HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
San Francisco

$162+ Cheap flights from Billings to San Francisco (BIL - SFO)

BIL — SFO
Oct 17 — Oct 241
Sat 10/17
Sat 10/24
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Billings 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 Billings to San Francisco

Cheapest flights from Billings to San Francisco

Mon 11/27:59 pm -
1 stop13h 20m
Thu 11/1210:23 pm -
1 stop9h 51m
Deal found 9/15$209
Sat 12/53:32 pm -
1 stop5h 05m
Wed 12/96:00 am -
1 stop15h 58m
Deal found 9/15$393
Mon 11/27:18 am -
1 stop16h 27m
Mon 11/96:59 pm -
1 stop18h 53m
Deal found 9/15$398
Thu 12/33:32 pm -
1 stop5h 05m
Sun 12/67:00 am -
1 stop27h 24m
Deal found 9/15$418
Mon 11/25:12 pm -
2 stops16h 48m
Thu 11/129:43 am -
2 stops12h 00m
Deal found 9/15$425
Tue 10/273:44 pm -
1 stop6h 44m
Sun 11/18:58 pm -
1 stop13h 17m
Deal found 9/13$430
Thu 11/511:55 am -
1 stop5h 06m
Sun 11/87:42 am -
1 stop6h 10m
Deal found 9/15$435

Find flight deals from Billings to San Francisco

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$209
(Kiwi.com)

One-way from

$162
(Kiwi.com)

Popular in

August

Cheapest in

February

Average price

$416
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
Search Deals
One-way flight from Billings Logan Intl to San Francisco
Search Deals
Highest demand for flights based on searches. 19% potential increase in price ($98 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($25 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2026
Search Deals

Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Billings to San Francisco that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BillingsSan Francisco

BIL Billings Logan Intl - SFO San Francisco

BILSFO

Billings Logan Intl

Mon 9/28

5:22 pm-8:14 am

1 stop15h 52m

San Francisco

Wed 12/31

12:00 am-1:00 am

Nonstop0h 00m

$162

BillingsSan Francisco

BIL Billings Logan Intl - SFO San Francisco

BILSFO

Billings Logan Intl

Fri 10/16

10:22 pm-8:38 pm

2 stops23h 16m

San Francisco

Wed 12/31

12:00 am-1:00 am

Nonstop0h 00m

$201

BillingsSan Francisco

BIL Billings Logan Intl - SFO San Francisco

BILSFO

Billings Logan Intl

Mon 11/2

7:59 pm-8:32 pm

2 stops25h 33m

San Francisco

Thu 11/12

10:23 pm-9:14 am

1 stop9h 51m

$254
Quickest round-trip

BillingsSan Francisco

BIL Billings Logan Intl - SFO San Francisco

BILSFO

Billings Logan Intl

Tue 11/24

7:20 am-12:02 pm

1 stop5h 42m

San Francisco

Wed 12/31

12:00 am-1:00 am

Nonstop0h 00m

$364

BillingsSan Francisco

BIL Billings Logan Intl - SFO San Francisco

BILSFO

Billings Logan Intl

Sun 9/27

6:33 pm-11:59 pm

1 stop6h 26m

San Francisco

Wed 12/31

12:00 am-1:00 am

Nonstop0h 00m

$373

BillingsSan Francisco

BIL Billings Logan Intl - SFO San Francisco

BILSFO

Billings Logan Intl

Sat 12/5

3:32 pm-7:37 pm

1 stop5h 05m

San Francisco

Wed 12/9

7:40 am-2:52 pm

1 stop6h 12m

$393

BillingsSan Francisco

BIL Billings Logan Intl - SFO San Francisco

BILSFO

Billings Logan Intl

Sat 10/24

3:44 pm-7:47 pm

1 stop5h 03m

San Francisco

Wed 10/28

9:03 am-3:04 pm

1 stop5h 01m

$393

BillingsSan Francisco

BIL Billings Logan Intl - SFO San Francisco

BILSFO

Billings Logan Intl

Mon 11/2

7:18 am-10:45 pm

1 stop16h 27m

San Francisco

Mon 11/9

6:59 pm-2:52 pm

1 stop18h 53m

$398

BillingsSan Francisco

BIL Billings Logan Intl - SFO San Francisco

BILSFO

Billings Logan Intl

Thu 1/28

7:00 am-10:56 pm

1 stop16h 56m

San Francisco

Sun 1/31

9:25 am-11:29 am

1 stop25h 04m

$418

BillingsSan Francisco

BIL Billings Logan Intl - SFO San Francisco

BILSFO

Billings Logan Intl

Sun 9/27

5:57 pm-7:26 am

2 stops14h 29m

San Francisco

Wed 12/31

12:00 am-1:00 am

Nonstop0h 00m

$435

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/12

Sorted by cheapest first

Compare providers for flights from Billings to San Francisco

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 September.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star

*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

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, February is the cheapest month in which you can book a flight from Billings to San Francisco (average of $274). Flying from Billings to San Francisco in August is currently the most expensive (average of $678). 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

Get a feel of what it's like to fly with Alaska Airlines,Delta, andUnited 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
7.9
Good
12,937 reviews

Food

7.0

Comfort

7.8

Entertainment

7.0

Crew

8.5

Boarding

8.1

Overall

7.9

Reviews

1 / 20
2.0
Mediocre

Chris,Aug 2026

GEG - SFO

Our flight was delayed multiple times over the course of the day for a total of almost ten hours. It was supposed to be a two-hour flight from San Francisco to Spokane. It turned into a nightmare of waiting all day in the airport, not knowing whether we would fly or not, whether we would miss my son's wedding and lose the expenses already incurred for car rental and accommodations. The Alaska staff seemed clueless and never gave us any convincing or definitive information. The airline offered food vouchers and discounts on future flights to make up for the trouble. However, the information about these concessions was not timely, nor were the vouchers themselves very useful. We were a family group of four people. The airline decided to give us one food voucher for $96, which is barely enough for four to get a sandwich and a drink each. Only by persistently addressing the airport food retailers were we able to get anything at all. Then, taking the exact opposite approach, the airline sent me, the original purchaser of all four tickets and the only email account they had, four vouchers for $150 each in the names of each of the four passengers. So, any one of us could get a discount on a future flight with Alaska in that amount. But I originally paid for all the tickets. It makes no sense, except to suggest that Alaska chooses the way to distribute vouchers that seems most likely to minimize the probability that they will be utilized. In my opinion, I should be offered a total refund for the ordeal we were forced to endure or at least a discount voucher for the entire $600.
Alaska Airlines
7.9
Good
12,937 reviews
Alaska Airlines
7.9
Good
12,937 reviews

Food

7.0

Comfort

7.8

Entertainment

7.0

Crew

8.5

Boarding

8.1

Overall

7.9

Reviews

1 / 20
2.0
Mediocre

Chris,Aug 2026

GEG - SFO

Our flight was delayed multiple times over the course of the day for a total of almost ten hours. It was supposed to be a two-hour flight from San Francisco to Spokane. It turned into a nightmare of waiting all day in the airport, not knowing whether we would fly or not, whether we would miss my son's wedding and lose the expenses already incurred for car rental and accommodations. The Alaska staff seemed clueless and never gave us any convincing or definitive information. The airline offered food vouchers and discounts on future flights to make up for the trouble. However, the information about these concessions was not timely, nor were the vouchers themselves very useful. We were a family group of four people. The airline decided to give us one food voucher for $96, which is barely enough for four to get a sandwich and a drink each. Only by persistently addressing the airport food retailers were we able to get anything at all. Then, taking the exact opposite approach, the airline sent me, the original purchaser of all four tickets and the only email account they had, four vouchers for $150 each in the names of each of the four passengers. So, any one of us could get a discount on a future flight with Alaska in that amount. But I originally paid for all the tickets. It makes no sense, except to suggest that Alaska chooses the way to distribute vouchers that seems most likely to minimize the probability that they will be utilized. In my opinion, I should be offered a total refund for the ordeal we were forced to endure or at least a discount voucher for the entire $600.
Delta
7.8
Good
8,579 reviews
Alaska Airlines
7.9
Good
12,937 reviews

Food

7.0

Comfort

7.8

Entertainment

7.0

Crew

8.5

Boarding

8.1

Overall

7.9

Reviews

1 / 20
2.0
Mediocre

Chris,Aug 2026

GEG - SFO

Our flight was delayed multiple times over the course of the day for a total of almost ten hours. It was supposed to be a two-hour flight from San Francisco to Spokane. It turned into a nightmare of waiting all day in the airport, not knowing whether we would fly or not, whether we would miss my son's wedding and lose the expenses already incurred for car rental and accommodations. The Alaska staff seemed clueless and never gave us any convincing or definitive information. The airline offered food vouchers and discounts on future flights to make up for the trouble. However, the information about these concessions was not timely, nor were the vouchers themselves very useful. We were a family group of four people. The airline decided to give us one food voucher for $96, which is barely enough for four to get a sandwich and a drink each. Only by persistently addressing the airport food retailers were we able to get anything at all. Then, taking the exact opposite approach, the airline sent me, the original purchaser of all four tickets and the only email account they had, four vouchers for $150 each in the names of each of the four passengers. So, any one of us could get a discount on a future flight with Alaska in that amount. But I originally paid for all the tickets. It makes no sense, except to suggest that Alaska chooses the way to distribute vouchers that seems most likely to minimize the probability that they will be utilized. In my opinion, I should be offered a total refund for the ordeal we were forced to endure or at least a discount voucher for the entire $600.
United Airlines
7.4
Good
10,214 reviews
Alaska Airlines
7.9
Good
12,937 reviews

Food

7.0

Comfort

7.8

Entertainment

7.0

Crew

8.5

Boarding

8.1

Overall

7.9

Reviews

1 / 20
2.0
Mediocre

Chris,Aug 2026

GEG - SFO

Our flight was delayed multiple times over the course of the day for a total of almost ten hours. It was supposed to be a two-hour flight from San Francisco to Spokane. It turned into a nightmare of waiting all day in the airport, not knowing whether we would fly or not, whether we would miss my son's wedding and lose the expenses already incurred for car rental and accommodations. The Alaska staff seemed clueless and never gave us any convincing or definitive information. The airline offered food vouchers and discounts on future flights to make up for the trouble. However, the information about these concessions was not timely, nor were the vouchers themselves very useful. We were a family group of four people. The airline decided to give us one food voucher for $96, which is barely enough for four to get a sandwich and a drink each. Only by persistently addressing the airport food retailers were we able to get anything at all. Then, taking the exact opposite approach, the airline sent me, the original purchaser of all four tickets and the only email account they had, four vouchers for $150 each in the names of each of the four passengers. So, any one of us could get a discount on a future flight with Alaska in that amount. But I originally paid for all the tickets. It makes no sense, except to suggest that Alaska chooses the way to distribute vouchers that seems most likely to minimize the probability that they will be utilized. In my opinion, I should be offered a total refund for the ordeal we were forced to endure or at least a discount voucher for the entire $600.

Related info for your journey

  • 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 05m. Fly via Alaska Airlines to get the fastest option. There are 908 mi between Billings and San Francisco.

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

    According to our current data, United Airlines ($254), Delta ($258), and Alaska Airlines ($274) offers the cheapest pricing from Billings to San Francisco. These flights start at 37% 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, February is the cheapest month in which you can book a flight from Billings to San Francisco (average of $274). Flying from Billings to San Francisco in August is currently the most expensive (average of $678). 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
South San Francisco
Santa Clara
Santa Cruz
Walnut Creek
Emeryville
San Bruno
Burlingame
Rancho Cordova
Roseville
Fairfield
Hayward
Cupertino
Newark
San Ramon
Redwood City
Manteca
Vallejo
San Carlos
Turlock
Davis

Browse thousands of different options on Cheapflights for your next trip

Top 3 airlines flying from Billings to San Francisco

AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$254Average$439FlexibilityNo cancel feeOn-time69%
DeltaCheapest$258Average$410FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$274Average$306FlexibilityNo cancel feeOn-time75%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.