San Antonio to Baltimore flight

Flights from San Antonio to Baltimore start at €235.54 and take 6h 36m at their fastest.

San AntonioSan AntonioBaltimoreBaltimore

The Flights from San Antonio to Baltimore starts at €235.54 and takes 6h 36m door to door, run by 1 operator over 2,348 km, with around 5 departures a day. Fares bottom out about 45 days before departure.

Checked September 12, 2026Priced for September 28, 2026One passenger, all fees included

  • 6h 36mDoor to door
  • 3h 26mMoving
  • €235.54From
  • 577.6 kgCO2
Real services

The cheapest and the fastest on September 28, 2026

Two journeys we can sell today, with the service number each operator files them under.

Cheapest€209.59
  1. United Airlines UA144107:3051m08:21San Antonio SATHouston IAH
  2. United Airlines UA638009:253h 28m12:53Houston IAHBaltimore BWI

Changes at Houston, with 64 minutes between services and a walk of about 5 minutes.

Door to door 8h 33mCO2 587.0 kgChanges 1Fixed, no changes

Fastest€226.11
  1. Southwest Airlines SA171006:523h 26m10:18San Antonio SATBaltimore BWI

Door to door 6h 36mCO2 577.6 kgChanges 0Fixed, no changes

Lowest CO2€282.15
  1. United Airlines UA451307:303h 39m11:09San Antonio SATWashington IAD
  2. Amtrak A824912:4533m13:18Washington Union StationWest Baltimore

Changes at Washington, with 96 minutes between services and a walk of about 14 minutes.

Door to door 7h 45mCO2 567.2 kgChanges 1Fixed, no changes

Carriers

Airlines

Speed, flexibility and what is on board. Nothing here is a rating, because we have not earned one.

Every operator we sell on this corridor. Speed is the carrier's own typical cruising speed, not the average over this route.
OperatorFromFastestTypical speedFlexibilityOn board
Southwest Airlines€226.116h 32m740 km/hFixed fareNot published
  • Southwest Airlines

The flight gets you into Baltimore. It does not get you a bed, and neither do we.

A hotel room

Where to stay in Baltimore

Filter by neighborhood and by nightly price, and the map tells you what is a walk and what is a cab.

Partner links. We do not sell accommodation. We earn a commission when a booking completes, and it never changes what you pay.

Booking window

When to book San Antonio to Baltimore

The same search run across the whole booking window, so the shape of the curve is visible rather than described.

  1. €223.1690 days
  2. €178.3260 days
  3. €158.2645 days
  4. €158.8430 days
  5. €249.7121 days
  6. €299.2714 days
  7. €384.237 days
  8. €343.523 days
  9. €464.471 days
Cheapest lead time
Fares bottom out around 45 days ahead, at €158.26.
How much it moves
The gap between the cheapest and most expensive lead time is 193 percent. The most expensive point is €464.47, 1 days out.
What that means
Today sits inside the cheap window, which closes about 45 days before departure. Waiting from here has usually cost money on this corridor rather than saved it.
Day of the week

Which departure day costs least

Median cheapest fare for each weekday, taken across the next three weeks of real prices.

  1. €308.12Sun
  2. €235.54Mon
  3. €259.73Tue
  4. €257.38Wed
  5. €315.20Thu
  6. €315.79Fri
  7. €299.27Sat
Terminals

Where you leave from and where you arrive

The stations, airports and ports each mode on this corridor actually uses.

San Antonio

Air
  • SAT

Baltimore

Air
  • BWI
The journey

What the journey actually looks like

Direct or connecting, how far the route really runs, and what happens when a connection is missed.

Direct or connecting
20% of the services we sell on this corridor run through without a change. The remaining 80% involve one connection.
How far it really runs
The route covers 2,348 km against 2,280 km in a straight line, a detour of 3 percent. Track and road geometry account for the difference.
Where the change is
Connections are made at Louisville, Houston, Nashville, Washington. The gap between arriving and leaving is 54 minutes, of which about 5 is walking.
If the connection is missed
The tightest connection we sell here has a 17 percent chance of not being made on the timetable alone. Part of this journey is a self transfer between separate tickets, so leave more time than the minimum and expect to check in again.
First and last departure
The first service of the day leaves San Antonio at 06:52 and the last at 07:30, across 5 departures. The return direction keeps its own timetable, so the times back are not these times reversed.

Questions about San Antonio to Baltimore

The questions people actually ask about this trip, answered from the same prices and times the page above is built on rather than written once and left to go stale.

How long does the Flight from San Antonio to Baltimore take?

The Flight from San Antonio to Baltimore takes 6h 36m door to door, of which 3h 26m is spent moving. The route runs 2,348 km. The difference between the two times is reaching the terminal and leaving it at the far end, which every time on this page includes.

How much does the Flight from San Antonio to Baltimore cost?

The Flight from San Antonio to Baltimore starts at €235.54 for one passenger, checked on September 12, 2026. A typical fare is €230.83. Both are the total including taxes, supplier fees and our service fee, so the price here is the price at checkout.

Who runs the Flight from San Antonio to Baltimore?

1 operators run the Flight from San Antonio to Baltimore: Southwest Airlines. Between them they file around 5 departures a day. The operator table on this page compares them on fare, journey time, cruising speed, fare conditions and what is provided on board.

Which terminal does the Flight from San Antonio to Baltimore use?

The Flight from San Antonio to Baltimore leaves from San Antonio SAT and arrives at Baltimore BWI. Allow about 3h 10m for reaching the departure terminal and leaving the arrival one. That time is already inside every door to door figure quoted on this page.

When should I book the Flight from San Antonio to Baltimore?

Fares for the Flight from San Antonio to Baltimore bottom out around 45 days ahead, at €158.26. The gap between the cheapest and most expensive lead time across the window is 193 percent, measured on September 12, 2026. Booking inside the final week has consistently cost more.

How much CO2 does the Flight from San Antonio to Baltimore produce?

The Flight from San Antonio to Baltimore produces about 577.6 kg of CO2 per passenger over 2348 km, which works out at roughly 246 grams per passenger kilometer. That figure is for the whole journey and for one traveler, not for the vehicle.

Where these numbers come from

Observed service A carrier record shows this named operator serving this named pair, and we carry that through unchanged.

Schedules, seat counts and fares are generated by our own model until the supplier contracts are signed. Places, coordinates, operators, which operator serves which pair, and every distance are real. We would rather say that on every page than let a modeled number pass for a filed one.

Defined in full at Door to door, Fares, The booking window, Carbon

On this page
Every figure above was computed for San Antonio to Baltimore on September 12, 2026: 2348 km of route against 2280 km in a straight line, 5 services a day, 1 operators, a cheapest fare of €235.54, and 6h 36m door to door on the fastest mode. The return direction is computed separately and its numbers are not these numbers.

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