$130+ 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 5/27. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SAT
Jun 5 — Jun 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 July or August, booked 64 days in advance, depart on a Tuesday or Saturday 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 May 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 May 6, 2026.
This Delta deal was found by Cheapflights users on 5/1. 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 7/19:00 am
BOS
- SAT
Nonstop4h 25m
Delta
Wed 7/291:20 pm
SAT
- BOS
Nonstop4h 27m
Delta
Deal found 5/1![Delta logo]()
$299
This Kiwi.com deal was found by Cheapflights users on 5/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/38:44 am
BOS
- SAT
1 stop25h 31m
Multiple Airlines
Mon 6/87:07 pm
SAT
- BOS
2 stops29h 20m
Multiple Airlines
Deal found 5/1![Multiple Airlines logo]()
$308
This Kiwi.com deal was found by Cheapflights users on 5/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/16:00 am
BOS
- SAT
2 stops13h 59m
Multiple Airlines
Sun 6/79:55 am
SAT
- BOS
1 stop24h 11m
Multiple Airlines
Deal found 5/2![Multiple Airlines logo]()
$315
This Kiwi.com deal was found by Cheapflights users on 5/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/38:44 am
BOS
- SAT
1 stop25h 31m
Multiple Airlines
Sun 6/79:55 am
SAT
- BOS
2 stops44h 57m
Multiple Airlines
Deal found 5/1![Multiple Airlines logo]()
$318
This Delta deal was found by Cheapflights users on 5/3. 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.
Wed 7/18:05 am
BOS
- SAT
1 stop8h 09m
Delta
Thu 7/306:16 pm
SAT
- BOS
1 stop6h 04m
Delta
Deal found 5/3![Delta logo]()
$319
This Kiwi.com deal was found by Cheapflights users on 5/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/278:44 am
BOS
- SAT
1 stop25h 26m
Multiple Airlines
Tue 6/97:51 pm
SAT
- BOS
2 stops28h 36m
Multiple Airlines
Deal found 5/1![Multiple Airlines logo]()
$322
This Southwest deal was found by Cheapflights users on 5/3. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/295:20 pm
BOS
- SAT
2 stops8h 40m
Southwest
Wed 7/13:35 pm
SAT
- BOS
1 stop6h 05m
Southwest
Deal found 5/3![Southwest logo]()
$324
This Southwest deal was found by Cheapflights users on 5/3. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/27:35 am
BOS
- SAT
2 stops8h 35m
Southwest
Tue 6/92:40 pm
SAT
- BOS
2 stops7h 00m
Southwest
Deal found 5/3![Southwest logo]()
$329
This Southwest deal was found by Cheapflights users on 5/3. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/115:45 am
BOS
- SAT
1 stop7h 05m
Southwest
Sun 6/1412:05 pm
SAT
- BOS
2 stops11h 50m
Southwest
Deal found 5/3![Southwest logo]()
$330
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 May 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 May 6, 2026.
This Delta deal was found by Cheapflights users on 5/5. 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 6/135:55 am
BOS
- SAT
1 stop6h 51m
Delta
Tue 6/161:20 pm
SAT
- BOS
Nonstop4h 28m
Delta
Deal found 5/5![Delta logo]()
$309
This Southwest deal was found by Cheapflights users on 5/4. 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 6/67:10 pm
BOS
- SAT
1 stop6h 00m
Southwest
Mon 6/153:10 pm
SAT
- BOS
2 stops7h 15m
Southwest
Deal found 5/4![Southwest logo]()
$324
This United Airlines deal was found by Cheapflights users on 5/3. 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 6/15:05 pm
BOS
- SAT
1 stop6h 53m
United Airlines
Sun 6/75:30 pm
SAT
- BOS
1 stop6h 44m
United Airlines
Deal found 5/3![United Airlines logo]()
$397
This Delta deal was found by Cheapflights users on 5/2. 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.
Tue 6/95:55 am
BOS
- SAT
1 stop6h 51m
Delta
Mon 6/151:20 pm
SAT
- BOS
Nonstop4h 28m
Delta
Deal found 5/2![Delta logo]()
$309
This Southwest deal was found by Cheapflights users on 5/5. 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.
Tue 6/26:20 pm
BOS
- SAT
1 stop6h 30m
Southwest
Fri 6/53:45 pm
SAT
- BOS
2 stops7h 20m
Southwest
Deal found 5/5![Southwest logo]()
$362
This Delta deal was found by Cheapflights users on 5/5. 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.
Thu 7/235:55 am
BOS
- SAT
1 stop6h 54m
Delta
Sun 7/262:26 pm
SAT
- BOS
1 stop8h 29m
Delta
Deal found 5/5![Delta logo]()
$339
This United Airlines deal was found by Cheapflights users on 5/1. 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.
Wed 6/35:45 am
BOS
- SAT
2 stops10h 36m
United Airlines
Sat 6/66:40 am
SAT
- BOS
1 stop8h 49m
United Airlines
Deal found 5/1![United Airlines logo]()
$424
This Southwest deal was found by Cheapflights users on 5/3. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/165:35 pm
BOS
- SAT
1 stop6h 15m
Southwest
Sun 10/181:40 pm
SAT
- BOS
1 stop6h 50m
Southwest
Deal found 5/3![Southwest logo]()
$417
This Southwest deal was found by Cheapflights users on 5/2. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/225:20 pm
BOS
- SAT
1 stop7h 00m
Southwest
Mon 6/293:10 pm
SAT
- BOS
2 stops7h 15m
Southwest
Deal found 5/2![Southwest logo]()
$422
This Southwest deal was found by Cheapflights users on 5/1. 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.
Thu 8/65:50 am
BOS
- SAT
2 stops9h 25m
Southwest
Sun 8/97:15 am
SAT
- BOS
1 stop5h 45m
Southwest
Deal found 5/1![Southwest logo]()
$422
This Southwest deal was found by Cheapflights users on 5/1. 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.
Thu 6/45:25 pm
BOS
- SAT
2 stops8h 35m
Southwest
Sun 6/712:05 pm
SAT
- BOS
2 stops11h 50m
Southwest
Deal found 5/1![Southwest logo]()
$424
Last-minute flights from Boston to San AntonioDiscover last-minute flight deals from Boston to San Antonio. Data last updated May 6, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to San Antonio. Data last updated May 6, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 5/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/278:44 am
BOS
- SAT
1 stop25h 26m
Multiple Airlines
Tue 6/97:51 pm
SAT
- BOS
2 stops28h 36m
Multiple Airlines
Deal found 5/1![Multiple Airlines logo]()
$322
This Kiwi.com deal was found by Cheapflights users on 5/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/16:00 am
BOS
- SAT
2 stops13h 59m
Multiple Airlines
Sun 6/79:55 am
SAT
- BOS
1 stop24h 11m
Multiple Airlines
Deal found 5/2![Multiple Airlines logo]()
$315
This Southwest deal was found by Cheapflights users on 5/3. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/27:35 am
BOS
- SAT
2 stops8h 35m
Southwest
Tue 6/92:40 pm
SAT
- BOS
2 stops7h 00m
Southwest
Deal found 5/3![Southwest logo]()
$329
This Kiwi.com deal was found by Cheapflights users on 5/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/38:44 am
BOS
- SAT
1 stop25h 31m
Multiple Airlines
Mon 6/87:07 pm
SAT
- BOS
2 stops29h 20m
Multiple Airlines
Deal found 5/1![Multiple Airlines logo]()
$308
This Delta deal was found by Cheapflights users on 5/1. 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 6/38:30 am
BOS
- SAT
Nonstop4h 40m
Delta
Mon 6/84:00 pm
SAT
- BOS
1 stop6h 54m
Delta
Deal found 5/1![Delta logo]()
$309
This Kiwi.com deal was found by Cheapflights users on 5/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/38:44 am
BOS
- SAT
1 stop25h 31m
Multiple Airlines
Sun 6/79:55 am
SAT
- BOS
2 stops44h 57m
Multiple Airlines
Deal found 5/1![Multiple Airlines logo]()
$318
This Delta deal was found by Cheapflights users on 5/1. 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 6/109:00 am
BOS
- SAT
Nonstop4h 25m
Delta
Wed 8/122:00 pm
SAT
- BOS
Nonstop4h 15m
Delta
Deal found 5/1![Delta logo]()
$299
This Southwest deal was found by Cheapflights users on 5/6. 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 6/118:00 pm
BOS
- SAT
1 stop6h 00m
Southwest
Sun 6/1412:05 pm
SAT
- BOS
2 stops11h 50m
Southwest
Deal found 5/6![Southwest logo]()
$330
This Southwest deal was found by Cheapflights users on 5/3. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/295:20 pm
BOS
- SAT
2 stops8h 40m
Southwest
Wed 7/13:35 pm
SAT
- BOS
1 stop6h 05m
Southwest
Deal found 5/3![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 May 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 May 6, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/278:44 am
BOS
- SAT
1 stop25h 26m
Multiple Airlines
Deal found 5/3![Multiple Airlines logo]()
$130
This Cheapflightsfares deal was found by Cheapflights users on 5/1. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/115:45 am
BOS
- SAT
1 stop13h 17m
Spirit Airlines
Deal found 5/1![Spirit Airlines logo]()
$133
This Kiwi.com deal was found by Cheapflights users on 5/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/306:00 am
BOS
- SAT
2 stops13h 59m
Frontier
Deal found 5/2![Frontier logo]()
$144
This Kiwi.com deal was found by Cheapflights users on 5/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/38:44 am
BOS
- SAT
1 stop25h 31m
Multiple Airlines
Deal found 5/6![Multiple Airlines logo]()
$146
This Kiwi.com deal was found by Cheapflights users on 5/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/276:00 am
BOS
- SAT
2 stops13h 59m
Frontier
Deal found 5/3![Frontier logo]()
$147
This Kiwi.com deal was found by Cheapflights users on 5/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/298:47 am
BOS
- SAT
1 stop25h 28m
Multiple Airlines
Deal found 5/4![Multiple Airlines logo]()
$157
This Southwest deal was found by Cheapflights users on 5/5. 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.
Fri 6/58:00 pm
BOS
- SAT
1 stop6h 00m
Southwest
Deal found 5/5![Southwest logo]()
$160
This Kiwi.com deal was found by Cheapflights users on 5/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/48:43 am
BOS
- SAT
1 stop25h 32m
Multiple Airlines
Deal found 5/5![Multiple Airlines logo]()
$162
This Southwest deal was found by Cheapflights users on 5/5. 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.
Wed 6/102:25 pm
BOS
- SAT
2 stops8h 35m
Southwest
Deal found 5/5![Southwest logo]()
$165
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 May 6, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $299 (Delta) |
One-way from | $130 (Kiwi.com) |
Popular in | April |
Cheapest in | July |
Average price | $417 |
Good round-trip deal | $398 or less |
Good one-way deal | $218 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 May 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
Quickest round-trip
BostonSan Antonio
BOS - SAT
BOSSAT
Boston Logan Intl
Sat 6/13
5:55 am-11:46 am
1 stop6h 51m
San Antonio
Tue 6/16
1:20 pm-6:48 pm
Nonstop4h 28m
$309
BostonSan Antonio
BOS - SAT
BOSSAT
Boston Logan Intl
Tue 6/9
5:55 am-11:46 am
1 stop6h 51m
San Antonio
Mon 6/15
1:20 pm-6:48 pm
Nonstop4h 28m
$309
BostonSan Antonio
BOS - SAT
BOSSAT
Boston Logan Intl
Sat 6/6
7:10 pm-12:10 am
1 stop6h 00m
San Antonio
Mon 6/15
3:10 pm-11:25 pm
2 stops7h 15m
$324
BostonSan Antonio
BOS - SAT
BOSSAT
Boston Logan Intl
Thu 7/23
5:55 am-11:49 am
1 stop6h 54m
San Antonio
Sun 7/26
2:26 pm-11:55 pm
1 stop8h 29m
$339
BostonSan Antonio
BOS - SAT
BOSSAT
Boston Logan Intl
Tue 6/2
6:20 pm-11:50 pm
1 stop6h 30m
San Antonio
Fri 6/5
3:45 pm-12:05 am
2 stops7h 20m
$362
BostonSan Antonio
BOS - SAT
BOSSAT
Boston Logan Intl
Mon 6/1
5:05 pm-10:58 pm
1 stop6h 53m
San Antonio
Sun 6/7
5:30 pm-1:14 am
1 stop6h 44m
$397
BostonSan Antonio
BOS - SAT
BOSSAT
Boston Logan Intl
Fri 10/16
5:35 pm-10:50 pm
1 stop6h 15m
San Antonio
Sun 10/18
1:40 pm-9:30 pm
1 stop6h 50m
$417
BostonSan Antonio
BOS - SAT
BOSSAT
Boston Logan Intl
Mon 6/22
5:20 pm-11:20 pm
1 stop7h 00m
San Antonio
Mon 6/29
3:10 pm-11:25 pm
2 stops7h 15m
$422
BostonSan Antonio
BOS - SAT
BOSSAT
Boston Logan Intl
Thu 8/6
5:50 am-2:15 pm
2 stops9h 25m
San Antonio
Sun 8/9
7:15 am-2:00 pm
1 stop5h 45m
$422
BostonSan Antonio
BOS - SAT
BOSSAT
Boston Logan Intl
Wed 6/3
5:45 am-3:21 pm
2 stops10h 36m
San Antonio
Sat 6/6
6:40 am-4:29 pm
1 stop8h 49m
$424
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 May.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
- 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
Prices
More
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 63 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, July is the cheapest month in which you can book a flight from Boston to San Antonio (average of $329). Flying from Boston to San Antonio in April is currently the most expensive (average of $477). 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 May 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.
What’s the top layover airport for flights from Boston to San Antonio?
Share of 1-stop round-trip flights from Boston to San Antonio chosen by Cheapflights users in the past 12 months, using the same layover each way.
St. Louis (STL) – chosen by Cheapflights users on 67% of 1-stop itineraries from Boston to San Antonio on Cheapflights.
What’s the cheapest layover airport for flights from Boston to San Antonio?
Average round-trip fare for 1-stop flights from Boston to San Antonio, chosen by Cheapflights users in the past 12 months, with the same layover each way.
Fort Lauderdale (FLL) is the most affordable 1-stop option, with an average round-trip price of $239.
What’s the fastest layover option from Boston to San Antonio?
Shortest average travel time for 1-stop one-way flights from Boston to San Antonio, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.
Flights via St. Louis (STL) have the shortest average one-way travel time for 1-stop routes: 6h 07m.
Which airport typically offers the quickest layover for flights from Boston to San Antonio?
Average layover duration for 1-stop one-way flights from Boston to San Antonio, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via St. Louis (STL) offer the fastest connection on this route, with an average layover time of 0h 48m.
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 May 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
Entertainment
7.5
Food
7.0
Comfort
8.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Overall
7.9
Entertainment
7.5
Food
7.0
Comfort
8.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Overall
7.9
Entertainment
7.5
Food
7.0
Comfort
8.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Overall
7.9
Entertainment
7.5
Food
7.0
Comfort
8.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Overall
7.9
Entertainment
7.5
Food
7.0
Comfort
8.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Overall
7.9
Entertainment
7.5
Food
7.0
Comfort
8.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
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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Top 7 airlines flying from Boston to San Antonio
Discover the top 7 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 May 6, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$102 | Average$286 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$115 | Average$227 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$163 | Average$239 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$234 | Average$378 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$250 | Average$444 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$251 | Average$399 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$258 | Average$403 | FlexibilityNo cancel fee | On-time69% |