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$371+ Cheap flights from Billings to San Antonio (BIL - SAT)

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 12/31. Fares are subject to change and may not be available on all flights or dates of travel.
BIL — SAT
Jan 4 — Jan 111
Sun 1/4
Sun 1/11
1 adult, Economy
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Cheap flight deals from Billings to San Antonio

Cheapest flights from Billings to San Antonio
Explore the most affordable flight options available from Billings to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 5, 2025.

This United Airlines deal was found by Cheapflights users on 12/4. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/315:50 pmBIL - SAT
1 stop4h 57mUnited Airlines
Mon 1/54:55 pmSAT - BIL
1 stop5h 29mUnited Airlines
Deal found 12/4$371

Find flight deals from Billings to San Antonio

Discover tips and strategies to find the most affordable flight options for your journey from Billings (BIL) to San Antonio (SAT). 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 December 5, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$371
(United Airlines)

Popular in

March

Cheapest in

September

Average price

$556
Provider with most accurate pricing for Billings Logan Intl-San Antonio flight deals.
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Provider most trusted by Cheapflights users for Billings Logan Intl-San Antonio flights.
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From Billings Logan Intl to San Antonio
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($88 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($15 potential savings vs. average RT price).
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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 Antonio 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 5, 2025.
Use the filters below to find and compare flights from Billings to San Antonio that are best for you.

Fly from

Billings

Fly to

San Antonio

Route

Depart

Return

Price

BillingsSan Antonio

BIL - SAT

BILSAT

Billings Logan Intl

Wed 12/31

5:50 pm-11:47 pm

1 stop4h 57m

San Antonio

Mon 1/5

4:55 pm-9:24 pm

1 stop5h 29m

$371

BillingsSan Antonio

BIL - SAT

BILSAT

Billings Logan Intl

Sat 1/10

7:00 am-5:45 pm

1 stop9h 45m

San Antonio

Wed 1/14

6:46 pm-11:36 pm

1 stop29h 50m

$372

BillingsSan Antonio

BIL - SAT

BILSAT

Billings Logan Intl

Tue 3/10

2:36 pm-8:46 pm

1 stop5h 10m

San Antonio

Sat 3/14

4:40 pm-8:51 pm

1 stop5h 11m

$384

BillingsSan Antonio

BIL - SAT

BILSAT

Billings Logan Intl

Thu 3/19

5:15 am-1:44 pm

1 stop7h 29m

San Antonio

Sun 3/22

5:56 pm-10:29 pm

1 stop5h 33m

$415

BillingsSan Antonio

BIL - SAT

BILSAT

Billings Logan Intl

Fri 3/20

6:20 pm-12:13 am

1 stop4h 53m

San Antonio

Tue 3/24

5:56 pm-10:29 pm

1 stop5h 33m

$415

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/4

Compare providers for flights from Billings to San Antonio

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 Billings to San Antonio in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*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 Antonio flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Billings-San Antonio flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Billings-San Antonio flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Billings-San Antonio flights, Cheapflights users trust eDreams the most. eDreams 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 Antonio 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 Antonio

Have a flexible travel schedule? Discover the best time to fly to San Antonio 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 Antonio

What is the cheapest month to book a flight from Billings to San Antonio?

Currently, June is the cheapest month in which you can book a flight from Billings to San Antonio (average of $214). Flying from Billings to San Antonio in March is currently the most expensive (average of $394). 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 Antonio

Get insights into the airlines that provide service to San Antonio. 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 Antonio. Reviews last updated December 5, 2025.
Get a feel of what it's like to fly with Delta and United Airlines from Billings to San Antonio 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.
Delta
7.9
Good
8,010 reviews

Food

7.3

Boarding

8.1

Comfort

7.9

Overall

7.9

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,010 reviews
Delta
7.9
Good
8,010 reviews

Food

7.3

Boarding

8.1

Comfort

7.9

Overall

7.9

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,064 reviews
Delta
7.9
Good
8,010 reviews

Food

7.3

Boarding

8.1

Comfort

7.9

Overall

7.9

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from Billings to San Antonio. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Billings to San Antonio?

    A quick flight from Billings to San Antonio can take about 4h 57m. United Airlines provides one of the quickest options available for as low as $371. There are 1249 mi between Billings and San Antonio. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    Flying on United Airlines is currently your cheapest option to San Antonio, with prices starting at $350. Another option worth looking into is Delta, starting at $350 round trip. You may be able to fly from Billings to San Antonio for 33% less than the average price by searching for these airlines.

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

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

  • How can I find direct flights from Billings to San Antonio?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Billings to San Antonio.

  • Can I find deals for business class flights from Billings to San Antonio?

    Yes. Cheapflights offers flight deals from Billings to San Antonio 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 Antonio?

    Currently, June is the cheapest month in which you can book a flight from Billings to San Antonio (average of $214). Flying from Billings to San Antonio in March is currently the most expensive (average of $394). 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 Antonio?

Book flights to San Antonio if you plan to visit one of these locations
New Braunfels
Kerrville

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Top 2 airlines flying from Billings to San Antonio

Discover the top 2 airlines that operate flights from Billings to San Antonio. 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 5, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$350Average$484FlexibilityNo cancel feeOn-time69%
DeltaCheapest$350Average$356FlexibilityNo cancel feeOn-timeN/A

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