Earn point on your loyalty program!arrow arc left

Cheap flights from St Louis (STL) to Hanoi (HAN)

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 Hanoi (HAN)

How to find the cheapest flight from St Louis (STL) to Hanoi (HAN)
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 Hanoi (HAN)
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 Hanoi (HAN)
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 Hanoi in June , July 2026

28 Jun - 06 Jul $ 1,771.00
STL
St Louis
United Airlines
2 STOPS
HAN
Hanoi
HAN
Hanoi
United Airlines
2 STOPS
STL
St Louis
Pick dates
28 Jun - 06 Jul $ 1,803.00
STL
St Louis
United Airlines
2 STOPS
HAN
Hanoi
HAN
Hanoi
United Airlines
2 STOPS
STL
St Louis
Pick dates
30 Jun - 06 Jul $ 2,153.00
STL
St Louis
Cathay Pacific
2 STOPS
HAN
Hanoi
HAN
Hanoi
Cathay Pacific
2 STOPS
STL
St Louis
Pick dates

Last minute flights from St Louis to Hanoi

28 Jun - 01 Jul $ 1,897.00
STL
St Louis
Frontier Airlines
2 STOPS
HAN
Hanoi
HAN
Hanoi
Frontier Airlines
3 STOPS
STL
St Louis
Pick dates
28 Jun - 01 Jul $ 1,997.00
STL
St Louis
Frontier Airlines
3 STOPS
HAN
Hanoi
HAN
Hanoi
Frontier Airlines
3 STOPS
STL
St Louis
Pick dates
28 Jun - 01 Jul $ 2,004.00
STL
St Louis
Alaska Airlines
2 STOPS
HAN
Hanoi
HAN
Hanoi
Alaska Airlines
2 STOPS
STL
St Louis
Pick dates

One-way flights to Hanoi from St Louis

6:02 AM - 6:25 AM
VietJet Air
2 Stops
38h 53m
STL - HAN
$ 943
Kiwi
Pick dates
6:35 AM - 8:45 AM
Cathay Pacific
2 Stops
39h 20m
STL - HAN
$ 1,010
Kiwi
Pick dates
7:56 PM - 2:40 PM
Starlux Airlines
2 Stops
32h 54m
STL - HAN
$ 1,230
Kiwi
Pick dates

How to find the cheapest flight from St Louis (STL) to Hanoi (HAN)

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 Hanoi (HAN)
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 Hanoi (HAN)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.