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$334+ Cheap flights from Decatur, IL (DEC) to San Francisco Bay Area

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 8/15. Fares are subject to change and may not be available on all flights or dates of travel.
DEC — SFO
Aug 7 — Aug 141
Thu 8/7
Thu 8/14
1 adult, Economy
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Cheap flight deals from Decatur to San Francisco Bay Area

Keep the following information in mind while searching for Decatur to San Francisco Bay Area flight deals. Data was last updated August 2, 2025.

Round-trip from

$334
(United Airlines)
From Decatur Arpt to San Francisco Bay Area
Search Deals

Find flight deals from Decatur to San Francisco Bay Area

Cheapest flights from Decatur to San Francisco Bay Area
Explore the most affordable flight options available from Decatur to San Francisco Bay Area. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 2, 2025.

This United Airlines deal was found by Cheapflights users on 7/31. 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 8/159:45 amDEC - SFO
1 stop9h 41mUnited Airlines
Tue 8/1911:10 pmSFO - DEC
1 stop7h 46mUnited Airlines
Deal found 7/31$334

Cheapflights Fare Finder

 
Customize your flight search to find flights from Decatur to San Francisco Bay Area 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 2, 2025.
Use the filters below to find and compare flights from Decatur to San Francisco Bay Area that are best for you.

Fly from

Decatur

Fly to

San Francisco Bay Area

Route

Depart

Return

Price

DecaturSan Francisco

DEC - SFO

DECSFO

Decatur Arpt

Fri 8/15

9:45 am-5:26 pm

1 stop9h 41m

San Francisco

Tue 8/19

11:10 pm-8:56 am

1 stop7h 46m

$334

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/31

Best time to book a flight from Decatur to San Francisco Bay Area

Have a flexible travel schedule? Discover the best time to fly to San Francisco Bay Area 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 Bay Area

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

Currently, January is the cheapest month in which you can book a flight from Decatur, Illinois to San Francisco Bay Area (average of $276). Flying from Decatur, Illinois to San Francisco Bay Area 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.

Reviews of airlines servicing San Francisco Bay Area

Get insights into the airlines that provide service to San Francisco Bay Area. 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 Bay Area. Reviews last updated August 2, 2025.
Read through reviews of airlines operating flights from Decatur to San Francisco Bay Area, such as United Airlines. 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.
United Airlines
7.4
Good
8,905 reviews

Overall

7.4

Crew

8.1

Boarding

7.7

Comfort

7.3

Entertainment

7.0

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.
United Airlines
7.4
Good
8,905 reviews
United Airlines
7.4
Good
8,905 reviews

Overall

7.4

Crew

8.1

Boarding

7.7

Comfort

7.3

Entertainment

7.0

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.

Related info for your journey

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

  • What airport do you fly from for flights from Decatur to San Francisco Bay Area?

    If you book a flight to San Francisco Bay Area from Decatur, you will be flying from Decatur Arpt, which is the city’s only airport. Decatur Arpt (DEC) is located 4.7 mi from the center of Decatur.

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

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

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

    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 Bay Area.

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

    Yes. Cheapflights offers flight deals from Decatur to San Francisco Bay Area 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 Bay Area?

    Currently, January is the cheapest month in which you can book a flight from Decatur, Illinois to San Francisco Bay Area (average of $276). Flying from Decatur, Illinois to San Francisco Bay Area 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

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Top airline flying from Decatur to San Francisco Bay Area

Discover the top airline that operate flights from Decatur to San Francisco Bay Area. 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 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$283Average$309FlexibilityNo cancel feeOn-time69%

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