HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Decatur

$265+ Cheap flights from San Francisco to Decatur, IL (SFO - DEC)

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 2/18. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — DEC
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from San Francisco to Decatur 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 San Francisco to Decatur

Cheapest flights from San Francisco to Decatur
Explore the most affordable flight options available from San Francisco to Decatur. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 29, 2026.

This United Airlines deal was found by Cheapflights users on 1/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/912:45 am
SFO
-
DEC
1 stop6h 13m
United Airlines
Wed 4/157:20 pm
DEC
-
SFO
1 stop6h 59m
United Airlines
Deal found 1/29$394
This United Airlines deal was found by Cheapflights users on 1/28. 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.
Wed 8/265:20 am
SFO
-
DEC
1 stop10h 31m
United Airlines
Sat 8/296:55 pm
DEC
-
SFO
1 stop7h 39m
United Airlines
Deal found 1/28$489
This United Airlines deal was found by Cheapflights users on 1/28. 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.
Thu 2/126:45 am
SFO
-
DEC
1 stop9h 09m
United Airlines
Mon 2/169:50 am
DEC
-
SFO
1 stop9h 50m
United Airlines
Deal found 1/28$515
This United Airlines deal was found by Cheapflights users on 1/28. 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 6/166:05 am
SFO
-
DEC
1 stop9h 46m
United Airlines
Thu 6/186:55 pm
DEC
-
SFO
1 stop15h 52m
United Airlines
Deal found 1/28$593
This United Airlines deal was found by Cheapflights users on 1/28. 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.
Mon 2/166:45 am
SFO
-
DEC
1 stop9h 09m
United Airlines
Wed 2/189:50 am
DEC
-
SFO
1 stop11h 29m
United Airlines
Deal found 1/28$683

Find flight deals from San Francisco to Decatur

Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to Decatur (DEC). 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 January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$395
(United Airlines)

One-way from

$265
(United Airlines)
Provider with most accurate pricing for San Francisco-Decatur Arpt flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Francisco-Decatur Arpt flights.
Search Deals
From San Francisco to Decatur Arpt
Search Deals
One-way flight from San Francisco to Decatur Arpt
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Francisco to Decatur 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 January 29, 2026.
Use the filters below to find and compare flights from San Francisco to Decatur that are best for you.

Fly from

San Francisco

Fly to

Decatur

Route

Depart

Return

Price

San FranciscoDecatur

SFO - DEC

SFODEC

San Francisco

Thu 4/9

12:45 am-8:58 am

1 stop6h 13m

Decatur Arpt

Wed 4/15

7:20 pm-12:19 am

1 stop6h 59m

$394

San FranciscoDecatur

SFO - DEC

SFODEC

San Francisco

Tue 6/16

6:05 am-5:51 pm

1 stop9h 46m

Decatur Arpt

Thu 6/18

6:55 pm-8:47 am

1 stop15h 52m

$593

San FranciscoDecatur

SFO - DEC

SFODEC

San Francisco

Thu 2/12

8:25 am-8:52 am

2 stops22h 27m

Decatur Arpt

Mon 2/16

9:50 am-5:40 pm

1 stop9h 50m

$623

San FranciscoDecatur

SFO - DEC

SFODEC

San Francisco

Mon 2/16

6:45 am-5:54 pm

1 stop9h 09m

Decatur Arpt

Wed 2/18

9:50 am-7:19 pm

1 stop11h 29m

$683

San FranciscoDecatur

SFO - DEC

SFODEC

San Francisco

Tue 2/10

8:25 am-6:01 pm

1 stop7h 36m

Decatur Arpt

Thu 2/12

9:50 am-5:40 pm

1 stop9h 50m

$963

San FranciscoDecatur

SFO - DEC

SFODEC

San Francisco

Wed 2/18

5:03 pm-5:54 pm

1 stop22h 51m

$265

San FranciscoDecatur

SFO - DEC

SFODEC

San Francisco

Wed 5/13

5:30 am-8:58 am

1 stop25h 28m

$277

San FranciscoDecatur

SFO - DEC

SFODEC

San Francisco

Sun 3/8

6:44 pm-5:53 pm

1 stop21h 09m

$280

San FranciscoDecatur

SFO - DEC

SFODEC

San Francisco

Sun 3/22

6:44 pm-8:52 am

1 stop12h 08m

$318

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

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

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

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

Currently, May is the cheapest month in which you can book a flight from San Francisco to Decatur, Illinois (average of $270). Flying from San Francisco to Decatur, Illinois in June is currently the most expensive (average of $527). 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 Decatur

Get insights into the airlines that provide service to Decatur. 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 Decatur. Reviews last updated January 29, 2026.
See what other customers who have flown with United Airlines from San Francisco to Decatur 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
9,215 reviews

Boarding

7.7

Overall

7.4

Food

6.6

Crew

8.1

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
9,215 reviews
United Airlines
7.4
Good
9,215 reviews

Boarding

7.7

Overall

7.4

Food

6.6

Crew

8.1

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Related info for your journey

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

    There are many flights that can get you from San Francisco to Decatur, Illinois in 6h 13m. Fly via United Airlines to get the fastest option. The distance between San Francisco and Decatur, Illinois is about 1801 mi.

  • What is the cheapest airline to fly from San Francisco to Decatur, Illinois round-trip?

    Cheapflights users have booked flights from San Francisco to Decatur, Illinois round-trip from $354.

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

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

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

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

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

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

    Currently, May is the cheapest month in which you can book a flight from San Francisco to Decatur, Illinois (average of $270). Flying from San Francisco to Decatur, Illinois in June is currently the most expensive (average of $527). 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 Decatur?

Book flights to Decatur if you plan to visit one of these locations
Mattoon
Effingham

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 San Francisco to Decatur

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

Top airline flying from San Francisco to Decatur

Discover the top airline that operate flights from San Francisco to Decatur. 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 January 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$354Average$476FlexibilityNo cancel feeOn-time69%

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
Cookie settings©2026 Cheapflights