$120+ 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 5/7. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SAT
Apr 8 — Apr 151
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 June, booked 64 days in advance, depart on a Friday or Tuesday and return on a Thursday
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 March 9, 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 March 9, 2026.
This Mytrip deal was found by Cheapflights users on 3/8. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/225:49 pm
BOS
- SAT
1 stop16h 38m
Spirit Airlines
Tue 3/241:22 pm
SAT
- BOS
3 stops33h 37m
Spirit Airlines
Deal found 3/8![Spirit Airlines logo]()
$297
This CheapOair deal was found by Cheapflights users on 3/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/85:49 pm
BOS
- SAT
1 stop16h 38m
Spirit Airlines
Sun 4/1210:22 am
SAT
- BOS
1 stop28h 06m
Spirit Airlines
Deal found 3/4![Spirit Airlines logo]()
$298
This CheapOair deal was found by Cheapflights users on 3/5. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/285:45 am
BOS
- SAT
1 stop28h 42m
Spirit Airlines
Tue 3/311:22 pm
SAT
- BOS
2 stops25h 06m
Spirit Airlines
Deal found 3/5![Spirit Airlines logo]()
$299
This CheapOair deal was found by Cheapflights users on 3/7. 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.
Mon 3/235:49 pm
BOS
- SAT
1 stop16h 38m
Spirit Airlines
Wed 3/2510:22 am
SAT
- BOS
1 stop28h 06m
Spirit Airlines
Deal found 3/7![Spirit Airlines logo]()
$300
This CheapOair deal was found by Cheapflights users on 3/5. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/1411:16 am
BOS
- SAT
1 stop23h 08m
Frontier
Mon 5/1810:23 am
SAT
- BOS
1 stop22h 58m
Frontier
Deal found 3/5![Frontier logo]()
$301
This Kiwi.com deal was found by Cheapflights users on 3/6. 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.
Sat 3/285:49 pm
BOS
- SAT
1 stop16h 38m
Multiple Airlines
Sun 4/510:22 am
SAT
- BOS
2 stops38h 04m
Multiple Airlines
Deal found 3/6![Multiple Airlines logo]()
$302
This Kiwi.com deal was found by Cheapflights users on 3/4. 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 5/1312:55 pm
BOS
- SAT
2 stops11h 56m
Multiple Airlines
Sun 5/179:55 am
SAT
- BOS
1 stop24h 48m
Multiple Airlines
Deal found 3/4![Multiple Airlines logo]()
$303
This CheapOair deal was found by Cheapflights users on 3/8. 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.
Sun 4/125:45 am
BOS
- SAT
1 stop28h 42m
Spirit Airlines
Wed 4/152:12 pm
SAT
- BOS
2 stops19h 03m
Spirit Airlines
Deal found 3/8![Spirit Airlines logo]()
$304
This Kiwi.com deal was found by Cheapflights users on 3/6. 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.
Sun 3/295:45 am
BOS
- SAT
1 stop28h 42m
Multiple Airlines
Mon 4/66:00 pm
SAT
- BOS
2 stops42h 55m
Multiple Airlines
Deal found 3/6![Multiple Airlines logo]()
$305
This CheapOair deal was found by Cheapflights users on 3/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/264:23 pm
BOS
- SAT
1 stop21h 04m
Spirit Airlines
Mon 3/3010:22 am
SAT
- BOS
1 stop28h 06m
Spirit Airlines
Deal found 3/4![Spirit Airlines logo]()
$306
This Kiwi.com deal was found by Cheapflights users on 3/8. 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 4/135:49 pm
BOS
- SAT
1 stop16h 38m
Multiple Airlines
Thu 4/163:00 pm
SAT
- BOS
2 stops19h 47m
Multiple Airlines
Deal found 3/8![Multiple Airlines logo]()
$307
This CheapOair deal was found by Cheapflights users on 3/6. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/1511:20 am
BOS
- SAT
1 stop13h 31m
Spirit Airlines
Fri 4/172:12 pm
SAT
- BOS
2 stops19h 03m
Spirit Airlines
Deal found 3/6![Spirit Airlines logo]()
$308
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 March 9, 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 March 9, 2026.
This Delta deal was found by Cheapflights users on 3/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/38:30 am
BOS
- SAT
Nonstop4h 40m
Delta
Sun 6/72:00 pm
SAT
- BOS
1 stop8h 52m
Delta
Deal found 3/4![Delta logo]()
$329
This Southwest deal was found by Cheapflights users on 3/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/37:15 am
BOS
- SAT
2 stops8h 10m
Southwest
Fri 4/103:05 pm
SAT
- BOS
2 stops7h 10m
Southwest
Deal found 3/4![Southwest logo]()
$378
This United Airlines deal was found by Cheapflights users on 3/4. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/54:35 pm
BOS
- SAT
1 stop7h 19m
United Airlines
Wed 5/612:20 pm
SAT
- BOS
1 stop6h 34m
United Airlines
Deal found 3/4![United Airlines logo]()
$417
This Delta deal was found by Cheapflights users on 3/8. 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 6/129:15 am
BOS
- SAT
Nonstop4h 37m
Delta
Mon 6/156:05 pm
SAT
- BOS
1 stop11h 04m
Delta
Deal found 3/8![Delta logo]()
$329
This Delta deal was found by Cheapflights users on 3/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/208:30 am
BOS
- SAT
Nonstop4h 40m
Delta
Wed 5/275:00 pm
SAT
- BOS
1 stop7h 28m
Delta
Deal found 3/4![Delta logo]()
$329
This Southwest deal was found by Cheapflights users on 3/7. 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 6/137:10 pm
BOS
- SAT
1 stop6h 00m
Southwest
Mon 6/153:45 pm
SAT
- BOS
2 stops7h 20m
Southwest
Deal found 3/7![Southwest logo]()
$393
This Delta deal was found by Cheapflights users on 3/6. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/175:30 am
BOS
- SAT
1 stop6h 41m
Delta
Sat 6/202:00 pm
SAT
- BOS
Nonstop4h 15m
Delta
Deal found 3/6![Delta logo]()
$329
This United Airlines deal was found by Cheapflights users on 3/8. 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 5/92:22 pm
BOS
- SAT
1 stop7h 13m
United Airlines
Tue 5/126:49 am
SAT
- BOS
1 stop8h 27m
United Airlines
Deal found 3/8![United Airlines logo]()
$424
This Delta deal was found by Cheapflights users on 3/8. 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 6/305:40 am
BOS
- SAT
1 stop7h 25m
Delta
Mon 7/62:51 pm
SAT
- BOS
1 stop6h 56m
Delta
Deal found 3/8![Delta logo]()
$339
This Delta deal was found by Cheapflights users on 3/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/148:30 am
BOS
- SAT
Nonstop4h 40m
Delta
Tue 5/191:05 pm
SAT
- BOS
Nonstop4h 19m
Delta
Deal found 3/4![Delta logo]()
$368
Last-minute flights from Boston to San AntonioDiscover last-minute flight deals from Boston to San Antonio. Data last updated March 9, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to San Antonio. Data last updated March 9, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 3/8. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/225:49 pm
BOS
- SAT
1 stop16h 38m
Spirit Airlines
Tue 3/241:22 pm
SAT
- BOS
3 stops33h 37m
Spirit Airlines
Deal found 3/8![Spirit Airlines logo]()
$297
This CheapOair deal was found by Cheapflights users on 3/7. 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.
Mon 3/235:49 pm
BOS
- SAT
1 stop16h 38m
Spirit Airlines
Wed 3/2510:22 am
SAT
- BOS
1 stop28h 06m
Spirit Airlines
Deal found 3/7![Spirit Airlines logo]()
$300
This CheapOair deal was found by Cheapflights users on 3/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/264:23 pm
BOS
- SAT
1 stop21h 04m
Spirit Airlines
Mon 3/3010:22 am
SAT
- BOS
1 stop28h 06m
Spirit Airlines
Deal found 3/4![Spirit Airlines logo]()
$306
This CheapOair deal was found by Cheapflights users on 3/5. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/285:45 am
BOS
- SAT
1 stop28h 42m
Spirit Airlines
Tue 3/311:22 pm
SAT
- BOS
2 stops25h 06m
Spirit Airlines
Deal found 3/5![Spirit Airlines logo]()
$299
This Kiwi.com deal was found by Cheapflights users on 3/6. 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.
Sat 3/285:49 pm
BOS
- SAT
1 stop16h 38m
Multiple Airlines
Sun 4/510:22 am
SAT
- BOS
2 stops38h 04m
Multiple Airlines
Deal found 3/6![Multiple Airlines logo]()
$302
This CheapOair deal was found by Cheapflights users on 3/7. 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.
Sat 3/285:49 pm
BOS
- SAT
1 stop16h 38m
Spirit Airlines
Mon 3/301:22 pm
SAT
- BOS
2 stops33h 37m
Spirit Airlines
Deal found 3/7![Spirit Airlines logo]()
$309
This Kiwi.com deal was found by Cheapflights users on 3/6. 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.
Sun 3/295:45 am
BOS
- SAT
1 stop28h 42m
Multiple Airlines
Mon 4/66:00 pm
SAT
- BOS
2 stops42h 55m
Multiple Airlines
Deal found 3/6![Multiple Airlines logo]()
$305
This CheapOair deal was found by Cheapflights users on 3/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/85:49 pm
BOS
- SAT
1 stop16h 38m
Spirit Airlines
Sun 4/1210:22 am
SAT
- BOS
1 stop28h 06m
Spirit Airlines
Deal found 3/4![Spirit Airlines logo]()
$298
This CheapOair deal was found by Cheapflights users on 3/8. 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.
Sun 4/125:45 am
BOS
- SAT
1 stop28h 42m
Spirit Airlines
Wed 4/152:12 pm
SAT
- BOS
2 stops19h 03m
Spirit Airlines
Deal found 3/8![Spirit Airlines logo]()
$304
This Kiwi.com deal was found by Cheapflights users on 3/8. 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 4/135:49 pm
BOS
- SAT
1 stop16h 38m
Multiple Airlines
Thu 4/163:00 pm
SAT
- BOS
2 stops19h 47m
Multiple Airlines
Deal found 3/8![Multiple Airlines logo]()
$307
This Kiwi.com deal was found by Cheapflights users on 3/5. 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.
Wed 4/156:00 am
BOS
- SAT
2 stops33h 15m
Multiple Airlines
Mon 4/206:00 am
SAT
- BOS
1 stop27h 15m
Multiple Airlines
Deal found 3/5![Multiple Airlines logo]()
$301
This CheapOair deal was found by Cheapflights users on 3/6. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/1511:20 am
BOS
- SAT
1 stop13h 31m
Spirit Airlines
Fri 4/172:12 pm
SAT
- BOS
2 stops19h 03m
Spirit Airlines
Deal found 3/6![Spirit Airlines logo]()
$308
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 March 9, 2026.
Search for one-way flight options from Boston to San Antonio. Find affordable one-way fares based on user searches. Data last updated March 9, 2026.
This Super.com deal was found by Cheapflights users on 3/8. 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 5/711:16 am
BOS
- SAT
1 stop23h 08m
Frontier
Deal found 3/8![Frontier logo]()
$120
This Trip.com deal was found by Cheapflights users on 3/5. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/55:45 am
BOS
- SAT
1 stop28h 42m
Spirit Airlines
Deal found 3/5![Spirit Airlines logo]()
$122
This Mytrip deal was found by Cheapflights users on 3/5. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/45:49 pm
BOS
- SAT
1 stop16h 38m
Spirit Airlines
Deal found 3/5![Spirit Airlines logo]()
$123
This Kiwi.com deal was found by Cheapflights users on 3/6. 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.
Tue 5/512:55 pm
BOS
- SAT
2 stops26h 24m
Frontier
Deal found 3/6![Frontier logo]()
$124
This Kiwi.com deal was found by Cheapflights users on 3/5. 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.
Tue 5/511:16 am
BOS
- SAT
1 stop27h 01m
Multiple Airlines
Deal found 3/5![Multiple Airlines logo]()
$125
This Kiwi.com deal was found by Cheapflights users on 3/5. 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.
Tue 3/2412:36 pm
BOS
- SAT
2 stops36h 41m
Frontier
Deal found 3/5![Frontier logo]()
$127
This Kiwi.com deal was found by Cheapflights users on 3/5. 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 6/610:12 am
BOS
- SAT
1 stop24h 03m
Multiple Airlines
Deal found 3/5![Multiple Airlines logo]()
$128
This Kiwi.com deal was found by Cheapflights users on 3/6. 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 4/85:49 pm
BOS
- SAT
1 stop16h 38m
Spirit Airlines
Deal found 3/6![Spirit Airlines logo]()
$129
This Kiwi.com deal was found by Cheapflights users on 3/5. 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.
Tue 5/1911:16 am
BOS
- SAT
1 stop27h 01m
Multiple Airlines
Deal found 3/5![Multiple Airlines logo]()
$134
This Kiwi.com deal was found by Cheapflights users on 3/5. 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.
Wed 5/65:55 am
BOS
- SAT
1 stop18h 56m
Spirit Airlines
Deal found 3/5![Spirit Airlines logo]()
$135
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 March 9, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $297 (CheapOair) |
One-way from | $120 (Super.com) |
Popular in | October |
Cheapest in | July |
Average price | $438 |
Good round-trip deal | $384 or less |
Good one-way deal | $223 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 March 9, 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 6/3
8:30 am-12:10 pm
Nonstop4h 40m
San Antonio
Sun 6/7
2:00 pm-11:52 pm
1 stop8h 52m
$329
BostonSan Antonio
BOS - SAT
BOSSAT
Boston Logan Intl
Fri 6/12
9:15 am-12:52 pm
Nonstop4h 37m
San Antonio
Mon 6/15
6:05 pm-6:09 am
1 stop11h 04m
$329
BostonSan Antonio
BOS - SAT
BOSSAT
Boston Logan Intl
Wed 5/20
8:30 am-12:10 pm
Nonstop4h 40m
San Antonio
Wed 5/27
5:00 pm-1:28 am
1 stop7h 28m
$329
BostonSan Antonio
BOS - SAT
BOSSAT
Boston Logan Intl
Wed 6/17
5:30 am-11:11 am
1 stop6h 41m
San Antonio
Sat 6/20
2:00 pm-7:15 pm
Nonstop4h 15m
$329
BostonSan Antonio
BOS - SAT
BOSSAT
Boston Logan Intl
Tue 6/30
5:40 am-12:05 pm
1 stop7h 25m
San Antonio
Mon 7/6
2:51 pm-10:47 pm
1 stop6h 56m
$339
Quickest round-trip
BostonSan Antonio
BOS - SAT
BOSSAT
Boston Logan Intl
Thu 5/14
8:30 am-12:10 pm
Nonstop4h 40m
San Antonio
Tue 5/19
1:05 pm-6:24 pm
Nonstop4h 19m
$368
BostonSan Antonio
BOS - SAT
BOSSAT
Boston Logan Intl
Fri 4/3
7:15 am-2:25 pm
2 stops8h 10m
San Antonio
Fri 4/10
3:05 pm-11:15 pm
2 stops7h 10m
$378
BostonSan Antonio
BOS - SAT
BOSSAT
Boston Logan Intl
Sat 6/13
7:10 pm-12:10 am
1 stop6h 00m
San Antonio
Mon 6/15
3:45 pm-12:05 am
2 stops7h 20m
$393
BostonSan Antonio
BOS - SAT
BOSSAT
Boston Logan Intl
Tue 5/5
4:35 pm-10:54 pm
1 stop7h 19m
San Antonio
Wed 5/6
12:20 pm-7:54 pm
1 stop6h 34m
$417
BostonSan Antonio
BOS - SAT
BOSSAT
Boston Logan Intl
Sat 5/9
2:22 pm-8:35 pm
1 stop7h 13m
San Antonio
Tue 5/12
6:49 am-4:16 pm
1 stop8h 27m
$424
Showing 1-10 of 20 resultsSorted by cheapest first
Compare providers for flights from Boston to San Antonio
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Boston to San Antonio in March.
| 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 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
Prices
More
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 March 6, 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, April is the cheapest month in which you can book a flight from Boston to San Antonio (average of $121). Flying from Boston to San Antonio in May is currently the most expensive (average of $210). 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 March 9, 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 March 9, 2026.
Peruse reviews from past customers who have flown with Southwest, Delta, and United 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
Overall
8.0
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Food
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Crew
8.6
Overall
8.0
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Food
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Crew
8.6
Overall
8.0
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Food
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Crew
8.6
Overall
8.0
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Food
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Crew
8.6
Overall
8.0
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Food
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Crew
8.6
Overall
8.0
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Food
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
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 March 9, 2026.
Other flights from Boston
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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 March 9, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$102 | Average$286 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$169 | Average$238 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$227 | Average$227 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$235 | Average$397 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$239 | Average$396 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$258 | Average$401 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$258 | Average$364 | FlexibilityNo cancel fee | On-time71% |