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$99+ Cheap flights from Chicago (CHI) to San Francisco (SFO)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/1. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — SFO
Aug 19 — Aug 261
Tue 8/19
Tue 8/26
1 adult, Economy
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Cheapflights Tip: The best prices from Chicago to San Francisco are usually found in September or July, booked 83 days in advance, depart on a Thursday or Friday and return on a Wednesday

Cheap flight deals from Chicago to San Francisco

Discover tips and strategies to find the most affordable flight options for your journey from Chicago (CHI) to San Francisco (SFO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated August 14, 2025.

Round-trip from

$198
(Frontier)

One-way from

$99
(Southwest)

Popular in

December

Cheapest in

September

Average price

$317

Good round-trip deal

$197 or less

Good one-way deal

$108 or less
From Chicago (CHI) to San Francisco
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One-way flight from Chicago (CHI) to San Francisco
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Highest demand for flights based on searches. 7% potential increase in price ($26 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Price to beat on a round-trip flight from Chicago (CHI) to San Francisco.
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Price to beat on a one-way flight from Chicago (CHI) to San Francisco.
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Find flight deals from Chicago to San Francisco

Cheapest flights from Chicago to San Francisco
Explore the most affordable flight options available from Chicago to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.

This Frontier deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/166:24 pmMDW - SFO
1 stop7h 50mFrontier
Sun 10/198:27 pmSFO - MDW
2 stops12h 46mFrontier
Deal found 8/13$198
This American Airlines deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/316:45 amORD - SFO
Nonstop4h 30mAmerican Airlines
Fri 9/51:21 pmSFO - ORD
Nonstop4h 24mAmerican Airlines
Deal found 8/12$198
This American Airlines deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/66:45 amORD - SFO
Nonstop4h 39mAmerican Airlines
Sat 9/131:21 pmSFO - ORD
Nonstop4h 24mAmerican Airlines
Deal found 8/14$199
This Frontier deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/193:48 pmMDW - SFO
2 stops10h 27mFrontier
Sun 9/2111:57 pmSFO - MDW
1 stop11h 14mFrontier
Deal found 8/13$200
This Kiwi.com deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/219:45 pmORD - SFO
1 stop17h 30mFrontier
Mon 8/2510:29 pmSFO - ORD
1 stop13h 04mFrontier
Deal found 8/13$200
This Frontier deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1810:13 amMDW - SFO
2 stops15h 02mFrontier
Mon 9/226:29 amSFO - MDW
1 stop7h 24mFrontier
Deal found 8/14$201
This Frontier deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/187:05 amORD - SFO
2 stops12h 59mFrontier
Fri 10/2410:23 pmSFO - ORD
1 stop11h 12mFrontier
Deal found 8/14$201
This Frontier deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/256:31 pmMDW - SFO
1 stop7h 48mFrontier
Thu 9/411:57 pmSFO - MDW
1 stop11h 14mFrontier
Deal found 8/13$202
This Kiwi.com deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/148:20 amORD - SFO
1 stop7h 41mMultiple Airlines
Sun 10/191:29 pmSFO - ORD
1 stop6h 55mMultiple Airlines
Deal found 8/14$202
This Frontier deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/176:44 pmORD - SFO
2 stops16h 00mFrontier
Sun 9/2111:00 pmSFO - ORD
1 stop9h 31mFrontier
Deal found 8/14$203
This Alaska Airlines deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/147:59 pmORD - SFO
1 stop20h 02mAlaska Airlines
Tue 10/2110:26 amSFO - ORD
1 stop11h 33mAlaska Airlines
Deal found 8/14$204
This Frontier deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/154:48 pmMDW - SFO
1 stop9h 28mFrontier
Thu 9/185:45 amSFO - MDW
2 stops14h 13mFrontier
Deal found 8/14$205

Cheapflights Fare Finder

 
Customize your flight search to find flights from Chicago to San Francisco that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 14, 2025.
Use the filters below to find and compare flights from Chicago to San Francisco that are best for you.

Fly from

Chicago

Fly to

San Francisco

Route

Depart

Return

Price

ChicagoSan Francisco

MDW - SFO

MDWSFO

Chicago Midway

Thu 10/23

6:24 pm-12:14 am

1 stop7h 50m

San Francisco

Sun 10/26

8:27 pm-11:13 am

2 stops12h 46m

$198

ChicagoSan Francisco

MDW - SFO

MDWSFO

Chicago Midway

Fri 10/31

9:15 am-11:50 am

Nonstop4h 35m

San Francisco

Tue 11/4

5:50 am-3:55 pm

1 stop8h 05m

$198

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Thu 9/11

7:55 am-1:22 pm

1 stop7h 27m

San Francisco

Fri 9/19

11:00 pm-11:27 am

1 stop10h 27m

$199

ChicagoSan Francisco

MDW - SFO

MDWSFO

Chicago Midway

Thu 9/18

10:13 am-11:15 pm

2 stops15h 02m

San Francisco

Mon 9/22

6:29 am-3:53 pm

1 stop7h 24m

$201

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Tue 10/14

7:59 pm-2:01 pm

1 stop20h 02m

San Francisco

Tue 10/21

10:26 am-11:59 pm

1 stop11h 33m

$204

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Tue 10/14

3:50 pm-2:01 pm

1 stop24h 11m

San Francisco

Wed 10/22

10:26 am-11:59 pm

1 stop11h 33m

$204

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Wed 10/8

7:59 pm-8:05 am

1 stop14h 06m

San Francisco

Tue 10/14

10:26 am-11:59 pm

1 stop11h 33m

$204

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Tue 10/28

2:54 pm-10:01 pm

1 stop9h 07m

San Francisco

Tue 11/11

7:00 am-11:59 pm

1 stop14h 59m

$204

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Tue 10/7

8:20 am-2:01 pm

1 stop7h 41m

San Francisco

Tue 10/21

10:26 am-11:59 pm

1 stop11h 33m

$204

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Sat 11/8

2:54 pm-9:55 pm

1 stop9h 01m

San Francisco

Wed 11/12

7:00 am-6:59 pm

1 stop9h 59m

$204

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/12

Showing 1-10 of 36 results
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The best insider tips for Chicago to San Francisco flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Chicago to San Francisco trip
Airlines
United Airlines

United's Polaris Lounges offer showers, daybeds, and dining for premium passengers.


Basic Economy on United allows a personal item but no carry-on bags.

Read more about United Airlinesby Harriet Baskas
Alaska Airlines

Alaska's Premium Class offers extra legroom and free cocktails, but no divider from Main Cabin.


Alaska's Wi-Fi is a flat fee, ideal for business travelers to stay productive.

Read more about Alaska Airlinesby Robert Schrader
Airports
ORD

For a quick snack before your flight, grab some Garrett Popcorn near gate B8, a Chicago favorite.

Read more about ORDby Ramsey Qubein
SFO

Travel from SFO to downtown San Francisco via BART. It's the least expensive option and takes about 40 minutes.

Read more about SFOby Harriet Baskas
Our travel experts
Harriet Baskas

Harriet Baskas

Expert on United Airlines and SFO

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more
Robert Schrader

Robert Schrader

Expert on Alaska Airlines

Robert Schrader

Robert Schrader

One of the web's original travel bloggers, Robert launched his first site Leave Your Daily Hell in 2009. Since then, he's expanded into destination niche sites (one each for Japan, Thailand and Taiwan), in addition to having written for the inflight magazines of Singapore Airlines and Korean Air. Overall, he's visited nearly 100 countries, and flies business as often as possible.

Read more
Ramsey Qubein

Ramsey Qubein

Expert on ORD

Ramsey Qubein

Ramsey Qubein

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more

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
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Chicago to San Francisco

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

Use this chart to determine the optimal time to book a round-trip flight from Chicago to San Francisco. Price data was last updated on August 8, 2025.

To ensure you get the cheapest price possible for a flight from Chicago to San Francisco, you should look to book at least 83 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, January is the cheapest month in which you can book a flight from Chicago to San Francisco (average of $276). Flying from Chicago to San Francisco in June is currently the most expensive (average of $358). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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

Find hourly flight availability from Chicago to San Francisco. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 14, 2025.

It’s optimal to fly from Chicago to San Francisco in the evening. By choosing this option you can save up to 17% on the cost of your flight, compared to a flight in the afternoon.

What is the cheapest day to fly from Chicago to San Francisco?

Use this chart to determine the cheapest time to fly round-trip from Chicago to San Francisco. Price data was last updated on August 10, 2025.

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

Weekly flight availability from Chicago to San Francisco

Explore weekly flight availability from Chicago to San Francisco. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated August 14, 2025.

The most flights from CHI to SFO are scheduled on a Monday (100 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (56 on average).

What’s the top layover airport for flights from Chicago to San Francisco?

Share of 1-stop round-trip flights from Chicago to San Francisco chosen by Cheapflights users in the past 12 months, using the same layover each way.

Denver (DEN) – chosen by Cheapflights users on 71% of 1-stop itineraries from Chicago to San Francisco on Cheapflights.

What’s the cheapest layover airport for flights from Chicago to San Francisco?

Average round-trip fare for 1-stop flights from Chicago to San Francisco, chosen by Cheapflights users in the past 12 months, with the same layover each way.

Atlanta (ATL) is the most affordable 1-stop option, with an average round-trip price of $177.

What’s the fastest layover option from Chicago to San Francisco?

Shortest average travel time for 1-stop one-way flights from Chicago to San Francisco, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via Denver (DEN) have the shortest average one-way travel time for 1-stop routes: 7h 24m.

Which airport typically offers the quickest layover for flights from Chicago to San Francisco?

Average layover duration for 1-stop one-way flights from Chicago to San Francisco, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Seattle (SEA) offer the fastest connection on this route, with an average layover time of 1h 40m.

Reviews of airlines servicing San Francisco

Get insights into the airlines that provide service to San Francisco. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Francisco. Reviews last updated August 14, 2025.
Read reviews from past customers who have flown Alaska Airlines, Southwest, and United Airlines from Chicago to San Francisco. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.0

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

BOI - LAX

flying in first class, my husband froze the entire flight and was miserable. first class does not offer blankets or any entertainment. (TV etc)
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.0

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

BOI - LAX

flying in first class, my husband froze the entire flight and was miserable. first class does not offer blankets or any entertainment. (TV etc)
Southwest
8.0
Very good
4,244 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.0

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

BOI - LAX

flying in first class, my husband froze the entire flight and was miserable. first class does not offer blankets or any entertainment. (TV etc)
United Airlines
7.4
Good
8,916 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.0

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

BOI - LAX

flying in first class, my husband froze the entire flight and was miserable. first class does not offer blankets or any entertainment. (TV etc)
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.0

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

BOI - LAX

flying in first class, my husband froze the entire flight and was miserable. first class does not offer blankets or any entertainment. (TV etc)
Frontier
5.8
Fair
3,219 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.0

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

BOI - LAX

flying in first class, my husband froze the entire flight and was miserable. first class does not offer blankets or any entertainment. (TV etc)

Chicago to San Francisco Travel Guide

Dozens of flights are waiting to carry you from the freeways and skyscrapers of Chicago to the fishing piers and historic neighborhoods of San Francisco. A major metropolis along the California coastline, the Bay Area is famous for its maritime atmosphere and architectural marvels such as the Ferry Building Marketplace and the Legion of Honor. Browse direct flights between these two major travel hubs to find a cheap flight to match your travel schedule.

The moment you leave the Windy City behind and step onto the hilly streets San Francisco, the historic Bay Area instantly transports you to a world of cable cars and charming wharfs. Trade the trains of Chicago for the ferries and whale-watching bay cruises of this California city, and enjoy milder winter months with temperatures hovering in the 60's F. Before saying goodbye to the Golden Gate Bridge, don't forget to tour Alcatraz Island and enjoy the catch of the day at one of the bay-side seafood shacks.

The Golden Gate Bridge is just a short flight away, so what's stopping you? Try out our smart search engine to find great flight deals and start planning your San Francisco adventure.

Related info for your journey

Find useful and relevant information for your journey from Chicago to San Francisco. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Chicago to San Francisco?

    Flights times from Chicago to San Francisco usually range from four hours and 15 minutes to four and a half hours. If you have a connection in another city, total travel time may be upwards of six hours.

  • Which airlines operate flights from Chicago to San Francisco?

    American Airlines, United, Virgin America and Alaska Airlines all offer non-stop service from Chicago O'Hare International Airport, and you can find direct flights from Midway International Airport through Southwest Airlines.

  • How frequent are flights between Chicago and San Francisco?

    Upwards of 20 direct flights to San Francisco leave from Chicago O'Hare per day, with planes departing every hour or so. From Midway, You can choose from around 3 flights leaving each day.

  • Which airports serve Chicago and San Francisco?

    Chicago O'Hare International Airport is the largest and busiest airport in the Chicago metro area as well as a major U.S. travel hub, offering daily flights to San Francisco through multiple airlines. Chicago Midway International Airport is a smaller airport that also offers a few flights to the Bay Area, though you have a smaller selection of flight times and prices. When your plane lands in San Francisco, you find yourself in San Francisco International Airport, the area's major airport located a few miles south of the central city area.

  • Which direct flight route between Chicago and San Francisco is cheapest?

    Find the lowest prices on direct flights running from Chicago O'Hare International Airport to San Francisco International Airport. You can also occasionally snag a great deal taking off from Midway International Airport, so be sure to keep your options open while searching.

  • What airport do you fly into for flights to San Francisco from Chicago?

    Located just 11.8 mi from the city center, San Francisco is the airport most travelers will use when flying to San Francisco from Chicago. Booking flights from Chicago to San Francisco (SFO) should be relatively easy as there are 83 daily inbound flights from Chicago from 7 different airlines.

  • What are the cheapest airlines flying from Chicago to San Francisco round-trip?

    Flying on Hawaiian Airlines is currently your cheapest option to San Francisco, with prices starting at $108. Additional round-trip tickets that might be worth considering are offered by Frontier and Delta, with the lowest prices starting at $118 and $128, respectively. Users have found that Hawaiian Airlines is 65% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Chicago to San Francisco one-way?

    $99 is the cheapest one-way deal found within the past few days, from Southwest. You may also be able to find cheap deals on United Airlines and American Airlines, with prices starting from $99 and $100, respectively.

  • What are the most reliable airlines from Chicago to San Francisco?

    Before booking your flight to San Francisco from Chicago, check out the most reliable airlines to get you to your destination on time: ANA (82%), Air China (79%), Austrian Airlines( 78%).

  • What are the cheapest flights from Chicago to San Francisco?

    While on average a flight from Chicago to San Francisco is generally $779, our data shows the cheapest flight currently is $98. When looking at the most popular route, (Chicago O'Hare Intl - San Francisco), you can expect to pay $184 for that flight.

  • Can I find deals for flights from Chicago to San Francisco that include hotel bookings?

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

  • How can I find direct flights from Chicago to San Francisco?

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

  • Can I find deals for business class flights from Chicago to San Francisco?

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

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

    Currently, January is the cheapest month in which you can book a flight from Chicago to San Francisco (average of $276). Flying from Chicago to San Francisco in June is currently the most expensive (average of $358). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Roseville
Santa Cruz
Livermore
South San Francisco
Mountain View
Turlock
Santa Clara
Hollister
Antioch
Watsonville
Manteca
Sunnyvale
Newark
Milpitas
Campbell
Foster City
San Leandro
Burlingame
Redwood City
Vallejo

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 San Francisco

See prices for flight routes from nearby airports that may be better suited for you.
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Top 7 airlines flying from Chicago to San Francisco

Discover the top 7 airlines that operate flights from Chicago to San Francisco. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
Hawaiian AirlinesCheapest$108Average$217FlexibilityNo cancel feeOn-time85%
FrontierCheapest$118Average$260FlexibilityNo cancel feeOn-time62%
DeltaCheapest$128Average$316FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$141Average$359FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$180Average$371FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$187Average$286FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$197Average$303FlexibilityNo cancel feeOn-time71%

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