nonstop4h 28mFrontier

lun. 6/109:09 amSFO - MDW

Nonstop4h 11mFrontier

Deal found 5/30$163

Pick Dates

mié. 6/54:18 pmMDW - SFO

Nonstop4h 28mFrontier

mié. 6/129:09 amSFO - MDW

Nonstop4h 11mFrontier

Deal found 5/29$165

Pick Dates

One-way Frontier flights to San Francisco from Chicago

vie. 6/74:18 pmMDW - SFO

Nonstop4h 28mFrontier

Deal found 5/30$67

Pick Dates

vie. 6/74:18 pmMDW - SFO

Nonstop4h 28mFrontier

Deal found 5/30$68

Pick Dates

sáb. 8/244:09 pmMDW - SFO

Nonstop4h 38mFrontier

Deal found 5/29$69

Pick Dates

Best time to book a flight from Chicago to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Chicago with our price prediction graph.

Estimated round-trip price

Temperature and rainfall in San Francisco by month

SFO Temperature	51.8 - 62.6 °F

SFO

Temperature

51.8 - 62.6 °F

If weather is an important factor for your trip to San Francisco, 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).

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Fly from Chicago to San Francisco on another airline
Consider alternative airlines that service the San Francisco area. Flight routes are based on user searches made on Cheapflights and were last updated on mayo 30, 2024.

American Airlines flights from Chicago to San Francisco

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Other Frontier flights from Chicago
Browse through other Frontier flights departing from Chicago. Flight routes are based on user searches made on Cheapflights and were last updated on mayo 30, 2024.

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Frontier flights from Chicago to Denver

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Frontier flights from Chicago to San Francisco

Frontier flights from Chicago to Orlando

Frontier flights from Chicago to San Francisco

Frontier flights from Chicago to Luis Munoz Marin Intl

Frontier flights from Chicago to Miami

Frontier flights from Chicago to Tampa

Frontier flights from Chicago to Fort Lauderdale

Frontier flights from Chicago to Punta Cana

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

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Other popular destinations in North America
If San Francisco is not for you, choose from these other destinations located in North America. Flight routes are based on user searches made on Cheapflights and were last updated on mayo 30, 2024.

Flights to New York

Flights to Los Angeles

Flights to San Francisco

Flights to Fort Lauderdale

Popular flights with Frontier
Browse through some of the most popular routes that Frontier offers at this time. Flights are based on user searches made on Cheapflights and were last updated on mayo 30, 2024.

Frontier flights from San Francisco to Chicago

Frontier flights from Chicago to Las Vegas

Frontier flights from Chicago to Orlando

Frontier flights from Chicago to Luis Munoz Marin Intl

Frontier flights from Chicago to Denver

Frontier flights from Chicago to Las Vegas

Frontier flights from Chicago to Sky Harbor Intl

Frontier flights from Chicago to Tampa

Frontier flights from Chicago to Orlando

Frontier flights from Chicago to Las Vegas

Frontier flights from Chicago to Denver

Frontier flights from Chicago to Luis Munoz Marin Intl

Frontier flights from Chicago to Sky Harbor Intl

Frontier flights from Chicago to Las Vegas

Frontier flights from Chicago to Denver

Frontier flights from Chicago to Miami

Frontier flights from Chicago to Atlanta

Frontier flights from Chicago to Las Vegas

Frontier flights from Chicago to Luis Munoz Marin Intl

Frontier flights from Chicago to Denver

Frontier flights from Chicago to Miami

Frontier flights from Chicago to Tampa

Frontier flights from Chicago to Dallas/Fort Worth

Frontier flights from Chicago to Las Vegas

Frontier flights from Chicago to Luis Munoz Marin Intl

Frontier flights from Chicago to Orlando

Frontier flights from Chicago to Sky Harbor Intl

Frontier flights from Chicago to Orlando

See what others are saying about Frontier

Frontier

6.2

Okay

4,016 reviews

Check prices

Overview

Recent reviews

2.0

Poor|Jan 2022

I never even booked this flight

10.0

Wonderful|Mar 2018

price was right

maybe a little cramped

10.0

Wonderful|Jan 2022

Left on time, arrived early, easy boarding process, comfortable seats for a short flight. Can't beat the price.

8.0

Very good|Jun 2023

Better seat cushions... Staff was awesome

6.0

Okay|Mar 2022

We paid $47 to check one carefully packed 50 lb bag on the way. Our return trip, they charged $65 for the base fee and only then chose to inform us that we would be required to pay an extra ONE HUNDRED DOLLARS - total of $165 one way! A because, since our departure, they had reduced the permissible weight to 40 lbs. ONE HUNDRED ADDITIONAL DOLLARS FOR LESS THAN TEN POUNDS WHEN WE WERE TOLD 50 LBS WAS THE LIMIT. I know their fares are cheap but my lord, their seats are tiny, they nickel and dime EVERYTHING, and they legit steal from you by changing the rules and price-gouging. Gross. I’ll pay more on the front end next time, because at those prices I could’ve flown a non-budget airline and been comfortable and had a damn complimentary water.

1 out of 1339

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Cheapflights users flying from Chicago to San Francisco on Frontier typically fly into San Francisco and depart from Chicago O'Hare Intl. Select your dates above for pricing.

Frontier flights from Chicago to San Francisco in 2024

Find detailed information about Frontier flights from Chicago to San Francisco. Explore the options provided by Frontier to plan your journey from Chicago to San Francisco. Data last updated mayo 30, 2024.

Popular in

Cheapest in

Average price (all airlines)

One-way from

Round-trip from

Can I get a flight from Chicago to San Francisco on Frontier for under $300?

How do most travelers feel about Frontier?

Cheapest Frontier flights from Chicago to San Francisco

Direct flights from Chicago to San Francisco on Frontier

Last minute deals on Cheapflights

One-way Frontier flights to San Francisco from Chicago

Best time to book a flight from Chicago to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Chicago with our price prediction graph.

Temperature and rainfall in San Francisco by month

Plan your trip to San Francisco by taking into account the average temperature and rainfall totals by month.

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.

Fly from Chicago to San Francisco on another airline
Consider alternative airlines that service the San Francisco area. Flight routes are based on user searches made on Cheapflights and were last updated on mayo 30, 2024.

Consider alternative airlines that service the San Francisco area. Flight routes are based on user searches made on Cheapflights and were last updated on mayo 30, 2024.

Other Frontier flights from Chicago
Browse through other Frontier flights departing from Chicago. Flight routes are based on user searches made on Cheapflights and were last updated on mayo 30, 2024.

Browse through other Frontier flights departing from Chicago. Flight routes are based on user searches made on Cheapflights and were last updated on mayo 30, 2024.

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

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

Other airlines servicing Chicago and San Francisco
Choose from other airlines serving Chicago and San Francisco.

Choose from other airlines serving Chicago and San Francisco.

Other popular destinations in North America
If San Francisco is not for you, choose from these other destinations located in North America. Flight routes are based on user searches made on Cheapflights and were last updated on mayo 30, 2024.

If San Francisco is not for you, choose from these other destinations located in North America. Flight routes are based on user searches made on Cheapflights and were last updated on mayo 30, 2024.

Popular flights with Frontier
Browse through some of the most popular routes that Frontier offers at this time. Flights are based on user searches made on Cheapflights and were last updated on mayo 30, 2024.

Browse through some of the most popular routes that Frontier offers at this time. Flights are based on user searches made on Cheapflights and were last updated on mayo 30, 2024.

See what others are saying about Frontier

Overview

Recent reviews

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Flights

Frontier flights from Chicago to San Francisco (CHI - SFO)

Cheapflights users flying from Chicago to San Francisco on Frontier typically fly into San Francisco and depart from Chicago O'Hare Intl. Select your dates above for pricing.

Frontier flights from Chicago to San Francisco in 2024

Find detailed information about Frontier flights from Chicago to San Francisco. Explore the options provided by Frontier to plan your journey from Chicago to San Francisco. Data last updated mayo 30, 2024.

Popular in

Cheapest in

Average price (all airlines)

One-way from

Round-trip from

Can I get a flight from Chicago to San Francisco on Frontier for under $300?

How do most travelers feel about Frontier?

Cheapest Frontier flights from Chicago to San Francisco

Direct flights from Chicago to San Francisco on Frontier

Last minute deals on Cheapflights

One-way Frontier flights to San Francisco from Chicago

Best time to book a flight from Chicago to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Chicago with our price prediction graph.

Temperature and rainfall in San Francisco by month

Plan your trip to San Francisco by taking into account the average temperature and rainfall totals by month.

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.

Fly from Chicago to San Francisco on another airlineConsider alternative airlines that service the San Francisco area. Flight routes are based on user searches made on Cheapflights and were last updated on mayo 30, 2024.

Consider alternative airlines that service the San Francisco area. Flight routes are based on user searches made on Cheapflights and were last updated on mayo 30, 2024.

See what others are saying about Frontier

Overview

100% Free

Book with Flexibility

Travel Smart

Fly from Chicago to San Francisco on another airline
Consider alternative airlines that service the San Francisco area. Flight routes are based on user searches made on Cheapflights and were last updated on mayo 30, 2024.