$103+ 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 5/21. Fares are subject to change and may not be available on all flights or dates of travel.
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 September or August, booked 83 days in advance, depart on a Tuesday or Friday and return on a Saturday
Cheap 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 17, 2025.
Most accurate provider | Mytrip 3 stars |
|---|---|
Most trusted provider | Mytrip 3 stars |
Round-trip from | $239 (Delta) |
One-way from | $103 (Cheapflightsfares) |
Popular in | December |
Cheapest in | September |
Average price | $396 |
Good round-trip deal | $265 or less |
Good one-way deal | $148 or less |
Find flight deals from Boston to San Antonio
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 17, 2025.
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 17, 2025.
This Delta deal was found by Cheapflights users on 4/16. 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.
This Mytrip deal was found by Cheapflights users on 4/16. 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.
This FlightHub deal was found by Cheapflights users on 4/16. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Southwest deal was found by Cheapflights users on 4/16. 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.
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This American Airlines deal was found by Cheapflights users on 4/16. 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.
This United Airlines deal was found by Cheapflights users on 4/16. 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.
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 17, 2025.
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
Price
BostonSan Antonio
BOS - SAT
BOSSAT
Boston Logan Intl
Wed 6/11
9:15 am-12:43 pm
Nonstop4h 28m
San Antonio
Sat 6/14
2:41 pm-8:00 pm
Nonstop4h 19m
BostonSan Antonio
BOS - SAT
BOSSAT
Boston Logan Intl
Wed 4/30
4:20 pm-4:08 pm
1 stop24h 48m
San Antonio
Sun 5/4
6:31 pm-12:45 am
2 stops29h 14m
BostonSan Antonio
BOS - SAT
BOSSAT
Boston Logan Intl
Sat 5/3
2:09 pm-8:01 pm
1 stop6h 52m
San Antonio
Fri 5/9
8:31 pm-12:44 am
1 stop27h 13m
BostonSan Antonio
BOS - SAT
BOSSAT
Boston Logan Intl
Tue 6/17
5:00 am-9:45 am
1 stop5h 45m
San Antonio
Fri 6/20
5:30 pm-12:05 am
1 stop5h 35m
BostonSan Antonio
BOS - SAT
BOSSAT
Boston Logan Intl
Fri 5/2
6:00 am-7:31 pm
1 stop14h 31m
San Antonio
Mon 5/5
8:31 pm-12:44 am
1 stop27h 13m
BostonSan Antonio
BOS - SAT
BOSSAT
Boston Logan Intl
Fri 6/27
5:00 am-12:34 pm
1 stop8h 34m
San Antonio
Tue 7/1
3:50 pm-10:47 pm
1 stop5h 57m
BostonSan Antonio
BOS - SAT
BOSSAT
Boston Logan Intl
Sat 5/17
12:30 pm-9:15 pm
2 stops9h 45m
San Antonio
Mon 5/19
2:25 pm-9:21 pm
1 stop5h 56m
BostonSan Antonio
BOS - SAT
BOSSAT
Boston Logan Intl
Wed 5/21
3:49 pm-10:51 pm
1 stop8h 02m
BostonSan Antonio
BOS - SAT
BOSSAT
Boston Logan Intl
Sat 5/17
8:00 am-9:52 am
1 stop26h 52m
BostonSan Antonio
BOS - SAT
BOSSAT
Boston Logan Intl
Fri 5/30
6:09 pm-11:58 pm
1 stop6h 49m
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*2 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*2 stars | |
| Price Accuracy3 stars | Trust Score*2 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 Mytrip to be most consistent on Cheapflights vs. Mytrip Users can find the same prices on Boston-San Antonio flight deals on Cheapflights vs. Mytrip >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 Mytrip the most. Mytrip 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.
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?
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 11, 2025.
The best time to book flights from Boston to San Antonio is 82 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, August is the cheapest month in which you can book a flight from Boston to San Antonio (average of $295). Flying from Boston to San Antonio in March is currently the most expensive (average of $376). 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 17, 2025.
When flying from Boston to San Antonio, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 24% versus a flight in the evening.
What is the cheapest day to fly from Boston to San Antonio?
Use this chart to determine the cheapest time to fly round-trip from Boston to San Antonio. Price data was last updated on March 30, 2025.
Travelers seeking maximum savings on their Boston to San Antonio flight should consider departing on Tuesday evenings when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
Rainfall in San Antonio by month
Plan your trip to San Antonio by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in San Antonio ranges from 1.6 - 3.7 inches per month. May is typically the wettest month, when rainfall can reach 3.7 in. December is typically the driest time to visit San Antonio when rainfall is around 1.6 in.
Temperature in San Antonio by month
Plan your trip to San Antonio by taking into account the average temperature totals by month.
If weather is an important factor for your trip to San Antonio, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).
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 17, 2025.
See what other customers who have flown with Alaska Airlines, Southwest and Delta from Boston to San Antonio have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Food
Comfort
Entertainment
Boarding
Overall
Crew
Reviews
Anonymous,Apr 2025
LAS - STS
Food
Comfort
Entertainment
Boarding
Overall
Crew
Reviews
Anonymous,Apr 2025
LAS - STS
Food
Comfort
Entertainment
Boarding
Overall
Crew
Reviews
Anonymous,Apr 2025
LAS - STS
Food
Comfort
Entertainment
Boarding
Overall
Crew
Reviews
Anonymous,Apr 2025
LAS - STS
Food
Comfort
Entertainment
Boarding
Overall
Crew
Reviews
Anonymous,Apr 2025
LAS - STS
Food
Comfort
Entertainment
Boarding
Overall
Crew
Reviews
Anonymous,Apr 2025
LAS - STS
Related info for your journey
Find useful and relevant information for your journey from Boston to San Antonio. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Boston to San Antonio
See prices for flight routes from nearby airports that may be better suited for you.
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 April 17, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$137 | Average$239 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$200 | Average$341 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$206 | Average$369 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$215 | Average$318 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$239 | Average$377 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$257 | Average$433 | FlexibilityNo cancel fee | On-time63% |