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$220+ Cheap flights from Billings to San Francisco (BIL - 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 12/11. Fares are subject to change and may not be available on all flights or dates of travel.
BIL — SFO
nov. 22 — nov. 291
sáb. 11/22
sáb. 11/29
1 adult, Economy
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Cheap flight deals from Billings to San Francisco

Discover tips and strategies to find the most affordable flight options for your journey from Billings (BIL) 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 octubre 23, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$220
(Kiwi.com)

Popular in

June

Cheapest in

April

Average price

$328
Provider with most accurate pricing for Billings Logan Intl-San Francisco flight deals.
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Provider most trusted by Cheapflights users for Billings Logan Intl-San Francisco flights.
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From Billings Logan Intl to San Francisco
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Highest demand for flights based on searches. 3% potential increase in price ($13 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find flight deals from Billings to San Francisco

Cheapest flights from Billings to San Francisco
Explore the most affordable flight options available from Billings to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on octubre 23, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/1110:24 pmBIL - SFO
1 stop10h 24mMultiple Airlines
mié. 12/1710:10 pmSFO - BIL
2 stops34h 02mMultiple Airlines
Deal found 10/22$220
This Alaska Airlines deal was found by Cheapflights users on 10/23. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/123:36 pmBIL - SFO
2 stops20h 24mAlaska Airlines
lun. 12/156:20 pmSFO - BIL
1 stop4h 48mAlaska Airlines
Deal found 10/23$248
This Alaska Airlines deal was found by Cheapflights users on 10/22. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/112:02 pmBIL - SFO
1 stop7h 13mAlaska Airlines
mié. 12/177:35 amSFO - BIL
1 stop6h 21mAlaska Airlines
Deal found 10/22$258
This Kiwi.com deal was found by Cheapflights users on 10/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/263:32 pmBIL - SFO
2 stops30h 15mMultiple Airlines
jue. 12/112:13 pmSFO - BIL
1 stop17h 59mMultiple Airlines
Deal found 10/22$343
This Alaska Airlines deal was found by Cheapflights users on 10/22. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/266:00 amBIL - SFO
1 stop15h 17mAlaska Airlines
mié. 12/317:00 amSFO - BIL
1 stop16h 32mAlaska Airlines
Deal found 10/22$360
This Alaska Airlines deal was found by Cheapflights users on 10/21. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/46:00 amBIL - SFO
2 stops10h 47mAlaska Airlines
mar. 11/118:00 amSFO - BIL
1 stop6h 00mAlaska Airlines
Deal found 10/21$363
This Alaska Airlines deal was found by Cheapflights users on 10/22. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/266:00 amBIL - SFO
1 stop15h 17mAlaska Airlines
mar. 12/309:41 pmSFO - BIL
1 stop12h 14mAlaska Airlines
Deal found 10/22$395

Cheapflights Fare Finder

 
Customize your flight search to find flights from Billings 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 octubre 23, 2025.
Use the filters below to find and compare flights from Billings to San Francisco that are best for you.

Fly from

Billings

Fly to

San Francisco

Route

Depart

Return

Price

BillingsSan Francisco

BIL - SFO

BILSFO

Billings Logan Intl

vie. 12/12

3:36 pm-11:00 am

2 stops20h 24m

San Francisco

lun. 12/15

6:20 pm-12:08 am

1 stop4h 48m

$248

BillingsSan Francisco

BIL - SFO

BILSFO

Billings Logan Intl

mar. 3/10

7:40 am-1:38 pm

1 stop6h 58m

San Francisco

mié. 3/11

4:40 pm-10:43 pm

1 stop5h 03m

$258

BillingsSan Francisco

BIL - SFO

BILSFO

Billings Logan Intl

mar. 3/10

1:25 pm-6:08 pm

1 stop5h 43m

San Francisco

mié. 3/11

4:40 pm-10:43 pm

1 stop5h 03m

$258

BillingsSan Francisco

BIL - SFO

BILSFO

Billings Logan Intl

jue. 12/11

2:02 pm-8:15 pm

1 stop7h 13m

San Francisco

mié. 12/17

7:35 am-2:56 pm

1 stop6h 21m

$258

BillingsSan Francisco

BIL - SFO

BILSFO

Billings Logan Intl

mar. 3/10

5:40 am-9:22 am

1 stop4h 42m

San Francisco

mié. 3/11

1:59 pm-10:37 pm

2 stops7h 38m

$264

BillingsSan Francisco

BIL - SFO

BILSFO

Billings Logan Intl

jue. 2/5

7:00 am-8:24 pm

2 stops14h 24m

San Francisco

vie. 2/13

9:40 pm-12:51 pm

1 stop14h 11m

$280

BillingsSan Francisco

BIL - SFO

BILSFO

Billings Logan Intl

sáb. 3/28

1:55 pm-8:10 pm

1 stop7h 15m

San Francisco

mar. 3/31

12:35 pm-10:43 pm

1 stop9h 08m

$338

BillingsSan Francisco

BIL - SFO

BILSFO

Billings Logan Intl

vie. 12/26

6:00 am-9:33 am

1 stop28h 33m

$262

BillingsSan Francisco

BIL - SFO

BILSFO

Billings Logan Intl

mar. 11/25

6:00 am-10:52 am

1 stop5h 52m

$442

BillingsSan Francisco

BIL - SFO

BILSFO

Billings Logan Intl

vie. 12/26

10:14 am-1:13 pm

3 stops27h 59m

$702

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/21

Compare providers for flights from Billings 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 Billings to San Francisco in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice 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 Billings-San Francisco flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Billings-San Francisco flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Billings-San Francisco flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Billings-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 Billings-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 Billings to San Francisco

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

What is the cheapest month to book a flight from Billings to San Francisco?

Currently, August is the cheapest month in which you can book a flight from Billings to San Francisco (average of $137). Flying from Billings to San Francisco in June is currently the most expensive (average of $333). 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.

What is the cheapest time of day to fly from BIL to SFO?

Find hourly flight availability from Billings to San Francisco. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated octubre 23, 2025.

One of the essential ways to save on airfare from Billings to San Francisco is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the evening could potentially save you up to 40% on airfare.

How much does it cost to fly round-trip from Billings to San Francisco?

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 octubre 23, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Delta, and United Airlines from Billings to San Francisco by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,155 reviews

Food

7.1

Entertainment

7.0

Boarding

8.1

Crew

8.5

Comfort

7.8

Overall

8.0

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Alaska Airlines
8.0
Very good
11,155 reviews
Alaska Airlines
8.0
Very good
11,155 reviews

Food

7.1

Entertainment

7.0

Boarding

8.1

Crew

8.5

Comfort

7.8

Overall

8.0

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Delta
7.9
Good
7,981 reviews
Alaska Airlines
8.0
Very good
11,155 reviews

Food

7.1

Entertainment

7.0

Boarding

8.1

Crew

8.5

Comfort

7.8

Overall

8.0

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
United Airlines
7.4
Good
8,991 reviews
Alaska Airlines
8.0
Very good
11,155 reviews

Food

7.1

Entertainment

7.0

Boarding

8.1

Crew

8.5

Comfort

7.8

Overall

8.0

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.

Related info for your journey

Find useful and relevant information for your journey from Billings 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 Billings to San Francisco?

    There are many flights that can get you from Billings to San Francisco in 6h 58m. Fly via Alaska Airlines or Hawaiian Airlines to get the fastest option. There are 908 mi between Billings and San Francisco. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Billings to San Francisco round-trip?

    According to our current data, Alaska Airlines ($191), United Airlines ($220), and Delta ($236) offers the cheapest pricing from Billings to San Francisco. These flights start at 41% lower than the current average price 3 months from now.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Billings 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 Billings to San Francisco?

    Currently, August is the cheapest month in which you can book a flight from Billings to San Francisco (average of $137). Flying from Billings to San Francisco in June is currently the most expensive (average of $333). 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
Roseville
Santa Cruz
Livermore
South San Francisco
Turlock
Antioch
Watsonville
Santa Clara
Manteca
Sunnyvale
Vacaville
Vallejo
Hollister
Foster City
Union City
Fairfield
Burlingame
Redwood City
Lodi
San Mateo

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Top 3 airlines flying from Billings to San Francisco

Discover the top 3 airlines that operate flights from Billings 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 octubre 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$191Average$328FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$220Average$449FlexibilityNo cancel feeOn-time69%
DeltaCheapest$236Average$301FlexibilityNo cancel feeOn-timeN/A

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