BOS - SAT

$101 Find Cheap Flights from Boston to San Antonio

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boston to San Antonio departing on 5/6. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to San Antonio

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to San Antonio.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to San Antonio.
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Everything you should know

Cheapest round-trip
$274
Typical prices: $509-$301
Southwest
Tue 8/18Thu 8/20
BOS - SAT • 2 stops
Cheapest non-stop
$299
Typical prices: $398-$258
Delta
Wed 7/1Wed 7/22
BOS - SAT • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
JetBlue offers free Wi-Fi and live TV for entertainment.
Use the FlyLogan app for updates and dining at BOS.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Cheapest • from $274 (round-trip)
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
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Airline reviews
Airline reviews
+1
Nonstop flights
You can fly direct with Delta. Average duration is 4h 40m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Top layover airports
Cheapest • Avg $280 (round-trip)
Shortest trip • 6h 10m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 5 weeks in advance save around 49% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 16% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
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+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to San Antonio!
Flight Deals
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Flight Deals

Cheap Flights from Boston to San Antonio (BOS-SAT)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Boston to San Antonio that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Boston to San Antonio

Tue, Aug 18 - Thu, Aug 20
Southwest Logo
8:15 am - 3:40 pm
BOS
-
SAT
8h 25m
2 stops
Southwest Logo
7:25 am - 5:05 pm
SAT
-
BOS
8h 40m
1 stop
$274Southwest
Wed, May 13 - Tue, May 19
Southwest Logo
11:40 am - 9:40 pm
BOS
-
SAT
11h 00m
1 stop
Southwest Logo
3:50 pm - 10:20 pm
SAT
-
BOS
5h 30m
1 stop
$277Southwest
Wed, Jun 3 - Sat, Jun 6
Southwest Logo
5:45 am - 5:20 pm
BOS
-
SAT
12h 35m
2 stops
Southwest Logo
4:40 pm - 11:15 pm
SAT
-
BOS
5h 35m
1 stop
$279Southwest
Wed, May 13 - Tue, May 19
Southwest Logo
5:45 am - 5:20 pm
BOS
-
SAT
12h 35m
2 stops
Southwest Logo
3:45 pm - 10:40 pm
SAT
-
BOS
5h 55m
1 stop
$283Southwest
Wed, May 6 - Thu, May 7
Multiple Airlines Logo
9:34 am - 8:15 am
BOS
-
SAT
23h 41m
1 stop
Multiple Airlines Logo
7:54 pm - 9:12 am
SAT
-
BOS
36h 18m
2 stops
$295Multiple Airlines
Tue, Jun 2 - Sat, Jun 6
Southwest Logo
6:20 am - 12:50 pm
BOS
-
SAT
7h 30m
1 stop
Southwest Logo
7:15 am - 4:20 pm
SAT
-
BOS
8h 05m
1 stop
$298Southwest
Wed, Jul 1 - Wed, Jul 22
Delta Logo
9:00 am - 12:25 pm
BOS
-
SAT
4h 25mnonstop
Delta Logo
1:20 pm - 6:47 pm
SAT
-
BOS
4h 27mnonstop
$299Delta
Tue, May 12 - Tue, May 19
Southwest Logo
5:35 am - 11:55 am
BOS
-
SAT
7h 20m
1 stop
Southwest Logo
3:45 pm - 10:40 pm
SAT
-
BOS
5h 55m
1 stop
$302Southwest
Tue, Jun 2 - Sat, Jun 6
Southwest Logo
2:25 pm - 9:45 pm
BOS
-
SAT
8h 20m
2 stops
Southwest Logo
7:15 am - 4:20 pm
SAT
-
BOS
8h 05m
1 stop
$303Southwest
Tue, May 12 - Tue, May 19
Southwest Logo
7:35 am - 3:10 pm
BOS
-
SAT
8h 35m
2 stops
Southwest Logo
3:45 pm - 10:40 pm
SAT
-
BOS
5h 55m
1 stop
$307Southwest
Booking Insights

KAYAK's insights & trends for Boston to San Antonio flights

Get data-powered insights and trends into flights from Boston to San Antonio to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Boston to San Antonio?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Boston to San Antonio departing in August.

What’s the cheapest day of the week to fly from Boston to San Antonio?

The average price of all round-trip flights from Boston to San Antonio clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Boston to San Antonio, look for departures on Tuesdays and avoid leaving on a Monday, as it's usually the priciest day. When flying back from San Antonio, Saturday is the cheapest day to fly and Sunday is the most expensive.

What is the cheapest month to fly from Boston to San Antonio?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Boston to San Antonio, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Boston to San Antonio is July, where tickets cost $338 (return) on average. On the other hand, the most expensive months are April and October, where the average cost of round-trip tickets is $477 and $458 respectively.

Can I save money by flying with a layover from Boston to San Antonio?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 2 stops layover the cheapest option at $339 on average.

How far in advance should I book a flight from Boston to San Antonio?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Boston to San Antonio, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Boston to San Antonio, you should book around 5 weeks before departure, which saves you about 49% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 18 weeks before departure.

Expert advice

Expert advice for your flight from Boston to San Antonio

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on Delta

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Harriet Baskas

Harriet Baskas

Expert on JetBlue

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Brandon Schultz

Brandon Schultz

Expert on SAT

Brandon Schultz is an award-winning food and travel writer based in New York City. His work has appeared in Forbes, AAA, Thrillist, Travel + Leisure, and The Daily Meal, among many others, and he is the author of 6 books, including 3 cookbooks.

Blane Bachelor

Blane Bachelor

Expert on BOS

Blane Bachelor is a journalist and editor specializing in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favorite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history. She will always choose the window seat.

Good to know

Low seasonFebruary
Cheapest flight$101
Best time to beat the crowds with an average 2% drop in price.
Most popular time to fly with an average 2% increase in price.
Flight from Boston to San Antonio

When to book flights from Boston to San Antonio

Are your dates flexible? Find out the best times to travel from Boston to San Antonio based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Boston to San Antonio

  • How can I get to BOS from downtown Boston?

    You can get to BOS from the city center by train, bus, or taxi. The cheapest and easiest way is through the T, which can help you reach BOS. Most people don't like being on public transportation due to some inconveniences, and that's where you can hire a taxi to get you to BOS within about 30min.

  • Is there a kid's play area at BOS?

    Yes, BOS has various kid's play areas where you can leave your kids to have fun as you clear with the airport desks. The kids' spaces are located at terminal B kid port, past security at gate 30 to B36. The other kids' play section can be found in the retail corridor near entrances B15 to B16. These areas are safe spaces for kids to play, and they are located near the washrooms and concessions.

  • Where can I unwind at SAT after a flight to San Antonio?

    There are several airport lounges at SAT where you can relax and grab a drink. Some lounges include the United Club located in terminal B between gates B3 and B5. The USO lounge is located at terminal B around the Baggage Claim area. And, another Delta Sky Club is situated in terminal 4, concourse B near gate 31.

  • Where can I inquire about anything at SAT?

    Information desks are located in various terminals at SAT, where you can inquire about any information. The information areas are found in the baggage claim area and the ticketing area at all the terminals. Also, there is personnel in blue uniforms which can assist you with any question you may need clarification.

  • What is the cheapest flight from Boston to San Antonio?

    In the last 3 days, the lowest price for a flight from Boston to San Antonio was $101 for a one-way ticket and $274 for a round-trip.

  • Do I need a passport to fly between Boston and San Antonio?

    No, a passport isn't needed to fly from Boston to San Antonio. However, local authorities might ask for an official ID.

  • Which airlines offer Wi-Fi service onboard planes from Boston to San Antonio?

    Delta, JetBlue, and Hawaiian Airlines offer inflight Wi-Fi service on the Boston to San Antonio flight route.

  • Which aircraft models fly most regularly from Boston to San Antonio?

    The Airbus A319 is the aircraft model that flies most regularly on the Boston to San Antonio flight route.

  • Which airline alliances offer flights from Boston to San Antonio?

    Star Alliance, oneworld, and SkyTeam are the airline alliances operating flights between Boston and San Antonio, with Star Alliance being the most commonly used for this route.

  • On which days can I fly direct from Boston to San Antonio?

    There are nonstop flights from Boston to San Antonio on a daily basis.

  • Which is the best airline for flights from Boston to San Antonio, Southwest or Delta?

    The two airlines most popular with KAYAK users for flights from Boston to San Antonio are Southwest and Delta. With an average price for the route of $390 and an overall rating of 8.0, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $443 and an overall rating of 7.9.

  • How does KAYAK find such low prices on flights from Boston to San Antonio?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Boston to San Antonio.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Boston to San Antonio?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Antonio from Boston is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Boston to San Antonio?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Antonio with an airline and back to Boston with another airline. Booking your flights between Boston and SAT can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Boston to San Antonio?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Antonio from Boston up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Boston to San Antonio

  • Looking for a cheap flight? 25% of our users found flights on this route for $208 or less one-way and $431 or less round-trip.
  • When going for an extended trip to San Antonio, you don't have to worry about the safety of your vehicle as there are long-term parking options at Boston Logan International Airport (BOS). The long-term parking spots are located at the central parking garage, Terminal B garage, Terminal E, and Economy parking.
  • You are recommended to be at the airport 3h before departure to have enough time to pass through all the required checkpoints without rushing.
  • If you wish to travel with your pets or any other animal, you should contact the airline you will use and inquire about their pet guidelines. Also, BOS has eight pet relief areas located at the Arrival level outside every terminal. The other two can be found outside terminal B. The post-security relief areas are situated in terminals B, C, and E.
  • When you require assistance accessing the airport, you should contact the airline you are traveling with and notify them of your needs 48h before your flight. Informing them allows them to make arrangements for how you will be picked up once you land at San Antonio International Airport (SAT).
  • If the queues are long at SAT, you can distract your mind by streaming movies and music by connecting to the free Wi-Fi. If you wish to continue with your work at the airport, you can also connect your laptop because Wi-Fi is available in all terminals.

Prefer to fly direct from Boston to San Antonio?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Boston Logan Intl to San Antonio.
Find which airlines fly direct from Boston Logan Intl Airport to San Antonio Airport, which days they fly and book direct flights.

Direct departures

Boston Logan Intl to San Antonio

Monday

Delta

Delta

Tuesday

Delta

Delta

Wednesday

Delta

Delta

Thursday

Delta

Delta

Friday

Delta

Delta

Saturday

Delta

Delta

Sunday

Delta

Delta

See more direct flights

Direct returns

San Antonio to Boston Logan Intl

Monday

Delta

Delta

Tuesday

Delta

Delta

Wednesday

Delta

Delta

Thursday

Delta

Delta

Friday

Delta

Delta

Saturday

Delta

Delta

Sunday

Delta

Delta

See more direct flights

Reviews of the top 5 airlines serving from Boston to San Antonio

 
See real verified KAYAK customer reviews for airlines flying from Boston to San Antonio. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Boston to San Antonio? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4327 reviews
7.0Food
7.5Entertainment
8.1Boarding
8.0Comfort
8.6Crew
Airline reviews

Southwest is kind of a slum airline. It’s gotten more expensive over the years for less and less service. I am a Southwest Chase Visa card holder and was forced to choose a seat in the 26th row in the middle seat. However my wife who is a rewards member but doesn’t hold a card or anything else, gets randomly assigned a normally paid seat in row 6! How does that work?

4.0 OkayDavid, Apr 2026
COS - DAL
Read more Southwest reviews

Southwest is kind of a slum airline. It’s gotten more expensive over the years for less and less service. I am a Southwest Chase Visa card holder and was forced to choose a seat in the 26th row in the middle seat. However my wife who is a rewards member but doesn’t hold a card or anything else, gets randomly assigned a normally paid seat in row 6! How does that work?

The seat was not comfortable. 1D. My back was sore all night and the next day.

One of the best airlines for fast boarding, on time arrivals, and top notch service!

I elected to pay for the upgrades and found very little difference

The new seating arrangement is so over priced for what you get.

WiFi was not working and didn’t have a beverage service

Snacks are always pretzels. Why can't you also offer peanuts ?

Flight was hours late, unable to sit next to spouse, I have had so much better experiences. Substantially better, only saving grace was that it was a short flight.

An entire day of delays. Cost lots of money. Meals and a hotel.

Only downside was the legroom and seat width, which is always a problem unless I spend more for a premium seat.

This wasn't my experience with Delta. It was just the Pegasus flight. Seats were very hard. Staff was kinda rough. Not very nice. Charged me for snacks. For a 4 hour flight I would've expected more.

The baggage belt was not updated on the Delta App and was displayed on the wrong belt board. Was not expecting this to happen.

The plan was delayed and left DC 90 minutes late. However, it showed a 20 minute delay on the delta app, then a 12 min delay. It turned out to be an hour delay. I found out where the plane was with flightaware. Stop keeping customers in the dark about what is going on.

Pilots lied about waiting on “paperwork”. Sat in the plane for over an hour, waiting on some papers to be printed according to the pilot and then all of a sudden he says good news maintenance is finally on their way. Maybe they can fix it before we get our paperwork. Ended up missing my connection in LaGuardia and as a result, had a fly home to Lexington instead of the Louisville airport. Then paid $100 to uber to Louisville since it was midnight by the time I got in. I wish they would just be transparent with passengers sometimes and not try to beat around the bush on why things are delayed.

One of the flight attendants was a little cranky. I appreciated the free wifi and plug to charge my laptop

The flight was smooth, the crew was great but the plane was quite old

The flight was delayed 90 minutes The Gate was wrong The Restroom on Aircraft was not clean There was a half used water bottle in my seat

Smaller plane for a longer flight than my first one. Doesn’t make sense.

Another late night flight and MORE men belligerently drinking and yelling. I had to move from first to economy because they were so obnoxious and disruptive. Crazy to go from a cozy chair to cardboard when you were supposed to be in first. Delta allows was too much drinking which leads to belligerent behavior.

Cabin was not pressurized properly. Several passengers had respiratory difficulties.

Overall flight was ok. Flight attendant was receptive to assisting passengers with tight connections.

This was the first flight in the morning. We boarded fine. The cabin door was closed and we were ready to go. We were notified by the Captain that ATC issued and ground stop for 40 minutes. So, without even pushing back from the gate, we were already 40 minutes late. We actually were released to push-back and taxi at 30 minutes. But, some passengers had tight connections and were not going to make their connections. Some passengers asked about the delay and the effect on the connections and were told by the cabin attendant that all flights will be delayed and so they should be OK. However, that was not true. My connecting flight was on time and I arrived at IAH with 21 minutes to make my connection. I did and I'm happy about that, but the flight crew should not have given assurances to the passengers who might have missed their connections.

Boarding was again a "free for all". We were boarding group 4, and almost the entire plane was able to board before us. It's a shame that someone who follows the rules, gets the short end of the stick. Not fair.

Fine. The issues I had were associated with luggage being delayed from Turkey to Tanzania

We purchase first class seats for the first time for multiples of standard economy ticket. There was no access to the club lounge and no priority boarding. The meal and the service once on the plane were superior and the seat was nicer, but not worth the price difference. I will be happy to seat in economy and spend the difference on more travel.

It isvvery small flight. No leg room . No space to put my personal item at feet.

My flight was canceled a few hours before boarding. I was rebooked on Copa airlines and missed an important meeting .

Everything was on time and service on the flight was great!

The travel company that you have on your site did me so wrong. I don’t know how it happened, but they put my son‘s name on my plane ticket flying to Vietnam. Along with his birthday. They would not have let me fly from Fort Myers to Ho Chi Minh City. I don’t think that I can ever use your service again. I typed my information into the browser along with my passport number and four days before I’m leaving I have to quickly search another ticket to fly out here.

It’s always a great time flying with united airlines.

Got home at 3am after deboarding the plane. No compensation offered by American

Early departure meant on time arrival. Only real problem was free internet had issues, although chatting with the internet help desk (you can do this via aainflight.com) got the issue resolved.

Flights on time w/o delays. However, my baggage was damaged. Ground crew, throws baggage from plane to the baggage carrier, carelessly.

Business class was very good, one of my best flights

The staff and service on American Airlines were truly outstanding. I had requested wheelchair assistance for my mother due to her knee issues, and the team went above and beyond every step of the way—from boarding in Boston to our arrival in Chicago. Their care, professionalism, and attentiveness made the entire experience smooth and stress-free. I’m very grateful for the support they provided.

American flight was diverted and delayed but app didn’t show that information so I wasn’t able to change my connection until the last min.

The plane was very creaky and lots of ringing. Plane was dirty and dingy. I couldn't hear the captain's announcements from the flight deck. Not sure if it was the captain or the audio equipment, but good thing there wasn't an emergency where we needed clear instructions. The overhead compartments were clearly full, but the flight crew allowed people to stand in the back with their carry on luggage. Then after everyone boarded, they had to go to the front to gate check their luggage because there was no room for their bags and then they returned to their seats...such a waste of time when clearly the overhead compartments were full when they originally boarded.

Air condition was not working for long both after boarding and also after landing ; unbearably hot and suffocating

Human interaction. Thought there would be more service-even a smile would have been nice.

It was canceled at the last minute. While I was literally at the airport. Messed my entire trip up.

We were surprised to be charged $99 for a personal item. And of course everything offered on the flight was an additional charge. Other than that the pilot flew and landed the plane well and the attendants and fellow passengers were nice enough.

It was a full Spirit experience. Got to witness police officers having to deboard a passenger and cost us about an hour of delay. Front seat was spacious and better than expected.

Bad airline to travel with my flight was delayed for more than 3 hours they act like it’s normal

Not enough crew members so we had to wait for more to arrive and they could never give us updates timing. Not even water for free on board. Bare bones airplane- there wasn’t even a seat back pocket to put things into. Spirit is cheap for a reason but this was dismal

flight delayed because of poor staffing and organization - confusion from gate agents and flight attendant supervisors scheduling a missing flight attendant. flight delay 1 hr 30 min

My flight was delayed by over an hour and the turbulance was horrible.

The bag situation was confusing. I didn’t know I had to pay for Carry ons. The seats were uncomfortable and there was no entertainment

4 hour delay, 2 hours in the airport and then 2 hours on the tarmac. With a flight full of kids it would have been better to leave us in the airport for the delay, it was crying kids chaos on the flight. Miserable. And no apology or airline credit for the significant delay.

This flight cancelled. I am in the airport right now and my kids sleep on the floor. We are waiting for information in the line 4 hours and rude woman from spirit airline offers us flight to Austin on 23 February. No water no food offer. The offer to book hotel and they will refund 150$. The nearest hotel 450$ per night. So I got flight to San Antonio 02/22 at 7am. I hate this company, they are rude and no empathy. So many people with kids were there. And I don’t sleep and it is cold here. I don’t have warm clothes for me and my kids. And I don’t have money for transport from San Antonio to my Austin.

The flight was delayed over an hour which got us into DFW at approximately 2:20 am

Everything you need to know for your flight from Boston to San Antonio

Information on your arrival and departure airports