$560 Cheap Flights from Hanoi (HAN) to St. Louis (STL)

View $560 flight on Wed, Apr 8, 2026Opens in a new window

Popular airlines from Noi Bai Intl. Airport (HAN) to St. Louis Lambert Intl. Airport (STL)

Cheap Flights from Hanoi to St. Louis (HAN-STL)

Prices were available within the past 7 days and start at $560 for one-way flights and $1,083 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Asiana Airlines
Mon, Mar 16 - Fri, Mar 20
HAN
Hanoi
STL
St. Louis
$1,083 Roundtrip, found 14 hours ago
$1,083
Roundtrip
found 14 hours ago
Select Asiana Airlines flight, departing Mon, Mar 16 from Hanoi to St. Louis, returning Fri, Mar 20, priced at $1,083 found 14 hours ago
Cathay Pacific
Thu, Jan 22 - Sun, Feb 8
HAN
Hanoi
STL
St. Louis
$1,104 Roundtrip, found 12 hours ago
$1,104
Roundtrip
found 12 hours ago
Select Cathay Pacific flight, departing Thu, Jan 22 from Hanoi to St. Louis, returning Sun, Feb 8, priced at $1,104 found 12 hours ago
Cathay Pacific
Sat, Nov 1 - Mon, Nov 17
HAN
Hanoi
STL
St. Louis
$1,123 Roundtrip, found 12 hours ago
$1,123
Roundtrip
found 12 hours ago
Select Cathay Pacific flight, departing Sat, Nov 1 from Hanoi to St. Louis, returning Mon, Nov 17, priced at $1,123 found 12 hours ago
Cathay Pacific
Sat, Nov 1 - Sun, Nov 16
HAN
Hanoi
STL
St. Louis
$1,140 Roundtrip, found 12 hours ago
$1,140
Roundtrip
found 12 hours ago
Select Cathay Pacific flight, departing Sat, Nov 1 from Hanoi to St. Louis, returning Sun, Nov 16, priced at $1,140 found 12 hours ago
Cathay Pacific
Wed, Jan 21 - Thu, Feb 5
HAN
Hanoi
STL
St. Louis
$1,143 Roundtrip, found 12 hours ago
$1,143
Roundtrip
found 12 hours ago
Select Cathay Pacific flight, departing Wed, Jan 21 from Hanoi to St. Louis, returning Thu, Feb 5, priced at $1,143 found 12 hours ago
Cathay Pacific
Tue, Nov 11 - Sun, Nov 23
HAN
Hanoi
STL
St. Louis
$1,149 Roundtrip, found 12 hours ago
$1,149
Roundtrip
found 12 hours ago
Select Cathay Pacific flight, departing Tue, Nov 11 from Hanoi to St. Louis, returning Sun, Nov 23, priced at $1,149 found 12 hours ago
Cathay Pacific
Sat, Dec 6 - Wed, Dec 24
HAN
Hanoi
STL
St. Louis
$1,163 Roundtrip, found 12 hours ago
$1,163
Roundtrip
found 12 hours ago
Select Cathay Pacific flight, departing Sat, Dec 6 from Hanoi to St. Louis, returning Wed, Dec 24, priced at $1,163 found 12 hours ago
United
Wed, Nov 12 - Mon, Nov 24
HAN
Hanoi
STL
St. Louis
$1,202 Roundtrip, found 12 hours ago
$1,202
Roundtrip
found 12 hours ago
Select United flight, departing Wed, Nov 12 from Hanoi to St. Louis, returning Mon, Nov 24, priced at $1,202 found 12 hours ago
Vietnam Airlines
Thu, Nov 6 - Mon, Nov 17
HAN
Hanoi
STL
St. Louis
$1,207 Roundtrip, found 12 hours ago
$1,207
Roundtrip
found 12 hours ago
Select Vietnam Airlines flight, departing Thu, Nov 6 from Hanoi to St. Louis, returning Mon, Nov 17, priced at $1,207 found 12 hours ago
All Nippon Airways
Thu, Jan 22 - Mon, Jan 26
HAN
Hanoi
STL
St. Louis
$1,210 Roundtrip, found 21 hours ago
$1,210
Roundtrip
found 21 hours ago
Select All Nippon Airways flight, departing Thu, Jan 22 from Hanoi to St. Louis, returning Mon, Jan 26, priced at $1,210 found 21 hours ago

Alternative airports near St. Louis

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Lambert-St. Louis Intl. STL. Cheapest option available. Average driving time to city center is 20 minutes. Flights from $1,277
STL
Lambert-St. Louis Intl.
Cheapest
Average driving time to city center20 min
Flights from $1,277

Frequently asked questions

How much does a flight from Noi Bai Intl. Airport (HAN) to Lambert-St. Louis Intl. Airport (STL) cost?
Grab a cheap one-way flight from $560 or cheap return flight from $1,083 from Noi Bai Intl. Airport (HAN) to Lambert-St. Louis Intl. Airport (STL) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Noi Bai Intl. Airport (HAN) to Lambert-St. Louis Intl. Airport (STL)?
The cheapest month to fly from HAN to STL is March, when there's less demand. Off-peak months are generally when airlines offer better prices between these airports.
What is the cheapest airline that flies from Noi Bai Intl. Airport (HAN) to Lambert-St. Louis Intl. Airport (STL)?
To find the cheapest airline that'll fly you from HAN to STL, use Expedia's filter tool. Tailor your search based on your travel style, such as preferred carriers and seat class. You can then sort your results by "Price (lowest to highest)" to list the most affordable options first.
How many flights per day from Noi Bai Intl. Airport (HAN) to Lambert-St. Louis Intl. Airport (STL)?
You'll need to book a flight with a layover when traveling from Noi Bai Intl. Airport (HAN) to Lambert-St. Louis Intl. Airport (STL). There are no daily direct flights on this route. However, simply filter your search to include one or two stops to find an option that works for you.
What day of the week has the most flights from HAN to STL?
Typically you'll find the most flight options available on a Friday. Tuesdays tend to be the quietest.* But this can vary based on the time of year, carrier and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Noi Bai Intl. Airport (HAN) to Lambert-St. Louis Intl. Airport (STL)?
To avoid potential delays on the Noi Bai Intl. Airport (HAN) to Lambert-St. Louis Intl. Airport (STL) route, fly before 3 PM. Departures after this hour are 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Noi Bai Intl. Airport (HAN) to Lambert-St. Louis Intl. Airport (STL) last-minute?
Holding off until right before your break to book a ticket from HAN to STL often results in higher prices. While you may come across some last-minute discounts, they're not always guaranteed. Be flexible with your itinerary for the best chance of landing a bargain.
Is it cheaper to book a HAN to STL flight and hotel package?
Opting for a HAN to STL flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels in one place. Pick from our impressive range of hotels and then add car rentals, activities and flights to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Noi Bai Intl. Airport (HAN) to Lambert-St. Louis Intl. Airport (STL)?
If you booked your HAN to STL flight in the last 24 hours, you may be able to modify or cancel it without fees. Depending on the airline and the type of fare you purchased, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal if you want more information.

Travel information

Origin airport
Noi Bai Intl.
Destination airport
Lambert-St. Louis Intl.
Airlines serving
All Nippon Airways, American Airlines, Cathay Pacific, Delta, Japan Airlines, Korean Air, Qatar Airways, United
Roundtrip price
$1,082
Distance
8163 mi

Book with confidence

Hanoi to St. Louis Flights

The cheapest times to fly from Hanoi to St. Louis

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Hanoi to St. Louis are during the month of March. You can find some of the cheapest flights from Hanoi to St. Louis with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Hanoi to St. Louis

Sunday is one of the best days to book for cheap flights from Hanoi to St. Louis: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Hanoi to St. Louis

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Hanoi to St. Louis in 2025. You can also book with separate airlines for your outbound and return journeys, from $560 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Hanoi to St. Louis flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Hanoi to St. Louis airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Hanoi to St. Louis Flights

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*Available to One Key members.