287 € Cheap Flights from Billings to San Antonio International

Compare Billings to San Antonio International flight deals

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Flight deals from Billings to San Antonio International

Looking for a cheap last-minute deal or the best return flight from Billings Airport to San Antonio International Airport? If you want to travel next month, return fares start from 287 €. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Billings to San Antonio International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Billings to San Antonio International flights are currently cheapest in August.

Billings to San Antonio International: Alternative routes

Compare routes from Billings to San Antonio below. You may find an airport to fly into that's cheaper, faster, or easier than San Antonio International.

Billings to San Antonio: Flight information

The things to know before you go.
Cheapest flight found287 €
Cheapest month to flyAugust

Finding cheap flights from Billings to San Antonio International: Frequently asked questions

The best price we found for a return flight from Billings to San Antonio International is 287 €. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Billings to San Antonio International. But we found flights with one or more stops from 287 €.
As of July 2026, there are no flights flying from Billings to San Antonio International.
The cheapest month to fly from Billings to San Antonio International is usually August.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Billings Airport to San Antonio International Airport on Thursday, 13 August 2026.
No airlines currently offer direct flights between Billings Airport and San Antonio International Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to San Antonio International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to San Antonio is around 40 days in advance, so don’t leave your flight to the last minute.

Currently, United offers the cheapest flight tickets to San Antonio International.

Flying from Billings Airport (BIL) to San Antonio International Airport (SAT): what you need to know

  • The timezone in San Antonio is UTC-6, which is one hour ahead of Billings.

  • For a smooth journey, turn up at the airport two hours ahead of international flights and an hour before domestic departures. This will give you enough time to board your BIL to SAT flight.

  • Travelling during a peak month like September? School holidays and other popular seasons can result in longer lines at airport checkpoints. Be extra cautious and get there up to four hours ahead of international flights and two hours before domestic departures.

  • If you'd like to add a stop to your trip, simply deselect 'Direct flights only' when searching for your ticket from Billings Airport to San Antonio International Airport. These are the top stopovers between BIL and SAT:

    • Dallas Fort Worth International Airport

    • Denver International Airport

    • Phoenix Sky Harbour Airport

How to find the cheapest flights from Billings Airport (BIL) to San Antonio International Airport (SAT)

  • 209 € is currently the best price for a one-way Billings Airport to San Antonio International Airport flight. A return flight starts from 287 €. These prices may change depending on availability.

  • Don't leave things to the last minute. You're more likely to find cheap tickets from BIL to SAT if you book in advance. Airlines often offer some terrific early bird deals.

  • The 'Whole month' search function shows you the cheapest flights from Billings Airport to San Antonio International Airport across every month. It's a good way to snap up a bargain if your dates aren't set in stone.

  • Getting your hands on cheap flights from BIL to SAT is a breeze with Price Alerts. Simply set up one of these automatic alerts and we'll notify you when a new deal comes up.

  • Choose your preferred arrival and departure times, number of stops and airlines with the filters. Or sort your results by 'Cheapest' to see the best deals on flights from Billings Airport to San Antonio International Airport.

Handy information about Billings Airport (BIL)

  • BIL is located at 1901 Terminal Circle, Room 216.

  • Billings Airport gets high marks for its on-time performance. 84% of flights that depart BIL reach their destination without delay.

  • To reach Billings Airport from central Billings, it takes around 15 minutes if you're going by car. Of course, this depends on traffic conditions. It's approximately 10 kilometres from the airport to the city centre.

  • Planning to take public transport? You can expect a journey time of around 30 minutes.

  • Get your journey off to a relaxed start by staying near BIL. Whether you're taking an early flight from Billings Airport to San Antonio International Airport or want to avoid feeling rushed, these hotels are ideal:

Arriving at San Antonio International Airport (SAT)

Getting from San Antonio International Airport (SAT) to central San Antonio

  • SAT is located at 9800 Airport Boulevard.

  • From San Antonio International Airport, San Antonio is approximately 14 kilometres away. It takes around 20 minutes to get to the centre driving.

  • If you're travelling on public transport, expect a journey of around 50 minutes.

When to fly to San Antonio International Airport (SAT)

  • The quietest month for a flight from Billings Airport to San Antonio International Airport is March, while July is the busiest. Choose the best time to visit San Antonio based on whether you prefer a bustling atmosphere or a more laid-back vibe.

  • The warmest month in San Antonio is August, with temperatures ranging between 24ºC (75ºF) and 40ºC (104ºF). Book your flights from Billings Airport to San Antonio International Airport in this month if this is the type of weather you like.

  • If you like cooler conditions, look for a cheap ticket from BIL to SAT in January. Average temperatures are between 4ºC (39ºF) and 20ºC (68ºF) then.

Explore more of the United States

  • San Antonio has its own special appeal, but there are so many other corners of the United States you'll want to see. About 306 kilometres east of San Antonio, a trip to Houston will fill your itinerary to the brim. Don't miss top attractions like The Museum of Fine Arts, Houston, Beck Building, Houston Museum of Natural Science and The Menil Collection.

  • Dallas is another well-known destination in the United States and is around 402 kilometres north-east of San Antonio. No journey is complete without experiencing Meyerson Symphony Centre, Winspear Opera House and Dallas Museum of Art.

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.