$109+ 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 11/14. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SAT
Nov 5 — Nov 121
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 79 days in advance, depart on a Friday or Wednesday and return on a Saturday
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 October 6, 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 October 6, 2026.
This Southwest deal was found by Cheapflights users on 10/1. 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 12/94:15 pm -
1 stop6h 25m
Wed 12/163:20 pm -
1 stop5h 20m
Deal found 10/1![Southwest logo]()
$309
This Southwest deal was found by Cheapflights users on 10/1. 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 12/85:10 pm -
1 stop6h 30m
Tue 12/156:45 am -
2 stops8h 40m
Deal found 10/1![Southwest logo]()
$314
This Delta deal was found by Cheapflights users on 10/1. 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 12/910:10 am -
1 stop6h 24m
Wed 12/162:12 pm -
Nonstop4h 11m
Deal found 10/1![Delta logo]()
$319
This Southwest deal was found by Cheapflights users on 10/1. 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 10/245:15 am -
1 stop11h 50m
Tue 10/277:30 am -
2 stops8h 15m
Deal found 10/1![Southwest logo]()
$320
This Southwest deal was found by Cheapflights users on 10/4. 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 10/295:25 am -
1 stop6h 15m
Sun 11/16:25 am -
1 stop9h 00m
Deal found 10/4![Southwest logo]()
$321
This Southwest deal was found by Cheapflights users on 10/1. 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 11/22:25 pm -
2 stops8h 45m
Wed 11/45:30 am -
1 stop8h 00m
Deal found 10/1![Southwest logo]()
$324
This Southwest deal was found by Cheapflights users on 10/1. 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 10/275:45 pm -
1 stop6h 35m
Fri 10/304:55 pm -
1 stop6h 15m
Deal found 10/1![Southwest logo]()
$326
This Southwest deal was found by Cheapflights users on 10/5. 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.
Mon 11/27:30 pm -
1 stop6h 25m
Mon 11/94:55 pm -
1 stop5h 50m
Deal found 10/5![Southwest logo]()
$328
This Delta deal was found by Cheapflights users on 10/4. 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 11/41:57 pm -
1 stop6h 51m
Thu 2/2512:10 pm -
1 stop9h 16m
Deal found 10/4![Delta logo]()
$329
This Southwest deal was found by Cheapflights users on 10/1. 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 10/285:15 am -
2 stops8h 10m
Fri 10/304:55 pm -
1 stop6h 15m
Deal found 10/1![Southwest logo]()
$331
This United Airlines deal was found by Cheapflights users on 10/1. 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 11/131:32 pm -
1 stop6h 38m
Sat 11/145:30 am -
2 stops8h 02m
Deal found 10/1![United Airlines logo]()
$334
This Southwest deal was found by Cheapflights users on 10/1. 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 12/306:30 am -
2 stops14h 35m
Mon 1/45:25 am -
2 stops7h 20m
Deal found 10/1![Southwest logo]()
$335
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 October 6, 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 October 6, 2026.
This Delta deal was found by Cheapflights users on 10/2. 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 11/129:15 am -
Nonstop4h 51m
Mon 11/162:01 pm -
Nonstop4h 11m
Deal found 10/2![Delta logo]()
$309
This Southwest deal was found by Cheapflights users on 10/5. 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.
Sun 11/225:10 am -
2 stops8h 45m
Fri 11/275:25 am -
2 stops7h 20m
Deal found 10/5![Southwest logo]()
$450
This United Airlines deal was found by Cheapflights users on 10/3. 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.
Mon 11/2312:00 pm -
2 stops9h 24m
Mon 11/305:34 pm -
1 stop6h 11m
Deal found 10/3![United Airlines logo]()
$454
This Delta deal was found by Cheapflights users on 10/2. 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 11/196:05 am -
1 stop6h 57m
Sat 11/215:10 pm -
1 stop6h 58m
Deal found 10/2![Delta logo]()
$329
This Delta deal was found by Cheapflights users on 10/1. 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
Mon 11/21:50 pm -
Nonstop4h 24m
Deal found 10/1![Delta logo]()
$339
This Delta deal was found by Cheapflights users on 10/4. 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 10/309:20 am -
Nonstop4h 32m
Tue 11/31:50 pm -
Nonstop4h 24m
Deal found 10/4![Delta logo]()
$364
This United Airlines deal was found by Cheapflights users on 10/1. 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 11/195:30 am -
2 stops11h 08m
Sun 11/226:34 am -
1 stop6h 25m
Deal found 10/1![United Airlines logo]()
$454
This Delta deal was found by Cheapflights users on 10/3. 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 11/199:05 am -
1 stop7h 22m
Sun 11/226:30 pm -
1 stop5h 38m
Deal found 10/3![Delta logo]()
$384
This Delta deal was found by Cheapflights users on 10/3. 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 10/226:00 am -
1 stop7h 18m
Fri 10/305:30 am -
1 stop7h 14m
Deal found 10/3![Delta logo]()
$439
This Delta deal was found by Cheapflights users on 10/5. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/229:15 am -
Nonstop4h 51m
Fri 11/275:30 am -
1 stop5h 23m
Deal found 10/5![Delta logo]()
$459
This Delta deal was found by Cheapflights users on 10/5. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/2110:10 am -
Nonstop4h 49m
Thu 11/265:30 am -
1 stop8h 26m
Deal found 10/5![Delta logo]()
$473
Last-minute flights from Boston to San AntonioDiscover last-minute flight deals from Boston to San Antonio. Data last updated October 6, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to San Antonio. Data last updated October 6, 2026 and is based on user searches.
This Southwest deal was found by Cheapflights users on 10/1. 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 10/245:15 am -
1 stop11h 50m
Tue 10/275:15 am -
1 stop6h 10m
Deal found 10/1![Southwest logo]()
$314
This Southwest deal was found by Cheapflights users on 10/1. 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 10/275:45 pm -
1 stop6h 35m
Fri 10/304:55 pm -
1 stop6h 15m
Deal found 10/1![Southwest logo]()
$326
This Southwest deal was found by Cheapflights users on 10/1. 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 10/285:15 am -
2 stops8h 10m
Fri 10/304:55 pm -
1 stop6h 15m
Deal found 10/1![Southwest logo]()
$331
This Southwest deal was found by Cheapflights users on 10/4. 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 10/295:25 am -
1 stop6h 15m
Sun 11/16:25 am -
1 stop9h 00m
Deal found 10/4![Southwest logo]()
$321
This Delta deal was found by Cheapflights users on 10/1. 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
Mon 11/21:50 pm -
Nonstop4h 24m
Deal found 10/1![Delta logo]()
$339
This Southwest deal was found by Cheapflights users on 10/1. 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 11/22:25 pm -
2 stops8h 45m
Wed 11/45:30 am -
1 stop8h 00m
Deal found 10/1![Southwest logo]()
$324
This Southwest deal was found by Cheapflights users on 10/5. 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.
Mon 11/27:30 pm -
1 stop6h 25m
Mon 11/94:55 pm -
1 stop5h 50m
Deal found 10/5![Southwest logo]()
$328
This Delta deal was found by Cheapflights users on 10/1. 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 11/410:15 am -
1 stop6h 09m
Wed 11/112:01 pm -
Nonstop4h 11m
Deal found 10/1![Delta logo]()
$319
This Delta deal was found by Cheapflights users on 10/4. 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 11/41:57 pm -
1 stop6h 51m
Thu 2/2512:10 pm -
1 stop9h 16m
Deal found 10/4![Delta logo]()
$329
This Delta deal was found by Cheapflights users on 10/5. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/79:20 am -
Nonstop4h 32m
Fri 11/132:01 pm -
Nonstop4h 11m
Deal found 10/5![Delta logo]()
$309
This United Airlines deal was found by Cheapflights users on 10/1. 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 11/131:32 pm -
1 stop6h 38m
Sat 11/145:30 am -
2 stops8h 02m
Deal found 10/1![United Airlines logo]()
$334
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 October 6, 2026.
Search for one-way flight options from Boston to San Antonio. Find affordable one-way fares based on user searches. Data last updated October 6, 2026.
This Southwest deal was found by Cheapflights users on 10/4. 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 11/147:25 am -
1 stop7h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/4![Southwest logo]()
$109
This Southwest deal was found by Cheapflights users on 10/4. 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 10/275:45 pm -
1 stop6h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/4![Southwest logo]()
$127
This Southwest deal was found by Cheapflights users on 10/4. 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 10/285:15 am -
2 stops8h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/4![Southwest logo]()
$132
This Southwest deal was found by Cheapflights users on 10/4. 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 12/45:55 pm -
1 stop6h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/4![Southwest logo]()
$137
This CheapOair deal was found by Cheapflights users on 10/4. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/311:08 am -
1 stop26h 34m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/4![Frontier logo]()
$146
This Southwest deal was found by Cheapflights users on 10/1. 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 10/245:15 am -
1 stop11h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/1![Southwest logo]()
$160
This Southwest deal was found by Cheapflights users on 10/4. 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 10/305:30 pm -
1 stop6h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/4![Southwest logo]()
$161
This Frontier deal was found by Cheapflights users on 10/1. 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 1/111:57 am -
1 stop9h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/1![Frontier logo]()
$162
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 October 6, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $306 (Southwest) |
One-way from | $109 (Southwest) |
Popular in | December |
Cheapest in | January |
Average price | $480 |
Good round-trip deal | $374 or less |
Good one-way deal | $358 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 October 6, 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 11/4
5:00 am-2:05 pm
1 stop10h 05m
San Antonio
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$109
BostonSan Antonio
BOS Boston Logan Intl - SAT San Antonio
BOSSAT
Boston Logan Intl
Tue 12/8
5:55 pm-11:40 pm
1 stop6h 45m
San Antonio
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$109
BostonSan Antonio
BOS Boston Logan Intl - SAT San Antonio
BOSSAT
Boston Logan Intl
Sat 12/5
5:35 am-1:10 pm
2 stops8h 35m
San Antonio
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$114
BostonSan Antonio
BOS Boston Logan Intl - SAT San Antonio
BOSSAT
Boston Logan Intl
Sun 12/6
5:35 am-12:55 pm
2 stops8h 20m
San Antonio
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$200
Quickest round-trip
BostonSan Antonio
BOS Boston Logan Intl - SAT San Antonio
BOSSAT
Boston Logan Intl
Wed 11/4
9:20 am-12:52 pm
Nonstop4h 32m
San Antonio
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$234
BostonSan Antonio
BOS Boston Logan Intl - SAT San Antonio
BOSSAT
Boston Logan Intl
Mon 12/21
12:55 pm-4:50 pm
Nonstop4h 55m
San Antonio
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$234
BostonSan Antonio
BOS Boston Logan Intl - SAT San Antonio
BOSSAT
Boston Logan Intl
Sat 10/31
3:15 pm-9:10 pm
1 stop6h 55m
San Antonio
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$244
BostonSan Antonio
BOS Boston Logan Intl - SAT San Antonio
BOSSAT
Boston Logan Intl
Sat 2/13
4:20 pm-12:28 am
1 stop9h 08m
San Antonio
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$244
BostonSan Antonio
BOS Boston Logan Intl - SAT San Antonio
BOSSAT
Boston Logan Intl
Thu 10/15
5:35 am-11:00 am
1 stop6h 25m
San Antonio
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$245
BostonSan Antonio
BOS Boston Logan Intl - SAT San Antonio
BOSSAT
Boston Logan Intl
Thu 11/12
9:15 am-1:06 pm
Nonstop4h 51m
San Antonio
Mon 11/16
2:01 pm-7:12 pm
Nonstop4h 11m
$309
Showing 1-10 of 20 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 October.
| 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 78 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 $504). 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 October 6, 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 October 6, 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.
Overall
7.9
Comfort
8.0
Boarding
8.1
Food
7.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Overall
7.9
Comfort
8.0
Boarding
8.1
Food
7.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Overall
7.9
Comfort
8.0
Boarding
8.1
Food
7.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Overall
7.9
Comfort
8.0
Boarding
8.1
Food
7.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Overall
7.9
Comfort
8.0
Boarding
8.1
Food
7.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Overall
7.9
Comfort
8.0
Boarding
8.1
Food
7.0
Crew
8.6
Entertainment
7.5
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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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 October 6, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$117 | Average$276 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$230 | Average$428 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$260 | Average$346 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$270 | Average$457 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$299 | Average$395 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$307 | Average$470 | FlexibilityNo cancel fee | On-time63% |