$124+ Cheap flights from Boston to San Antonio (BOS - SAT)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/27. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SAT
Aug 1 — Aug 81
Round-trip
1 adult, Economy
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Find cheap flights from Boston to San Antonio with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Boston Logan Intl to San Antonio are usually found in January or August, booked 51 days in advance, depart on a Tuesday or Friday and return on a Tuesday
Cheap flight deals from Boston to San Antonio
Cheapest
Best
Last-minute
One-way
Cheapest flights from Boston to San AntonioExplore the most affordable flight options available from Boston to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 2, 2026.
Explore the most affordable flight options available from Boston to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 2, 2026.
This Southwest deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/45:25 am
BOS
- SAT
1 stop6h 35m
Southwest
Fri 8/72:20 pm
SAT
- BOS
1 stop9h 10m
Southwest
Deal found 6/30![Southwest logo]()
$306
This United Airlines deal was found by Cheapflights users on 7/1. 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 9/185:38 pm
BOS
- SAT
1 stop6h 06m
United Airlines
Sat 9/197:35 am
SAT
- BOS
2 stops8h 13m
United Airlines
Deal found 7/1![United Airlines logo]()
$307
This Southwest deal was found by Cheapflights users on 6/30. 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 7/235:35 am
BOS
- SAT
2 stops8h 40m
Southwest
Tue 7/286:10 am
SAT
- BOS
2 stops7h 50m
Southwest
Deal found 6/30![Southwest logo]()
$308
This Delta deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/76:05 am
BOS
- SAT
1 stop6h 37m
Delta
Mon 8/102:43 pm
SAT
- BOS
1 stop6h 42m
Delta
Deal found 6/29![Delta logo]()
$309
This Southwest deal was found by Cheapflights users on 7/2. 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.
Thu 8/209:40 am
BOS
- SAT
2 stops8h 30m
Southwest
Sun 8/236:20 am
SAT
- BOS
1 stop5h 55m
Southwest
Deal found 7/2![Southwest logo]()
$311
This United Airlines deal was found by Cheapflights users on 6/27. 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 7/206:00 am
BOS
- SAT
1 stop7h 29m
United Airlines
Mon 8/35:30 am
SAT
- BOS
1 stop5h 58m
United Airlines
Deal found 6/27![United Airlines logo]()
$314
This Southwest deal was found by Cheapflights users on 7/2. 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.
Thu 8/205:25 am
BOS
- SAT
2 stops8h 25m
Southwest
Fri 8/212:05 pm
SAT
- BOS
2 stops7h 05m
Southwest
Deal found 7/2![Southwest logo]()
$316
This Delta deal was found by Cheapflights users on 7/1. 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 7/225:30 am
BOS
- SAT
1 stop9h 08m
Delta
Sat 7/255:00 pm
SAT
- BOS
1 stop7h 20m
Delta
Deal found 7/1![Delta logo]()
$319
This Southwest deal was found by Cheapflights users on 7/1. 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.
Fri 9/1812:40 pm
BOS
- SAT
1 stop11h 35m
Southwest
Sat 9/196:35 am
SAT
- BOS
2 stops8h 15m
Southwest
Deal found 7/1![Southwest logo]()
$320
This Southwest deal was found by Cheapflights users on 6/29. 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 7/285:50 am
BOS
- SAT
1 stop5h 45m
Southwest
Tue 8/49:20 am
SAT
- BOS
2 stops8h 20m
Southwest
Deal found 6/29![Southwest logo]()
$323
This Southwest deal was found by Cheapflights users on 7/1. 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 7/275:35 am
BOS
- SAT
1 stop5h 40m
Southwest
Thu 7/303:40 pm
SAT
- BOS
2 stops7h 30m
Southwest
Deal found 7/1![Southwest logo]()
$324
Best flights from Boston to San AntonioDiscover carefully curated flight deals from Boston to San Antonio that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 2, 2026.
Discover carefully curated flight deals from Boston to San Antonio that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 2, 2026.
This Delta deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/75:30 am
BOS
- SAT
1 stop6h 04m
Delta
Tue 8/116:25 am
SAT
- BOS
1 stop6h 27m
Delta
Deal found 6/28![Delta logo]()
$309
This Southwest deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/165:25 am
BOS
- SAT
2 stops8h 25m
Southwest
Sat 9/1912:20 pm
SAT
- BOS
2 stops8h 20m
Southwest
Deal found 6/28![Southwest logo]()
$319
This United Airlines deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/115:38 pm
BOS
- SAT
1 stop6h 01m
United Airlines
Tue 8/189:30 am
SAT
- BOS
2 stops11h 29m
United Airlines
Deal found 6/28![United Airlines logo]()
$364
This Delta deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/79:01 am
BOS
- SAT
Nonstop4h 24m
Delta
Mon 8/101:20 pm
SAT
- BOS
Nonstop4h 27m
Delta
Deal found 6/28![Delta logo]()
$318
This Southwest deal was found by Cheapflights users on 6/27. 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 8/2810:30 am
BOS
- SAT
1 stop7h 30m
Southwest
Sun 8/305:10 am
SAT
- BOS
2 stops8h 45m
Southwest
Deal found 6/27![Southwest logo]()
$324
This Southwest deal was found by Cheapflights users on 7/1. 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.
Fri 7/315:35 am
BOS
- SAT
1 stop5h 40m
Southwest
Sun 8/212:05 pm
SAT
- BOS
2 stops11h 50m
Southwest
Deal found 7/1![Southwest logo]()
$330
This United Airlines deal was found by Cheapflights users on 6/28. 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.
Sat 9/195:45 am
BOS
- SAT
2 stops11h 46m
United Airlines
Tue 9/226:30 am
SAT
- BOS
2 stops11h 49m
United Airlines
Deal found 6/28![United Airlines logo]()
$369
This Southwest deal was found by Cheapflights users on 6/29. 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 7/205:35 am
BOS
- SAT
1 stop5h 40m
Southwest
Thu 7/233:45 pm
SAT
- BOS
1 stop7h 25m
Southwest
Deal found 6/29![Southwest logo]()
$339
This Delta deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/189:01 am
BOS
- SAT
Nonstop4h 24m
Delta
Mon 10/121:35 pm
SAT
- BOS
Nonstop4h 24m
Delta
Deal found 6/29![Delta logo]()
$388
This Southwest deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/48:15 am
BOS
- SAT
2 stops8h 25m
Southwest
Thu 8/63:25 pm
SAT
- BOS
1 stop5h 55m
Southwest
Deal found 6/29![Southwest logo]()
$364
This Southwest deal was found by Cheapflights users on 6/28. 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 8/75:25 am
BOS
- SAT
2 stops8h 25m
Southwest
Mon 8/105:45 am
SAT
- BOS
2 stops7h 45m
Southwest
Deal found 6/28![Southwest logo]()
$385
Last-minute flights from Boston to San AntonioDiscover last-minute flight deals from Boston to San Antonio. Data last updated July 2, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to San Antonio. Data last updated July 2, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 6/27. 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 7/206:00 am
BOS
- SAT
1 stop7h 29m
United Airlines
Mon 8/35:30 am
SAT
- BOS
1 stop5h 58m
United Airlines
Deal found 6/27![United Airlines logo]()
$314
This Delta deal was found by Cheapflights users on 7/1. 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 7/225:30 am
BOS
- SAT
1 stop9h 08m
Delta
Sat 7/255:00 pm
SAT
- BOS
1 stop7h 20m
Delta
Deal found 7/1![Delta logo]()
$319
This Southwest deal was found by Cheapflights users on 6/30. 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 7/235:35 am
BOS
- SAT
2 stops8h 40m
Southwest
Tue 7/286:10 am
SAT
- BOS
2 stops7h 50m
Southwest
Deal found 6/30![Southwest logo]()
$308
This Southwest deal was found by Cheapflights users on 7/1. 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 7/275:35 am
BOS
- SAT
1 stop5h 40m
Southwest
Thu 7/303:40 pm
SAT
- BOS
2 stops7h 30m
Southwest
Deal found 7/1![Southwest logo]()
$324
This Southwest deal was found by Cheapflights users on 6/29. 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 7/285:50 am
BOS
- SAT
1 stop5h 45m
Southwest
Tue 8/49:20 am
SAT
- BOS
2 stops8h 20m
Southwest
Deal found 6/29![Southwest logo]()
$323
This Southwest deal was found by Cheapflights users on 7/1. 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.
Fri 7/315:35 am
BOS
- SAT
1 stop5h 40m
Southwest
Sun 8/212:05 pm
SAT
- BOS
2 stops11h 50m
Southwest
Deal found 7/1![Southwest logo]()
$330
This Southwest deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/45:25 am
BOS
- SAT
1 stop6h 35m
Southwest
Fri 8/72:20 pm
SAT
- BOS
1 stop9h 10m
Southwest
Deal found 6/30![Southwest logo]()
$306
This Delta deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/76:05 am
BOS
- SAT
1 stop6h 37m
Delta
Mon 8/102:43 pm
SAT
- BOS
1 stop6h 42m
Delta
Deal found 6/29![Delta logo]()
$309
This Southwest deal was found by Cheapflights users on 7/1. 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 8/115:35 am
BOS
- SAT
2 stops8h 15m
Southwest
Mon 8/175:35 am
SAT
- BOS
2 stops7h 55m
Southwest
Deal found 7/1![Southwest logo]()
$316
This Southwest deal was found by Cheapflights users on 6/28. 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 8/285:50 am
BOS
- SAT
2 stops8h 00m
Southwest
Sun 8/305:10 am
SAT
- BOS
2 stops8h 45m
Southwest
Deal found 6/28![Southwest logo]()
$329
One-way flights from Boston to San AntonioSearch for one-way flight options from Boston to San Antonio. Find affordable one-way fares based on user searches. Data last updated July 2, 2026.
Search for one-way flight options from Boston to San Antonio. Find affordable one-way fares based on user searches. Data last updated July 2, 2026.
This Super.com deal was found by Cheapflights users on 6/29. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2710:04 am
BOS
- SAT
1 stop23h 52m
Frontier
Deal found 6/29![Frontier logo]()
$124
This Southwest deal was found by Cheapflights users on 6/27. 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 7/285:50 am
BOS
- SAT
1 stop5h 45m
Southwest
Deal found 6/27![Southwest logo]()
$130
This CheapOair deal was found by Cheapflights users on 7/1. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2810:04 am
BOS
- SAT
1 stop23h 52m
Frontier
Deal found 7/1![Frontier logo]()
$131
This United Airlines deal was found by Cheapflights users on 6/28. 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 9/103:45 pm
BOS
- SAT
1 stop6h 31m
United Airlines
Deal found 6/28![United Airlines logo]()
$134
This Southwest deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/185:35 am
BOS
- SAT
2 stops8h 15m
Southwest
Deal found 6/29![Southwest logo]()
$135
This Southwest deal was found by Cheapflights users on 7/1. 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 7/295:25 am
BOS
- SAT
1 stop6h 20m
Southwest
Deal found 7/1![Southwest logo]()
$139
This Southwest deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/115:35 am
BOS
- SAT
1 stop6h 15m
Southwest
Deal found 6/30![Southwest logo]()
$147
This Southwest deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/135:50 am
BOS
- SAT
2 stops9h 25m
Southwest
Deal found 6/29![Southwest logo]()
$152
This Kiwi.com deal was found by Cheapflights users on 6/29. 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 8/3012:45 pm
BOS
- SAT
2 stops23h 05m
Multiple Airlines
Deal found 6/29![Multiple Airlines logo]()
$155
This Kiwi.com deal was found by Cheapflights users on 6/28. 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 8/2312:45 pm
BOS
- SAT
2 stops23h 05m
Multiple Airlines
Deal found 6/28![Multiple Airlines logo]()
$156
This Kiwi.com deal was found by Cheapflights users on 6/30. 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 7/298:41 am
BOS
- SAT
1 stop25h 34m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$160
This Kiwi.com deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2712:45 pm
BOS
- SAT
2 stops23h 05m
Multiple Airlines
Deal found 6/27![Multiple Airlines logo]()
$163
Find flight deals from Boston to San Antonio
Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to San Antonio (SAT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 2, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $306 (Southwest) |
One-way from | $124 (Super.com) |
Popular in | April |
Cheapest in | January |
Average price | $399 |
Good round-trip deal | $339 or less |
Good one-way deal | $288 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Boston to San Antonio that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 2, 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
Fri 8/7
5:30 am-10:34 am
1 stop6h 04m
San Antonio
Tue 8/11
6:25 am-1:52 pm
1 stop6h 27m
$309
BostonSan Antonio
BOS - SAT
BOSSAT
Boston Logan Intl
Fri 8/7
9:01 am-12:25 pm
Nonstop4h 24m
San Antonio
Mon 8/10
1:20 pm-6:47 pm
Nonstop4h 27m
$318
BostonSan Antonio
BOS - SAT
BOSSAT
Boston Logan Intl
Wed 9/16
5:25 am-12:50 pm
2 stops8h 25m
San Antonio
Sat 9/19
12:20 pm-9:40 pm
2 stops8h 20m
$319
BostonSan Antonio
BOS - SAT
BOSSAT
Boston Logan Intl
Fri 8/28
10:30 am-5:00 pm
1 stop7h 30m
San Antonio
Sun 8/30
5:10 am-2:55 pm
2 stops8h 45m
$324
BostonSan Antonio
BOS - SAT
BOSSAT
Boston Logan Intl
Fri 7/31
5:35 am-10:15 am
1 stop5h 40m
San Antonio
Sun 8/2
12:05 pm-12:55 am
2 stops11h 50m
$330
BostonSan Antonio
BOS - SAT
BOSSAT
Boston Logan Intl
Mon 7/20
5:35 am-10:15 am
1 stop5h 40m
San Antonio
Thu 7/23
3:45 pm-12:10 am
1 stop7h 25m
$339
BostonSan Antonio
BOS - SAT
BOSSAT
Boston Logan Intl
Tue 8/11
5:38 pm-10:39 pm
1 stop6h 01m
San Antonio
Tue 8/18
9:30 am-9:59 pm
2 stops11h 29m
$364
BostonSan Antonio
BOS - SAT
BOSSAT
Boston Logan Intl
Tue 8/4
8:15 am-3:40 pm
2 stops8h 25m
San Antonio
Thu 8/6
3:25 pm-10:20 pm
1 stop5h 55m
$364
BostonSan Antonio
BOS - SAT
BOSSAT
Boston Logan Intl
Sat 9/19
5:45 am-4:31 pm
2 stops11h 46m
San Antonio
Tue 9/22
6:30 am-7:19 pm
2 stops11h 49m
$369
BostonSan Antonio
BOS - SAT
BOSSAT
Boston Logan Intl
Fri 8/7
5:25 am-12:50 pm
2 stops8h 25m
San Antonio
Mon 8/10
5:45 am-2:30 pm
2 stops7h 45m
$385
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 July.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Boston-San Antonio flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Boston-San Antonio flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Boston-San Antonio flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Boston-San Antonio flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Boston-San Antonio flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Boston to San Antonio
Have a flexible travel schedule? Discover the best time to fly to San Antonio from Boston with our price prediction graph.
BOS-SAT
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Boston to San Antonio
How far ahead should I book a flight from Boston to San Antonio?
The best time to book flights from Boston to San Antonio is 50 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from Boston to San Antonio?
Currently, January is the cheapest month in which you can book a flight from Boston to San Antonio (average of $362). Flying from Boston to San Antonio in April is currently the most expensive (average of $481). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from BOS to SAT?
Find hourly flight availability from Boston to San Antonio. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 2, 2026.
When flying from Boston to San Antonio, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Reviews of airlines servicing San Antonio
Get insights into the airlines that provide service to San Antonio. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Antonio. Reviews last updated July 2, 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
Food
7.0
Comfort
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Overall
7.9
Food
7.0
Comfort
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Overall
7.9
Food
7.0
Comfort
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Overall
7.9
Food
7.0
Comfort
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Overall
7.9
Food
7.0
Comfort
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Overall
7.9
Food
7.0
Comfort
8.0
Boarding
8.1
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.
Traveling to a place near San Antonio?
Book flights to San Antonio if you plan to visit one of these locationsNew Braunfels
Kerrville
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Boston and San Antonio flights
Browse other Boston and San Antonio flight options. Last updated on July 2, 2026.
Other flights from Boston
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Other flights to San Antonio
Explore flights to San Antonio departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on July 2, 2026.
Top 6 airlines flying from Boston to San Antonio
Discover the top 6 airlines that operate flights from Boston to San Antonio. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 2, 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$230 | Average$418 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$251 | Average$418 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$275 | Average$453 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$302 | Average$409 | FlexibilityNo cancel fee | On-time69% |