$540+ 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 2/9. Fares are subject to change and may not be available on all flights or dates of travel.
STL — HAN
Nov 11 — Nov 181
Round-trip
1 adult, Economy
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Find cheap flights from St. Louis to Hanoi with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from St. Louis to Hanoi
Cheapest
Best
Last-minute
One-way
Cheapest flights from St. Louis to HanoiExplore 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 October 12, 2026.
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 October 12, 2026.
This Cathay Pacific deal was found by Cheapflights users on 10/7. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/95:05 am -
2 stops40h 00m
Mon 11/1611:15 am -
2 stops42h 28m
Deal found 10/7![Multiple Airlines logo]()
$1,085
This KAYAK deal was found by Cheapflights users on 10/8. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/97:26 am -
2 stops45h 49m
Mon 11/167:25 pm -
2 stops36h 57m
Deal found 10/8![Cathay Pacific logo]()
$1,099
This Korean Air deal was found by Cheapflights users on 10/8. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/127:13 am -
2 stops38h 57m
Mon 11/1612:20 pm -
2 stops38h 03m
Deal found 10/8![Korean Air logo]()
$1,173
This United Airlines deal was found by Cheapflights users on 10/9. 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.
Mon 11/231:08 pm -
2 stops44h 57m
Sun 11/2912:25 am -
2 stops48h 57m
Deal found 10/9![United Airlines logo]()
$1,569
This Justfly.com deal was found by Cheapflights users on 10/9. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/24:05 pm -
2 stops42h 10m
Tue 1/1212:35 am -
2 stops51h 51m
Deal found 10/9![Air Canada logo]()
$5,925
This Travelocity deal was found by Cheapflights users on 10/9. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/34:04 pm -
2 stops32h 11m
Thu 1/142:25 pm -
2 stops37h 31m
Deal found 10/9![Multiple Airlines logo]()
$6,157
Best flights from St. Louis to HanoiDiscover carefully curated flight deals from St. Louis to Hanoi that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 12, 2026.
Discover carefully curated flight deals from St. Louis to Hanoi that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 12, 2026.
This Cathay Pacific deal was found by Cheapflights users on 10/7. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/95:05 am -
2 stops40h 00m
Mon 11/1611:15 am -
2 stops42h 28m
Deal found 10/7![Multiple Airlines logo]()
$1,085
This KAYAK deal was found by Cheapflights users on 10/8. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/97:26 am -
2 stops45h 49m
Mon 11/167:25 pm -
2 stops36h 57m
Deal found 10/8![Cathay Pacific logo]()
$1,099
This Korean Air deal was found by Cheapflights users on 10/7. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/127:13 am -
2 stops38h 57m
Mon 11/1612:20 pm -
2 stops38h 03m
Deal found 10/7![Korean Air logo]()
$1,173
This United Airlines deal was found by Cheapflights users on 10/9. 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.
Mon 11/231:08 pm -
2 stops44h 57m
Sun 11/2912:25 am -
2 stops48h 57m
Deal found 10/9![United Airlines logo]()
$1,569
Last-minute flights from St. Louis to HanoiDiscover last-minute flight deals from St. Louis to Hanoi. Data last updated October 12, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Hanoi. Data last updated October 12, 2026 and is based on user searches.
This Cathay Pacific deal was found by Cheapflights users on 10/7. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/95:05 am -
2 stops40h 00m
Mon 11/1611:15 am -
2 stops42h 28m
Deal found 10/7![Multiple Airlines logo]()
$1,085
This KAYAK deal was found by Cheapflights users on 10/8. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/97:26 am -
2 stops45h 49m
Mon 11/167:25 pm -
2 stops36h 57m
Deal found 10/8![Cathay Pacific logo]()
$1,099
This Korean Air deal was found by Cheapflights users on 10/7. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/127:13 am -
2 stops38h 57m
Mon 11/1612:20 pm -
2 stops38h 03m
Deal found 10/7![Korean Air logo]()
$1,173
This United Airlines deal was found by Cheapflights users on 10/9. 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.
Mon 11/231:08 pm -
2 stops44h 57m
Sun 11/2912:25 am -
2 stops48h 57m
Deal found 10/9![United Airlines logo]()
$1,569
One-way flights from St. Louis to HanoiSearch for one-way flight options from St. Louis to Hanoi. Find affordable one-way fares based on user searches. Data last updated October 12, 2026.
Search for one-way flight options from St. Louis to Hanoi. Find affordable one-way fares based on user searches. Data last updated October 12, 2026.
This FlightHub deal was found by Cheapflights users on 10/11. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/97:21 am -
2 stops45h 54m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/11![Cathay Pacific logo]()
$540
This oojo deal was found by Cheapflights users on 10/7. 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.
Tue 2/2311:56 am -
2 stops29h 59m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/7![Qatar Airways logo]()
$542
This Cathay Pacific deal was found by Cheapflights users on 10/8. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/27:23 am -
2 stops38h 32m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/8![Multiple Airlines logo]()
$609
This United Airlines deal was found by Cheapflights users on 10/7. 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.
Tue 2/231:08 pm -
3 stops44h 57m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/7![United Airlines logo]()
$668
This Kiwi.com deal was found by Cheapflights users on 10/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/93:54 pm -
3 stops34h 56m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/11![Multiple Airlines logo]()
$681
This Malaysia Airlines deal was found by Cheapflights users on 10/9. 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 Malaysia Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/26:00 am -
3 stops42h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/9![Malaysia Airlines logo]()
$1,440
Find 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 October 12, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,099 (KAYAK) |
One-way from | $540 (FlightHub) |
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 7,457,451 searches. Data last updated October 12, 2026.
Use the filters below to find and compare flights from St. Louis to Hanoi that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
St. LouisHanoi
STL Lambert-St Louis - HAN Hanoi Noibai
STLHAN
Lambert-St Louis
Fri 4/2
7:23 am-9:55 am
2 stops38h 32m
Hanoi Noibai
Wed 12/31
12:00 am-10:00 am
Nonstop0h 00m
$609
St. LouisHanoi
STL Lambert-St Louis - HAN Hanoi Noibai
STLHAN
Lambert-St Louis
Tue 2/23
1:08 pm-11:15 pm
3 stops45h 07m
Hanoi Noibai
Wed 12/31
12:00 am-10:00 am
Nonstop0h 00m
$668
St. LouisHanoi
STL Lambert-St Louis - HAN Hanoi Noibai
STLHAN
Lambert-St Louis
Mon 11/9
5:05 am-10:05 am
2 stops40h 00m
Hanoi Noibai
Mon 11/16
11:15 am-4:43 pm
2 stops42h 28m
$1,085
St. LouisHanoi
STL Lambert-St Louis - HAN Hanoi Noibai
STLHAN
Lambert-St Louis
Mon 11/9
7:26 am-6:15 pm
2 stops45h 49m
Hanoi Noibai
Mon 11/16
7:25 pm-7:22 pm
2 stops36h 57m
$1,099
St. LouisHanoi
STL Lambert-St Louis - HAN Hanoi Noibai
STLHAN
Lambert-St Louis
Thu 11/12
7:13 am-11:10 am
2 stops38h 57m
Hanoi Noibai
Mon 11/16
12:20 pm-1:23 pm
2 stops38h 03m
$1,173
St. LouisHanoi
STL Lambert-St Louis - HAN Hanoi Noibai
STLHAN
Lambert-St Louis
Fri 4/2
6:00 am-12:15 pm
3 stops42h 15m
Hanoi Noibai
Wed 12/31
12:00 am-10:00 am
Nonstop0h 00m
$1,440
St. LouisHanoi
STL Lambert-St Louis - HAN Hanoi Noibai
STLHAN
Lambert-St Louis
Mon 11/23
1:08 pm-11:05 pm
2 stops44h 57m
Hanoi Noibai
Sun 11/29
12:25 am-12:22 pm
2 stops48h 57m
$1,569
Sorted by cheapest first
Compare providers for flights from St. Louis to Hanoi
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Hanoi in October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on St. Louis-Hanoi flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Hanoi flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Hanoi flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on St. Louis-Hanoi flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Hanoi flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
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.
STL-HAN
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.
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 October 12, 2026.
Get a feel of what it's like to fly with Japan Airlines from St. Louis to Hanoi by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.4
Comfort
8.2
Food
7.7
Overall
8.3
Entertainment
7.8
Crew
8.7
Reviews
1 / 20
4.0
OkayClark,Aug 2026
BDL - ORD
Boarding
8.4
Comfort
8.2
Food
7.7
Overall
8.3
Entertainment
7.8
Crew
8.7
Reviews
1 / 20
4.0
OkayClark,Aug 2026
BDL - ORD
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.
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Complete your trip
Complete your trip to Hanoi by adding a car rental and/or hotel reservation to your travel itinerary.
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Other flights to Hanoi
Explore flights to Hanoi departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on October 12, 2026.
St. Louis and Hanoi flights
Browse other St. Louis and Hanoi flight options. Last updated on October 12, 2026.
Other flights from St. Louis
Browse through other flights departing from St. Louis. Flights are based on user searches made on Cheapflights and were last updated on October 12, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 7,457,451 searches. Data last updated October 12, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$1,013 | Average$1,266 | FlexibilityNo cancel fee | On-time79% |