Cheap flights from Cost

View AU$112 flight on Wed, 1 July 2026Opens in a new window

Flight 1

Popular airlines from Cost

  • American Airlines

  • United

  • Delta

  • Frontier Airlines

  • Alaska Airlines

  • Spirit Airlines

  • Air Canada

  • 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 Cost

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
Tue, 21 Apr - Tue, 28 Apr
AUS
Austin
SFO
San Francisco
AU$224 Return, found 1 day ago
AU$224
Return
found 1 day ago
Select Delta flight, departing Tue, 21 Apr from Austin to San Francisco, returning Tue, 28 Apr, priced at AU$224 found 1 day ago
Delta
Tue, 21 Apr - Tue, 28 Apr
AUS
Austin
SFO
San Francisco
AU$238 Return, found 1 day ago
AU$238
Return
found 1 day ago
Select Delta flight, departing Tue, 21 Apr from Austin to San Francisco, returning Tue, 28 Apr, priced at AU$238 found 1 day ago
American Airlines
Tue, 21 Apr - Tue, 28 Apr
AUS
Austin
SFO
San Francisco
AU$243 Return, found 1 day ago
AU$243
Return
found 1 day ago
Select American Airlines flight, departing Tue, 21 Apr from Austin to San Francisco, returning Tue, 28 Apr, priced at AU$243 found 1 day ago
Delta
Sat, 21 Mar - Wed, 25 Mar
AUS
Austin
DEN
Denver
AU$281 Return, found 3 days ago
AU$281
Return
found 3 days ago
Select Delta flight, departing Sat, 21 Mar from Austin to Denver, returning Wed, 25 Mar, priced at AU$281 found 3 days ago
Alaska Airlines
Tue, 21 Apr - Tue, 28 Apr
AUS
Austin
SFO
San Francisco
AU$281 Return, found 1 day ago
AU$281
Return
found 1 day ago
Select Alaska Airlines flight, departing Tue, 21 Apr from Austin to San Francisco, returning Tue, 28 Apr, priced at AU$281 found 1 day ago
Delta
Sat, 2 May - Sat, 16 May
AUS
Austin
LAX
Los Angeles
AU$295 Return, found 1 day ago
AU$295
Return
found 1 day ago
Select Delta flight, departing Sat, 2 May from Austin to Los Angeles, returning Sat, 16 May, priced at AU$295 found 1 day ago
Delta
Wed, 29 Apr - Tue, 19 May
AUS
Austin
ATL
Atlanta
AU$306 Return, found 4 days ago
AU$306
Return
found 4 days ago
Select Delta flight, departing Wed, 29 Apr from Austin to Atlanta, returning Tue, 19 May, priced at AU$306 found 4 days ago
American Airlines
Sat, 18 Apr - Sat, 25 Apr
AUS
Austin
JFK
New York
AU$311 Return, found 4 days ago
AU$311
Return
found 4 days ago
Select American Airlines flight, departing Sat, 18 Apr from Austin to New York, returning Sat, 25 Apr, priced at AU$311 found 4 days ago
United
Tue, 21 Apr - Tue, 28 Apr
AUS
Austin
SFO
San Francisco
AU$343 Return, found 1 day ago
AU$343
Return
found 1 day ago
Select United flight, departing Tue, 21 Apr from Austin to San Francisco, returning Tue, 28 Apr, priced at AU$343 found 1 day ago
Air Canada
Wed, 14 Oct - Tue, 20 Oct
AUS
Austin
FCO
Rome
AU$1,052 Return, found 5 days ago
AU$1,052
Return
found 5 days ago
Select Air Canada flight, departing Wed, 14 Oct from Austin to Rome, returning Tue, 20 Oct, priced at AU$1,052 found 5 days ago

The Annual Holiday Sale

Members save up to 40% on hotels and homes. Plan this year’s big trip and save.
Book now

Travel information

Flights from Cost: Essential Travel Information

Cheapest flight from Cost
AU$224 (roundtrip)
Best airlines to fly from Cost
Delta, American Airlines, Alaska Airlines, United, Air Canada
Cheapest month to fly from Cost
April
Cost IATA code
null
Cost Country/State
Texas
Airline ticket deals from Cost
AU$224 - AU$1,052

Explore a world of travel with Expedia

*Available to Expedia members.