$142+ Cheap flights from San Francisco to Billings (SFO - BIL)
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 9/3. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — BIL
May 8 — May 151
Round-trip
1 adult, Economy
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Find cheap flights from San Francisco to Billings 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
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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 San Francisco to Billings
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Cheapest flights from San Francisco to BillingsExplore the most affordable flight options available from San Francisco to Billings. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 8, 2026.
Explore the most affordable flight options available from San Francisco to Billings. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 8, 2026.
This SmartFares deal was found by Cheapflights users on 4/5. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/2410:14 am
SFO
- BIL
1 stop7h 27m
Alaska Airlines
Tue 6/23:34 pm
BIL
- SFO
1 stop5h 22m
Alaska Airlines
Deal found 4/5![Alaska Airlines logo]()
$315
This United Airlines deal was found by Cheapflights users on 4/5. 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.
Wed 8/125:00 am
SFO
- BIL
1 stop7h 20m
United Airlines
Wed 8/195:57 pm
BIL
- SFO
1 stop5h 59m
United Airlines
Deal found 4/5![United Airlines logo]()
$349
This Delta deal was found by Cheapflights users on 4/7. 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 6/195:25 pm
SFO
- BIL
1 stop4h 21m
Delta
Wed 6/245:18 am
BIL
- SFO
1 stop4h 38m
Delta
Deal found 4/7![Delta logo]()
$369
This Delta deal was found by Cheapflights users on 4/4. 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.
Mon 6/14:55 pm
SFO
- BIL
1 stop4h 57m
Delta
Wed 6/35:30 am
BIL
- SFO
1 stop4h 23m
Delta
Deal found 4/4![Delta logo]()
$374
This Expedia deal was found by Cheapflights users on 4/4. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/16:58 pm
SFO
- BIL
1 stop19h 04m
Alaska Airlines
Sun 10/46:00 am
BIL
- SFO
1 stop5h 27m
Alaska Airlines
Deal found 4/4![Alaska Airlines logo]()
$379
This Kiwi.com deal was found by Cheapflights users on 4/7. 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.
Mon 6/155:11 pm
SFO
- BIL
2 stops19h 32m
Multiple Airlines
Sat 6/203:33 pm
BIL
- SFO
1 stop25h 43m
Multiple Airlines
Deal found 4/7![Multiple Airlines logo]()
$380
This Kiwi.com deal was found by Cheapflights users on 4/8. 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.
Sun 6/2110:58 pm
SFO
- BIL
1 stop9h 12m
Multiple Airlines
Fri 6/2610:00 am
BIL
- SFO
1 stop10h 56m
Multiple Airlines
Deal found 4/8![Multiple Airlines logo]()
$381
This Delta deal was found by Cheapflights users on 4/5. 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 5/265:40 am
SFO
- BIL
1 stop4h 14m
Delta
Sun 5/315:30 am
BIL
- SFO
1 stop4h 23m
Delta
Deal found 4/5![Delta logo]()
$384
This Kiwi.com deal was found by Cheapflights users on 4/7. 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.
Sat 6/139:35 pm
SFO
- BIL
2 stops18h 10m
Multiple Airlines
Sat 6/203:33 pm
BIL
- SFO
1 stop25h 43m
Multiple Airlines
Deal found 4/7![Multiple Airlines logo]()
$386
This Alaska Airlines deal was found by Cheapflights users on 4/7. 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 8/196:56 pm
SFO
- BIL
2 stops19h 06m
Alaska Airlines
Fri 8/217:20 pm
BIL
- SFO
1 stop5h 16m
Alaska Airlines
Deal found 4/7![Alaska Airlines logo]()
$393
This Delta deal was found by Cheapflights users on 4/6. 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.
Wed 6/31:35 pm
SFO
- BIL
2 stops8h 17m
Delta
Sun 6/75:18 am
BIL
- SFO
1 stop4h 38m
Delta
Deal found 4/6![Delta logo]()
$407
Best flights from San Francisco to BillingsDiscover carefully curated flight deals from San Francisco to Billings that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 8, 2026.
Discover carefully curated flight deals from San Francisco to Billings that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 8, 2026.
This Delta deal was found by Cheapflights users on 4/5. 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 7/215:16 pm
SFO
- BIL
1 stop4h 31m
Delta
Sat 7/255:18 am
BIL
- SFO
1 stop4h 28m
Delta
Deal found 4/5![Delta logo]()
$349
This United Airlines deal was found by Cheapflights users on 4/5. 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.
Wed 8/125:00 am
SFO
- BIL
1 stop7h 20m
United Airlines
Wed 8/195:57 pm
BIL
- SFO
1 stop5h 59m
United Airlines
Deal found 4/5![United Airlines logo]()
$349
This Kiwi.com deal was found by Cheapflights users on 4/8. 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.
Sun 6/2110:58 pm
SFO
- BIL
1 stop9h 12m
Multiple Airlines
Fri 6/2610:00 am
BIL
- SFO
1 stop10h 56m
Multiple Airlines
Deal found 4/8![Multiple Airlines logo]()
$381
This Alaska Airlines deal was found by Cheapflights users on 4/7. 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 8/196:56 pm
SFO
- BIL
2 stops19h 06m
Alaska Airlines
Fri 8/217:20 pm
BIL
- SFO
1 stop5h 16m
Alaska Airlines
Deal found 4/7![Alaska Airlines logo]()
$393
This Delta deal was found by Cheapflights users on 4/5. 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.
Wed 8/125:00 pm
SFO
- BIL
1 stop4h 27m
Delta
Wed 8/195:45 am
BIL
- SFO
1 stop4h 24m
Delta
Deal found 4/5![Delta logo]()
$349
This Delta deal was found by Cheapflights users on 4/4. 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 7/259:41 am
SFO
- BIL
1 stop7h 12m
Delta
Sat 8/15:18 am
BIL
- SFO
1 stop4h 28m
Delta
Deal found 4/4![Delta logo]()
$349
This Alaska Airlines deal was found by Cheapflights users on 4/5. 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 8/127:20 am
SFO
- BIL
2 stops10h 22m
Alaska Airlines
Wed 8/197:20 pm
BIL
- SFO
1 stop5h 16m
Alaska Airlines
Deal found 4/5![Alaska Airlines logo]()
$411
This Kiwi.com deal was found by Cheapflights users on 4/6. 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.
Thu 5/2111:36 am
SFO
- BIL
1 stop20h 34m
Multiple Airlines
Tue 5/262:41 pm
BIL
- SFO
1 stop26h 49m
Multiple Airlines
Deal found 4/6![Multiple Airlines logo]()
$411
This Delta deal was found by Cheapflights users on 4/4. 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 8/156:00 am
SFO
- BIL
1 stop4h 00m
Delta
Thu 8/205:45 am
BIL
- SFO
1 stop4h 24m
Delta
Deal found 4/4![Delta logo]()
$349
This Delta deal was found by Cheapflights users on 4/4. 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.
Mon 6/14:55 pm
SFO
- BIL
1 stop4h 57m
Delta
Wed 6/35:30 am
BIL
- SFO
1 stop4h 23m
Delta
Deal found 4/4![Delta logo]()
$374
This Delta deal was found by Cheapflights users on 4/5. 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 5/265:40 am
SFO
- BIL
1 stop4h 14m
Delta
Sun 5/315:30 am
BIL
- SFO
1 stop4h 23m
Delta
Deal found 4/5![Delta logo]()
$384
This Delta deal was found by Cheapflights users on 4/7. 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 6/135:05 pm
SFO
- BIL
1 stop4h 46m
Delta
Sat 6/205:18 am
BIL
- SFO
1 stop4h 33m
Delta
Deal found 4/7![Delta logo]()
$424
Last-minute flights from San Francisco to BillingsDiscover last-minute flight deals from San Francisco to Billings. Data last updated April 8, 2026 and is based on user searches.
Discover last-minute flight deals from San Francisco to Billings. Data last updated April 8, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 4/5. 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 4/205:40 am
SFO
- BIL
1 stop4h 13m
Delta
Sun 4/265:20 am
BIL
- SFO
1 stop4h 35m
Delta
Deal found 4/5![Delta logo]()
$484
This Kiwi.com deal was found by Cheapflights users on 4/6. 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.
Thu 5/2111:36 am
SFO
- BIL
1 stop20h 34m
Multiple Airlines
Tue 5/262:41 pm
BIL
- SFO
1 stop26h 49m
Multiple Airlines
Deal found 4/6![Multiple Airlines logo]()
$411
This Expedia deal was found by Cheapflights users on 4/6. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/219:57 am
SFO
- BIL
2 stops12h 36m
Alaska Airlines
Tue 5/267:21 pm
BIL
- SFO
2 stops14h 19m
Alaska Airlines
Deal found 4/6![Alaska Airlines logo]()
$538
This Alaska Airlines deal was found by Cheapflights users on 4/5. 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.
Sat 5/237:40 am
SFO
- BIL
1 stop6h 14m
Alaska Airlines
Tue 5/267:21 pm
BIL
- SFO
1 stop14h 57m
Alaska Airlines
Deal found 4/5![Alaska Airlines logo]()
$455
This SmartFares deal was found by Cheapflights users on 4/5. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/2410:14 am
SFO
- BIL
1 stop7h 27m
Alaska Airlines
Tue 6/23:34 pm
BIL
- SFO
1 stop5h 22m
Alaska Airlines
Deal found 4/5![Alaska Airlines logo]()
$315
This Delta deal was found by Cheapflights users on 4/5. 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 5/265:40 am
SFO
- BIL
1 stop4h 14m
Delta
Sun 5/315:30 am
BIL
- SFO
1 stop4h 23m
Delta
Deal found 4/5![Delta logo]()
$384
This Alaska Airlines deal was found by Cheapflights users on 4/5. 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 5/266:01 pm
SFO
- BIL
2 stops18h 20m
Alaska Airlines
Sun 5/316:00 am
BIL
- SFO
1 stop6h 00m
Alaska Airlines
Deal found 4/5![Alaska Airlines logo]()
$473
One-way flights from San Francisco to BillingsSearch for one-way flight options from San Francisco to Billings. Find affordable one-way fares based on user searches. Data last updated April 8, 2026.
Search for one-way flight options from San Francisco to Billings. Find affordable one-way fares based on user searches. Data last updated April 8, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/7. 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.
Thu 9/310:50 pm
SFO
- BIL
1 stop16h 11m
Multiple Airlines
Deal found 4/7![Multiple Airlines logo]()
$142
This Orbitz deal was found by Cheapflights users on 4/7. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/23:23 pm
SFO
- BIL
1 stop7h 06m
Alaska Airlines
Deal found 4/7![Alaska Airlines logo]()
$175
This Delta deal was found by Cheapflights users on 4/4. 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.
Wed 7/296:00 am
SFO
- BIL
1 stop4h 08m
Delta
Deal found 4/4![Delta logo]()
$210
This Kiwi.com deal was found by Cheapflights users on 4/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/35:47 pm
SFO
- BIL
3 stops20h 03m
Multiple Airlines
Deal found 4/4![Multiple Airlines logo]()
$213
This Kiwi.com deal was found by Cheapflights users on 4/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/297:54 pm
SFO
- BIL
2 stops20h 12m
Multiple Airlines
Deal found 4/4![Multiple Airlines logo]()
$225
This Travelocity deal was found by Cheapflights users on 4/4. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/158:23 am
SFO
- BIL
1 stop9h 18m
Alaska Airlines
Deal found 4/4![Alaska Airlines logo]()
$260
Find flight deals from San Francisco to Billings
Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to Billings (BIL). 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 April 8, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $315 (SmartFares) |
One-way from | $142 (Kiwi.com) |
Popular in | December |
Cheapest in | February |
Average price | $475 |
Cheapflights Fare Finder
Customize your flight search to find flights from San Francisco to Billings 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 April 8, 2026.
Use the filters below to find and compare flights from San Francisco to Billings that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
San FranciscoBillings
SFO - BIL
SFOBIL
San Francisco
Tue 7/21
5:16 pm-10:47 pm
1 stop4h 31m
Billings Logan Intl
Sat 7/25
5:18 am-8:46 am
1 stop4h 28m
$349
San FranciscoBillings
SFO - BIL
SFOBIL
San Francisco
Wed 8/12
5:00 am-1:20 pm
1 stop7h 20m
Billings Logan Intl
Wed 8/19
5:57 pm-10:56 pm
1 stop5h 59m
$349
San FranciscoBillings
SFO - BIL
SFOBIL
San Francisco
Wed 8/12
5:00 pm-10:27 pm
1 stop4h 27m
Billings Logan Intl
Wed 8/19
5:45 am-9:09 am
1 stop4h 24m
$349
San FranciscoBillings
SFO - BIL
SFOBIL
San Francisco
Sat 7/25
9:41 am-5:53 pm
1 stop7h 12m
Billings Logan Intl
Sat 8/1
5:18 am-8:46 am
1 stop4h 28m
$349
Quickest round-trip
San FranciscoBillings
SFO - BIL
SFOBIL
San Francisco
Sat 8/15
6:00 am-11:00 am
1 stop4h 00m
Billings Logan Intl
Thu 8/20
5:45 am-9:09 am
1 stop4h 24m
$349
San FranciscoBillings
SFO - BIL
SFOBIL
San Francisco
Mon 6/1
4:55 pm-10:52 pm
1 stop4h 57m
Billings Logan Intl
Wed 6/3
5:30 am-8:53 am
1 stop4h 23m
$374
San FranciscoBillings
SFO - BIL
SFOBIL
San Francisco
Sun 6/21
10:58 pm-9:10 am
1 stop9h 12m
Billings Logan Intl
Fri 6/26
10:00 am-7:56 pm
1 stop10h 56m
$381
San FranciscoBillings
SFO - BIL
SFOBIL
San Francisco
Tue 5/26
5:40 am-10:54 am
1 stop4h 14m
Billings Logan Intl
Sun 5/31
5:30 am-8:53 am
1 stop4h 23m
$384
San FranciscoBillings
SFO - BIL
SFOBIL
San Francisco
Wed 8/19
6:56 pm-3:02 pm
2 stops19h 06m
Billings Logan Intl
Fri 8/21
7:20 pm-11:36 pm
1 stop5h 16m
$393
San FranciscoBillings
SFO - BIL
SFOBIL
San Francisco
Wed 8/12
7:20 am-6:42 pm
2 stops10h 22m
Billings Logan Intl
Wed 8/19
7:20 pm-11:36 pm
1 stop5h 16m
$411
Showing 1-10 of 16 resultsSorted by cheapest first
Compare providers for flights from San Francisco to Billings
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 San Francisco to Billings in April.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on San Francisco-Billings flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Francisco-Billings flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Francisco-Billings flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on San Francisco-Billings 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 San Francisco-Billings 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 San Francisco to Billings
Have a flexible travel schedule? Discover the best time to fly to Billings from San Francisco with our price prediction graph.
SFO-BIL
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 San Francisco to Billings
What is the cheapest month to book a flight from San Francisco to Billings?
Currently, June is the cheapest month in which you can book a flight from San Francisco to Billings (average of $248). Flying from San Francisco to Billings in November is currently the most expensive (average of $363). 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.
How much does it cost to fly round-trip from San Francisco to Billings?
Reviews of airlines servicing Billings
Get insights into the airlines that provide service to Billings. 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 Billings. Reviews last updated April 8, 2026.
Get a feel of what it's like to fly with Alaska Airlines,Delta, andUnited Airlines from San Francisco to Billings by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.5
Overall
7.9
Entertainment
7.0
Boarding
8.1
Comfort
7.8
Food
7.0
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Crew
8.5
Overall
7.9
Entertainment
7.0
Boarding
8.1
Comfort
7.8
Food
7.0
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Crew
8.5
Overall
7.9
Entertainment
7.0
Boarding
8.1
Comfort
7.8
Food
7.0
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Crew
8.5
Overall
7.9
Entertainment
7.0
Boarding
8.1
Comfort
7.8
Food
7.0
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
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Top 3 airlines flying from San Francisco to Billings
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| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$254 | Average$368 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$271 | Average$553 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$299 | Average$370 | FlexibilityNo cancel fee | On-time69% |