Direct flights from Boston to San Antonio BOS → SAT
Delta Air Lines flies nonstop from Boston (BOS) to San Antonio (SAT), daily. The flight takes about 4h 8m and covers 1,762 miles (2,835 km). Round-trip fares typically run around $429, with recent bookable fares from $269. Arrivals run on time 75.4% at BOS and 75.6% at SAT — BTS data for the last three months, counting arrivals within 15 minutes of schedule. Fares last checked 30 August 2026.
60-day flexibility overview based on 78 recent fares across the next 60 days
What flexibility is worth here
Flying in January rather than September typically saves $315 on BOS → SAT.
Typical round-trip fare by departure month, across the 5 months we currently track.
How long you stay changes it too
Staying 10–16 nights typically costs $105 less than 6–9 nights.
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Departure Schedule typical week
Typical weekly schedule · 7 flights per week · Updated 51d ago
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Frequently asked questions
Is there a direct flight from Boston to San Antonio?
Yes, Delta Air Lines operates nonstop flights from Boston (BOS) to San Antonio (SAT).
Which airlines fly direct from Boston to San Antonio?
Delta Air Lines operates nonstop flights from Boston to San Antonio.
How long is the flight from Boston to San Antonio?
The nonstop flight from Boston to San Antonio takes ~4h 8m (approximately 2835 km).
How often do direct flights operate from Boston to San Antonio?
Nonstop flights from Boston to San Antonio operate daily — 7 flights per week.
What is the on-time performance for flights from Boston to San Antonio?
Arrivals run on time 75.4% at BOS and 75.6% at SAT — BTS data for the last three months, counting arrivals within 15 minutes of schedule.
What days of the week are there direct flights from Boston to San Antonio?
Direct flights from Boston to San Antonio operate every day of the week.
How much is a round-trip flight from Boston to San Antonio?
Round-trip flights from Boston (BOS) to San Antonio (SAT) start at $249, with a typical fare around $429. Based on 78 recent fare combinations.
What is the cheapest month to fly from Boston to San Antonio?
Across the 5 departure months we currently track, January 2027 is the cheapest month to fly round trip from Boston to San Antonio, with typical fares around $269 — versus about $584 in September 2026, the most expensive.
Does trip length change the round-trip fare from Boston to San Antonio?
Typical round-trip fares from Boston (BOS) to San Antonio (SAT) by trip length: a week away (6–9 nights) about $429 and around two weeks (10–16 nights) about $324. Medians from 78 recent fare combinations.
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Scout — our search agent — priced 62 fares on this route in the past week, cheapest $269 round trip. It hunts nonstop fares from Boston every night and pings you when one's worth booking.
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