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$985+ Cheap flights from St. Louis (STL) to Hanoi (HAN)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
STL — HAN
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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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 June 12, 2025.

Round-trip from

$985
(oojo)

Popular in

April

Cheapest in

March

Average price

$1,562
From Lambert-St Louis to Hanoi Noibai
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($276 potential increase over avg. RT price).
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Cheapest flight prices on average. 8% potential price decrease ($116 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2025
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Find flight deals from St. Louis to Hanoi

Cheapest flights from St. Louis to Hanoi
Explore the most affordable flight options available from St. Louis to Hanoi. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

This oojo deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/156:30 pmSTL - HAN
2 stops28h 05mChina Airlines
Mon 9/225:50 pmHAN - STL
2 stops35h 44mChina Airlines
Deal found 6/11$985
This Gurufare deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/296:45 amSTL - HAN
2 stops28h 20mANA
Wed 11/512:25 amHAN - STL
2 stops48h 48mANA
Deal found 6/11$1,006
This oojo deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/304:01 pmSTL - HAN
2 stops37h 14mEVA Air
Wed 11/56:20 pmHAN - STL
2 stops42h 38mEVA Air
Deal found 6/10$1,048
This United Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/295:29 pmSTL - HAN
3 stops41h 36mUnited Airlines
Wed 11/512:25 amHAN - STL
2 stops29h 38mUnited Airlines
Deal found 6/11$1,105
This EVA Air deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure EVA Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/153:35 pmSTL - HAN
2 stops31h 30mMultiple Airlines
Mon 9/2212:05 pmHAN - STL
3 stops39h 39mMultiple Airlines
Deal found 6/11$1,260
This Delta deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/311:18 amSTL - HAN
2 stops35h 22mDelta
Sun 8/1012:00 pmHAN - STL
2 stops24h 38mDelta
Deal found 6/12$1,296
This Emirates deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Emirates is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/153:20 pmSTL - HAN
2 stops33h 55mEmirates
Sun 9/211:30 amHAN - STL
2 stops32h 38mEmirates
Deal found 6/11$1,751
This Ovago deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/310:08 amSTL - HAN
2 stops47h 07mQatar Airways
Sat 8/93:00 amHAN - STL
2 stops32h 59mQatar Airways
Deal found 6/12$1,952

Cheapflights Fare Finder

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 2,558,603 searches. Data last updated June 12, 2025.
Use the filters below to find and compare flights from St. Louis to Hanoi that are best for you.

Fly from

St. Louis

Fly to

Hanoi

Route

Depart

Return

Price

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Mon 9/15

6:30 pm-10:35 am

2 stops28h 05m

Hanoi Noibai

Mon 9/22

5:50 pm-5:34 pm

2 stops35h 44m

$985

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Wed 10/29

6:45 am-11:05 pm

2 stops28h 20m

Hanoi Noibai

Wed 11/5

12:25 am-12:13 pm

2 stops48h 48m

$1,006

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Thu 10/30

4:01 pm-5:15 pm

2 stops37h 14m

Hanoi Noibai

Wed 11/5

6:20 pm-11:58 pm

2 stops42h 38m

$1,048

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Wed 10/29

5:29 pm-11:05 pm

3 stops41h 36m

Hanoi Noibai

Wed 11/5

12:25 am-5:03 pm

2 stops29h 38m

$1,105

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Mon 9/15

3:35 pm-11:05 am

2 stops31h 30m

Hanoi Noibai

Mon 9/22

12:05 pm-3:44 pm

3 stops39h 39m

$1,260

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Sun 8/3

11:18 am-10:40 am

2 stops35h 22m

Hanoi Noibai

Sun 8/10

12:00 pm-12:38 am

2 stops24h 38m

$1,296

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Mon 9/15

3:20 pm-1:15 pm

2 stops33h 55m

Hanoi Noibai

Sun 9/21

1:30 am-10:08 pm

2 stops32h 38m

$1,751

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Sun 8/3

10:08 am-9:15 pm

2 stops47h 07m

Hanoi Noibai

Sat 8/9

3:00 am-11:59 pm

2 stops32h 59m

$1,952

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Best time to book a flight from St. Louis to Hanoi

Have a flexible travel schedule? Discover the best time to fly to Hanoi from St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Hanoi

What is the cheapest time of day to fly from STL to HAN?

Find hourly flight availability from St. Louis to Hanoi. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 12, 2025.

It’s optimal to fly from St. Louis to Hanoi at noon. By choosing this option you can save up to 36% on the cost of your flight, compared to a flight in the morning.

Rainfall in Hanoi by month

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

In terms of precipitation, rainfall in Hanoi ranges from 0.6 - 11.7 inches per month. August is typically the wettest month, when rainfall can reach 11.7 in. December is typically the driest time to visit Hanoi when rainfall is around 0.6 in.

Temperature in Hanoi by month

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

If weather is an important factor for your trip to Hanoi, use this chart to help with planning. For those seeking warmer temperatures, June is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 62.6 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 June 12, 2025.
EVA Air
8.4
Very good
1,202 reviews

Overall

8.4

Entertainment

8.0

Comfort

8.3

Food

8.1

Boarding

8.4

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
EVA Air
8.4
Very good
1,202 reviews
EVA Air
8.4
Very good
1,202 reviews

Overall

8.4

Entertainment

8.0

Comfort

8.3

Food

8.1

Boarding

8.4

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
China Airlines
8.3
Very good
738 reviews
EVA Air
8.4
Very good
1,202 reviews

Overall

8.4

Entertainment

8.0

Comfort

8.3

Food

8.1

Boarding

8.4

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
ANA
8.3
Very good
882 reviews
EVA Air
8.4
Very good
1,202 reviews

Overall

8.4

Entertainment

8.0

Comfort

8.3

Food

8.1

Boarding

8.4

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Emirates
8.1
Very good
3,264 reviews
EVA Air
8.4
Very good
1,202 reviews

Overall

8.4

Entertainment

8.0

Comfort

8.3

Food

8.1

Boarding

8.4

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Delta
8.0
Very good
7,946 reviews
EVA Air
8.4
Very good
1,202 reviews

Overall

8.4

Entertainment

8.0

Comfort

8.3

Food

8.1

Boarding

8.4

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

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.

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

    Currently priced at $985, China Airlines will fly you from St. Louis to Hanoi and back. In addition to China Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from ANA and EVA Air - these airlines can fly you to your destination from $1,006 and $1,048, respectively. Users have found that China Airlines is 35% cheaper than the other options available to this destination.

  • 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.

  • What is the cheapest month to book a flight from St. Louis to Hanoi?

    Currently, September is the cheapest month in which you can book a flight from St. Louis to Hanoi (average of $975). Flying from St. Louis to Hanoi in December is currently the most expensive (average of $1,618). 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.

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.

Top airline flying from St. Louis to Hanoi

Discover the top airline 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 2,558,603 searches. Data last updated June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$920Average$1,656FlexibilityNo cancel feeOn-timeN/A

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