Cheap flights from San Marcos

View AU$137 flight on Mon, 14 Sept 2026Opens in a new window

Popular airlines from San Marcos

  • American Airlines

  • Delta

  • United

  • Alaska Airlines

  • Frontier Airlines

  • Southwest Airlines

  • JetBlue Airways

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 35% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheapest flights from San Marcos

These prices were available within the past 7 days. Prices quoted are per person, return, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Fri, 7 Aug - Sun, 9 Aug
AUS
Austin
ATL
Atlanta
AU$275 Return, found 6 days ago
AU$275
Return
found 6 days ago
Select Delta flight, departing Fri, 7 Aug from Austin to Atlanta, returning Sun, 9 Aug, priced at AU$275 found 6 days ago
Delta
Thu, 3 Sept - Sat, 12 Sept
AUS
Austin
ATL
Atlanta
AU$291 Return, found 1 day ago
AU$291
Return
found 1 day ago
Select Delta flight, departing Thu, 3 Sept from Austin to Atlanta, returning Sat, 12 Sept, priced at AU$291 found 1 day ago
American Airlines
Sat, 11 July - Thu, 16 July
AUS
Austin
DEN
Denver
AU$293 Return, found 2 days ago
AU$293
Return
found 2 days ago
Select American Airlines flight, departing Sat, 11 July from Austin to Denver, returning Thu, 16 July, priced at AU$293 found 2 days ago
United
Tue, 4 Aug - Wed, 19 Aug
AUS
Austin
SFO
San Francisco
AU$337 Return, found 4 days ago
AU$337
Return
found 4 days ago
Select United flight, departing Tue, 4 Aug from Austin to San Francisco, returning Wed, 19 Aug, priced at AU$337 found 4 days ago
United
Sat, 11 July - Wed, 29 July
AUS
Austin
SFO
San Francisco
AU$338 Return, found 13 hours ago
AU$338
Return
found 13 hours ago
Select United flight, departing Sat, 11 July from Austin to San Francisco, returning Wed, 29 July, priced at AU$338 found 13 hours ago
American Airlines
Sat, 11 July - Thu, 16 July
AUS
Austin
DEN
Denver
AU$341 Return, found 2 days ago
AU$341
Return
found 2 days ago
Select American Airlines flight, departing Sat, 11 July from Austin to Denver, returning Thu, 16 July, priced at AU$341 found 2 days ago
Delta
Fri, 7 Aug - Sun, 9 Aug
AUS
Austin
ATL
Atlanta
AU$344 Return, found 6 days ago
AU$344
Return
found 6 days ago
Select Delta flight, departing Fri, 7 Aug from Austin to Atlanta, returning Sun, 9 Aug, priced at AU$344 found 6 days ago
Delta
Thu, 9 July - Tue, 14 July
AUS
Austin
LAX
Los Angeles
AU$360 Return, found 4 days ago
AU$360
Return
found 4 days ago
Select Delta flight, departing Thu, 9 July from Austin to Los Angeles, returning Tue, 14 July, priced at AU$360 found 4 days ago
Alaska Airlines
Wed, 5 Aug - Sat, 8 Aug
AUS
Austin
LAX
Los Angeles
AU$386 Return, found 6 days ago
AU$386
Return
found 6 days ago
Select Alaska Airlines flight, departing Wed, 5 Aug from Austin to Los Angeles, returning Sat, 8 Aug, priced at AU$386 found 6 days ago
JetBlue Airways
Sat, 18 July - Sun, 2 Aug
AUS
Austin
BOS
Boston
AU$564 Return, found 5 days ago
AU$564
Return
found 5 days ago
Select JetBlue Airways flight, departing Sat, 18 July from Austin to Boston, returning Sun, 2 Aug, priced at AU$564 found 5 days ago

Travel information

Flights from San Marcos: Essential Travel Information

Cheapest flight from San Marcos
AU$275 (roundtrip)
Best airlines to fly from San Marcos
American Airlines, Delta, United, Alaska Airlines, JetBlue Airways
Cheapest month to fly from San Marcos
August
San Marcos IATA code
AUS
San Marcos Country/State
Texas
Airline ticket deals from San Marcos
AU$275 - AU$564

Explore a world of travel with Expedia

*Available to Expedia members.