Earn point on your loyalty program!arrow arc left

Cheap flights from St Louis (STL) to Asuncion (ASU)

Know your dates, get live prices in seconds
airplane logo

pin logo

calendar
Departure
calendar backward
Return
airplane logo
1 Adults (11+)
0 Children (2~11)
0 Infants (0~2)
Save up to 31%
Book Flight + Hotel at the same time

How to find the cheapest flight from St Louis (STL) to Asuncion (ASU)

How to find the cheapest flight from St Louis (STL) to Asuncion (ASU)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from St Louis (STL) to Asuncion (ASU)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from St Louis (STL) to Asuncion (ASU)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.

Cheap flights from St Louis to Asuncion in January , February 2026

20 Jan - 26 Feb $ 1,115.00
STL
St Louis
Frontier Airlines
2 STOPS
ASU
Asuncion
ASU
Asuncion
Frontier Airlines
2 STOPS
STL
St Louis
Pick dates
20 Jan - 24 Feb $ 1,139.00
STL
St Louis
Frontier Airlines
2 STOPS
ASU
Asuncion
ASU
Asuncion
Frontier Airlines
2 STOPS
STL
St Louis
Pick dates
20 Jan - 07 Feb $ 1,145.00
STL
St Louis
Frontier Airlines
2 STOPS
ASU
Asuncion
ASU
Asuncion
Frontier Airlines
2 STOPS
STL
St Louis
Pick dates

Last minute flights from St Louis to Asuncion

20 Jan - 02 Feb $ 1,201.00
STL
St Louis
Frontier Airlines
2 STOPS
ASU
Asuncion
ASU
Asuncion
Frontier Airlines
3 STOPS
STL
St Louis
Pick dates
20 Jan - 31 Jan $ 1,458.00
STL
St Louis
Frontier Airlines
2 STOPS
ASU
Asuncion
ASU
Asuncion
Frontier Airlines
3 STOPS
STL
St Louis
Pick dates
20 Jan - 31 Jan $ 1,564.00
STL
St Louis
Frontier Airlines
2 STOPS
ASU
Asuncion
ASU
Asuncion
Frontier Airlines
2 STOPS
STL
St Louis
Pick dates

One-way flights to Asuncion from St Louis

11:20 AM - 3:51 PM
Copa Airlines
3 Stops
33h 54m
STL - ASU
$ 576
Kiwi
Pick dates
2:50 PM - 3:51 PM
Copa Airlines
3 Stops
30h 24m
STL - ASU
$ 612
Kiwi
Pick dates
6:00 AM - 6:55 PM
Copa Airlines
2 Stops
18h 11m
STL - ASU
$ 659
Kiwi
Pick dates

How to find the cheapest flight from St Louis (STL) to Asuncion (ASU)

Related info for your journey
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from St Louis (STL) to Asuncion (ASU)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from St Louis (STL) to Asuncion (ASU)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.