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$136+ Cheap flights from Billings to San Francisco (BIL - SFO)

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 2/21. Fares are subject to change and may not be available on all flights or dates of travel.
BIL — SFO
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
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 September 17, 2025.

Round-trip from

$246
(KAYAK)

One-way from

$136
(Hawaiian Airlines)

Popular in

November

Cheapest in

April

Average price

$373
From Billings Logan Intl to San Francisco
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One-way flight from Billings Logan Intl to San Francisco
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Highest demand for flights based on searches. 11% potential increase in price ($42 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in September 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 September 17, 2025.

This KAYAK deal was found by Cheapflights users on 9/15. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/283:40 pmBIL - SFO
1 stop5h 07mAlaska Airlines
Tue 11/48:00 amSFO - BIL
1 stop4h 20mAlaska Airlines
Deal found 9/15$246
This KAYAK deal was found by Cheapflights users on 9/15. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/282:00 pmBIL - SFO
1 stop7h 13mAlaska Airlines
Mon 11/36:18 pmSFO - BIL
1 stop4h 49mAlaska Airlines
Deal found 9/15$257
This Delta deal was found by Cheapflights users on 9/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/285:25 amBIL - SFO
2 stops7h 15mDelta
Tue 11/43:23 pmSFO - BIL
1 stop6h 55mDelta
Deal found 9/15$278
This Delta deal was found by Cheapflights users on 9/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/145:18 amBIL - SFO
1 stop4h 38mDelta
Sun 11/165:00 pmSFO - BIL
1 stop5h 49mDelta
Deal found 9/17$289
This Delta deal was found by Cheapflights users on 9/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/226:24 pmBIL - SFO
1 stop5h 29mDelta
Tue 11/256:00 amSFO - BIL
1 stop4h 02mDelta
Deal found 9/15$362
This Alaska Airlines deal was found by Cheapflights users on 9/17. 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.
Fri 11/146:00 amBIL - SFO
2 stops12h 22mAlaska Airlines
Sun 11/1610:09 pmSFO - BIL
2 stops14h 11mAlaska Airlines
Deal found 9/17$405
This Alaska Airlines deal was found by Cheapflights users on 9/16. 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.
Fri 12/266:00 amBIL - SFO
1 stop18h 54mAlaska Airlines
Mon 12/298:46 pmSFO - BIL
1 stop13h 09mAlaska Airlines
Deal found 9/16$496
This Alaska Airlines deal was found by Cheapflights users on 9/15. 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.
Tue 9/306:00 amBIL - SFO
2 stops12h 25mAlaska Airlines
Sat 10/47:01 pmSFO - BIL
1 stop17h 18mAlaska Airlines
Deal found 9/15$498

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 September 17, 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

Tue 10/28

3:40 pm-7:47 pm

1 stop5h 07m

San Francisco

Tue 11/4

8:00 am-1:20 pm

1 stop4h 20m

$246

BillingsSan Francisco

BIL - SFO

BILSFO

Billings Logan Intl

Tue 10/28

2:00 pm-8:13 pm

1 stop7h 13m

San Francisco

Mon 11/3

6:18 pm-12:07 am

1 stop4h 49m

$257

BillingsSan Francisco

BIL - SFO

BILSFO

Billings Logan Intl

Tue 10/28

5:25 am-11:40 am

2 stops7h 15m

San Francisco

Tue 11/4

3:23 pm-11:18 pm

1 stop6h 55m

$278

BillingsSan Francisco

BIL - SFO

BILSFO

Billings Logan Intl

Tue 10/28

5:25 am-2:33 pm

2 stops10h 08m

San Francisco

Mon 11/3

5:30 pm-10:25 pm

1 stop3h 55m

$278

BillingsSan Francisco

BIL - SFO

BILSFO

Billings Logan Intl

Fri 11/14

5:18 am-8:56 am

1 stop4h 38m

San Francisco

Sun 11/16

5:00 pm-11:49 pm

1 stop5h 49m

$289

BillingsSan Francisco

BIL - SFO

BILSFO

Billings Logan Intl

Tue 3/10

6:15 am-1:25 pm

1 stop8h 10m

San Francisco

Wed 3/11

5:15 pm-10:37 pm

1 stop4h 22m

$305

BillingsSan Francisco

BIL - SFO

BILSFO

Billings Logan Intl

Fri 2/20

3:35 pm-7:19 pm

1 stop4h 44m

$136

BillingsSan Francisco

BIL - SFO

BILSFO

Billings Logan Intl

Sat 2/21

3:35 pm-7:19 pm

1 stop4h 44m

$136

BillingsSan Francisco

BIL - SFO

BILSFO

Billings Logan Intl

Mon 10/20

6:15 pm-11:43 pm

1 stop6h 28m

$137

BillingsSan Francisco

BIL - SFO

BILSFO

Billings Logan Intl

Tue 10/21

5:25 am-12:43 pm

2 stops8h 18m

$142

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

Showing 1-10 of 14 results
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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, January is the cheapest month in which you can book a flight from Billings to San Francisco (average of $276). Flying from Billings to San Francisco in June is currently the most expensive (average of $357). 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 September 17, 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 41% on airfare.

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 17, 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
10,000 reviews

Comfort

7.8

Entertainment

7.1

Food

7.1

Boarding

8.1

Crew

8.5

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
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Food

7.1

Boarding

8.1

Crew

8.5

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
8.0
Very good
7,961 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Food

7.1

Boarding

8.1

Crew

8.5

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
8,926 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Food

7.1

Boarding

8.1

Crew

8.5

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 5h 07m. Fly via Alaska Airlines or Delta 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 43% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from Billings to San Francisco one-way?

    For one-way options, check prices for Alaska Airlines. According to our data, you can fly for as low as $136. Users have also found prices from $136 and $137 on Hawaiian Airlines and Delta, respectively.

  • 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, January is the cheapest month in which you can book a flight from Billings to San Francisco (average of $276). Flying from Billings to San Francisco in June is currently the most expensive (average of $357). 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
Hollister
Vacaville
Foster City
Union City
Vallejo
Burlingame
Redwood City
San Mateo
San Leandro
Lathrop

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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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$191Average$328FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$220Average$404FlexibilityNo cancel feeOn-time69%
DeltaCheapest$236Average$301FlexibilityNo cancel feeOn-timeN/A

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