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$436+ Cheap flights from Decatur, IL to San Francisco (DEC - SFO)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/7. Fares are subject to change and may not be available on all flights or dates of travel.
DEC — SFO
Aug 14 — Aug 211
Fri 8/14
Fri 8/21
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 July 15, 2026.

This United Airlines deal was found by Cheapflights users on 7/10. 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 8/76:45 pm
DEC
-
SFO
1 stop7h 47m
United Airlines
Thu 8/1310:35 pm
SFO
-
DEC
1 stop7h 02m
United Airlines
Deal found 7/10$436
This United Airlines deal was found by Cheapflights users on 7/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/267:20 pm
DEC
-
SFO
1 stop6h 56m
United Airlines
Sat 8/2910:35 pm
SFO
-
DEC
1 stop6h 34m
United Airlines
Deal found 7/13$444
This United Airlines deal was found by Cheapflights users on 7/10. 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 12/109:42 am
DEC
-
SFO
1 stop9h 39m
United Airlines
Mon 12/145:00 am
SFO
-
DEC
1 stop10h 51m
United Airlines
Deal found 7/10$452
This United Airlines deal was found by Cheapflights users on 7/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/316:45 pm
DEC
-
SFO
1 stop7h 47m
United Airlines
Sun 8/211:30 pm
SFO
-
DEC
1 stop7h 27m
United Airlines
Deal found 7/14$514

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 July 15, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$436
(United Airlines)
Provider with most accurate pricing for Decatur Arpt-San Francisco flight deals.
Search Deals
Provider most trusted by Cheapflights users for Decatur Arpt-San Francisco flights.
Search Deals
From Decatur Arpt to San Francisco
Search Deals

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 July 15, 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
Quickest round-trip

DecaturSan Francisco

DEC - SFO

DECSFO

Decatur Arpt

Wed 8/26

7:20 pm-12:16 am

1 stop6h 56m

San Francisco

Sat 8/29

10:35 pm-7:09 am

1 stop6h 34m

$444

DecaturSan Francisco

DEC - SFO

DECSFO

Decatur Arpt

Thu 12/10

9:42 am-5:21 pm

1 stop9h 39m

San Francisco

Mon 12/14

5:00 am-5:51 pm

1 stop10h 51m

$464

DecaturSan Francisco

DEC - SFO

DECSFO

Decatur Arpt

Fri 7/31

6:45 pm-12:32 am

1 stop7h 47m

San Francisco

Sun 8/2

11:30 pm-8:57 am

1 stop7h 27m

$514

DecaturSan Francisco

DEC - SFO

DECSFO

Decatur Arpt

Fri 8/7

6:45 pm-12:32 am

1 stop7h 47m

San Francisco

Thu 8/13

10:35 pm-7:37 am

1 stop7h 02m

$527

DecaturSan Francisco

DEC - SFO

DECSFO

Decatur Arpt

Wed 10/21

9:12 am-9:47 pm

2 stops14h 35m

San Francisco

Sun 10/25

11:30 pm-8:46 am

1 stop7h 16m

$532

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/13

Sorted by cheapest first

Compare providers for flights from Decatur 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 Decatur to San Francisco in July.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy1 starTrust 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 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.

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 July 15, 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
9,988 reviews

Overall

7.4

Comfort

7.3

Entertainment

7.1

Crew

8.1

Boarding

7.7

Food

6.7

Reviews

1 / 20
10.0
Excellent

Kathy,Jun 2024

RDD - SFO

United has consistently been good. Every now and then there is a crew member that should probably retire, but most of them are excellent.
United Airlines
7.4
Good
9,988 reviews
United Airlines
7.4
Good
9,988 reviews

Overall

7.4

Comfort

7.3

Entertainment

7.1

Crew

8.1

Boarding

7.7

Food

6.7

Reviews

1 / 20
10.0
Excellent

Kathy,Jun 2024

RDD - SFO

United has consistently been good. Every now and then there is a crew member that should probably retire, but most of them are excellent.

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 6h 56m. 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.

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
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Santa Cruz
Fairfield
Burlingame
Rancho Cordova
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Cupertino
Emeryville
Newark
Watsonville
San Bruno
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San Carlos
Turlock
Vallejo
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Davis

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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 July 15, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$316Average$464FlexibilityNo cancel feeOn-time69%

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