Direct (nonstop) flights from Boston to San Antonio
1 airline flys nonstop from Boston Logan International Airport (BOS) to San Antonio International (SAT). It's 1,763 miles (2,838 km), about 4h 42m in the air. Operated by Delta Air Lines.
Delta Air Lines
Route data last updated: May 28, 2026
Airlines with non-stop flights
DL
Delta Air Lines
Alternative Routes
Other ways to fly from Boston to San Antonio with one stop · direct emits 298 kg CO₂ per passenger
Looking for the return flight?
SAT → BOS: Flights from San Antonio to BostonOther direct flights from Boston
Direct flights from San Antonio (SAT)
Frequently Asked Questions
How long is the direct flight from Boston to San Antonio?
A nonstop flight from Boston (BOS) to San Antonio (SAT) takes approximately 4 hours and 42 minutes. The distance is 1,763 miles (2,838 km).
Which airlines fly nonstop from Boston to San Antonio?
Just Delta Air Lines.
Is there a nonstop flight from Boston to San Antonio?
Yes. 1 airline: Delta Air Lines.
How far is Boston from San Antonio?
The flight distance from Boston to San Antonio is 1,763 miles (2,838 km), measured as the great-circle (shortest air) distance.
What type of aircraft flies from Boston to San Antonio?
At 4h 42m, this route typically uses narrow-body or mid-range jets — Boeing 737 MAX or Airbus A320neo. Varies by airline.
What is the carbon footprint of a flight from Boston to San Antonio?
Roughly 298 kg CO2 per passenger one-way. That's about the same as driving 1,490 km.
Is the return flight from San Antonio to Boston also nonstop?
Yes — nonstop flights run both ways. Flight time may differ slightly due to wind patterns.
When is the cheapest time to fly from Boston to San Antonio?
Midweek flights (Tue/Wed) outside holiday peaks are usually cheapest. 3-6 weeks ahead is a good window for this route. Use "Check Prices" above to compare.
How early should I arrive at Boston Logan International Airport for this flight?
1.5-2 hours for domestic. Add more time during holidays or busy travel weekends.