Portsmouth
Portsmouth
San Antonio
San Antonio
Flight

Portsmouth to San Antonio

Updated: 28 May 2026

The distance from Portsmouth to San Antonio is approximately 1,900 miles. Flying is the only practical mode of transport for this long-distance journey. You will typically take a bus to Boston Logan Airport and then fly directly to San Antonio International Airport. The total travel time is about 7 to 8 hours. San Antonio is a major cultural and economic center in Texas.

Total Distance: 3,000 km driving, 2,600 km air distance.
Fastest Way
Flight, taking 7 hours total.
Cheapest Way
Flight, if booked in advance.
Compare Portsmouth to San Antonio Routes
Flight
Connecting
Duration
7 hours (including airport time)
Avg Price
300-600 USD
Operator
American Airlines / United
Route
Bus to Boston Logan, flight to SAT.

San Antonio International is a major hub; allow plenty of time for security.

Travel Tips
  • Transit
    Use the VIA Metropolitan Transit system to get around the city; it is very efficient.
  • Tickets
    Book flights early to avoid high prices.
  • Arrival
    San Antonio International is large; allow extra time to navigate the terminals.
  • Walking
    San Antonio is spread out; you will likely need to use transit or rideshares.
  • Apps
    Use a transit app for real-time VIA updates.
Safety Tips
  • Awareness
    Stay alert in crowded tourist areas.
  • Transit Safety
    Follow all safety instructions on the VIA buses.
  • Night Travel
    Stick to well-lit areas when walking at night.
  • Emergency
    San Antonio has a robust emergency response system; dial 911.
People Also Ask
  • Is there a train to San Antonio?
    You could take a train from Boston, but it takes over 40 hours.
  • How long is the flight?
    The flight itself is about 4 hours, plus airport time.
  • Which airport is better?
    San Antonio International is the only major airport in San Antonio.
  • Is it a long trip?
    Yes, it is a significant distance across the country.
  • What is the best time to visit?
    Spring is popular, but it can be hot in the summer.
Quick Info
  • From Portsmouth, New Hampshire, United States
  • To San Antonio, Texas, United States
  • Modes
Best Time to Travel

Spring or Fall for mild weather.

Things to Do in San Antonio
1
The Alamo
Visit the historic mission and fortress. It is a must-see in San Antonio.
2
River Walk
Stroll along the famous river walk. It is a beautiful and popular destination.
3
San Antonio Missions
Explore the historic missions. It is a cultural landmark.
4
Tower of the Americas
Go to the observation deck for panoramic views of the city. It is a must-see.
Tags
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