$126+ Cheap flights from Boston to San Antonio (BOS - SAT)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/27. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SAT
Aug 17 — Aug 241
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 July 18, 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 July 18, 2026.
This Delta deal was found by Cheapflights users on 7/16. 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 8/116:05 am
BOS
- SAT
1 stop6h 37m
Delta
Tue 8/181:20 pm
SAT
- BOS
Nonstop4h 27m
Delta
Deal found 7/16![Delta logo]()
$279
This Southwest deal was found by Cheapflights users on 7/14. 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 8/133:35 pm
BOS
- SAT
1 stop6h 55m
Southwest
Thu 8/205:35 am
SAT
- BOS
2 stops7h 55m
Southwest
Deal found 7/14![Southwest logo]()
$281
This Southwest deal was found by Cheapflights users on 7/16. 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 10/2210:40 am
BOS
- SAT
2 stops14h 10m
Southwest
Mon 10/265:25 am
SAT
- BOS
2 stops7h 25m
Southwest
Deal found 7/16![Southwest logo]()
$292
This Southwest deal was found by Cheapflights users on 7/17. 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 8/185:35 am
BOS
- SAT
2 stops8h 15m
Southwest
Fri 8/213:30 pm
SAT
- BOS
1 stop6h 00m
Southwest
Deal found 7/17![Southwest logo]()
$294
This Delta deal was found by Cheapflights users on 7/13. 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 8/69:01 am
BOS
- SAT
Nonstop4h 24m
Delta
Sun 8/91:20 pm
SAT
- BOS
Nonstop4h 27m
Delta
Deal found 7/13![Delta logo]()
$299
This Delta deal was found by Cheapflights users on 7/13. 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 8/55:30 am
BOS
- SAT
1 stop9h 08m
Delta
Sun 8/91:20 pm
SAT
- BOS
Nonstop4h 27m
Delta
Deal found 7/13![Delta logo]()
$309
This Southwest deal was found by Cheapflights users on 7/16. 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 8/205:50 am
BOS
- SAT
2 stops8h 00m
Southwest
Sun 8/233:50 pm
SAT
- BOS
1 stop6h 50m
Southwest
Deal found 7/16![Southwest logo]()
$314
This United Airlines deal was found by Cheapflights users on 7/16. 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.
Fri 8/76:00 am
BOS
- SAT
1 stop7h 12m
United Airlines
Sat 8/155:30 pm
SAT
- BOS
1 stop6h 45m
United Airlines
Deal found 7/16![United Airlines logo]()
$323
This Southwest deal was found by Cheapflights users on 7/13. 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 8/279:40 am
BOS
- SAT
2 stops8h 30m
Southwest
Thu 9/311:50 am
SAT
- BOS
1 stop6h 50m
Southwest
Deal found 7/13![Southwest logo]()
$324
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 July 18, 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 July 18, 2026.
This Southwest deal was found by Cheapflights users on 7/15. 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 10/249:20 am
BOS
- SAT
2 stops8h 40m
Southwest
Sat 11/148:05 am
SAT
- BOS
2 stops8h 20m
Southwest
Deal found 7/15![Southwest logo]()
$286
This Delta deal was found by Cheapflights users on 7/14. 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 8/115:30 am
BOS
- SAT
1 stop6h 04m
Delta
Tue 8/185:20 am
SAT
- BOS
1 stop8h 35m
Delta
Deal found 7/14![Delta logo]()
$289
This United Airlines deal was found by Cheapflights users on 7/12. 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.
Fri 8/76:00 am
BOS
- SAT
1 stop7h 12m
United Airlines
Sun 8/95:30 am
SAT
- BOS
1 stop5h 58m
United Airlines
Deal found 7/12![United Airlines logo]()
$362
This Delta deal was found by Cheapflights users on 7/16. 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 10/29:15 am
BOS
- SAT
Nonstop4h 25m
Delta
Mon 10/54:21 pm
SAT
- BOS
1 stop7h 56m
Delta
Deal found 7/16![Delta logo]()
$299
This Southwest deal was found by Cheapflights users on 7/14. 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 8/55:25 am
BOS
- SAT
1 stop6h 35m
Southwest
Mon 8/105:35 am
SAT
- BOS
2 stops7h 55m
Southwest
Deal found 7/14![Southwest logo]()
$333
This Delta deal was found by Cheapflights users on 7/12. 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 10/85:39 am
BOS
- SAT
1 stop6h 01m
Delta
Mon 10/124:00 pm
SAT
- BOS
1 stop6h 59m
Delta
Deal found 7/12![Delta logo]()
$319
This United Airlines deal was found by Cheapflights users on 7/15. 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 8/273:30 pm
BOS
- SAT
2 stops8h 09m
United Airlines
Mon 8/314:12 pm
SAT
- BOS
1 stop6h 26m
United Airlines
Deal found 7/15![United Airlines logo]()
$364
This Southwest deal was found by Cheapflights users on 7/13. 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.
Sun 9/135:20 am
BOS
- SAT
1 stop10h 50m
Southwest
Tue 9/153:30 pm
SAT
- BOS
1 stop5h 45m
Southwest
Deal found 7/13![Southwest logo]()
$343
This Delta deal was found by Cheapflights users on 7/15. 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.
Sun 12/138:00 am
BOS
- SAT
1 stop8h 28m
Delta
Sun 1/36:15 pm
SAT
- BOS
1 stop5h 43m
Delta
Deal found 7/15![Delta logo]()
$358
This Southwest deal was found by Cheapflights users on 7/17. 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 8/179:40 am
BOS
- SAT
2 stops8h 30m
Southwest
Wed 8/197:35 am
SAT
- BOS
2 stops8h 20m
Southwest
Deal found 7/17![Southwest logo]()
$368
This Delta deal was found by Cheapflights users on 7/12. 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 7/299:00 am
BOS
- SAT
Nonstop4h 24m
Delta
Mon 8/35:20 am
SAT
- BOS
1 stop6h 25m
Delta
Deal found 7/12![Delta logo]()
$359
This Southwest deal was found by Cheapflights users on 7/12. 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 11/2112:25 pm
BOS
- SAT
2 stops9h 25m
Southwest
Mon 11/235:15 am
SAT
- BOS
1 stop8h 15m
Southwest
Deal found 7/12![Southwest logo]()
$384
Last-minute flights from Boston to San AntonioDiscover last-minute flight deals from Boston to San Antonio. Data last updated July 18, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to San Antonio. Data last updated July 18, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 7/13. 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 8/55:30 am
BOS
- SAT
1 stop6h 40m
Delta
Sat 8/81:20 pm
SAT
- BOS
Nonstop4h 27m
Delta
Deal found 7/13![Delta logo]()
$309
This Delta deal was found by Cheapflights users on 7/13. 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 8/69:01 am
BOS
- SAT
Nonstop4h 24m
Delta
Mon 8/101:20 pm
SAT
- BOS
Nonstop4h 27m
Delta
Deal found 7/13![Delta logo]()
$299
This United Airlines deal was found by Cheapflights users on 7/16. 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.
Fri 8/76:00 am
BOS
- SAT
1 stop7h 12m
United Airlines
Sat 8/155:30 pm
SAT
- BOS
1 stop6h 45m
United Airlines
Deal found 7/16![United Airlines logo]()
$323
This Delta deal was found by Cheapflights users on 7/14. 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 8/79:01 am
BOS
- SAT
Nonstop4h 24m
Delta
Sat 8/81:20 pm
SAT
- BOS
Nonstop4h 27m
Delta
Deal found 7/14![Delta logo]()
$329
This Delta deal was found by Cheapflights users on 7/16. 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 8/116:05 am
BOS
- SAT
1 stop6h 37m
Delta
Tue 8/181:20 pm
SAT
- BOS
Nonstop4h 27m
Delta
Deal found 7/16![Delta logo]()
$279
This Southwest deal was found by Cheapflights users on 7/14. 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 8/133:35 pm
BOS
- SAT
1 stop6h 55m
Southwest
Thu 8/205:35 am
SAT
- BOS
2 stops7h 55m
Southwest
Deal found 7/14![Southwest logo]()
$281
This Southwest deal was found by Cheapflights users on 7/17. 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 8/185:35 am
BOS
- SAT
2 stops8h 15m
Southwest
Fri 8/213:30 pm
SAT
- BOS
1 stop6h 00m
Southwest
Deal found 7/17![Southwest logo]()
$294
This Southwest deal was found by Cheapflights users on 7/16. 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 8/205:50 am
BOS
- SAT
2 stops8h 00m
Southwest
Sun 8/233:50 pm
SAT
- BOS
1 stop6h 50m
Southwest
Deal found 7/16![Southwest logo]()
$314
This Southwest deal was found by Cheapflights users on 7/13. 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 8/279:40 am
BOS
- SAT
2 stops8h 30m
Southwest
Thu 9/311:50 am
SAT
- BOS
1 stop6h 50m
Southwest
Deal found 7/13![Southwest logo]()
$324
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 July 18, 2026.
Search for one-way flight options from Boston to San Antonio. Find affordable one-way fares based on user searches. Data last updated July 18, 2026.
This Gotogate deal was found by Cheapflights users on 7/14. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2710:04 am
BOS
- SAT
1 stop23h 52m
Frontier
Deal found 7/14![Frontier logo]()
$126
This Southwest deal was found by Cheapflights users on 7/13. 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 8/1210:50 am
BOS
- SAT
1 stop8h 10m
Southwest
Deal found 7/13![Southwest logo]()
$130
This Southwest deal was found by Cheapflights users on 7/14. 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 8/135:50 am
BOS
- SAT
2 stops8h 00m
Southwest
Deal found 7/14![Southwest logo]()
$135
This Southwest deal was found by Cheapflights users on 7/17. 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 10/1610:40 am
BOS
- SAT
2 stops14h 10m
Southwest
Deal found 7/17![Southwest logo]()
$141
This Southwest deal was found by Cheapflights users on 7/15. 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 9/147:40 am
BOS
- SAT
1 stop11h 30m
Southwest
Deal found 7/15![Southwest logo]()
$152
This Southwest deal was found by Cheapflights users on 7/17. 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.
Sun 10/45:25 am
BOS
- SAT
1 stop6h 10m
Southwest
Deal found 7/17![Southwest logo]()
$160
This Southwest deal was found by Cheapflights users on 7/14. 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 1/128:50 am
BOS
- SAT
2 stops8h 10m
Southwest
Deal found 7/14![Southwest logo]()
$165
This Kiwi.com deal was found by Cheapflights users on 7/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/158:37 am
BOS
- SAT
1 stop25h 38m
Multiple Airlines
Deal found 7/14![Multiple Airlines logo]()
$176
This Kiwi.com deal was found by Cheapflights users on 7/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/171:00 pm
BOS
- SAT
2 stops23h 58m
Multiple Airlines
Deal found 7/17![Multiple Airlines logo]()
$177
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 July 18, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $279 (Delta) |
One-way from | $126 (Gotogate) |
Popular in | April |
Cheapest in | January |
Average price | $442 |
Good round-trip deal | $349 or less |
Good one-way deal | $268 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 2,558,603 searches. Data last updated July 18, 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 - SAT
BOSSAT
Boston Logan Intl
Sat 10/24
9:20 am-5:00 pm
2 stops8h 40m
San Antonio
Sat 11/14
8:05 am-5:25 pm
2 stops8h 20m
$286
BostonSan Antonio
BOS - SAT
BOSSAT
Boston Logan Intl
Tue 8/11
5:30 am-10:34 am
1 stop6h 04m
San Antonio
Tue 8/18
5:20 am-2:55 pm
1 stop8h 35m
$289
BostonSan Antonio
BOS - SAT
BOSSAT
Boston Logan Intl
Fri 10/2
9:15 am-12:40 pm
Nonstop4h 25m
San Antonio
Mon 10/5
4:21 pm-1:17 am
1 stop7h 56m
$299
BostonSan Antonio
BOS - SAT
BOSSAT
Boston Logan Intl
Thu 10/8
5:39 am-10:40 am
1 stop6h 01m
San Antonio
Mon 10/12
4:00 pm-11:59 pm
1 stop6h 59m
$319
BostonSan Antonio
BOS - SAT
BOSSAT
Boston Logan Intl
Wed 8/5
5:25 am-11:00 am
1 stop6h 35m
San Antonio
Mon 8/10
5:35 am-2:30 pm
2 stops7h 55m
$333
BostonSan Antonio
BOS - SAT
BOSSAT
Boston Logan Intl
Sun 9/13
5:20 am-3:10 pm
1 stop10h 50m
San Antonio
Tue 9/15
3:30 pm-10:15 pm
1 stop5h 45m
$343
BostonSan Antonio
BOS - SAT
BOSSAT
Boston Logan Intl
Sun 12/13
8:00 am-3:28 pm
1 stop8h 28m
San Antonio
Sun 1/3
6:15 pm-12:58 am
1 stop5h 43m
$358
Quickest round-trip
BostonSan Antonio
BOS - SAT
BOSSAT
Boston Logan Intl
Wed 7/29
9:00 am-12:24 pm
Nonstop4h 24m
San Antonio
Mon 8/3
5:20 am-12:45 pm
1 stop6h 25m
$359
BostonSan Antonio
BOS - SAT
BOSSAT
Boston Logan Intl
Fri 8/7
6:00 am-12:12 pm
1 stop7h 12m
San Antonio
Sun 8/9
5:30 am-12:28 pm
1 stop5h 58m
$362
BostonSan Antonio
BOS - SAT
BOSSAT
Boston Logan Intl
Thu 8/27
3:30 pm-10:39 pm
2 stops8h 09m
San Antonio
Mon 8/31
4:12 pm-11:38 pm
1 stop6h 26m
$364
Showing 1-10 of 22 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 July.
| 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 $362). Flying from Boston to San Antonio in April is currently the most expensive (average of $486). 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 July 18, 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 July 18, 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
Overall
8.0
Entertainment
7.5
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Crew
8.6
Food
7.0
Overall
8.0
Entertainment
7.5
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Crew
8.6
Food
7.0
Overall
8.0
Entertainment
7.5
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Crew
8.6
Food
7.0
Overall
8.0
Entertainment
7.5
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Crew
8.6
Food
7.0
Overall
8.0
Entertainment
7.5
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Crew
8.6
Food
7.0
Overall
8.0
Entertainment
7.5
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.
Traveling to a place near San Antonio?
Book flights to San Antonio if you plan to visit one of these locationsNew Braunfels
Kerrville
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Boston and San Antonio flights
Browse other Boston and San Antonio flight options. Last updated on July 18, 2026.
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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 2,558,603 searches. Data last updated July 18, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$102 | Average$286 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$115 | Average$271 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$230 | Average$418 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$251 | Average$421 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$270 | Average$456 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$302 | Average$409 | FlexibilityNo cancel fee | On-time69% |