Cheap flights to St. Louis – Compare and Save

— STL
8 Jun — 15 Jun1
1 adult
1 adult, Economy, 0 bags

Flights to St. Louis in 2026

Find the latest flights to St. Louis in 2026, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 647,157 searches and data was last updated on 9 May 2026.

Return from

$1,486

One-way from

$882

Popular in

April

Cheapest in

September

Average price

$1,849
American Airlines
  • American Airlines
  • 20/5-28/5
  • 4 total stops
  • 52h 06m total
  • Sydney to St. Louis
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American Airlines
  • American Airlines
  • 30/7
  • 2 total stops
  • 25h 41m total
  • Sydney to St. Louis
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($96 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($41 potential savings vs. average return price).
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Average for return flights in May 2026
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Find flight deals to St. Louis

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Cheapest flights to St. Louis
Explore the most affordable flight options available to St. Louis. Find the lowest fares based on data from user searches, with prices last updated on 9 May 2026.

Tue 12/509:10
SYD
-
STL
2 stops23h 11m
American Airlines
Wed 20/514:37
STL
-
SYD
2 stops25h 28m
American Airlines
Deal found 8/5$1,435
Tue 12/509:10
SYD
-
STL
2 stops23h 11m
Qantas Airways
Wed 20/506:21
STL
-
SYD
1 stop33h 44m
Qantas Airways
Deal found 8/5$1,446
Tue 12/509:10
SYD
-
STL
1 stop29h 49m
American Airlines
Wed 20/506:21
STL
-
SYD
1 stop33h 44m
American Airlines
Deal found 8/5$1,454
Wed 20/509:10
SYD
-
STL
2 stops25h 20m
American Airlines
Thu 28/513:19
STL
-
SYD
2 stops26h 46m
American Airlines
Deal found 7/5$1,486
Wed 20/510:20
SYD
-
STL
1 stop23h 02m
United Airlines
Thu 28/519:23
STL
-
SYD
1 stop20h 32m
United Airlines
Deal found 6/5$1,498
Wed 20/509:15
SYD
-
STL
2 stops27h 23m
Delta
Thu 28/510:49
STL
-
SYD
2 stops29h 01m
Delta
Deal found 5/5$1,502
Wed 20/509:10
SYD
-
STL
2 stops23h 11m
American Airlines
Thu 28/506:35
STL
-
SYD
1 stop33h 55m
American Airlines
Deal found 8/5$1,507
Wed 20/510:20
SYD
-
STL
1 stop23h 02m
United Airlines
Thu 28/519:23
STL
-
SYD
1 stop20h 32m
United Airlines
Deal found 7/5$1,512
Mon 8/609:20
SYD
-
STL
2 stops50h 05m
Air Canada
Sun 14/613:05
STL
-
SYD
2 stops51h 15m
Air Canada
Deal found 9/5$1,573
Mon 8/609:20
SYD
-
STL
2 stops26h 05m
Air Canada
Sun 14/613:05
STL
-
SYD
3 stops51h 15m
Air Canada
Deal found 9/5$1,584
Mon 8/609:20
SYD
-
STL
3 stops50h 05m
Air Canada
Sun 14/613:05
STL
-
SYD
3 stops51h 15m
Air Canada
Deal found 9/5$1,648
Wed 20/509:20
SYD
-
STL
2 stops26h 05m
Air Canada
Thu 28/513:05
STL
-
SYD
3 stops51h 15m
Air Canada
Deal found 6/5$1,674

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