BOS - SAT

$126 Find Cheap Flights from Boston to San Antonio - Compare and Save

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Everything you should know

Cheapest round-trip
$269
Typical prices: $351-$577
Delta
Fri 1/5Tue 1/9
BOS - SAT • Non-stop
Cheapest one-way
$126
Typical prices: $199-$398
Frontier
Mon 10/1
BOS - SAT • 1 stop
Nonstop flights
You can fly direct with Delta. Average duration is 4h 34m
Direct flights
+1
Direct flights
+1
When to book
in advance
Our data shows that travelers who book at least 25 weeks in advance save around 47% compared to booking last minute.
Insights
Insights
When to travel
Cheapest • 19% price drop
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Cheapest • Avg $200 (round-trip)
Shortest trip • 5h 50m (one-way)
Insights
Insights
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We hope you love your trip to San Antonio!
Flight Deals
Booking Insights
Expert advice
Flight Deals

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

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Boston to San Antonio

Tue, Jan 5 - Sat, Jan 9
Delta Logo
9:15 am - 1:08 pmBOS  Boston Logan Intl-SAT San Antonio
4h 53mnonstop
Delta Logo
2:00 pm - 7:06 pmSAT  San Antonio-BOS Boston Logan Intl
4h 06mnonstop
$269Delta
Thu, Oct 15 - Wed, Oct 21
Delta Logo
9:20 am - 12:52 pmBOS  Boston Logan Intl-SAT San Antonio
4h 32mnonstop
Delta Logo
1:50 pm - 7:14 pmSAT  San Antonio-BOS Boston Logan Intl
4h 24mnonstop
$269Delta
Thu, Oct 1 - Mon, Oct 5
Southwest Logo
4:50 pm - 12:05 amBOS  Boston Logan Intl-SAT San Antonio
8h 15m1 stop Chicago Midway
Southwest Logo
4:40 pm - 11:55 pmSAT  San Antonio-BOS Boston Logan Intl
6h 15m1 stop Nashville Intl
$277Southwest
Thu, Nov 5 - Tue, Nov 10
Southwest Logo
6:35 pm - 12:05 amBOS  Boston Logan Intl-SAT San Antonio
6h 30m1 stop Lambert-St Louis
Southwest Logo
5:30 am - 12:20 pmSAT  San Antonio-BOS Boston Logan Intl
5h 50m1 stop Baltimore/Washington
$277Southwest
Sat, Oct 24 - Wed, Oct 28
American Airlines Logo
2:54 pm - 10:56 pmBOS  Boston Logan Intl-SAT San Antonio
9h 02m1 stop Charlotte Douglas
American Airlines Logo
12:46 pm - 9:26 pmSAT  San Antonio-BOS Boston Logan Intl
7h 40m1 stop Dallas/Fort Worth
$289American Airlines
Tue, Dec 8 - Sat, Dec 12
American Airlines Logo
7:00 am - 2:49 pmBOS  Boston Logan Intl-SAT San Antonio
8h 49m1 stop Dallas/Fort Worth
American Airlines Logo
7:27 am - 3:59 pmSAT  San Antonio-BOS Boston Logan Intl
7h 32m1 stop Charlotte Douglas
$289American Airlines
Sat, Oct 24 - Mon, Oct 26
United Airlines Logo
10:36 am - 4:30 pmBOS  Boston Logan Intl-SAT San Antonio
6h 54m1 stop Chicago O'Hare Intl
United Airlines Logo
4:19 pm - 11:25 pmSAT  San Antonio-BOS Boston Logan Intl
6h 06m1 stop Houston George Bush Intcntl
$289United Airlines
Thu, Oct 1 - Sun, Oct 4
United Airlines Logo
5:38 pm - 10:51 pmBOS  Boston Logan Intl-SAT San Antonio
6h 13m1 stop Houston George Bush Intcntl
United Airlines Logo
6:00 am - 2:35 pmSAT  San Antonio-BOS Boston Logan Intl
7h 35m1 stop Newark
$289United Airlines
Sun, Sep 13 - Wed, Sep 16
Frontier Logo
11:53 am - 9:10 amBOS  Boston Logan Intl-SAT San Antonio
22h 17m1 stop Orlando
Frontier Logo
10:03 am - 10:22 amSAT  San Antonio-BOS Boston Logan Intl
23h 19m1 stop Orlando
$375Frontier
Thu, Oct 1 - Sat, Oct 10
Frontier Logo
11:17 am - 9:10 amBOS  Boston Logan Intl-SAT San Antonio
22h 53m1 stop Orlando
Frontier Logo
2:47 pm - 12:02 pmSAT  San Antonio-BOS Boston Logan Intl
20h 15m2 stops Las Vegas Harry Reid Intl Atlanta Hartsfield-Jackson
$574Frontier
Booking Insights

Price, demand and travel trends for Boston to San Antonio flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from Boston to San Antonio with more confidence.

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

Round-trip flights from Boston to San Antonio start at $269. Prices are below average for this route right now, with typical round-trip fares ranging from $351 to $577. The lowest price found in the past 5 days was $269 on Delta.

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

Saturday is the cheapest day of the week to fly from Boston to San Antonio, it is 5% cheaper than the average day. Monday is the most expensive day with flight prices 20% higher than average. Based on deals found by KAYAK users in the last 12 months.

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

  • August is the cheapest month to fly from Boston to San Antonio at $359 round-trip.
  • April ($485) and June ($478) are the most expensive months.
  • The price difference between flying in the cheapest and most expensive months is 35% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are prices from Boston to San Antonio the cheapest?

Flights from Boston to San Antonio are cheapest 25 weeks before departure. Booking in this window typically costs about 47% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Expert advice

Expert advice for your flight from Boston to San Antonio

 
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.

Key details for Boston to San Antonio flights

Low season

August

Cheapest flight

$126
Best time to beat the crowds with an average 19% drop in price.
Most popular time to fly with an average 10% 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

Your Boston to San Antonio flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • 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.

  • Which airlines offer extra legroom and free seat selection on Boston to San Antonio flights?

    Among airlines operating Boston to San Antonio flights:

    • Delta: offers extra legroom; offers free seat selection

    Extra legroom and free seat selection availability depends on fare class and route.

  • What airlines are available from Boston to San Antonio?

    Only Delta operates flights between Boston and San Antonio.

  • Which airports can I use when flying from Boston to San Antonio?

    Flights from Boston to San Antonio usually depart from Boston Logan Intl (BOS) and arrive at San Antonio (SAT).

  • Which airlines include bags at no extra cost on Boston to San Antonio flights?

    Here are some options for this route, based on selected ticket types and cabin classes:

    • Delta: a cabin bag and a checked bag in Economy Class

    Bag allowance can vary by ticket type, cabin class, route and airline, so travelers should check the fare details before booking.

  • What cabin classes can I book on flights from Boston to San Antonio?

    Two cabin classes are available on flights from Boston to San Antonio:

    • Economy Class
    • First Class

  • How much can I save by taking a layover when flying from Boston to San Antonio?

    On this route, layover flights are cheaper than nonstop options on average. Layover fares average $200 round-trip via Philadelphia (PHL), compared to $454 for nonstop.

  • What is the standard checked-bag allowance on flights from Boston to San Antonio?

    There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $35–$90 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

  • Which aircraft model is used most often on flights from Boston to San Antonio?

    The Airbus A220-300 family is used most often on this route, operated mainly by JetBlue and Delta. Other aircraft seen on the route include Airbus A220 variants.

  • Which airports do connecting flights from Boston to San Antonio pass through?

    One-stop flights from Boston to San Antonio most commonly connect through:

    • Atlanta Hartsfield-Jackson (ATL) - 18% of one-stop connections
    • Lambert-St Louis (STL) - 13% of one-stop connections
    • Houston George Bush Intcntl (IAH) - 12% of one-stop connections
    • Nashville Intl (BNA) - 10% of one-stop connections

    Atlanta Hartsfield-Jackson (ATL) handles the largest share of one-stop connections on this route.

  • Can I save money by using flexible dates for flights from Boston to San Antonio?

    On the Boston to San Antonio route, being flexible with your departure day can save you up to 21%. Saturday is the cheapest day at $423 round-trip on average, while Monday is the most expensive at $534: a $111 difference. Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

  • How are flight departures from Boston to San Antonio spread across the day?

    Morning is the busiest departure period on Boston to San Antonio flights, with 100% of flights leaving in that window. Afternoon departures account for 0%, evening flights for 0%, and night flights for 0%.

  • What popular places can I visit in San Antonio?

    Some of the most popular sights in San Antonio are San Antonio River Walk, SeaWorld San Antonio and Alamodome. These are among the most viewed places in San Antonio on KAYAK.

  • What are the earliest and latest flights from Boston to San Antonio?

    These are the earliest and latest flight times available from Boston to San Antonio:

    • Earliest: departs at 9:00 am and lands at 1:34 pm
    • Latest: departs at 9:55 am and lands at 2:29 pm.

    The flight takes about 4h 34m.

  • How expensive are last-minute Boston to San Antonio flights?

    Last-minute fares on this route - booked within 2 weeks of departure - run 60% above the route average of $442. Book 25 weeks before departure for the lowest fares.

  • How long is a flight from Boston to San Antonio?

    A nonstop flight from Boston to San Antonio takes 4h 34m, covering 1,761 miles.

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

    No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.

  • Have flight prices from Boston to San Antonio changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $269 to $2,568. That means the highest observed fare was about 10x higher than the lowest one.

  • How are flight prices from Boston to San Antonio looking right now?

    One-way fares from Boston to San Antonio are currently lower than usual. Average one-way flight prices are about $185, which is 30% below the typical average for this route.

  • How much time can I save by choosing a different layover airport from Boston to San Antonio?

    Flying via Lambert-St Louis (STL) gives the shortest average 1-stop total travel time at 5h 50m, compared with 6h 03m via Nashville Intl (BNA) and 6h 09m via Philadelphia (PHL).

  • What is the time difference between Boston and San Antonio?

    San Antonio is 1 hour behind Boston (Central Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.

  • What car rental options are available at San Antonio Airport (SAT)?

    San Antonio Airport (SAT) hosts 5 major car rental companies, with daily rates starting from around $22 for economy cars. Top options include:
    · Europcar
    · Fox
    · Dollar
    · Hertz
    · Alamo

  • How much should I expect to pay for a Boston to San Antonio flight?

    Round-trip flights from Boston to San Antonio range from $351 to $577, with an average of $442 over the past 12 months. Anything below $351 counts as a good deal.

  • Which airlines offer Wi-Fi on Boston to San Antonio flights?

    Delta is the only airline on the Boston to San Antonio route offering in-flight Wi-Fi. Pricing depends on fare class.

Your guide to booking Boston to San Antonio flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates can be flexible, aim for a Saturday departure instead of Monday. On this route, Saturday flights average $423 - about $111 less than Monday (21% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 25 weeks before you fly. On this route, that window historically saves about 47% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Boston to San Antonio trip for August. Fares historically average $359 round-trip in that month - typically $126 less than the most expensive month, which is April (based on the last 12 months).
  • If you have the time, taking a 1-stop flight through Philadelphia Airport (PHL) can be cheaper than flying direct. The cheapest layover option averages $200 round-trip on this route - about $253 less than direct flights (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to San Antonio Airport.
    - Wyndham Garden San Antonio Airport
    - Crowne Plaza San Antonio Airport By IHG
    - Heritage Inn & Suites San Antonio Airport, Trademark Wyndham
  • 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?

 
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

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

Information on your arrival and departure airports