$101+ 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 5/6. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SAT
May 22 — May 291
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
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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 June, 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 April 22, 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 April 22, 2026.
This Southwest deal was found by Cheapflights users on 4/22. 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 5/1311:40 am
BOS
- SAT
1 stop11h 00m
Southwest
Tue 5/193:50 pm
SAT
- BOS
1 stop5h 30m
Southwest
Deal found 4/22![Southwest logo]()
$277
This Kiwi.com deal was found by Cheapflights users on 4/21. 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 5/69:34 am
BOS
- SAT
1 stop23h 41m
Multiple Airlines
Thu 5/77:54 pm
SAT
- BOS
2 stops36h 18m
Multiple Airlines
Deal found 4/21![Multiple Airlines logo]()
$295
This Delta deal was found by Cheapflights users on 4/21. 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 7/221:20 pm
SAT
- BOS
Nonstop4h 27m
Delta
Deal found 4/21![Delta logo]()
$299
This Southwest deal was found by Cheapflights users on 4/22. 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 5/125:35 am
BOS
- SAT
1 stop7h 20m
Southwest
Tue 5/193:45 pm
SAT
- BOS
1 stop5h 55m
Southwest
Deal found 4/22![Southwest logo]()
$302
This American Airlines deal was found by Cheapflights users on 4/21. 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.
Thu 4/233:05 pm
BOS
- SAT
1 stop6h 53m
American Airlines
Tue 5/57:14 am
SAT
- BOS
1 stop6h 13m
American Airlines
Deal found 4/21![American Airlines logo]()
$311
This Southwest deal was found by Cheapflights users on 4/20. 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 5/265:55 pm
BOS
- SAT
1 stop6h 20m
Southwest
Fri 5/294:45 pm
SAT
- BOS
1 stop5h 25m
Southwest
Deal found 4/20![Southwest logo]()
$312
This Kiwi.com deal was found by Cheapflights users on 4/20. 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 5/96:00 am
BOS
- SAT
2 stops13h 59m
Multiple Airlines
Mon 5/115:26 pm
SAT
- BOS
1 stop29h 28m
Multiple Airlines
Deal found 4/20![Multiple Airlines logo]()
$313
This American Airlines deal was found by Cheapflights users on 4/19. 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.
Fri 5/83:18 pm
BOS
- SAT
1 stop7h 39m
American Airlines
Sun 5/245:00 am
SAT
- BOS
1 stop5h 49m
American Airlines
Deal found 4/19![American Airlines logo]()
$315
This Southwest deal was found by Cheapflights users on 4/21. 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
Wed 8/121:30 pm
SAT
- BOS
2 stops7h 45m
Southwest
Deal found 4/21![Southwest logo]()
$316
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 April 22, 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 April 22, 2026.
This Delta deal was found by Cheapflights users on 4/21. 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 9/169:15 am
BOS
- SAT
Nonstop4h 37m
Delta
Sun 9/202:10 pm
SAT
- BOS
1 stop8h 46m
Delta
Deal found 4/21![Delta logo]()
$309
This Southwest deal was found by Cheapflights users on 4/22. 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 5/2811:35 am
BOS
- SAT
2 stops12h 25m
Southwest
Mon 6/13:05 pm
SAT
- BOS
2 stops7h 05m
Southwest
Deal found 4/22![Southwest logo]()
$372
This United Airlines deal was found by Cheapflights users on 4/20. 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 8/279:34 am
BOS
- SAT
2 stops12h 42m
United Airlines
Sun 8/306:00 am
SAT
- BOS
1 stop7h 22m
United Airlines
Deal found 4/20![United Airlines logo]()
$464
This Delta deal was found by Cheapflights users on 4/18. 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 9/255:30 am
BOS
- SAT
1 stop6h 41m
Delta
Mon 9/288:00 am
SAT
- BOS
1 stop8h 57m
Delta
Deal found 4/18![Delta logo]()
$319
This Delta deal was found by Cheapflights users on 4/20. 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 8/278:00 am
BOS
- SAT
1 stop6h 07m
Delta
Sun 8/302:10 pm
SAT
- BOS
1 stop7h 39m
Delta
Deal found 4/20![Delta logo]()
$319
This Southwest deal was found by Cheapflights users on 4/17. 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 7/37:55 am
BOS
- SAT
2 stops13h 00m
Southwest
Mon 7/65:25 pm
SAT
- BOS
1 stop5h 45m
Southwest
Deal found 4/17![Southwest logo]()
$384
This Southwest deal was found by Cheapflights users on 4/19. 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 10/175:35 am
BOS
- SAT
2 stops9h 35m
Southwest
Wed 10/216:50 am
SAT
- BOS
1 stop5h 45m
Southwest
Deal found 4/19![Southwest logo]()
$404
This Delta deal was found by Cheapflights users on 4/21. 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 7/39:00 am
BOS
- SAT
Nonstop4h 25m
Delta
Mon 7/62:30 pm
SAT
- BOS
1 stop8h 27m
Delta
Deal found 4/21![Delta logo]()
$388
This Delta deal was found by Cheapflights users on 4/18. 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 5/158:30 am
BOS
- SAT
Nonstop4h 40m
Delta
Mon 5/186:21 pm
SAT
- BOS
1 stop6h 02m
Delta
Deal found 4/18![Delta logo]()
$429
This Delta deal was found by Cheapflights users on 4/22. 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 5/218:30 am
BOS
- SAT
Nonstop4h 40m
Delta
Sun 5/241:14 pm
SAT
- BOS
Nonstop4h 15m
Delta
Deal found 4/22![Delta logo]()
$438
This Delta deal was found by Cheapflights users on 4/20. 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 5/59:05 am
BOS
- SAT
Nonstop4h 42m
Delta
Tue 5/121:06 pm
SAT
- BOS
Nonstop4h 19m
Delta
Deal found 4/20![Delta logo]()
$449
Last-minute flights from Boston to San AntonioDiscover last-minute flight deals from Boston to San Antonio. Data last updated April 22, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to San Antonio. Data last updated April 22, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 4/17. 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.
Mon 5/45:45 am
BOS
- SAT
1 stop11h 31m
Spirit Airlines
Mon 5/115:26 pm
SAT
- BOS
1 stop29h 28m
Spirit Airlines
Deal found 4/17![Spirit Airlines logo]()
$313
This Kiwi.com deal was found by Cheapflights users on 4/17. 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.
Tue 5/56:00 am
BOS
- SAT
2 stops13h 59m
Multiple Airlines
Thu 5/75:26 pm
SAT
- BOS
1 stop29h 28m
Multiple Airlines
Deal found 4/17![Multiple Airlines logo]()
$317
This Kiwi.com deal was found by Cheapflights users on 4/21. 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 5/69:34 am
BOS
- SAT
1 stop23h 41m
Multiple Airlines
Thu 5/77:54 pm
SAT
- BOS
2 stops36h 18m
Multiple Airlines
Deal found 4/21![Multiple Airlines logo]()
$295
This Kiwi.com deal was found by Cheapflights users on 4/17. 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.
Wed 5/69:34 am
BOS
- SAT
1 stop23h 41m
Multiple Airlines
Tue 5/128:59 pm
SAT
- BOS
2 stops35h 13m
Multiple Airlines
Deal found 4/17![Multiple Airlines logo]()
$311
This American Airlines deal was found by Cheapflights users on 4/19. 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.
Fri 5/83:18 pm
BOS
- SAT
1 stop7h 39m
American Airlines
Sun 5/245:00 am
SAT
- BOS
1 stop5h 49m
American Airlines
Deal found 4/19![American Airlines logo]()
$315
This Kiwi.com deal was found by Cheapflights users on 4/17. 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.
Sat 5/912:01 pm
BOS
- SAT
2 stops21h 54m
Multiple Airlines
Mon 5/115:26 pm
SAT
- BOS
1 stop29h 28m
Multiple Airlines
Deal found 4/17![Multiple Airlines logo]()
$314
This Southwest deal was found by Cheapflights users on 4/22. 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 5/125:35 am
BOS
- SAT
1 stop7h 20m
Southwest
Tue 5/193:45 pm
SAT
- BOS
1 stop5h 55m
Southwest
Deal found 4/22![Southwest logo]()
$302
This Delta deal was found by Cheapflights users on 4/19. 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 5/208:30 am
BOS
- SAT
Nonstop4h 40m
Delta
Wed 5/272:35 pm
SAT
- BOS
1 stop8h 19m
Delta
Deal found 4/19![Delta logo]()
$309
This Southwest deal was found by Cheapflights users on 4/20. 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 5/265:55 pm
BOS
- SAT
1 stop6h 20m
Southwest
Fri 5/294:45 pm
SAT
- BOS
1 stop5h 25m
Southwest
Deal found 4/20![Southwest logo]()
$312
This Delta deal was found by Cheapflights users on 4/22. 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 5/288:30 am
BOS
- SAT
Nonstop4h 40m
Delta
Mon 6/11:06 pm
SAT
- BOS
Nonstop4h 19m
Delta
Deal found 4/22![Delta logo]()
$299
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 April 22, 2026.
Search for one-way flight options from Boston to San Antonio. Find affordable one-way fares based on user searches. Data last updated April 22, 2026.
This American Airlines deal was found by Cheapflights users on 4/21. 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.
Wed 5/610:51 am
BOS
- SAT
1 stop7h 01m
American Airlines
Deal found 4/21![American Airlines logo]()
$101
This Southwest deal was found by Cheapflights users on 4/20. 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 8/1910:50 am
BOS
- SAT
1 stop8h 10m
Southwest
Deal found 4/20![Southwest logo]()
$106
This American Airlines deal was found by Cheapflights users on 4/20. 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.
Tue 4/283:18 pm
BOS
- SAT
1 stop8h 34m
American Airlines
Deal found 4/20![American Airlines logo]()
$111
This American Airlines deal was found by Cheapflights users on 4/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/115:54 pm
BOS
- SAT
1 stop7h 02m
American Airlines
Deal found 4/17![American Airlines logo]()
$116
This Cheapflightsfares deal was found by Cheapflights users on 4/19. 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.
Mon 5/115:45 am
BOS
- SAT
1 stop11h 31m
Spirit Airlines
Deal found 4/19![Spirit Airlines logo]()
$124
This Kiwi.com deal was found by Cheapflights users on 4/21. 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 5/69:34 am
BOS
- SAT
1 stop23h 41m
Multiple Airlines
Deal found 4/21![Multiple Airlines logo]()
$130
This Kiwi.com deal was found by Cheapflights users on 4/17. 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.
Tue 5/129:31 am
BOS
- SAT
2 stops34h 28m
Frontier
Deal found 4/17![Frontier logo]()
$131
This Southwest deal was found by Cheapflights users on 4/19. 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 5/277:35 am
BOS
- SAT
2 stops8h 35m
Southwest
Deal found 4/19![Southwest logo]()
$135
This American Airlines deal was found by Cheapflights users on 4/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/245:57 pm
BOS
- SAT
1 stop7h 02m
American Airlines
Deal found 4/17![American Airlines logo]()
$141
This Kiwi.com deal was found by Cheapflights users on 4/17. 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.
Sun 5/105:45 am
BOS
- SAT
1 stop11h 31m
Spirit Airlines
Deal found 4/17![Spirit Airlines logo]()
$142
This American Airlines deal was found by Cheapflights users on 4/21. 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.
Mon 4/274:34 pm
BOS
- SAT
1 stop8h 25m
American Airlines
Deal found 4/21![American Airlines logo]()
$146
This Kiwi.com deal was found by Cheapflights users on 4/20. 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.
Tue 5/56:00 am
BOS
- SAT
2 stops13h 59m
Frontier
Deal found 4/20![Frontier logo]()
$147
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 April 22, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $295 (Kiwi.com) |
One-way from | $101 (American Airlines) |
Popular in | April |
Cheapest in | July |
Average price | $477 |
Good round-trip deal | $431 or less |
Good one-way deal | $208 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 April 22, 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
Wed 9/16
9:15 am-12:52 pm
Nonstop4h 37m
San Antonio
Sun 9/20
2:10 pm-11:56 pm
1 stop8h 46m
$309
BostonSan Antonio
BOS - SAT
BOSSAT
Boston Logan Intl
Fri 9/25
5:30 am-11:11 am
1 stop6h 41m
San Antonio
Mon 9/28
8:00 am-5:57 pm
1 stop8h 57m
$319
BostonSan Antonio
BOS - SAT
BOSSAT
Boston Logan Intl
Thu 8/27
8:00 am-1:07 pm
1 stop6h 07m
San Antonio
Sun 8/30
2:10 pm-10:49 pm
1 stop7h 39m
$319
BostonSan Antonio
BOS - SAT
BOSSAT
Boston Logan Intl
Thu 5/28
11:35 am-11:00 pm
2 stops12h 25m
San Antonio
Mon 6/1
3:05 pm-11:10 pm
2 stops7h 05m
$372
BostonSan Antonio
BOS - SAT
BOSSAT
Boston Logan Intl
Fri 7/3
7:55 am-7:55 pm
2 stops13h 00m
San Antonio
Mon 7/6
5:25 pm-12:10 am
1 stop5h 45m
$384
BostonSan Antonio
BOS - SAT
BOSSAT
Boston Logan Intl
Fri 7/3
9:00 am-12:25 pm
Nonstop4h 25m
San Antonio
Mon 7/6
2:30 pm-11:57 pm
1 stop8h 27m
$388
BostonSan Antonio
BOS - SAT
BOSSAT
Boston Logan Intl
Sat 10/17
5:35 am-2:10 pm
2 stops9h 35m
San Antonio
Wed 10/21
6:50 am-1:35 pm
1 stop5h 45m
$404
BostonSan Antonio
BOS - SAT
BOSSAT
Boston Logan Intl
Fri 5/15
8:30 am-12:10 pm
Nonstop4h 40m
San Antonio
Mon 5/18
6:21 pm-1:23 am
1 stop6h 02m
$429
Quickest round-trip
BostonSan Antonio
BOS - SAT
BOSSAT
Boston Logan Intl
Thu 5/21
8:30 am-12:10 pm
Nonstop4h 40m
San Antonio
Sun 5/24
1:14 pm-6:29 pm
Nonstop4h 15m
$438
BostonSan Antonio
BOS - SAT
BOSSAT
Boston Logan Intl
Tue 5/5
9:05 am-12:47 pm
Nonstop4h 42m
San Antonio
Tue 5/12
1:06 pm-6:25 pm
Nonstop4h 19m
$449
Showing 1-10 of 23 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 April.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 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
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How far ahead should I book a flight from Boston to San Antonio?
Use this chart to determine the optimal time to book a round-trip flight from Boston to San Antonio. Price data was last updated on April 17, 2026.
The best time to book flights from Boston to San Antonio is 64 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 $338). 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 April 22, 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.
Nashville (BNA) – chosen by Cheapflights users on 50% 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 Nashville (BNA) have the shortest average one-way travel time for 1-stop routes: 6h 10m.
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 Nashville (BNA) 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 April 22, 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
Comfort
8.0
Overall
8.0
Boarding
8.1
Food
7.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Crew
8.6
Comfort
8.0
Overall
8.0
Boarding
8.1
Food
7.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Crew
8.6
Comfort
8.0
Overall
8.0
Boarding
8.1
Food
7.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Crew
8.6
Comfort
8.0
Overall
8.0
Boarding
8.1
Food
7.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Crew
8.6
Comfort
8.0
Overall
8.0
Boarding
8.1
Food
7.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Crew
8.6
Comfort
8.0
Overall
8.0
Boarding
8.1
Food
7.0
Entertainment
7.5
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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Boston and San Antonio flights
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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 April 22, 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$257 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$244 | Average$442 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$251 | Average$390 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$258 | Average$409 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$258 | Average$389 | FlexibilityNo cancel fee | On-time71% |