HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
San Francisco

$271+ Cheap flights from Champaign to San Francisco (CMI - 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 5/3. Fares are subject to change and may not be available on all flights or dates of travel.
CMI — SFO
Apr 2 — Apr 91
Thu 4/2
Thu 4/9
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Champaign to San Francisco with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Champaign to San Francisco

Cheapest flights from Champaign to San Francisco
Explore the most affordable flight options available from Champaign to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 3, 2026.

This United Airlines deal was found by Cheapflights users on 2/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/56:00 am
CMI
-
SFO
1 stop9h 25m
United Airlines
Sat 5/910:55 pm
SFO
-
CMI
1 stop8h 11m
United Airlines
Deal found 2/26$298
This American Airlines deal was found by Cheapflights users on 2/26. 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.
Tue 5/52:38 pm
CMI
-
SFO
1 stop21h 14m
American Airlines
Sat 5/95:30 am
SFO
-
CMI
1 stop10h 54m
American Airlines
Deal found 2/26$334
This United Airlines deal was found by Cheapflights users on 3/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/271:32 pm
CMI
-
SFO
1 stop7h 41m
United Airlines
Sat 10/3110:50 pm
SFO
-
CMI
1 stop9h 04m
United Airlines
Deal found 3/1$388
This American Airlines deal was found by Cheapflights users on 2/26. 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.
Thu 3/192:54 pm
CMI
-
SFO
1 stop10h 22m
American Airlines
Wed 4/16:00 am
SFO
-
CMI
1 stop6h 24m
American Airlines
Deal found 2/26$398
This United Airlines deal was found by Cheapflights users on 2/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/197:33 pm
CMI
-
SFO
1 stop7h 17m
United Airlines
Tue 5/2610:38 pm
SFO
-
CMI
1 stop8h 16m
United Airlines
Deal found 2/28$413
This American Airlines deal was found by Cheapflights users on 3/1. 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.
Wed 4/292:38 pm
CMI
-
SFO
1 stop11h 21m
American Airlines
Sun 5/35:30 am
SFO
-
CMI
1 stop10h 58m
American Airlines
Deal found 3/1$422
This American Airlines deal was found by Cheapflights users on 2/28. 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.
Thu 4/96:58 pm
CMI
-
SFO
1 stop18h 04m
American Airlines
Mon 4/135:30 am
SFO
-
CMI
1 stop10h 58m
American Airlines
Deal found 2/28$442
This American Airlines deal was found by Cheapflights users on 2/26. 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.
Mon 7/136:32 pm
CMI
-
SFO
1 stop18h 49m
American Airlines
Fri 8/1411:10 pm
SFO
-
CMI
1 stop9h 44m
American Airlines
Deal found 2/26$481

Find flight deals from Champaign to San Francisco

Discover tips and strategies to find the most affordable flight options for your journey from Champaign (CMI) 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 March 3, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$298
(United Airlines)

One-way from

$271
(American Airlines)

Popular in

November

Cheapest in

September

Average price

$452
Provider with most accurate pricing for Champaign University-Willard-San Francisco flight deals.
Search Deals
Provider most trusted by Cheapflights users for Champaign University-Willard-San Francisco flights.
Search Deals
From Champaign University-Willard to San Francisco
Search Deals
One-way flight from Champaign University-Willard to San Francisco
Search Deals
Highest demand for flights based on searches. 21% potential increase in price ($150 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($28 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Champaign 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 March 3, 2026.
Use the filters below to find and compare flights from Champaign to San Francisco that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChampaignSan Francisco

CMI - SFO

CMISFO

Champaign University-Willard

Thu 5/7

7:33 pm-12:50 am

1 stop7h 17m

San Francisco

Sun 5/10

12:45 am-9:06 am

1 stop6h 21m

$298

ChampaignSan Francisco

CMI - SFO

CMISFO

Champaign University-Willard

Tue 5/5

6:00 am-1:25 pm

1 stop9h 25m

San Francisco

Sat 5/9

10:55 pm-9:06 am

1 stop8h 11m

$298

ChampaignSan Francisco

CMI - SFO

CMISFO

Champaign University-Willard

Mon 5/11

7:18 pm-1:35 am

1 stop8h 17m

San Francisco

Thu 5/21

11:30 pm-8:54 am

1 stop7h 24m

$388

ChampaignSan Francisco

CMI - SFO

CMISFO

Champaign University-Willard

Tue 5/19

7:33 pm-12:50 am

1 stop7h 17m

San Francisco

Tue 5/26

10:38 pm-8:54 am

1 stop8h 16m

$388

ChampaignSan Francisco

CMI - SFO

CMISFO

Champaign University-Willard

Wed 4/29

2:38 pm-11:59 pm

1 stop11h 21m

San Francisco

Sun 5/3

11:28 pm-6:28 pm

1 stop17h 00m

$422

ChampaignSan Francisco

CMI - SFO

CMISFO

Champaign University-Willard

Thu 4/9

6:58 pm-11:02 am

1 stop18h 04m

San Francisco

Mon 4/13

5:30 am-6:28 pm

1 stop10h 58m

$442

ChampaignSan Francisco

CMI - SFO

CMISFO

Champaign University-Willard

Wed 3/11

2:54 pm-10:01 pm

1 stop9h 07m

$293

ChampaignSan Francisco

CMI - SFO

CMISFO

Champaign University-Willard

Sun 5/3

7:33 pm-7:10 am

2 stops13h 37m

$312

ChampaignSan Francisco

CMI - SFO

CMISFO

Champaign University-Willard

Sun 5/3

2:38 pm-11:51 pm

2 stops11h 13m

$369

ChampaignSan Francisco

CMI - SFO

CMISFO

Champaign University-Willard

Sun 5/17

7:33 pm-12:50 am

1 stop7h 17m

$374

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/2

Showing 1-10 of 13 resultsSorted by cheapest first
1
2

Compare providers for flights from Champaign to San Francisco

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Champaign to San Francisco in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Champaign-San Francisco flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Champaign-San Francisco flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Champaign-San Francisco flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Champaign-San Francisco flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Champaign-San Francisco flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Champaign to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Champaign 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 Champaign to San Francisco

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

Currently, December is the cheapest month in which you can book a flight from Champaign to San Francisco (average of $228). Flying from Champaign to San Francisco in April is currently the most expensive (average of $376). 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.

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 March 3, 2026.
Get a feel of what it's like to fly with American Airlines from Champaign to San Francisco by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.1
Good
11,375 reviews

Entertainment

6.9

Food

6.4

Overall

7.1

Boarding

7.5

Comfort

7.2

Crew

8.0

Reviews

1 / 20
8.0
Excellent

Diana,Jul 2024

ORD - IND

Shout out to Isabelle and Debbie who went above and beyond to make it a good experience. Wheelchair service and workers were excellent and much appreciated.
American Airlines
7.1
Good
11,375 reviews
American Airlines
7.1
Good
11,375 reviews

Entertainment

6.9

Food

6.4

Overall

7.1

Boarding

7.5

Comfort

7.2

Crew

8.0

Reviews

1 / 20
8.0
Excellent

Diana,Jul 2024

ORD - IND

Shout out to Isabelle and Debbie who went above and beyond to make it a good experience. Wheelchair service and workers were excellent and much appreciated.

Related info for your journey

Find useful and relevant information for your journey from Champaign 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 Champaign to San Francisco?

    A quick flight from Champaign to San Francisco can take about 7h 17m. United Airlines provides one of the quickest options available for as low as $298. The distance from Champaign to San Francisco is about 1831 mi.

  • What is the cheapest airline to fly from Champaign to San Francisco round-trip?

    American Airlines, at $378, was found to be the cheapest airline from Champaign to San Francisco.. Users have found that American Airlines is 30% cheaper than the other options available to this destination.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Champaign 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 Champaign to San Francisco?

    Currently, December is the cheapest month in which you can book a flight from Champaign to San Francisco (average of $228). Flying from Champaign to San Francisco in April is currently the most expensive (average of $376). 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
South San Francisco
Santa Cruz
Santa Clara
Livermore
Roseville
Watsonville
San Bruno
Daly City
Sunnyvale
Vacaville
Turlock
San Carlos
San Ramon
Redwood City
Rancho Cordova
San Lorenzo
Davis
Hollister
Manteca
Union City

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 Champaign to San Francisco

See prices for flight routes from nearby airports that may be better suited for you.
O'Hare Intl to Las Vegas flights
O'Hare Intl to Los Angeles flights
O'Hare Intl to San Francisco flights
O'Hare Intl to San Diego flights
Midway to Las Vegas flights
O'Hare Intl to Ontario flights
St. Louis to Las Vegas flights
Midway to Los Angeles flights
O'Hare Intl to Santa Ana flights
O'Hare Intl to Palm Springs flights
O'Hare Intl to Reno flights
Midway to San Diego flights
St. Louis to Los Angeles flights
Midway to San Francisco flights
O'Hare Intl to San Jose flights
Rockford to Las Vegas flights
O'Hare Intl to Sacramento flights
O'Hare Intl to Burbank flights
St. Louis to San Francisco flights
O'Hare Intl to Oakland flights
St. Louis to San Diego flights
Midway to Reno flights
St. Louis to Ontario flights
Midway to Palm Springs flights
O'Hare Intl to Santa Barbara flights
Midway to San Jose flights
St. Louis to Sacramento flights
Moline to Las Vegas flights
O'Hare Intl to Fresno flights
Midway to Sacramento flights
Midway to Oakland flights
St. Louis to Reno flights
O'Hare Intl to Long Beach flights
St. Louis to Santa Ana flights
St. Louis to San Jose flights
Midway to Ontario flights
Moline to Los Angeles flights
Peoria to Las Vegas flights
O'Hare Intl to Monterey flights
St. Louis to Oakland flights
Midway to Long Beach flights
Peoria to Los Angeles flights
St. Louis to Long Beach flights
St. Louis to Burbank flights
Bloomington to Las Vegas flights
Evansville to Las Vegas flights
Springfield to Las Vegas flights

Top airline flying from Champaign to San Francisco

Discover the top airline that operate flights from Champaign 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 March 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$378Average$498FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
Site
©2026 Cheapflights