$315+ 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 10/9. Fares are subject to change and may not be available on all flights or dates of travel.
DEC — SFO
Oct 11 — Oct 181
Round-trip
1 adult, Economy
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Find cheap flights from Decatur to San Francisco 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 Decatur to San Francisco
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Best
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One-way
Cheapest flights from Decatur to San FranciscoExplore 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 September 11, 2026.
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 September 11, 2026.
This United Airlines deal was found by Cheapflights users on 9/9. 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 11/246:57 pm -
1 stop7h 56m
Tue 12/111:30 pm -
1 stop7h 16m
Deal found 9/9![United Airlines logo]()
$354
This United Airlines deal was found by Cheapflights users on 9/10. 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 9/257:18 pm -
1 stop7h 12m
Tue 9/298:15 am -
1 stop8h 28m
Deal found 9/10![United Airlines logo]()
$424
This United Airlines deal was found by Cheapflights users on 9/7. 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 9/227:20 pm -
1 stop7h 10m
Sat 9/2610:35 pm -
1 stop8h 00m
Deal found 9/7![United Airlines logo]()
$444
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Sat 10/107:18 pm -
1 stop7h 12m
Sat 10/1711:30 pm -
1 stop7h 05m
Deal found 9/10![United Airlines logo]()
$454
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Sat 12/197:03 pm -
1 stop7h 56m
Sun 1/1712:40 am -
1 stop6h 06m
Deal found 9/10![United Airlines logo]()
$520
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Sat 9/267:18 pm -
1 stop7h 12m
Wed 9/3011:30 pm -
1 stop7h 05m
Deal found 9/10![United Airlines logo]()
$524
This United Airlines deal was found by Cheapflights users on 9/8. 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 9/237:20 pm -
1 stop7h 15m
Sun 9/2710:35 pm -
1 stop8h 00m
Deal found 9/8![United Airlines logo]()
$544
This United Airlines deal was found by Cheapflights users on 9/7. 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 11/186:57 pm -
1 stop7h 56m
Mon 11/309:10 pm -
2 stops19h 30m
Deal found 9/7![United Airlines logo]()
$622
Best flights from Decatur to San FranciscoDiscover carefully curated flight deals from Decatur to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 11, 2026.
Discover carefully curated flight deals from Decatur to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 11, 2026.
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Sat 10/107:18 pm -
1 stop7h 12m
Sat 10/1711:30 pm -
1 stop7h 05m
Deal found 9/10![United Airlines logo]()
$454
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Sat 9/267:18 pm -
1 stop7h 12m
Wed 9/3011:30 pm -
1 stop7h 05m
Deal found 9/10![United Airlines logo]()
$524
This United Airlines deal was found by Cheapflights users on 9/9. 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 11/246:57 pm -
1 stop7h 56m
Tue 12/14:25 pm -
2 stops14h 21m
Deal found 9/9![United Airlines logo]()
$542
This United Airlines deal was found by Cheapflights users on 9/8. 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 9/237:20 pm -
1 stop7h 15m
Sun 9/2710:35 pm -
1 stop8h 00m
Deal found 9/8![United Airlines logo]()
$544
This United Airlines deal was found by Cheapflights users on 9/7. 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 11/186:57 pm -
1 stop7h 56m
Mon 11/309:10 pm -
2 stops19h 30m
Deal found 9/7![United Airlines logo]()
$622
This United Airlines deal was found by Cheapflights users on 9/6. 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 9/217:20 pm -
1 stop7h 10m
Fri 9/259:10 pm -
2 stops19h 33m
Deal found 9/6![United Airlines logo]()
$682
This United Airlines deal was found by Cheapflights users on 9/7. 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 9/227:20 pm -
1 stop7h 10m
Sat 9/262:10 pm -
2 stops16h 25m
Deal found 9/7![United Airlines logo]()
$684
This United Airlines deal was found by Cheapflights users on 9/9. 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 11/209:10 am -
1 stop9h 10m
Sat 11/286:42 pm -
1 stop11h 53m
Deal found 9/9![United Airlines logo]()
$745
Last-minute flights from Decatur to San FranciscoDiscover last-minute flight deals from Decatur to San Francisco. Data last updated September 11, 2026 and is based on user searches.
Discover last-minute flight deals from Decatur to San Francisco. Data last updated September 11, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 9/10. 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 9/119:12 am -
1 stop8h 23m
Mon 9/146:38 pm -
1 stop22h 06m
Deal found 9/10![United Airlines logo]()
$776
This United Airlines deal was found by Cheapflights users on 9/6. 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 9/217:20 pm -
1 stop7h 10m
Fri 9/259:10 pm -
2 stops19h 33m
Deal found 9/6![United Airlines logo]()
$682
This United Airlines deal was found by Cheapflights users on 9/7. 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 9/227:20 pm -
1 stop7h 10m
Sat 9/2610:35 pm -
1 stop8h 00m
Deal found 9/7![United Airlines logo]()
$444
This United Airlines deal was found by Cheapflights users on 9/8. 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 9/237:20 pm -
1 stop7h 15m
Sun 9/2710:35 pm -
1 stop8h 00m
Deal found 9/8![United Airlines logo]()
$544
This United Airlines deal was found by Cheapflights users on 9/9. 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 9/247:18 pm -
1 stop7h 12m
Mon 9/281:50 pm -
1 stop26h 53m
Deal found 9/9![United Airlines logo]()
$656
This United Airlines deal was found by Cheapflights users on 9/10. 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 9/257:18 pm -
1 stop7h 12m
Tue 9/298:15 am -
1 stop8h 28m
Deal found 9/10![United Airlines logo]()
$424
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Sat 9/267:18 pm -
1 stop7h 12m
Wed 9/3011:30 pm -
1 stop7h 05m
Deal found 9/10![United Airlines logo]()
$524
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Sat 10/107:18 pm -
1 stop7h 12m
Sat 10/1711:30 pm -
1 stop7h 05m
Deal found 9/10![United Airlines logo]()
$454
One-way flights from Decatur to San FranciscoSearch for one-way flight options from Decatur to San Francisco. Find affordable one-way fares based on user searches. Data last updated September 11, 2026.
Search for one-way flight options from Decatur to San Francisco. Find affordable one-way fares based on user searches. Data last updated September 11, 2026.
This United Airlines deal was found by Cheapflights users on 9/7. 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 10/97:18 pm -
1 stop26h 11m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![United Airlines logo]()
$315
This United Airlines deal was found by Cheapflights users on 9/9. 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 10/167:18 pm -
2 stops24h 24m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![United Airlines logo]()
$345
This United Airlines deal was found by Cheapflights users on 9/9. 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 11/206:57 pm -
1 stop15h 51m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![United Airlines logo]()
$356
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 September 11, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $354 (United Airlines) |
One-way from | $315 (United Airlines) |
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 7,457,451 searches. Data last updated September 11, 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
Cheapest round-trip
DecaturSan Francisco
DEC Decatur Arpt - SFO San Francisco
DECSFO
Decatur Arpt
Fri 10/9
7:18 pm-7:29 pm
1 stop26h 11m
San Francisco
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$315
DecaturSan Francisco
DEC Decatur Arpt - SFO San Francisco
DECSFO
Decatur Arpt
Fri 10/16
7:18 pm-8:37 am
1 stop15h 19m
San Francisco
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$315
Quickest round-trip
DecaturSan Francisco
DEC Decatur Arpt - SFO San Francisco
DECSFO
Decatur Arpt
Sat 10/10
7:18 pm-12:30 am
1 stop7h 12m
San Francisco
Sat 10/17
11:30 pm-8:35 am
1 stop7h 05m
$454
DecaturSan Francisco
DEC Decatur Arpt - SFO San Francisco
DECSFO
Decatur Arpt
Fri 11/20
6:57 pm-3:15 pm
2 stops22h 18m
San Francisco
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$469
DecaturSan Francisco
DEC Decatur Arpt - SFO San Francisco
DECSFO
Decatur Arpt
Sat 9/26
7:18 pm-12:30 am
1 stop7h 12m
San Francisco
Wed 9/30
11:30 pm-8:35 am
1 stop7h 05m
$524
DecaturSan Francisco
DEC Decatur Arpt - SFO San Francisco
DECSFO
Decatur Arpt
Tue 11/24
6:57 pm-12:53 am
1 stop7h 56m
San Francisco
Tue 12/1
4:25 pm-8:46 am
2 stops14h 21m
$542
DecaturSan Francisco
DEC Decatur Arpt - SFO San Francisco
DECSFO
Decatur Arpt
Wed 9/23
7:20 pm-12:35 am
1 stop7h 15m
San Francisco
Sun 9/27
10:35 pm-8:35 am
1 stop8h 00m
$544
DecaturSan Francisco
DEC Decatur Arpt - SFO San Francisco
DECSFO
Decatur Arpt
Wed 11/18
6:57 pm-12:53 am
1 stop7h 56m
San Francisco
Mon 11/30
9:10 pm-6:40 pm
2 stops19h 30m
$622
DecaturSan Francisco
DEC Decatur Arpt - SFO San Francisco
DECSFO
Decatur Arpt
Mon 9/21
7:20 pm-12:30 am
1 stop7h 10m
San Francisco
Fri 9/25
9:10 pm-6:43 pm
2 stops19h 33m
$682
DecaturSan Francisco
DEC Decatur Arpt - SFO San Francisco
DECSFO
Decatur Arpt
Tue 9/22
7:20 pm-12:30 am
1 stop7h 10m
San Francisco
Sat 9/26
2:10 pm-8:35 am
2 stops16h 25m
$684
Showing 1-10 of 11 resultsSorted 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 September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
- 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.
DEC-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.
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 September 11, 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.
Comfort
7.3
Crew
8.1
Boarding
7.7
Entertainment
7.1
Food
6.7
Overall
7.4
Reviews
1 / 20
10.0
ExcellentKathy,Jun 2024
RDD - SFO
Comfort
7.3
Crew
8.1
Boarding
7.7
Entertainment
7.1
Food
6.7
Overall
7.4
Reviews
1 / 20
10.0
ExcellentKathy,Jun 2024
RDD - SFO
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.
Traveling to a place near San Francisco?
Book flights to San Francisco if you plan to visit one of these locationsSouth San Francisco
Santa Clara
Santa Cruz
Walnut Creek
Emeryville
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Burlingame
Rancho Cordova
Roseville
Fairfield
Cupertino
Newark
Hayward
San Ramon
Redwood City
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Decatur and San Francisco flights
Browse other Decatur and San Francisco flight options. Last updated on September 11, 2026.
Other flights from Decatur
Browse through other flights departing from Decatur. Flights are based on user searches made on Cheapflights and were last updated on September 11, 2026.
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Explore flights to San Francisco departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 11, 2026.
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 7,457,451 searches. Data last updated September 11, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$316 | Average$440 | FlexibilityNo cancel fee | On-time69% |