$115+ Cheap flights from Boston to San Antonio (BOS - 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 12/7. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SAT
Oct 10 — Oct 171
Round-trip
1 adult, Economy
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Find cheap flights from Boston to San Antonio with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Boston Logan Intl to San Antonio are usually found in January or August, booked 51 days in advance, depart on a Tuesday or Friday and return on a Tuesday
Cheap flight deals from Boston to San Antonio
Cheapest
Best
Last-minute
One-way
Cheapest flights from Boston to San AntonioExplore the most affordable flight options available from Boston to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 10, 2026.
Explore the most affordable flight options available from Boston to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 10, 2026.
This Delta deal was found by Cheapflights users on 9/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/299:20 am -
Nonstop4h 32m
Tue 11/31:50 pm -
Nonstop4h 24m
Deal found 9/8![Delta logo]()
$269
This Delta deal was found by Cheapflights users on 9/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/249:05 am -
1 stop9h 09m
Mon 11/21:50 pm -
Nonstop4h 24m
Deal found 9/8![Delta logo]()
$279
This Delta deal was found by Cheapflights users on 9/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/249:05 am -
1 stop9h 09m
Sat 10/315:00 pm -
1 stop7h 20m
Deal found 9/9![Delta logo]()
$289
This Southwest deal was found by Cheapflights users on 9/7. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/245:25 am -
2 stops9h 15m
Sun 11/16:25 am -
1 stop9h 00m
Deal found 9/7![Southwest logo]()
$294
This Delta deal was found by Cheapflights users on 9/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/207:15 pm -
1 stop6h 18m
Fri 10/301:50 pm -
Nonstop4h 24m
Deal found 9/7![Delta logo]()
$299
This Southwest deal was found by Cheapflights users on 9/8. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/15:45 pm -
1 stop6h 20m
Thu 12/32:45 pm -
1 stop6h 05m
Deal found 9/8![Southwest logo]()
$306
This United Airlines deal was found by Cheapflights users on 9/7. 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.
Tue 10/205:38 pm -
1 stop6h 13m
Sun 11/85:34 pm -
1 stop6h 12m
Deal found 9/7![United Airlines logo]()
$309
This Southwest deal was found by Cheapflights users on 9/9. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/317:20 am -
2 stops9h 35m
Tue 11/31:50 pm -
1 stop8h 50m
Deal found 9/9![Southwest logo]()
$311
This United Airlines deal was found by Cheapflights users on 9/5. 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.
Thu 12/315:45 am -
1 stop6h 37m
Tue 1/52:15 pm -
2 stops8h 34m
Deal found 9/5![United Airlines logo]()
$314
This Southwest deal was found by Cheapflights users on 9/9. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2211:50 am -
1 stop13h 05m
Sat 10/3110:50 am -
2 stops7h 35m
Deal found 9/9![Southwest logo]()
$317
This Delta deal was found by Cheapflights users on 9/6. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/39:15 am -
Nonstop4h 25m
Tue 10/61:50 pm -
Nonstop4h 24m
Deal found 9/6![Delta logo]()
$319
Best flights from Boston to San AntonioDiscover carefully curated flight deals from Boston to San Antonio that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 10, 2026.
Discover carefully curated flight deals from Boston to San Antonio that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 10, 2026.
This Delta deal was found by Cheapflights users on 9/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/3112:05 pm -
1 stop10h 05m
Tue 11/31:50 pm -
Nonstop4h 24m
Deal found 9/9![Delta logo]()
$279
This Southwest deal was found by Cheapflights users on 9/9. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/234:50 pm -
1 stop8h 20m
Tue 10/273:35 pm -
1 stop5h 35m
Deal found 9/9![Southwest logo]()
$289
This Southwest deal was found by Cheapflights users on 9/9. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/305:25 am -
1 stop6h 35m
Mon 10/53:20 pm -
2 stops7h 35m
Deal found 9/9![Southwest logo]()
$294
This Delta deal was found by Cheapflights users on 9/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/309:15 am -
Nonstop4h 25m
Mon 10/54:00 pm -
1 stop6h 58m
Deal found 9/9![Delta logo]()
$339
This Southwest deal was found by Cheapflights users on 9/8. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/206:35 pm -
1 stop6h 30m
Sun 11/227:30 am -
1 stop5h 15m
Deal found 9/8![Southwest logo]()
$344
This Delta deal was found by Cheapflights users on 9/6. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/173:10 pm -
1 stop8h 17m
Sun 2/214:00 pm -
1 stop6h 34m
Deal found 9/6![Delta logo]()
$364
This Southwest deal was found by Cheapflights users on 9/5. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/245:25 am -
2 stops9h 15m
Mon 10/263:20 pm -
2 stops7h 15m
Deal found 9/5![Southwest logo]()
$354
This Southwest deal was found by Cheapflights users on 9/9. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/23:30 pm -
2 stops7h 40m
Tue 11/36:45 am -
2 stops8h 05m
Deal found 9/9![Southwest logo]()
$354
This Delta deal was found by Cheapflights users on 9/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/119:15 am -
Nonstop4h 51m
Sun 11/152:01 pm -
Nonstop4h 11m
Deal found 9/8![Delta logo]()
$394
This Delta deal was found by Cheapflights users on 9/6. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/229:15 am -
Nonstop4h 25m
Sat 10/31:35 pm -
Nonstop4h 21m
Deal found 9/6![Delta logo]()
$399
This Delta deal was found by Cheapflights users on 9/6. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/278:00 am -
1 stop8h 47m
Tue 12/12:12 pm -
Nonstop4h 11m
Deal found 9/6![Delta logo]()
$404
This Delta deal was found by Cheapflights users on 9/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/267:15 pm -
1 stop6h 18m
Fri 10/301:20 pm -
1 stop8h 45m
Deal found 9/9![Delta logo]()
$447
Last-minute flights from Boston to San AntonioDiscover last-minute flight deals from Boston to San Antonio. Data last updated September 10, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to San Antonio. Data last updated September 10, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 9/6. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/39:15 am -
Nonstop4h 25m
Tue 10/61:50 pm -
Nonstop4h 24m
Deal found 9/6![Delta logo]()
$319
This American Airlines deal was found by Cheapflights users on 9/5. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/106:00 am -
1 stop6h 01m
Sat 10/173:00 pm -
1 stop6h 04m
Deal found 9/5![American Airlines logo]()
$320
This Delta deal was found by Cheapflights users on 9/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/205:39 am -
1 stop6h 02m
Wed 10/281:50 pm -
Nonstop4h 24m
Deal found 9/7![Delta logo]()
$299
This United Airlines deal was found by Cheapflights users on 9/7. 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.
Tue 10/205:38 pm -
1 stop6h 13m
Sun 11/85:34 pm -
1 stop6h 12m
Deal found 9/7![United Airlines logo]()
$309
This Southwest deal was found by Cheapflights users on 9/9. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2211:50 am -
1 stop13h 05m
Sat 10/3110:50 am -
2 stops7h 35m
Deal found 9/9![Southwest logo]()
$317
This Southwest deal was found by Cheapflights users on 9/6. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/226:45 pm -
1 stop6h 10m
Tue 10/276:50 am -
2 stops9h 20m
Deal found 9/6![Southwest logo]()
$324
This Delta deal was found by Cheapflights users on 9/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/249:05 am -
1 stop9h 09m
Mon 11/21:50 pm -
Nonstop4h 24m
Deal found 9/8![Delta logo]()
$279
This Delta deal was found by Cheapflights users on 9/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/249:05 am -
1 stop9h 09m
Mon 10/266:20 pm -
1 stop6h 00m
Deal found 9/8![Delta logo]()
$289
This Southwest deal was found by Cheapflights users on 9/7. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/245:25 am -
2 stops9h 15m
Sun 11/16:25 am -
1 stop9h 00m
Deal found 9/7![Southwest logo]()
$294
This Delta deal was found by Cheapflights users on 9/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/299:20 am -
Nonstop4h 32m
Tue 11/31:50 pm -
Nonstop4h 24m
Deal found 9/8![Delta logo]()
$269
This Southwest deal was found by Cheapflights users on 9/9. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/317:20 am -
2 stops9h 35m
Wed 11/45:50 am -
1 stop5h 40m
Deal found 9/9![Southwest logo]()
$311
One-way flights from Boston to San AntonioSearch for one-way flight options from Boston to San Antonio. Find affordable one-way fares based on user searches. Data last updated September 10, 2026.
Search for one-way flight options from Boston to San Antonio. Find affordable one-way fares based on user searches. Data last updated September 10, 2026.
This Frontier deal was found by Cheapflights users on 9/5. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/711:57 am -
1 stop9h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Frontier logo]()
$115
This Southwest deal was found by Cheapflights users on 9/6. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/75:35 am -
1 stop6h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Southwest logo]()
$145
This Southwest deal was found by Cheapflights users on 9/6. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/52:25 pm -
2 stops8h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Southwest logo]()
$150
This Southwest deal was found by Cheapflights users on 9/9. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/155:25 am -
1 stop6h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Southwest logo]()
$162
This Frontier deal was found by Cheapflights users on 9/9. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1111:57 am -
1 stop9h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Frontier logo]()
$163
This Frontier deal was found by Cheapflights users on 9/5. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/411:57 am -
1 stop9h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Frontier logo]()
$164
This Southwest deal was found by Cheapflights users on 9/7. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/75:35 am -
2 stops8h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Southwest logo]()
$167
This Southwest deal was found by Cheapflights users on 9/8. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/24:20 pm -
1 stop9h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Southwest logo]()
$175
Find flight deals from Boston to San Antonio
Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) 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 September 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $269 (Delta) |
One-way from | $115 (Frontier) |
Popular in | December |
Cheapest in | January |
Average price | $419 |
Good round-trip deal | $334 or less |
Good one-way deal | $298 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Boston 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 7,457,451 searches. Data last updated September 10, 2026.
Use the filters below to find and compare flights from Boston to San Antonio that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BostonSan Antonio
BOS Boston Logan Intl - SAT San Antonio
BOSSAT
Boston Logan Intl
Wed 10/7
5:35 am-10:55 am
1 stop6h 20m
San Antonio
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$145
BostonSan Antonio
BOS Boston Logan Intl - SAT San Antonio
BOSSAT
Boston Logan Intl
Thu 11/5
2:25 pm-10:10 pm
2 stops8h 45m
San Antonio
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$150
BostonSan Antonio
BOS Boston Logan Intl - SAT San Antonio
BOSSAT
Boston Logan Intl
Sun 2/14
5:30 am-10:50 am
1 stop6h 20m
San Antonio
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$175
BostonSan Antonio
BOS Boston Logan Intl - SAT San Antonio
BOSSAT
Boston Logan Intl
Thu 11/12
3:30 pm-10:10 pm
2 stops7h 40m
San Antonio
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$180
BostonSan Antonio
BOS Boston Logan Intl - SAT San Antonio
BOSSAT
Boston Logan Intl
Tue 11/10
9:15 am-1:06 pm
Nonstop4h 51m
San Antonio
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$214
BostonSan Antonio
BOS Boston Logan Intl - SAT San Antonio
BOSSAT
Boston Logan Intl
Wed 12/9
9:15 am-1:17 pm
Nonstop5h 02m
San Antonio
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$214
Quickest round-trip
BostonSan Antonio
BOS Boston Logan Intl - SAT San Antonio
BOSSAT
Boston Logan Intl
Sat 10/10
9:20 am-12:52 pm
Nonstop4h 32m
San Antonio
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$224
BostonSan Antonio
BOS Boston Logan Intl - SAT San Antonio
BOSSAT
Boston Logan Intl
Sat 1/23
9:15 am-1:08 pm
Nonstop4h 53m
San Antonio
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$224
BostonSan Antonio
BOS Boston Logan Intl - SAT San Antonio
BOSSAT
Boston Logan Intl
Thu 12/10
12:06 pm-9:31 pm
1 stop10h 25m
San Antonio
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$224
BostonSan Antonio
BOS Boston Logan Intl - SAT San Antonio
BOSSAT
Boston Logan Intl
Tue 9/22
5:35 am-12:50 pm
2 stops8h 15m
San Antonio
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$230
Showing 1-10 of 24 resultsSorted by cheapest first
Compare providers for flights from Boston 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 Boston to San Antonio in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy2 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Boston-San Antonio flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Boston-San Antonio flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Boston-San Antonio flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Boston-San Antonio flights, Cheapflights users trust FlightHub the most. FlightHub 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 Boston-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 Boston to San Antonio
Have a flexible travel schedule? Discover the best time to fly to San Antonio from Boston with our price prediction graph.
BOS-SAT
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 Boston to San Antonio
How far ahead should I book a flight from Boston to San Antonio?
The best time to book flights from Boston to San Antonio is 50 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from Boston to San Antonio?
Currently, January is the cheapest month in which you can book a flight from Boston to San Antonio (average of $357). Flying from Boston to San Antonio in December is currently the most expensive (average of $495). 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.
What is the cheapest time of day to fly from BOS to SAT?
Find hourly flight availability from Boston to San Antonio. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 10, 2026.
When flying from Boston to San Antonio, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
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 September 10, 2026.
Peruse reviews from past customers who have flown with Southwest,Delta, andUnited Airlines from Boston to San Antonio to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.6
Food
7.0
Entertainment
7.5
Overall
8.0
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Crew
8.6
Food
7.0
Entertainment
7.5
Overall
8.0
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Crew
8.6
Food
7.0
Entertainment
7.5
Overall
8.0
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Crew
8.6
Food
7.0
Entertainment
7.5
Overall
8.0
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Crew
8.6
Food
7.0
Entertainment
7.5
Overall
8.0
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Crew
8.6
Food
7.0
Entertainment
7.5
Overall
8.0
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Related info for your journey
Find useful and relevant information for your journey from Boston to San Antonio. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Book flights to San Antonio if you plan to visit one of these locationsNew Braunfels
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Boston and San Antonio flights
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Top 6 airlines flying from Boston to San Antonio
Discover the top 6 airlines that operate flights from Boston 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 7,457,451 searches. Data last updated September 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$102 | Average$337 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$115 | Average$271 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$230 | Average$416 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$270 | Average$457 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$298 | Average$464 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$299 | Average$395 | FlexibilityNo cancel fee | On-time69% |