$122 Cheap United flights from Billings to San Francisco (BIL to SFO)

Find The Best Day To Fly from Billings to San Francisco

Amazing United BIL to SFO Flight Deals

The cheapest flights to San Francisco Intl. found within the past 7 days were $238 round trip and $122 one way. Prices and availability subject to change. Additional terms may apply.

Sat, Aug 23 - Sat, Aug 30
BIL
Billings
SFO
San Francisco
$238 Roundtrip, found 14 hours ago
$238
Roundtrip
found 14 hours ago
Select United flight, departing Sat, Aug 23 from Billings to San Francisco, returning Sat, Aug 30, priced at $238 found 14 hours ago
Sat, Aug 23 - Sat, Aug 30
BIL
Billings
SFO
San Francisco
$273 Roundtrip, found 14 hours ago
$273
Roundtrip
found 14 hours ago
Select United flight, departing Sat, Aug 23 from Billings to San Francisco, returning Sat, Aug 30, priced at $273 found 14 hours ago
Sat, Aug 23 - Sat, Aug 30
BIL
Billings
SFO
San Francisco
$276 Roundtrip, found 14 hours ago
$276
Roundtrip
found 14 hours ago
Select United flight, departing Sat, Aug 23 from Billings to San Francisco, returning Sat, Aug 30, priced at $276 found 14 hours ago
Fri, Aug 22 - Sat, Aug 30
BIL
Billings
SFO
San Francisco
$283 Roundtrip, found 14 hours ago
$283
Roundtrip
found 14 hours ago
Select United flight, departing Fri, Aug 22 from Billings to San Francisco, returning Sat, Aug 30, priced at $283 found 14 hours ago
Fri, Aug 22 - Sat, Aug 30
BIL
Billings
SFO
San Francisco
$286 Roundtrip, found 14 hours ago
$286
Roundtrip
found 14 hours ago
Select United flight, departing Fri, Aug 22 from Billings to San Francisco, returning Sat, Aug 30, priced at $286 found 14 hours ago
Thu, Aug 21 - Mon, Aug 25
BIL
Billings
SFO
San Francisco
$289 Roundtrip, found 6 days ago
$289
Roundtrip
found 6 days ago
Select United flight, departing Thu, Aug 21 from Billings to San Francisco, returning Mon, Aug 25, priced at $289 found 6 days ago

SFO From BIL Economy Coach Packages on Similar Airlines

Price found within the past 48 hours. Click for updated prices.
River Terrace Inn - A Noble House Hotel

River Terrace Inn - A Noble House Hotel

4 out of 5
Save 100% on your flight
per person
Jul 31 - Aug 5
found 1 day ago
Roundtrip non-stop flight included
Billings (BIL) to Oakland (OAK)
Silverado Resort

Silverado Resort

4 out of 5
Save 100% on your flight
per person
Jul 31 - Aug 5
found 1 day ago
Roundtrip non-stop flight included
Billings (BIL) to Oakland (OAK)
Malvasia by Avantstay Luxe Wine Country Retreat

Malvasia by Avantstay Luxe Wine Country Retreat

3 out of 5
Save 100% on your flight
per person
Jul 31 - Aug 5
found 1 day ago
Roundtrip non-stop flight included
Billings (BIL) to San Francisco (SFO)
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Frequently asked questions

Can I catch a flight from Billings Logan International Airport to SFO right now?
It's prudent to know about any travel advice reports and quarantine requirements in place in your destination city. Be sure to visit our Covid-19 Travel Advisor for up-to-date information on flying to San Francisco Airport from Logan Intl. Airport (BIL).
What terminal is United Airlines at BIL?
Check your ticket to find out which BIL terminal you'll be taking off from on your way to San Francisco Intl. Airport (SFO) with United Airlines. If you can't spot the information on there, contact your airline.
Are there United Airlines non-stop flights from BIL to SFO?
Be ready for at least one stopover when traveling from BIL to San Francisco Airport, as United Airlines doesn't offer direct flights on this route. While waiting for your connection, you might like to pick up a new novel or a glossy magazine from the airport bookstore to help pass the time.
How long is a United Airlines flight from BIL to SFO?
Air traffic and weather permitting, your United Airlines flight from BIL to SFO will take approximately 4 hours and 32 minutes. You'll have ample time to enjoy a drink or two, get some shut-eye and check your travel schedule before you hit the tarmac.
How many direct and indirect flights does United Airlines fly from BIL to SFO?
You can choose from approximately 3 flights daily with United Airlines from Logan Intl. Airport (BIL) to San Francisco Intl. Airport (SFO).
If I am not able to travel due to COVID-19, can I change my booking to a later date?
For more info about changing your flight to San Francisco Airport, please visit our Customer Service Portal.
What is the best day to buy a plane ticket?
This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2021. Tuesday and Wednesday prices are also good, but you may want to prepare your budget if booking during the weekend, as data shows that is when prices are generally at their highest.
What are the cheapest days to fly?
Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2021, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.
How far in advance can you book a flight?
Trying to figure out how early you should book your flight? It's possible to start comparing international airfares on Travelocity up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 0-2 weeks prior to their travel dates.*According to flight demand on Travelocity.com from January to December 2021. Savings are subject to change based on departure location, date and destination.

Travelers ❤️ these 🏨 after their flight to San Francisco

Grand Hyatt at SFO

Grand Hyatt at SFO

4 out of 5
55 S McDonnell Rd, San Francisco, CA
This hotel features a restaurant, a gym, and a bar/lounge. Traveling on business? Take advantage of the free WiFi in public areas, laundry service, and valet ...
9.6/10 Exceptional! (1,365 reviews)
"Great"

Reviewed on Jul 15, 2025

Grand Hyatt at SFO
SFO El Rancho Inn SureStay Collection by Best Western

SFO El Rancho Inn SureStay Collection by Best Western

3 out of 5
1100 El Camino Real, Millbrae, CA
This hotel features a 24-hour gym and a seasonal outdoor pool. Traveling on business? Take advantage of the 2 conference rooms, along with free WiFi in public ...
8.2/10 Very Good! (2,840 reviews)
"We only spent 2days and 1 nite but it was great. It’s closer to where we were going. I wouldn’t mind staying at this place again if ever we needed a place to stay. Staff were very friendly and helpful especially Ms Angie at the front desk."

Reviewed on Jul 16, 2025

SFO El Rancho Inn SureStay Collection by Best Western
Crowne Plaza San Francisco Airport by IHG

Crowne Plaza San Francisco Airport by IHG

3.5 out of 5
1177 Airport Blvd, Burlingame, CA
This hotel features an indoor pool and a gym. Traveling on business? Take advantage of the 24-hour business center, free WiFi in public areas, and airport shuttle. ...
7.6/10 Good! (1,902 reviews)
"The food smelled delicious and awesome customer service"

Reviewed on Jul 16, 2025

Crowne Plaza San Francisco Airport by IHG
Lowest nightly price found within the past 24 hours based on a 1 night stay for 2 adults. Prices and availability subject to change. Additional terms may apply.
*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.