HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news

Cheap flights from St. Louis (STL) to Hanoi (HAN) from $639

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/2. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
STL — HAN
Apr 29 — May 61
From?
To?
Mon 4/29
Mon 5/6
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Cheap flight deals from St. Louis to Hanoi

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Hanoi (HAN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 24, 2024.

Popular in

June

Cheapest in

September

Round-trip from

$1,066

One-way from

$639
High demand for flights, 37% potential price rise
Search Deals
Best time to find cheap flights, 25% potential price drop
Search Deals
From Lambert-St Louis to Hanoi Noibai
Search Deals
One-way flight from Lambert-St Louis to Hanoi Noibai
Search Deals

What is the cheapest day to fly round-trip from St. Louis to Hanoi?

Users have found that flying from St. Louis to Hanoi on a Sunday typically leans towards higher prices. However, this doesn’t mean you still can’t find a deal. Flexibility with other aspects of your flight can still land a great price for your trip.

What is the cheapest month to fly from St. Louis to Hanoi?

The best pricing can be found in the month of September. Prices to Hanoi from St. Louis average $1,604. You can even find prices in September for less than $1,604, as users have found deals to Hanoi from as low as $1,207. The month of June appears to be one of the more expensive times to travel to Hanoi from St. Louis. Flying in the targeted month can save you up to 59%.

When is the cheapest time to fly from St. Louis to Hanoi (STL - HAN)?

It’s optimal to fly from St. Louis to Hanoi at noon. By choosing this option you can save up to 24% on the cost of your flight, compared to a flight in the afternoon.

Cheap United Airlines flights from St. Louis to Hanoi

Explore cheap flight options specifically provided by United Airlines for the route between St. Louis and Hanoi. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 3,073,952 searches. Data last updated April 24, 2024.
Thu 10/36:15 amSTL - HAN
2 stops28h 00mUnited Airlines
Mon 10/711:30 pmHAN - STL
3 stops28h 52mUnited Airlines
Deal found 4/22$1,483
Mon 7/85:30 pmSTL - HAN
2 stops40h 45mUnited Airlines
Wed 8/711:35 pmHAN - STL
3 stops52h 53mUnited Airlines
Deal found 4/23$2,814

St. Louis to Hanoi 2024 flight deals

Discover exclusive flight deals for travel between St. Louis and Hanoi in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 3,073,952 searches. Data last updated April 24, 2024.
Thu 10/36:30 amSTL - HAN
2 stops40h 25mDelta
Mon 10/712:15 pmHAN - STL
2 stops21h 16mDelta
Deal found 4/23$1,479
Thu 10/36:15 amSTL - HAN
2 stops28h 00mUnited Airlines
Mon 10/711:30 pmHAN - STL
3 stops28h 52mUnited Airlines
Deal found 4/22$1,483
Thu 10/34:17 pmSTL - HAN
2 stops26h 58mQatar Airways
Sun 10/63:30 amHAN - STL
2 stops30h 05mQatar Airways
Deal found 4/23$1,564
Mon 7/87:32 pmSTL - HAN
2 stops33h 18mMultiple Airlines
Wed 8/76:00 pmHAN - STL
2 stops31h 20mMultiple Airlines
Deal found 4/23$1,956
Mon 7/85:30 pmSTL - HAN
2 stops40h 45mUnited Airlines
Wed 8/711:35 pmHAN - STL
3 stops52h 53mUnited Airlines
Deal found 4/23$2,814
Mon 7/86:00 amSTL - HAN
2 stops27h 35mMultiple Airlines
Tue 8/61:30 amHAN - STL
2 stops34h 29mMultiple Airlines
Deal found 4/23$2,933
Mon 7/84:36 pmSTL - HAN
3 stops37h 29mAir Canada
Wed 8/711:35 pmHAN - STL
3 stops34h 36mAir Canada
Deal found 4/23$3,330

One-way flights to Hanoi from St. Louis

Search for one-way flight options from St. Louis to Hanoi. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 3,073,952 searches. Data last updated April 24, 2024.
Mon 9/25:30 pmSTL - HAN
2 stops34h 05mMultiple Airlines
Deal found 4/23$639
Sun 9/14:45 pmSTL - HAN
3 stops48h 55mMultiple Airlines
Deal found 4/23$643
Wed 8/282:34 pmSTL - HAN
2 stops31h 36mMultiple Airlines
Deal found 4/23$668
Mon 9/24:45 pmSTL - HAN
3 stops48h 45mMultiple Airlines
Deal found 4/23$672
Wed 8/2811:36 amSTL - HAN
3 stops35h 19mMultiple Airlines
Deal found 4/23$683
Wed 8/283:25 pmSTL - HAN
1 stop26h 40mMultiple Airlines
Deal found 4/23$5,243

Find flights from St. Louis to Hanoi within your budget

Customize your flight search to find flights from St. Louis to Hanoi that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 3,073,952 searches. Data last updated April 24, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$1,479 - $3,330

Route

Depart

Return

Price

Lambert-St LouisHanoi Noibai

STL - HAN

STLHAN

Lambert-St Louis

Thu 10/3

2 stops40h 25m

Hanoi Noibai

Mon 10/7

2 stops21h 16m

$1,479

Lambert-St LouisHanoi Noibai

STL - HAN

STLHAN

Lambert-St Louis

Thu 10/3

2 stops28h 00m

Hanoi Noibai

Mon 10/7

3 stops28h 52m

$1,483

Lambert-St LouisHanoi Noibai

STL - HAN

STLHAN

Lambert-St Louis

Thu 10/3

2 stops26h 58m

Hanoi Noibai

Sun 10/6

2 stops30h 05m

$1,564

Lambert-St LouisHanoi Noibai

STL - HAN

STLHAN

Lambert-St Louis

Mon 7/8

2 stops33h 18m

Hanoi Noibai

Wed 8/7

2 stops31h 20m

$1,956

Lambert-St LouisHanoi Noibai

STL - HAN

STLHAN

Lambert-St Louis

Mon 7/8

2 stops40h 45m

Hanoi Noibai

Wed 8/7

3 stops52h 53m

$2,814

Lambert-St LouisHanoi Noibai

STL - HAN

STLHAN

Lambert-St Louis

Mon 7/8

2 stops27h 35m

Hanoi Noibai

Tue 8/6

2 stops34h 29m

$2,933

Lambert-St LouisHanoi Noibai

STL - HAN

STLHAN

Lambert-St Louis

Mon 7/8

3 stops37h 29m

Hanoi Noibai

Wed 8/7

3 stops34h 36m

$3,330

Flights are sorted by cheapest first

Deals found on 4/23

When is the cheapest time to fly from St. Louis to Hanoi?

Use this chart to determine the cheapest time to fly round-trip from St. Louis to Hanoi. Price data was last updated on April 21, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their St. Louis to Hanoi flight should consider departing on Tuesday mornings when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Average price of flights to Hanoi by month

Plan your trip from St. Louis to Hanoi by taking into account the cheapest months to travel. The average price of a one-way flight from St. Louis to Hanoi is currently $1,425 while a round-trip flight costs $2,223. Price data was last updated on April 21, 2024.

Currently, March is the cheapest month in which you can book a flight from St. Louis to Hanoi (average of $1,066). Flying from St. Louis to Hanoi in June is currently the most expensive (average of $1,636). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

January

$1,188

February

$1,114

March

$1,066

April

$1,126

May

$1,314

June

$1,636

July

$1,366

August

$1,234

September

$1,076

October

$1,125

November

$1,154

December

$1,355

Temperature and rainfall in Hanoi by month

Plan your trip to Hanoi by taking into account the average temperature and rainfall totals by month.

HAN

Temperature

62.6 - 84.2 °F

Reviews of airlines servicing Hanoi

Get insights into the airlines that provide service to Hanoi. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Hanoi. Reviews last updated April 24, 2024.
Delta
8.1
Very good
11,004 reviews
Check prices

Comfort

7.9

Crew

8.6

Entertainment

8.0

Overall

8.1

Boarding

8.2

Food

7.5

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

Delta
8.1
Very good
11,004 reviews
Delta
8.1
Very good
11,004 reviews
Check prices

Comfort

7.9

Crew

8.6

Entertainment

8.0

Overall

8.1

Boarding

8.2

Food

7.5

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

Qatar Airways
7.7
Good
4,480 reviews
Delta
8.1
Very good
11,004 reviews
Check prices

Comfort

7.9

Crew

8.6

Entertainment

8.0

Overall

8.1

Boarding

8.2

Food

7.5

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

United Airlines
7.4
Good
11,255 reviews
Delta
8.1
Very good
11,004 reviews
Check prices

Comfort

7.9

Crew

8.6

Entertainment

8.0

Overall

8.1

Boarding

8.2

Food

7.5

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

Air Canada
7.0
Good
6,857 reviews
Delta
8.1
Very good
11,004 reviews
Check prices

Comfort

7.9

Crew

8.6

Entertainment

8.0

Overall

8.1

Boarding

8.2

Food

7.5

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Hanoi. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • Can I find flights from St. Louis to Hanoi for under $1,500 on Cheapflights?

    Yes, there are multiple flights from St. Louis to Hanoi for under $1,500. The cheapest flight booked recently is on Delta for just $1,479, but on average you can expect to pay $2,222.

  • What are the cheapest airlines flying from St. Louis to Hanoi round-trip?

    Currently priced at $1,479, Delta will fly you from St. Louis to Hanoi and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from United Airlines and Qatar Airways - these airlines can fly you to your destination from $1,483 and $1,564, respectively. Users have found that Delta is 7% cheaper than the other options available to this destination.

  • What are the most popular airlines that fly from St. Louis to Hanoi?

    Before booking your flight from St. Louis to Hanoi check out the most popular airlines for this route: American Airlines, Delta or Japan Airlines.

  • What does STL to HAN mean?

    STL stands for Lambert-St Louis Airport, while HAN stands for Hanoi Noibai Airport. These codes are often called IATA codes, a set of identifiers established by IATA (International Air Transport Association) that is widely used by airlines and the aviation industry.

  • Can I find deals for flights from St. Louis to Hanoi that include extra baggage allowance?

    The amount of baggage you can bring on your St. Louis to Hanoi flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from St. Louis to Hanoi with specific airlines?

    Yes, Cheapflights allows you to browse and filter St. Louis to Hanoi flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from St. Louis to Hanoi that include hotel bookings?

    Yes. In addition to deals on St. Louis to Hanoi flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Hanoi?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Hanoi.

  • Can I find deals for business class flights from St. Louis to Hanoi?

    Yes. Cheapflights offers flight deals from St. Louis to Hanoi by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from St. Louis to Hanoi that allow pets onboard?

    Many airlines flying from St. Louis to Hanoi offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from St. Louis to Hanoi?

    Yes, you can often find last-minute deals on St. Louis to Hanoi flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the St. Louis to Hanoi flight deals updated?

    The St. Louis to Hanoi flight deals you see on this page were last updated on 4/23.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for St. Louis to Hanoi
See prices for flight routes from nearby airports that may be better suited for you.

St. Louis to Ho Chi Minh City flights
Kansas City to Ho Chi Minh City flights
Kansas City to Da Nang flights
Springfield to Ho Chi Minh City flights
Kansas City to Hanoi flights
St. Louis to Da Nang flights

Top 6 airlines flying from St. Louis to Hanoi

Discover the top 6 airlines that operate flights from St. Louis to Hanoi. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 3,073,952 searches. Data last updated April 24, 2024.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$936Average$1,492FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Qatar AirwaysCheapest$1,185Average$1,490FlexibilityNo cancel feeOn-time68%
Search Qatar Airways flights
Japan AirlinesCheapest$1,269Average$1,908FlexibilityNo cancel feeOn-time79%
Search Japan Airlines flights
DeltaCheapest$1,432Average$2,405FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
ANACheapest$1,491Average$1,647FlexibilityNo cancel feeOn-time80%
Search ANA flights
Korean AirCheapest$1,561Average$2,297FlexibilityNo cancel feeOn-time81%
Search Korean Air flights
Houston to Detroit flights
Las Vegas to Salt Lake City flights
Newark Airport to Punta Cana flights
Seattle to Denver flights
Denver to Kansas City flights
Los Angeles to Newark Airport flights
Seattle to New York flights
USA to India flights
Austin to San Diego flights
New York to Florida flights
San Diego to Seattle flights
St. Louis to Havana flights

Search flights from St. Louis to Hanoi by cabin class

Find flights from St. Louis to Hanoi, based on your preferred cabin class, be it economy, premium economy, business, or first class.
First Class
Business Class
Prem Econ Class
Economy Class

Book a flight to one of these trending destinations

User searches for flights to these destinations increased 20% or more in the past 90 days compared to other destinations
Flights to Perugia Sant Egidio
Flights to Biarritz Parme
Flights to Argostoli Cephalonia
Flights to Melilla
Flights to Milas–Bodrum
Flights to Girona Costa Brava
Flights to Fez Sais
Flights to Zakynthos Dionsios Salomos
Flights to Bourgas
Flights to Bodø
Flights to Reggio Calabria Tito Menniti
Flights to Bastia Poretta
Flights to Skiathos
Flights to Kalamata
Flights to Batumi
Flights to Menorca/Mahon
Flights to Kristiansand Kjevik
Flights to Champaign University-Willard
Flights to Kagoshima
Flights to Ohrid
Flights to Clermont-Ferrand Aulnat
Flights to Parikia Paros
Flights to Lanzhou Arpt
Flights to Mason City

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from St. Louis to Hanoi?

When you search for this flight from St. Louis to Hanoi, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from St. Louis to Hanoi?

Cheapflights simply makes it quick and affordable to book flights from St. Louis to Hanoi by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from St. Louis to Hanoi with no change fees?

Certainly. Search results for flights to Hanoi from St. Louis shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from St. Louis to Hanoi become cheaper?

Of course! You can now track prices for flights from St. Louis to Hanoi and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
View all available airlines