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San Francisco Bay Area

$220+ Cheap flights from Billings (BIL) 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 1/10. Fares are subject to change and may not be available on all flights or dates of travel.
BIL — SFO
Jan 20 — Jan 271
Tue 1/20
Tue 1/27
1 adult, Economy
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Cheap flight deals from Billings to San Francisco Bay Area

Cheapest flights from Billings to San Francisco Bay Area
Explore the most affordable flight options available from Billings to San Francisco Bay Area. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 21, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/18. 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.
Fri 12/1910:02 amBIL - SFO
1 stop12h 47mMultiple Airlines
Tue 12/231:29 pmSFO - BIL
1 stop20h 48mMultiple Airlines
Deal found 12/18$633
This United Airlines deal was found by Cheapflights users on 12/20. 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 12/262:40 pmBIL - SFO
1 stop6h 14mUnited Airlines
Wed 12/3110:35 pmSFO - BIL
2 stops13h 49mUnited Airlines
Deal found 12/20$778
This American Airlines deal was found by Cheapflights users on 12/19. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/266:50 amBIL - SFO
1 stop10h 08mAmerican Airlines
Mon 12/291:13 pmSFO - BIL
1 stop8h 41mAmerican Airlines
Deal found 12/19$789
This American Airlines deal was found by Cheapflights users on 12/19. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/266:50 amBIL - STS
1 stop10h 01mAmerican Airlines
Tue 12/304:21 pmSTS - BIL
1 stop5h 33mAmerican Airlines
Deal found 12/19$827
This Delta deal was found by Cheapflights users on 12/20. 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 12/266:20 pmBIL - SFO
1 stop6h 43mDelta
Mon 12/296:00 amSFO - BIL
1 stop4h 12mDelta
Deal found 12/20$831
This United Airlines deal was found by Cheapflights users on 12/20. 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 12/265:50 pmBIL - SFO
1 stop6h 15mUnited Airlines
Mon 12/294:40 pmSFO - BIL
2 stops19h 44mUnited Airlines
Deal found 12/20$839
This United Airlines deal was found by Cheapflights users on 12/20. 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 12/265:50 pmBIL - SFO
1 stop6h 15mUnited Airlines
Tue 12/307:25 amSFO - BIL
2 stops12h 59mUnited Airlines
Deal found 12/20$840
This American Airlines deal was found by Cheapflights users on 12/19. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/266:50 amBIL - SFO
1 stop10h 08mAmerican Airlines
Tue 12/3011:20 amSFO - BIL
2 stops10h 34mAmerican Airlines
Deal found 12/19$949
This Alaska Airlines deal was found by Cheapflights users on 12/20. 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 12/263:27 pmBIL - STS
2 stops7h 50mAlaska Airlines
Tue 12/306:37 pmSTS - BIL
2 stops19h 10mAlaska Airlines
Deal found 12/20$1,236

Find flight deals from Billings to San Francisco Bay Area

Keep the following information in mind while searching for Billings to San Francisco Bay Area flight deals. Data was last updated December 21, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$220
(Kiwi.com)

Popular in

June

Cheapest in

May

Average price

$457
Provider with most accurate pricing for Billings Logan Intl-San Francisco flight deals.
Search Deals
Provider most trusted by Cheapflights users for Billings Logan Intl-San Francisco flights.
Search Deals
From Billings Logan Intl to San Francisco Bay Area
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($28 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Billings 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 December 21, 2025.
Use the filters below to find and compare flights from Billings to San Francisco Bay Area that are best for you.

Fly from

Billings

Fly to

San Francisco Bay Area

Route

Depart

Return

Price

BillingsSan Francisco

BIL - SFO

BILSFO

Billings Logan Intl

Sat 1/10

7:00 am-2:00 pm

1 stop8h 00m

San Francisco

Sat 1/17

7:57 am-1:22 pm

1 stop4h 25m

$220

BillingsOakland

BIL - OAK

BILOAK

Billings Logan Intl

Mon 1/26

3:35 pm-7:23 pm

1 stop4h 48m

Oakland

Wed 1/28

8:10 am-2:55 pm

1 stop5h 45m

$238

BillingsSan Francisco

BIL - SFO

BILSFO

Billings Logan Intl

Sat 1/17

3:35 pm-7:43 pm

1 stop5h 08m

San Francisco

Tue 1/20

4:46 pm-11:36 pm

1 stop5h 50m

$238

BillingsSan Jose

BIL - SJC

BILSJC

Billings Logan Intl

Sun 2/1

5:15 am-9:00 am

1 stop4h 45m

San Jose

Thu 2/5

5:54 am-11:03 am

1 stop4h 09m

$249

BillingsSan Francisco

BIL - SFO

BILSFO

Billings Logan Intl

Sat 1/10

5:15 am-1:38 pm

2 stops9h 23m

San Francisco

Sat 1/17

5:05 pm-10:31 pm

1 stop4h 26m

$251

BillingsSan Francisco

BIL - SFO

BILSFO

Billings Logan Intl

Mon 2/2

7:00 am-2:00 pm

1 stop8h 00m

San Francisco

Mon 2/9

9:42 pm-2:55 pm

2 stops16h 13m

$261

BillingsSanta Rosa

BIL - STS

BILSTS

Billings Logan Intl

Sat 2/28

7:00 am-9:52 pm

1 stop15h 52m

Santa Rosa Sonoma County

Tue 3/3

8:00 am-1:24 pm

1 stop4h 24m

$262

BillingsSan Jose

BIL - SJC

BILSJC

Billings Logan Intl

Wed 1/14

3:35 pm-9:21 am

2 stops18h 46m

San Jose

Sat 1/17

7:45 am-1:22 pm

1 stop4h 37m

$266

BillingsOakland

BIL - OAK

BILOAK

Billings Logan Intl

Wed 1/14

3:35 pm-4:23 pm

1 stop25h 48m

Oakland

Sun 1/18

5:17 pm-11:36 pm

1 stop5h 19m

$285

BillingsSan Francisco

BIL - SFO

BILSFO

Billings Logan Intl

Tue 4/21

5:45 am-9:09 am

1 stop4h 24m

San Francisco

Wed 4/29

6:00 am-11:00 am

1 stop4h 00m

$289

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/19

Showing 1-10 of 20 results
1
2

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

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

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

Currently, August is the cheapest month in which you can book a flight from Billings to San Francisco Bay Area (average of $137). Flying from Billings to San Francisco Bay Area in June is currently the most expensive (average of $332). 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 XIH?

Find hourly flight availability from Billings to San Francisco Bay Area. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 21, 2025.

A simple way to save on the total cost of your ticket is to fly from Billings to San Francisco Bay Area in the evening. If you’re flexible enough to do this you can expect to save up to 26% on your trip compared to booking a flight in the afternoon.

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 December 21, 2025.
Get a feel of what it's like to fly with Alaska Airlines and Delta from Billings to San Francisco Bay Area by reading reviews from past customers. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,494 reviews

Entertainment

7.0

Crew

8.5

Overall

8.0

Boarding

8.1

Food

7.1

Comfort

7.8

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
11,494 reviews
Alaska Airlines
8.0
Very good
11,494 reviews

Entertainment

7.0

Crew

8.5

Overall

8.0

Boarding

8.1

Food

7.1

Comfort

7.8

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
8,019 reviews
Alaska Airlines
8.0
Very good
11,494 reviews

Entertainment

7.0

Crew

8.5

Overall

8.0

Boarding

8.1

Food

7.1

Comfort

7.8

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 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 Billings to San Francisco Bay Area?

    If you book a flight to San Francisco Bay Area from Billings, you will be flying from Billings Logan Intl, which is the city’s only airport. Billings Logan Intl (BIL) is located 2.7 mi from the center of Billings.

  • How long is the flight from Billings to San Francisco Bay Area?

    Departing from Billings to San Francisco Bay Area will take you 4h 45m. There are 902 mi between Billings and San Francisco Bay Area. This flight may include one or multiple stops.

  • What are the most popular routes from Billings to San Francisco Bay Area?

    The most popular route from Billings to San Francisco Bay Area is Billings Logan Intl - San Francisco. You may also consider Billings Logan Intl - San Jose or Billings Logan Intl - Oakland.

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

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

  • How can I find direct flights from Billings 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 Billings to San Francisco Bay Area.

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

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

    Currently, August is the cheapest month in which you can book a flight from Billings to San Francisco Bay Area (average of $137). Flying from Billings to San Francisco Bay Area in June is currently the most expensive (average of $332). 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 2 airlines flying from Billings to San Francisco Bay Area

Discover the top 2 airlines that operate flights from Billings 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 December 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$167Average$432FlexibilityNo cancel feeOn-time75%
DeltaCheapest$236Average$330FlexibilityNo cancel feeOn-timeN/A

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