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$305+ Cheap flights from Decatur, IL to San Francisco (DEC - 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 4/10. Fares are subject to change and may not be available on all flights or dates of travel.
DEC — SFO
Apr 15 — Apr 221
Wed 4/15
Wed 4/22
1 adult, Economy
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Cheap flight deals from Decatur to San Francisco

Cheapest flights from Decatur to San Francisco
Explore the most affordable flight options available from Decatur to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 16, 2026.

This United Airlines deal was found by Cheapflights users on 3/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/287:37 pm
DEC
-
SFO
1 stop7h 02m
United Airlines
Sat 5/210:55 pm
SFO
-
DEC
1 stop8h 03m
United Airlines
Deal found 3/12$434
This United Airlines deal was found by Cheapflights users on 3/15. 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.
Wed 5/277:05 pm
DEC
-
SFO
1 stop7h 25m
United Airlines
Sun 5/3110:38 pm
SFO
-
DEC
1 stop8h 19m
United Airlines
Deal found 3/15$479
This United Airlines deal was found by Cheapflights users on 3/15. 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.
Wed 4/227:37 pm
DEC
-
SFO
1 stop7h 02m
United Airlines
Wed 4/2912:45 am
SFO
-
DEC
1 stop6h 13m
United Airlines
Deal found 3/15$480
This United Airlines deal was found by Cheapflights users on 3/15. 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 5/227:05 pm
DEC
-
SFO
1 stop8h 37m
United Airlines
Tue 5/266:34 pm
SFO
-
DEC
1 stop12h 23m
United Airlines
Deal found 3/15$488
This United Airlines deal was found by Cheapflights users on 3/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/217:05 pm
DEC
-
SFO
1 stop8h 37m
United Airlines
Mon 5/256:34 pm
SFO
-
DEC
1 stop21h 22m
United Airlines
Deal found 3/12$503
This United Airlines deal was found by Cheapflights users on 3/15. 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.
Sat 5/237:05 pm
DEC
-
SFO
1 stop7h 25m
United Airlines
Tue 5/265:05 am
SFO
-
DEC
1 stop10h 51m
United Airlines
Deal found 3/15$513
This United Airlines deal was found by Cheapflights users on 3/16. 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 5/227:05 pm
DEC
-
SFO
1 stop7h 25m
United Airlines
Sat 5/304:21 pm
SFO
-
DEC
1 stop14h 36m
United Airlines
Deal found 3/16$523
This United Airlines deal was found by Cheapflights users on 3/16. 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 5/227:05 pm
DEC
-
SFO
1 stop8h 37m
United Airlines
Sun 5/3110:38 pm
SFO
-
DEC
1 stop8h 19m
United Airlines
Deal found 3/16$524

Find flight deals from Decatur to San Francisco

Discover tips and strategies to find the most affordable flight options for your journey from Decatur (DEC) 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 16, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$434
(United Airlines)

One-way from

$305
(United Airlines)
Provider with most accurate pricing for Decatur Arpt-San Francisco flight deals.
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Provider most trusted by Cheapflights users for Decatur Arpt-San Francisco flights.
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From Decatur Arpt to San Francisco
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One-way flight from Decatur Arpt to San Francisco
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Decatur 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 16, 2026.
Use the filters below to find and compare flights from Decatur to San Francisco that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DecaturSan Francisco

DEC - SFO

DECSFO

Decatur Arpt

Fri 5/22

7:05 pm-1:42 am

1 stop8h 37m

San Francisco

Tue 5/26

10:38 pm-8:57 am

1 stop8h 19m

$434
Quickest round-trip

DecaturSan Francisco

DEC - SFO

DECSFO

Decatur Arpt

Sat 4/11

7:37 pm-12:39 am

1 stop7h 02m

San Francisco

Sat 4/18

11:52 pm-8:58 am

1 stop7h 06m

$452

DecaturSan Francisco

DEC - SFO

DECSFO

Decatur Arpt

Tue 4/28

7:37 pm-12:39 am

1 stop7h 02m

San Francisco

Sat 5/2

10:55 pm-8:58 am

1 stop8h 03m

$454

DecaturSan Francisco

DEC - SFO

DECSFO

Decatur Arpt

Thu 4/9

7:37 pm-1:35 am

1 stop7h 58m

San Francisco

Mon 4/20

10:50 pm-12:54 pm

1 stop12h 04m

$488

DecaturSan Francisco

DEC - SFO

DECSFO

Decatur Arpt

Fri 5/22

7:05 pm-12:30 am

1 stop7h 25m

San Francisco

Mon 5/25

10:38 pm-5:56 pm

1 stop17h 18m

$503

DecaturSan Francisco

DEC - SFO

DECSFO

Decatur Arpt

Thu 5/21

7:05 pm-1:42 am

1 stop8h 37m

San Francisco

Mon 5/25

6:34 pm-5:56 pm

1 stop21h 22m

$503

DecaturSan Francisco

DEC - SFO

DECSFO

Decatur Arpt

Thu 5/21

7:05 pm-1:42 am

1 stop8h 37m

San Francisco

Tue 5/26

4:25 pm-8:57 am

2 stops14h 32m

$507
Cheapest one-way

DecaturSan Francisco

DEC - SFO

DECSFO

Decatur Arpt

Tue 6/16

7:05 pm-8:47 am

1 stop15h 42m

$330
Quickest one-way

DecaturSan Francisco

DEC - SFO

DECSFO

Decatur Arpt

Sun 4/12

7:37 pm-1:35 am

1 stop7h 58m

$429

DecaturSan Francisco

DEC - SFO

DECSFO

Decatur Arpt

Thu 3/26

7:15 pm-10:36 am

1 stop17h 21m

$512

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/14

Showing 1-10 of 11 resultsSorted by cheapest first
1
2
  • Most accurate provider: When it comes to deals on Decatur, Illinois-San Francisco flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Decatur, Illinois-San Francisco flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Decatur, Illinois-San Francisco flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Decatur, Illinois-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 Decatur, Illinois-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 Decatur to San Francisco

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

What is the cheapest month to book a flight from Decatur, Illinois to San Francisco?

Currently, December is the cheapest month in which you can book a flight from Decatur, Illinois to San Francisco (average of $228). Flying from Decatur, Illinois 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.

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 16, 2026.
See what other customers who have flown with United Airlines from Decatur to San Francisco have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,428 reviews

Boarding

7.7

Food

6.6

Crew

8.1

Entertainment

7.1

Overall

7.4

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.
United Airlines
7.4
Good
9,428 reviews
United Airlines
7.4
Good
9,428 reviews

Boarding

7.7

Food

6.6

Crew

8.1

Entertainment

7.1

Overall

7.4

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.

Related info for your journey

Find useful and relevant information for your journey from Decatur 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 Decatur, Illinois to San Francisco?

    Airlines like United Airlines fly from Decatur, Illinois to San Francisco in about 8h 37m. The time it takes to get you to your destination can typically vary by up to . Airlines will cover a distance of 1801 mi.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Decatur 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 Decatur, Illinois to San Francisco?

    Currently, December is the cheapest month in which you can book a flight from Decatur, Illinois to San Francisco (average of $228). Flying from Decatur, Illinois 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.

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 Clara
Santa Cruz
Livermore
Roseville
Watsonville
Rancho Cordova
San Bruno
San Ramon
Sunnyvale
Vacaville
San Carlos
Redwood City
Turlock
San Lorenzo
Davis
Manteca
Union City
Elk Grove
Rohnert Park

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Alternative routes for Decatur to San Francisco

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Top airline flying from Decatur to San Francisco

Discover the top airline that operate flights from Decatur 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 16, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$309Average$440FlexibilityNo cancel feeOn-time69%

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