Cheap flights from Boston to San Antonio

Flights overview

Useful information for finding cheap flights from Boston to San Antonio and booking your next trip
Cheapest round-trip flights $232
Frontier 1 stop 24 hr Thu, May 7 — Sat, May 16
The cheapest round-trip flight from Boston to San Antonio is currently $232
Cheapest one-way flight $122
Frontier 1 stop 24 hr Thu, May 7
The cheapest one-way flight from Boston to San Antonio is currently $122
Cheapest nonstop flights $319
Delta Nonstop 5 hr Thu, Jun 4 — Wed, Jun 10
The cheapest nonstop round-trip flight from Boston to San Antonio is currently $319
Last-minute weekend getaway $825
American 1 stop 13 hr Thu, Mar 12 — Mon, Mar 16
The cheapest last-minute weekend getaway from Boston to San Antonio is currently $825
Cheapest business class flights $821
American 1 stop 12 hr Sat, Apr 25 — Sat, May 2
The cheapest business class round-trip flight from Boston to San Antonio is currently $821
Fastest flight 4 hr 33 min The fastest nonstop flight from Boston to San Antonio takes 4 hr 33 min
Nonstop flights Every day There are direct flights on this route every day.

When is the cheapest time to fly?

The cheapest month to fly from Boston to San Antonio is typically January. The most expensive month to fly is typically December.
January
Cheapest
Typical prices: $175–330
December
Most expensive
Typical prices: $285–520

Popular airlines from Boston to San Antonio

  • Delta
    Nonstop
    from $319
    Typical price: $285–630
    7 weekly nonstop flights
    BOS - SAT Every day
    374 weekly connecting flights
    BOS - SAT Every day
  • American
    from $295
    Typical price: $290–550
    641 weekly connecting flights
    BOS - SAT Every day
  • Southwest
    from $339
    Typical price: $295–520
    386 weekly connecting flights
    BOS - SAT Every day
  • United
    from $334
    Typical price: $295–580
    290 weekly connecting flights
    BOS - SAT Every day
  • Frontier
    from $220
    Typical price: $225–660
    21 weekly connecting flights
    BOS - SAT Every day
  • Spirit
    from $655
    Typical price: $230–520
    21 weekly connecting flights
    BOS - SAT Every day

Popular airports near Boston

  • Boston Logan International Airport (BOS)
    Boston United States 12 min 2 mi
  • John F. Kennedy International Airport (JFK)
    New York United States 3 hr 37 min 184 mi
  • LaGuardia Airport (LGA)
    New York United States 3 hr 25 min 181 mi
  • Rhode Island T.F. Green International Airport (PVD)
    Providence United States 1 hr 7 min 47 mi

Popular airports near San Antonio

  • San Antonio International Airport (SAT)
    San Antonio United States 19 min 7 mi
  • Austin-Bergstrom International Airport (AUS)
    Austin United States 1 hr 22 min 72 mi
  • George Bush Intercontinental Airport (IAH)
    Houston United States 3 hr 10 min 193 mi
  • William P. Hobby Airport (HOU)
    Houston United States 3 hr 15 min 193 mi

Frequently asked questions about flying from Boston to San Antonio

The cheapest flights from Boston to San Antonio are usually in January. Typical ticket prices in January range from $175 to $330.
The cheapest round-trip flight from Boston to San Antonio recently found on Google Flights was with Frontier from $232. The cheapest one-way flight was with Frontier from $122.

Some of the cheapest round-trip deals we found with different airlines:
  • The cheapest Delta flight from Boston to San Antonio is $319, flying from May 7 to May 16.
  • The cheapest American flight from Boston to San Antonio is $295, flying from May 4 to May 12.
  • The cheapest Southwest flight from Boston to San Antonio is $339, flying from Apr 30 to May 6.
  • The cheapest United flight from Boston to San Antonio is $334, flying from May 1 to May 7.
  • The cheapest Frontier flight from Boston to San Antonio is $220, flying from Apr 6 to Apr 13.
  • The cheapest Spirit flight from Boston to San Antonio is $655, flying from Mar 9 to Mar 18.
The cheapest round-trip flight from Boston to San Antonio starts at $232 from Thu, May 7 to Sat, May 16. The cheapest one-way flight starts at $122 and departs on Thu, May 7.
4 hr 33 min is the shortest flight time from Boston to San Antonio.
San Antonio has mild winters (Dec–Feb), and hot and humid summers (Jun–Sep). Summer, as well as warm spring (Mar–May) are the most popular times to visit. Remember the Alamo Weekend (Mar) sees reenactments of the battle. Fiesta San Antonio (Apr), a long-standing heritage festival, is a huge, 11-day party known for its flower parades, live music and food stands.
It's easy to use Google Flights to find the cheapest days to fly from Boston to San Antonio.
Just click the Departure label near the top of the page to open the calendar. Choose a start date and a return date to see how the round-trip fare changes on those specific days.
Adjust the trip type to see one-way fares. The cheapest available flights are highlighted and easy to spot. Once you settle on dates, click the Search button to see flight options and book the deal.

You can also turn on price tracking to get alerts if the price changes for a route or flight.
What counts as the best airline for your flights from Boston to San Antonio really depends on your individual needs. You may have a favorite carrier or a loyalty program you like, but price, convenience, and airports served also come into play. Flexibility and booking terms – Can you change flights if you want to stay longer or get a refund if you have to postpone your trip? – are also factors that help determine which airline is best to fly from Boston to San Antonio.

In terms of nonstop flights, Delta is the most popular. Delta offers 7 nonstop flights and 374 connecting flights per week. Delta flies from Boston Logan International Airport (BOS) to San Antonio International Airport (SAT) .

In terms of flights, American is the most popular. American offers 641 connecting flights per week. American flies from Boston Logan International Airport (BOS) to San Antonio International Airport (SAT) .

Other popular airlines flying from Boston to San Antonio are:
  • Southwest offers 386 connecting flights per week. Southwest flies from Boston Logan International Airport (BOS) to San Antonio International Airport (SAT) .
  • United offers 290 connecting flights per week. United flies from Boston Logan International Airport (BOS) to San Antonio International Airport (SAT) .
  • Frontier offers 21 connecting flights per week. Frontier flies from Boston Logan International Airport (BOS) to San Antonio International Airport (SAT) .
  • Spirit offers 21 connecting flights per week. Spirit flies from Boston Logan International Airport (BOS) to San Antonio International Airport (SAT) .
The number of connecting flights refers to distinct flights with at least one stop between Boston and San Antonio.
The cheapest round-trip flight from Boston to San Antonio recently found on Google Flights was with Frontier from $232. The cheapest one-way flight was with Frontier from $122.

Some of the cheapest round-trip deals we found with different airlines:
  • The cheapest Delta flight from Boston to San Antonio is $319, flying from May 7 to May 16.
  • The cheapest American flight from Boston to San Antonio is $295, flying from May 4 to May 12.
  • The cheapest Southwest flight from Boston to San Antonio is $339, flying from Apr 30 to May 6.
  • The cheapest United flight from Boston to San Antonio is $334, flying from May 1 to May 7.
  • The cheapest Frontier flight from Boston to San Antonio is $220, flying from Apr 6 to Apr 13.
  • The cheapest Spirit flight from Boston to San Antonio is $655, flying from Mar 9 to Mar 18.
Delta flies direct from Boston to San Antonio.
  • There are 7 Delta direct flights from Boston to San Antonio per week. Flights are available every day.
Use the Stops filter while searching for flights, to see only nonstop options in your results.
The cheapest last-minute deal between Boston and San Antonio at price $825 is offered by American from Thu, Mar 12 to Mon, Mar 16.
Delta flies direct from Boston to San Antonio.
  • There are 7 Delta direct flights from Boston to San Antonio per week. Flights are available every day.
Use the Stops filter while searching for flights, to see only nonstop options in your results.
There are direct flights from Boston to San Antonio on a daily basis.
The cheapest direct (nonstop) round-trip flights between Boston and San Antonio start at $319 from Thu, Jun 4 to Wed, Jun 10 with Delta.
It's easy to find nonstop flights with Google Flights! Once you've searched for flights from Boston to San Antonio, just select the nonstop flights only option in the 'Stops’ filter in the search form and view all available direct flights and their prices.
The cheapest business class round-trip flights between Boston and San Antonio start at $821 from Sat, Apr 25 to Sat, May 2 with American.
The cheapest economy class round-trip flights between Boston and San Antonio start at $232 from Thu, May 7 to Sat, May 16.
To book business class trips from Boston to San Antonio, look for the default Economy selection at the top, and change it to your desired cabin class such as Premium Economy, Business Class, or First Class. You can then select your departure and arrival dates, consider available options, and book your business travel.

You can also adjust the trip type to view one-way fares.
The best last-minute getaway deal for the next weekend between Boston and San Antonio starts at $825 from Thu, Mar 12 to Mon, Mar 16 with American.
The cheapest last-minute deal between Boston and San Antonio at price $825 is offered by American from Thu, Mar 12 to Mon, Mar 16.
To find last-minute flight deals from Boston to San Antonio, start by entering the city names, select the desired departure and return dates, and hit the Search button to view flight options.

You can check for last-minute flights for the same day or adjust the trip type to see one-way fares.

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