Are direct flights from Boston to San Antonio always the best option?

Direct flights can offer convenience and save time, but they are not always the most budget-friendly choice. Flights with layovers may sometimes be less expensive. Weigh your priorities between cost savings and travel duration.

Can flexible travel dates help on Boston to San Antonio flights?

Yes, being flexible with your travel dates can often lead to finding cheaper flights. Prices can vary significantly depending on the day of the week or season. Adjusting your departure or return by a few days may result in better deals.

What extra costs should I check before booking Boston to San Antonio flights?

Before booking, always check for potential extra costs such as baggage fees, seat selection charges, and in-flight services. Some airlines may also charge for printing boarding passes at the airport. Factor these into your total travel budget.

Flights From Boston

To San Antonio

Cheap Flights from Boston to San Antonio

Browse current best options from Boston. Become a member to unlock all deals and get alerts when new deals appear.

Deals from

Boston

RatePunk searches hundreds of travel sites at once for deals on flights to San Antonio

Prices updated 1 day ago

461 airlines compared

80%+ AI score for best value

Fares are subject to change and may not be available for all dates. (Data last updated Sep 14, 2026.)

Today’s best flight deals from Boston to San Antonio

Explore current cheapest deals departing from Boston to San Antonio

2026-11-07 – 2026-11-14
BOS - San Antonio
84% AI deal score
$304
$204
Round trip
2026-11-11 – 2026-11-14
BOS - San Antonio
84% AI deal score
$318
$205
Round trip
2026-11-14 – 2026-11-17
BOS - San Antonio
85% AI deal score
$318
$205
Round trip
2026-11-13 – 2026-11-17
BOS - San Antonio
81% AI deal score
$318
$231
Round trip
2026-10-17 – 2026-10-20
BOS - San Antonio
75% AI deal score
$333
$257
Round trip
2026-11-02 – 2026-11-04
BOS - San Antonio
74% AI deal score
$317
$261
Round trip
2027-01-08 – 2027-01-22
BOS - San Antonio
69% AI deal score
$206
$268
Round trip
2027-01-12 – 2027-01-31
BOS - San Antonio
69% AI deal score
$199
$268
Round trip
2026-11-04 – 2026-11-07
BOS - San Antonio
75% AI deal score
$318
$276
Round trip
2026-12-11 – 2026-12-25
BOS - San Antonio
75% AI deal score
$316
$276
Round trip

Boston to San Antonio: Overview

Insights for flights from Boston to San Antonio

For flights from Boston to San Antonio, fares typically range from $689–$1359, with a median of $1020. Right now, fares are near the typical level. Only about 10% of recent fares were classified as a good price, indicating that finding cheap flights from Boston to San Antonio can be challenging. Deals are infrequent, so setting up a price alert may be beneficial.

A typical journey from Boston to San Antonio takes about 6h 23m, including connections. This duration accounts for itineraries that involve at least one stopover, which is common for this route.

When considering the cheapest time to fly from Boston to San Antonio, January and July stand out as the most affordable months, both with a median fare of $259. May also offers competitive pricing, with a median fare of $308. These months present the best opportunities for travelers to find lower prices.

Most itineraries for this route connect at least once, as 0% of recent fares were non-stop. When connections are involved, the median number of stopovers is 2. This means travelers should expect to make at least two stops on their journey from Boston to San Antonio.

The distance between Boston and San Antonio is approximately 2836 km. This classifies the route as a medium-haul flight, meaning it falls into the category of longer domestic journeys that typically involve several hours of flight time.

How much is a round trip from Boston to San Antonio

Regular price: $263 - $481

Prices are currently below the regular range.

The regular price range for flights from Boston to San Antonio is $263 to $481. The current lowest deal is $205 with Southwest Airlines for travel from Nov 14-Nov 17.

now $205

Low $263

High $481

The cheapest time to fly from Boston to San Antonio

The cheapest month to fly from Boston to San Antonio is October, with a median price of $184. The most expensive month is April, with a median price of $1488. Prices are generally lower from January to October.

October

Cheapest

Flights from $184

April

Most Expensive

Flights from $1,488

Jan

Apr

May

Jul

Oct

Nov

Direct flights from Boston to San Antonio

Frontier Airlines

United Airlines

JetBlue Airways

Breeze Airways

Last-minute flights going from Boston to San Antonio

Fri, Sep 25

⌛ Last-Minute

BOS - San Antonio

Boston (BOS) - San Antonio (SAT)

Deutsche Luft Hansa

$371

$455

One-way

Fri, Oct 2

⌛ Last-Minute

BOS - San Antonio

Boston (BOS) - San Antonio (SAT)

United Airlines

$347

$367

One-way

Tue, Oct 6

⌛ Last-Minute

BOS - San Antonio

Boston (BOS) - San Antonio (SAT)

Southwest Airlines

$336

$348

One-way

Tue, Oct 6

⌛ Last-Minute

BOS - San Antonio

Boston (BOS) - San Antonio (SAT)

JetBlue Airways, Frontier Airlines

$278

$362

One-way

Wed, Oct 7

⌛ Last-Minute

BOS - San Antonio

Boston (BOS) - San Antonio (SAT)

Deutsche Luft Hansa

$317

$329

One-way

Thu, Oct 8

⌛ Last-Minute

BOS - San Antonio

Boston (BOS) - San Antonio (SAT)

United Airlines

$335

$367

One-way

Biggest price drops on these dates for flights from Boston to San Antonio

3 nights

Nov 14 - Nov 17

$318 → $205

36%

7 nights

Nov 7 - Nov 14

$304 → $205

33%

3 nights

Oct 17 - Oct 20

$333 → $257

23%

5 nights

Dec 7 - Dec 12

$356 → $287

19%

Popular Airports to fly from Boston to San Antonio

Boston - San Antonio route insights

💸 Price insights

Recent fares are near the typical level

Recent fares from Boston to San Antonio are near the typical level over the last 90 days.

📅 Best time to fly

January and July are historically cheapest

Historically, January and July offer the lowest median prices at $259 for flights to San Antonio.

⏱️ Flight duration

Connecting flights average 6h 23m

Connecting flights from Boston to San Antonio typically have a median duration of 6 hours 23 minutes.

✈️ Airlines & availability

Connecting flights are dominant

The route from Boston to San Antonio is connecting-dominant, with a median of 2 stopovers.

🏆 Airline highlight

Frontier Airlines has 41 direct deals

Frontier Airlines offers the most direct deals for this route, with 41 available.

🎯 Booking tip

Deals are rare for this route

Deals for flights from Boston to San Antonio have historically been rare over the last 30 days.

Boston main airports to depart from

Logan International (BOS)

Cheapest

Boston Logan International Airport (BOS) is a convenient option for flights from Boston to San Antonio.

📍 ~4 km from city center (reachable by car, bus, or subway)

💸 Flights from ~$267

San Antonio main airports to arrive at

San Antonio International (SAT)

Cheapest

San Antonio International Airport is the primary arrival airport for flights from Boston to San Antonio.

📍 ~12 km from San Antonio city center (reachable by car)

💸 Flights from ~$267

Airports nearby San Antonio used as alternative

Austin–Bergstrom International (AUS)

Cheapest

Austin-Bergstrom International is a major international hub with an extensive flight network, offering more options.

📍 ~120 km from San Antonio (reachable by car, but heavy traffic on I-35 can increase travel time).

💸 Flights from ~$238

Business & First Class Flight Deals to San Antonio

$1,099

Save $535

United Airlines

Business Class

Frequently Asked Questions About Flights to San Antonio

To find more affordable flights, consider being flexible with your travel dates and times. Comparing prices across different airlines and booking sites can often reveal better deals. Setting up price alerts may also notify you when fares drop.

Booking flights in advance, often several weeks or months before your intended departure, can sometimes result in lower prices. However, last-minute deals can occasionally appear. Monitoring price trends may help you decide on the optimal booking time.

Comparing nearby airports can sometimes uncover different flight options or potentially lower fares. While it may add to your travel time, the savings could be worthwhile. Always consider the total cost and convenience when evaluating this option.

Related routes

More routes from Boston

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Flights to San Antonio from other cities

Flights from Charlotte to San Antonio Flights from Chicago to San Antonio Flights from Dallas to San Antonio Flights from Denver to San Antonio Flights from Des Moines to San Antonio Flights from Detroit to San Antonio Flights from El Paso to San Antonio Flights from Hong Kong to San Antonio Flights from Houston to San Antonio Flights from Indianapolis to San Antonio Flights from Istanbul to San Antonio Flights from Sioux Falls to San Antonio

Boston to San Antonio: Overview

Insights for flights from Boston to San Antonio

A typical journey from Boston to San Antonio takes about 6h 23m, including connections. This duration accounts for itineraries that involve at least one stopover, which is common for this route.

How much is a round trip from Boston to San Antonio

Regular price: $263 - $481

Prices are currently below the regular range.

The regular price range for flights from Boston to San Antonio is $263 to $481. The current lowest deal is $205 with Southwest Airlines for travel from Nov 14-Nov 17.

now $205

Low $263

High $481

The cheapest time to fly from Boston to San Antonio

October

Cheapest

Flights from $184

April

Most Expensive

Flights from $1,488

Jan

Apr

May

Jul

Oct

Nov

Direct flights from Boston to San Antonio

Frontier Airlines

United Airlines

JetBlue Airways

Breeze Airways

Last-minute flights going from Boston to San Antonio

Fri, Sep 25

⌛ Last-Minute

BOS - San Antonio

Boston (BOS) - San Antonio (SAT)

Deutsche Luft Hansa

$371

$455

One-way

Fri, Oct 2

⌛ Last-Minute

BOS - San Antonio

Boston (BOS) - San Antonio (SAT)

United Airlines

$347

$367

One-way

Tue, Oct 6

⌛ Last-Minute

BOS - San Antonio

Boston (BOS) - San Antonio (SAT)

Southwest Airlines

$336

$348

One-way

Tue, Oct 6

⌛ Last-Minute

BOS - San Antonio

Boston (BOS) - San Antonio (SAT)

JetBlue Airways, Frontier Airlines

$278

$362

One-way

Wed, Oct 7

⌛ Last-Minute

BOS - San Antonio

Boston (BOS) - San Antonio (SAT)

Deutsche Luft Hansa

$317

$329

One-way

Thu, Oct 8

⌛ Last-Minute

BOS - San Antonio

Boston (BOS) - San Antonio (SAT)

United Airlines

$335

$367

One-way

Biggest price drops on these dates for flights from Boston to San Antonio

3 nights

Nov 14 - Nov 17

$318 → $205

36%

7 nights

Nov 7 - Nov 14

$304 → $205

33%

3 nights

Oct 17 - Oct 20

$333 → $257

23%

5 nights

Dec 7 - Dec 12

$356 → $287

19%

Popular Airports to fly from Boston to San Antonio