$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 5/19. Fares are subject to change and may not be available on all flights or dates of travel.
CMI — SFO
May 2 — May 91
Round-trip
1 adult, Economy
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Find cheap flights from Champaign to San Francisco with Cheapflights
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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
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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
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Best
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Cheapest flights from Champaign to San FranciscoExplore 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 April 2, 2026.
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 April 2, 2026.
This United Airlines deal was found by Cheapflights users on 3/31. 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.
Thu 8/201:32 pm
CMI
- SFO
1 stop7h 40m
United Airlines
Sun 8/2311:30 pm
SFO
- CMI
1 stop7h 24m
United Airlines
Deal found 3/31![United Airlines logo]()
$358
This American Airlines deal was found by Cheapflights users on 3/31. 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 8/2011:24 am
CMI
- SFO
2 stops10h 37m
American Airlines
Mon 8/245:30 am
SFO
- CMI
1 stop6h 49m
American Airlines
Deal found 3/31![American Airlines logo]()
$364
This American Airlines deal was found by Cheapflights users on 4/1. 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.
Thu 6/46:44 pm
CMI
- SFO
1 stop7h 03m
American Airlines
Wed 6/105:23 am
SFO
- CMI
1 stop6h 52m
American Airlines
Deal found 4/1![American Airlines logo]()
$379
This American Airlines deal was found by Cheapflights users on 4/1. 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.
Thu 4/166:58 pm
CMI
- SFO
1 stop7h 01m
American Airlines
Mon 4/205:30 am
SFO
- CMI
1 stop6h 38m
American Airlines
Deal found 4/1![American Airlines logo]()
$408
This American Airlines deal was found by Cheapflights users on 4/2. 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.
Fri 4/176:58 pm
CMI
- SFO
1 stop7h 01m
American Airlines
Tue 4/217:10 am
SFO
- CMI
2 stops11h 57m
American Airlines
Deal found 4/2![American Airlines logo]()
$414
This American Airlines deal was found by Cheapflights users on 3/29. 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 5/196:55 pm
CMI
- SFO
1 stop7h 04m
American Airlines
Wed 5/275:23 am
SFO
- CMI
1 stop6h 52m
American Airlines
Deal found 3/29![American Airlines logo]()
$428
This American Airlines deal was found by Cheapflights users on 3/31. 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 5/216:39 pm
CMI
- SFO
1 stop7h 08m
American Airlines
Tue 5/2611:14 pm
SFO
- CMI
1 stop9h 53m
American Airlines
Deal found 3/31![American Airlines logo]()
$433
Best flights from Champaign to San FranciscoDiscover carefully curated flight deals from Champaign to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 2, 2026.
Discover carefully curated flight deals from Champaign to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 2, 2026.
This United Airlines deal was found by Cheapflights users on 3/31. 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.
Thu 8/201:32 pm
CMI
- SFO
1 stop7h 40m
United Airlines
Sun 8/2311:30 pm
SFO
- CMI
1 stop7h 24m
United Airlines
Deal found 3/31![United Airlines logo]()
$358
This American Airlines deal was found by Cheapflights users on 4/1. 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.
Thu 4/166:58 pm
CMI
- SFO
1 stop7h 01m
American Airlines
Mon 4/205:30 am
SFO
- CMI
1 stop6h 38m
American Airlines
Deal found 4/1![American Airlines logo]()
$408
This United Airlines deal was found by Cheapflights users on 3/31. 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.
Thu 8/205:45 am
CMI
- SFO
1 stop6h 41m
United Airlines
Mon 8/2410:35 pm
SFO
- CMI
1 stop8h 19m
United Airlines
Deal found 3/31![United Airlines logo]()
$358
This American Airlines deal was found by Cheapflights users on 4/2. 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.
Fri 4/176:58 pm
CMI
- SFO
1 stop7h 01m
American Airlines
Tue 4/217:21 am
SFO
- CMI
1 stop9h 07m
American Airlines
Deal found 4/2![American Airlines logo]()
$408
This American Airlines deal was found by Cheapflights users on 3/30. 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 6/46:44 pm
CMI
- SFO
1 stop7h 03m
American Airlines
Wed 6/1012:36 pm
SFO
- CMI
1 stop7h 25m
American Airlines
Deal found 3/30![American Airlines logo]()
$428
This United Airlines deal was found by Cheapflights users on 3/31. 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.
Fri 7/177:34 pm
CMI
- SFO
1 stop6h 58m
United Airlines
Sun 7/1911:30 pm
SFO
- CMI
1 stop7h 24m
United Airlines
Deal found 3/31![United Airlines logo]()
$434
This American Airlines deal was found by Cheapflights users on 3/29. 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 5/196:55 pm
CMI
- SFO
1 stop7h 04m
American Airlines
Wed 5/275:23 am
SFO
- CMI
1 stop6h 52m
American Airlines
Deal found 3/29![American Airlines logo]()
$428
This American Airlines deal was found by Cheapflights users on 3/31. 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 5/216:39 pm
CMI
- SFO
1 stop7h 08m
American Airlines
Tue 5/2611:14 pm
SFO
- CMI
1 stop9h 53m
American Airlines
Deal found 3/31![American Airlines logo]()
$433
Last-minute flights from Champaign to San FranciscoDiscover last-minute flight deals from Champaign to San Francisco. Data last updated April 2, 2026 and is based on user searches.
Discover last-minute flight deals from Champaign to San Francisco. Data last updated April 2, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 4/1. 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.
Thu 4/166:58 pm
CMI
- SFO
1 stop7h 01m
American Airlines
Mon 4/205:30 am
SFO
- CMI
1 stop6h 38m
American Airlines
Deal found 4/1![American Airlines logo]()
$408
This American Airlines deal was found by Cheapflights users on 4/2. 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.
Fri 4/176:58 pm
CMI
- SFO
1 stop7h 01m
American Airlines
Tue 4/217:10 am
SFO
- CMI
2 stops11h 57m
American Airlines
Deal found 4/2![American Airlines logo]()
$414
This American Airlines deal was found by Cheapflights users on 3/30. 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 5/186:55 pm
CMI
- SFO
1 stop16h 57m
American Airlines
Sat 5/2311:14 pm
SFO
- CMI
1 stop16h 55m
American Airlines
Deal found 3/30![American Airlines logo]()
$482
This American Airlines deal was found by Cheapflights users on 3/29. 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 5/196:55 pm
CMI
- SFO
1 stop7h 04m
American Airlines
Wed 5/275:23 am
SFO
- CMI
1 stop6h 52m
American Airlines
Deal found 3/29![American Airlines logo]()
$428
This American Airlines deal was found by Cheapflights users on 3/31. 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 5/216:39 pm
CMI
- SFO
1 stop7h 08m
American Airlines
Tue 5/2611:14 pm
SFO
- CMI
1 stop9h 53m
American Airlines
Deal found 3/31![American Airlines logo]()
$433
This United Airlines deal was found by Cheapflights users on 4/1. 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.
Thu 5/217:51 pm
CMI
- SFO
1 stop7h 51m
United Airlines
Tue 5/2610:38 pm
SFO
- CMI
1 stop8h 16m
United Airlines
Deal found 4/1![United Airlines logo]()
$533
One-way flights from Champaign to San FranciscoSearch for one-way flight options from Champaign to San Francisco. Find affordable one-way fares based on user searches. Data last updated April 2, 2026.
Search for one-way flight options from Champaign to San Francisco. Find affordable one-way fares based on user searches. Data last updated April 2, 2026.
This United Airlines deal was found by Cheapflights users on 3/30. 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 5/191:36 pm
CMI
- SFO
1 stop7h 56m
United Airlines
Deal found 3/30![United Airlines logo]()
$271
This American Airlines deal was found by Cheapflights users on 3/28. 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.
Sun 5/36:58 pm
CMI
- SFO
1 stop7h 01m
American Airlines
Deal found 3/28![American Airlines logo]()
$301
This American Airlines deal was found by Cheapflights users on 3/29. 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 9/197:00 am
CMI
- SFO
2 stops11h 06m
American Airlines
Deal found 3/29![American Airlines logo]()
$307
This United Airlines deal was found by Cheapflights users on 3/31. 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.
Sun 5/36:00 am
CMI
- SFO
1 stop7h 24m
United Airlines
Deal found 3/31![United Airlines logo]()
$351
This American Airlines deal was found by Cheapflights users on 3/29. 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 stop7h 01m
American Airlines
Deal found 3/29![American Airlines logo]()
$354
This American Airlines deal was found by Cheapflights users on 3/29. 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 4/76:58 pm
CMI
- SFO
1 stop7h 01m
American Airlines
Deal found 3/29![American Airlines logo]()
$373
This American Airlines deal was found by Cheapflights users on 3/29. 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.
Fri 4/106:58 pm
CMI
- SFO
1 stop7h 01m
American Airlines
Deal found 3/29![American Airlines logo]()
$404
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 April 2, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $358 (United Airlines) |
One-way from | $271 (United Airlines) |
Popular in | November |
Cheapest in | September |
Average price | $556 |
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 April 2, 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
Cheapest round-trip
ChampaignSan Francisco
CMI - SFO
CMISFO
Champaign University-Willard
Thu 8/20
1:32 pm-7:12 pm
1 stop7h 40m
San Francisco
Sun 8/23
11:30 pm-8:54 am
1 stop7h 24m
$358
ChampaignSan Francisco
CMI - SFO
CMISFO
Champaign University-Willard
Thu 8/20
5:45 am-10:26 am
1 stop6h 41m
San Francisco
Mon 8/24
10:35 pm-8:54 am
1 stop8h 19m
$358
Quickest round-trip
ChampaignSan Francisco
CMI - SFO
CMISFO
Champaign University-Willard
Thu 4/16
6:58 pm-11:59 pm
1 stop7h 01m
San Francisco
Mon 4/20
5:30 am-2:08 pm
1 stop6h 38m
$408
ChampaignSan Francisco
CMI - SFO
CMISFO
Champaign University-Willard
Fri 4/17
6:58 pm-11:59 pm
1 stop7h 01m
San Francisco
Tue 4/21
7:21 am-6:28 pm
1 stop9h 07m
$408
ChampaignSan Francisco
CMI - SFO
CMISFO
Champaign University-Willard
Thu 6/4
6:44 pm-11:47 pm
1 stop7h 03m
San Francisco
Wed 6/10
12:36 pm-10:01 pm
1 stop7h 25m
$428
ChampaignSan Francisco
CMI - SFO
CMISFO
Champaign University-Willard
Tue 5/19
6:55 pm-11:59 pm
1 stop7h 04m
San Francisco
Wed 5/27
5:23 am-2:15 pm
1 stop6h 52m
$428
ChampaignSan Francisco
CMI - SFO
CMISFO
Champaign University-Willard
Thu 5/21
6:39 pm-11:47 pm
1 stop7h 08m
San Francisco
Tue 5/26
11:14 pm-11:07 am
1 stop9h 53m
$433
ChampaignSan Francisco
CMI - SFO
CMISFO
Champaign University-Willard
Fri 7/17
7:34 pm-12:32 am
1 stop6h 58m
San Francisco
Sun 7/19
11:30 pm-8:54 am
1 stop7h 24m
$434
Cheapest one-way
ChampaignSan Francisco
CMI - SFO
CMISFO
Champaign University-Willard
Tue 5/19
1:36 pm-7:32 pm
1 stop7h 56m
$271
ChampaignSan Francisco
CMI - SFO
CMISFO
Champaign University-Willard
Sun 5/17
7:36 pm-1:50 am
1 stop8h 14m
$301
Showing 1-10 of 13 resultsSorted by cheapest first
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 April.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- 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.
CMI-SFO
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 $393). 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.
How much does it cost to fly round-trip from Champaign to San Francisco?
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 April 2, 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.
Boarding
7.5
Crew
8.0
Food
6.4
Entertainment
6.9
Overall
7.1
Comfort
7.2
Reviews
1 / 20
4.0
OkayElizabeth,Mar 2026
ORD - MIA
Boarding
7.5
Crew
8.0
Food
6.4
Entertainment
6.9
Overall
7.1
Comfort
7.2
Reviews
1 / 20
4.0
OkayElizabeth,Mar 2026
ORD - MIA
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.
Traveling to a place near San Francisco?
Book flights to San Francisco if you plan to visit one of these locationsSouth San Francisco
Santa Cruz
Santa Clara
Livermore
Roseville
Rancho Cordova
San Bruno
Watsonville
San Ramon
Sunnyvale
Vacaville
San Carlos
Redwood City
Turlock
San Lorenzo
Davis
Manteca
Union City
Elk Grove
Foster 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.
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Alternative routes for Champaign to San Francisco
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Complete your trip to San Francisco by adding a car rental and/or hotel reservation to your travel itinerary.
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Champaign and San Francisco flights
Browse other Champaign and San Francisco flight options. Last updated on April 2, 2026.
Other flights from Champaign
Browse through other flights departing from Champaign. Flights are based on user searches made on Cheapflights and were last updated on April 2, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Other flights to San Francisco
Explore flights to San Francisco departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on April 2, 2026.
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 April 2, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$338 | Average$478 | FlexibilityNo cancel fee | On-time71% |