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San Francisco Bay Area

$109+ Cheap flights from Billings (BIL) to San Francisco Bay Area

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 3/21. Fares are subject to change and may not be available on all flights or dates of travel.
BIL — SFO
Mar 6 — Mar 131
Fri 3/6
Fri 3/13
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 February 4, 2026.

This Delta deal was found by Cheapflights users on 2/4. 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 3/286:21 pm
BIL
-
SFO
1 stop4h 54m
Delta
Tue 3/315:01 pm
SFO
-
BIL
1 stop4h 28m
Delta
Deal found 2/4$217
This Delta deal was found by Cheapflights users on 2/4. 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 5/56:18 pm
BIL
-
SFO
1 stop6h 41m
Delta
Fri 5/84:59 pm
SFO
-
BIL
1 stop4h 53m
Delta
Deal found 2/4$244
This Delta deal was found by Cheapflights users on 2/2. 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 5/85:35 am
BIL
-
SJC
1 stop4h 23m
Delta
Wed 5/135:00 pm
SJC
-
BIL
1 stop4h 52m
Delta
Deal found 2/2$244
This Alaska Airlines deal was found by Cheapflights users on 2/2. 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 4/2412:49 pm
BIL
-
SFO
1 stop4h 57m
Alaska Airlines
Tue 4/287:40 am
SFO
-
BIL
1 stop4h 46m
Alaska Airlines
Deal found 2/2$261
This Delta deal was found by Cheapflights users on 2/1. 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.
Mon 3/26:15 pm
BIL
-
SFO
1 stop6h 39m
Delta
Mon 3/95:01 pm
SFO
-
BIL
1 stop4h 28m
Delta
Deal found 2/1$271
This Delta deal was found by Cheapflights users on 2/2. 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 2/276:15 pm
BIL
-
OAK
1 stop6h 36m
Delta
Tue 3/35:55 am
OAK
-
BIL
1 stop4h 05m
Delta
Deal found 2/2$275
This United Airlines deal was found by Cheapflights users on 2/3. 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 2/245:53 pm
BIL
-
SFO
1 stop6h 24m
United Airlines
Sat 2/285:10 am
SFO
-
BIL
1 stop7h 13m
United Airlines
Deal found 2/3$287
This CheapOair deal was found by Cheapflights users on 2/1. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/37:00 am
BIL
-
SJC
1 stop7h 42m
Alaska Airlines
Tue 3/107:40 am
SJC
-
BIL
1 stop4h 44m
Alaska Airlines
Deal found 2/1$291
This Alaska Airlines deal was found by Cheapflights users on 2/2. 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 4/1712:34 pm
BIL
-
SJC
1 stop7h 58m
Alaska Airlines
Mon 4/207:05 pm
SJC
-
BIL
1 stop27h 53m
Alaska Airlines
Deal found 2/2$304
This Delta deal was found by Cheapflights users on 2/1. 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 3/35:10 am
BIL
-
SFO
2 stops11h 41m
Delta
Tue 3/105:01 pm
SFO
-
BIL
1 stop4h 28m
Delta
Deal found 2/1$310
This Alaska Airlines deal was found by Cheapflights users on 2/1. 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.
Mon 3/23:32 pm
BIL
-
SFO
1 stop5h 15m
Alaska Airlines
Mon 3/99:32 pm
SFO
-
BIL
2 stops14h 52m
Alaska Airlines
Deal found 2/1$312
This Alaska Airlines deal was found by Cheapflights users on 2/2. 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.
Wed 2/253:32 pm
BIL
-
STS
1 stop18h 42m
Alaska Airlines
Sat 2/288:00 am
STS
-
BIL
1 stop4h 24m
Alaska Airlines
Deal found 2/2$313

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 February 4, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$217
(Delta)

One-way from

$136
(Delta)

Popular in

December

Cheapest in

September

Average price

$274
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
One-way flight from Billings Logan Intl to San Francisco Bay Area
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($35 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 February 2026
Search Deals

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 February 4, 2026.
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 3/28

6:21 pm-10:15 pm

1 stop4h 54m

San Francisco

Tue 3/31

5:01 pm-10:29 pm

1 stop4h 28m

$217

BillingsSan Francisco

BIL - SFO

BILSFO

Billings Logan Intl

Tue 5/5

6:18 pm-11:59 pm

1 stop6h 41m

San Francisco

Fri 5/8

4:59 pm-10:52 pm

1 stop4h 53m

$244

BillingsSan Francisco

BIL - SFO

BILSFO

Billings Logan Intl

Fri 2/27

6:15 pm-11:54 pm

1 stop6h 39m

San Francisco

Tue 3/3

5:55 am-11:00 am

1 stop4h 05m

$244

BillingsSan Jose

BIL - SJC

BILSJC

Billings Logan Intl

Fri 5/8

5:35 am-8:58 am

1 stop4h 23m

San Jose

Wed 5/13

5:00 pm-10:52 pm

1 stop4h 52m

$244

BillingsSan Francisco

BIL - SFO

BILSFO

Billings Logan Intl

Fri 4/24

12:49 pm-4:46 pm

1 stop4h 57m

San Francisco

Tue 4/28

7:40 am-1:26 pm

1 stop4h 46m

$261

BillingsSan Francisco

BIL - SFO

BILSFO

Billings Logan Intl

Mon 3/2

6:15 pm-11:54 pm

1 stop6h 39m

San Francisco

Mon 3/9

5:01 pm-10:29 pm

1 stop4h 28m

$271

BillingsOakland

BIL - OAK

BILOAK

Billings Logan Intl

Fri 2/27

6:15 pm-11:51 pm

1 stop6h 36m

Oakland

Tue 3/3

5:55 am-11:00 am

1 stop4h 05m

$275

BillingsSan Francisco

BIL - SFO

BILSFO

Billings Logan Intl

Fri 5/8

6:20 pm-9:30 pm

1 stop4h 10m

San Francisco

Wed 5/13

6:00 am-10:54 am

1 stop3h 54m

$278

BillingsSan Francisco

BIL - SFO

BILSFO

Billings Logan Intl

Tue 2/24

5:53 pm-11:17 pm

1 stop6h 24m

San Francisco

Sat 2/28

5:10 am-1:23 pm

1 stop7h 13m

$287

BillingsSan Jose

BIL - SJC

BILSJC

Billings Logan Intl

Fri 4/17

12:34 pm-7:32 pm

1 stop7h 58m

San Jose

Mon 4/20

7:05 pm-11:58 pm

1 stop27h 53m

$304

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/4

Showing 1-10 of 48 results
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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 $331). 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 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 February 4, 2026.
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
11,839 reviews

Entertainment

7.0

Food

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Alaska Airlines
8.0
Very good
11,839 reviews
Alaska Airlines
8.0
Very good
11,839 reviews

Entertainment

7.0

Food

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Delta
7.9
Good
8,146 reviews
Alaska Airlines
8.0
Very good
11,839 reviews

Entertainment

7.0

Food

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading

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 54m. There are 908 mi between Billings and San Francisco Bay Area. This flight may include one or multiple stops.

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

    $118 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on Alaska Airlines and United Airlines, with prices starting from $122 and $234, respectively.

  • 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 $331). 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 February 4, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$137Average$331FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$167Average$421FlexibilityNo cancel feeOn-time75%

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