Find flights
Deals
Insights
When to book
FAQs & Tips
Airlines

STL - HAN

Find cheap flights from St. Louis to Hanoi from $639

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Hanoi departing on 8/26. 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.
1 adult
0 bags
Sat 4/27
Sat 5/4

Search hundreds of travel sites at once for deals on flights to Hanoi

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Hanoi.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Hanoi.
In the last 7 days travelers have searched 46,342,885 times on KAYAK, and here is why:

Save 20% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Bundle and saveSave money when you bundle your flight + hotel.

Cheap flight deals from St. Louis to Hanoi

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Hanoi that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
12:20 pm - 6:05 pmSTL-HAN
41h 45m2 stops
8:00 am - 9:49 pmHAN-STL
25h 49m2 stops
$1,388
Find Deal
Fri, Apr 26 - Fri, May 3
6:02 pm - 9:50 pmSTL-HAN
39h 48m2 stops
11:20 pm - 10:58 pmHAN-STL
35h 38m2 stops
$1,739Japan Airlines
Find Deal
Fri, May 31 - Fri, Jun 14
7:32 pm - 4:50 pmSTL-HAN
33h 18m2 stops
6:00 pm - 1:20 pmHAN-STL
31h 20m2 stops
$1,842
Find Deal
Tue, Jul 2 - Tue, Jul 30
6:29 am - 9:50 pmSTL-HAN
27h 21m2 stops
11:20 pm - 11:07 pmHAN-STL
35h 47m2 stops
$1,898American Airlines
Find Deal
Tue, Jul 2 - Tue, Jul 30
12:20 pm - 6:05 pmSTL-HAN
41h 45m2 stops
1:30 am - 11:59 pmHAN-STL
34h 29m2 stops
$2,432
Find Deal
Fri, Apr 26 - Thu, May 2
3:10 pm - 10:15 pmSTL-HAN
43h 05m2 stops
12:20 am - 4:28 pmHAN-STL
52h 08m2 stops
$2,550ANA
Find Deal
Tue, Jul 2 - Mon, Jul 29
4:45 pm - 7:35 pmSTL-HAN
38h 50m2 stops
3:30 am - 9:59 pmHAN-STL
30h 29m2 stops
$2,625Qatar Airways
Find Deal
Tue, Jul 2 - Mon, Jul 29
1:45 pm - 10:15 pmSTL-HAN
44h 30m2 stops
11:35 pm - 4:28 pmHAN-STL
52h 53m3 stops
$2,875United Airlines
Find Deal
Tue, Jul 2 - Tue, Jul 30
6:08 am - 10:15 pmSTL-HAN
52h 07m3 stops
11:35 pm - 4:28 pmHAN-STL
52h 53m3 stops
$2,978United Airlines
Find Deal
Tue, Jul 2 - Tue, Jul 30
5:21 am - 9:50 pmSTL-HAN
28h 29m3 stops
11:20 pm - 10:58 pmHAN-STL
35h 38m3 stops
$4,509American Airlines
Find Deal
Fri, May 31 - Fri, Jun 14

Flights from St. Louis to Hanoi - Travel Insights & Trends

Get data-powered insights and trends into flights from St. Louis to Hanoi to help you find the cheapest flights, the best time to fly and much more.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from St. Louis to Hanoi, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from St. Louis to Hanoi is September, where tickets cost $1,207 on average. On the other hand, the most expensive months are June and April, where the average cost of tickets is $2,556 and $1,834 respectively.

How long does a flight from St. Louis to Hanoi take?

There are no direct flights from St. Louis to Hanoi. The quickest journey takes 25h 10m.

Good to know

Low season

July

High season

November

Cheapest flight

$639
Best time to beat the crowds with an average 3% drop in price.
Most popular time to fly with an average 13% increase in price.
Flight from St. Louis to Hanoi

When to book flights from St. Louis to Hanoi

Are your dates flexible? Find out the best times to travel from St. Louis to Hanoi based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from St. Louis to Hanoi

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

    In the last 3 days, the lowest price for a flight from St. Louis to Hanoi was $639 for a one-way ticket and $1,388 for a round-trip.

  • Do I need a passport to fly between St. Louis and Hanoi?

    Yes, you’ll need a passport to travel to Hanoi from St. Louis.

  • Which aircraft models fly most regularly from St. Louis to Hanoi?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from St. Louis to Hanoi?

    oneworld, and Star Alliance are the airline alliances operating flights between St. Louis and Hanoi, with oneworld being the most commonly used for this route.

  • Which is the best airline for flights from St. Louis to Hanoi, ANA or Japan Airlines?

    The two airlines most popular with KAYAK users for flights from St. Louis to Hanoi are ANA and Japan Airlines. With an average price for the route of $1,647 and an overall rating of 8.4, ANA is the most popular choice. Japan Airlines is also a great choice for the route, with an average price of $1,868 and an overall rating of 8.3.

  • How does KAYAK find such low prices on flights from St. Louis to Hanoi?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from St. Louis to Hanoi.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from St. Louis to Hanoi?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Hanoi from St. Louis is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from St. Louis to Hanoi?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Hanoi with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and HAN can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from St. Louis to Hanoi?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Hanoi from St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top 5 airlines serving from St. Louis to Hanoi

Need help choosing which airline to fly with from St. Louis to Hanoi? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to KAYAK reviews.
8.5
Korean AirOverall score based on 1239 reviews
85overall
88crew
83comfort
82food
86boarding
82entertainment
Airline reviews

Great crew, decent food Charging plugs were broken on both seats next to me. Only the USB port was available, and that charges, very, very slowly. Seat was also broken, it would not lock into position when reclining.

Read more about Korean Air

Great crew, decent food Charging plugs were broken on both seats next to me. Only the USB port was available, and that charges, very, very slowly. Seat was also broken, it would not lock into position when reclining.

Korean Air had great service and the Bibimbap dish was the best airplane food I’ve ever had. It was a long flight so in between the two meals they served customers could get Shin ramen. The flight attendants let my children use a pair of nice headphones for the flight and had earbuds and slippers for all the adults. The flight was long but the time passed by relatively quickly because they have many great shows in their entertainment TV. I watched the BTS Love Yourself and Speak Yourself concerts 💜

not too bad but not too great either. Service on all airlines declined ever since covid. Your Delta Stewardess are not that friendly at all. :-(

You did not put me on a Korean Air flight! so I do not have nothing to say

My flight was diverted to Atlanta and I was not given enough time. I paid my travel on April 23, 2023. It was originally Delta from Norfolk to NY, then Korean Air from NY all the way Philippines which is my final stop. Instead from Atlanta to Korea I flew Delta which is okay. Then Korea to Philippines, I flew Asiana Airlines. What I did not like, Ieagle did not sent me an email that my flight was change and so when I went to check in Wednesday the 10th, at 4:30 a.m they told me my flight was delayed at 6;00 p.m and diverted in Atlanta and I am flying Asiana from Korea to Philippines. I do not appreciate that Kayak or Ieagle chenge our flights 5 times and then last minute change again during my day of flight. I hope that you will not make any changes of my flight o Feb 15th because it has to be the same flight with my husband. That is the reason why we made the arrangements early on.

Wonderful cabin crew!!!!! Food was poor, in flight entertainment was just ok. They need to serve more water on a 15 hour flight--we were dehydrated and kept asking for water.

Going through security a third time to get on the next flight was again utterly ridiculous and unnecessary. We were in a International secure area once again and as far as I'm concerned should not have been put through the gears for absolutely no reason. The United States can get all the information they need from the travel itinerary, there was no need to be forced out of a secure area to personally interview everyone on a connecting flight to find out their US immigration status.

Flight arrived early, fantastic, since it is short flight, no food being served

Always fly with Korean Airlines. Best service great food. Nice and clean as always.

Crew was awesome, absolutely the best, Food was excellent also. Movie selection was mostly modern duds. However, I love Korean Airlines

Attentive crew, great service with regular rounds of drinks and trash collecting. Only complaint is the food, which was mediocre.

Japan airlines is excellent. I had a great flight with them, and they are the consummate professionals. I booked my flight through Kayak and they sent it on to Underpricer. That felt really scammy. My Oneworld number would not attach to the reservation and I could not choose a seat. I called Japan Airlines and got one but it was in the back. Later I drove to the airport and worked with the excellent agents there to find a better one. Later that day, I got a phone call from Underpricer trying to upsell me the option of choosing a seat. It felt like a Spirit Airlines level crappy move. The flight itself was exactly as nice as you would expect from JAL. The meal was good and the flight crew was awesome.

Liked the food. Needs improvement: 1) the flat bed was very hard and the set up was not at all passenger friendly 2) the announcement were impossible to understand even in English. 3) the flight information on the monitor was terrible it showed a airplane with no information like altitude, airspeed, heading. You could not zoom in or out to orient the aircraft to where you were in the flight. 4) movies were old and very limited as was the music selection.

This flight was operated by American Airlines. AA was completely unprepared for the crowds at DFW for Spring Break and were ridiculously understaffed. They had only three operating kiosks for self check-in, and ONE agent to handle hundreds (thousands?) of dropped off bags. She also had to do double duty to assist passengers at the kiosks. In comparison, flying on United Airlines at Christmastime was a much smoother experience.

Need new movies, a lots of them are 20-10 years old or older. It us a very long flight we need good entertainment. Please load more new movies!

It was one of the best experiences. The staff were amazing. JAL is my second favorite Asian Carrier I have flown on. Korean Air was my first. Thank you JAL for bringing me home safely and for such an amazing staff and service.

It was an outstanding flight and service. The only thing is the seat cushion for economy could be a little more comfortable. More cushion.

Although delayed leaving the crew were lovely, comfort of the seats was excellent. Cabin was a little too warm but overall the best economy flight we have taken

Comfortable flight since I had the entire row to myself. Food was good too.

I requested a vegetarian meal, and somehow that wasn’t processed from Japan airlines to the new carrier American Airlines when it was on the ticket. Don’t know if that was KAYAK or Japan air or American Airlines. But the crew scrounge together something for me and that was very good. Also I think American has the tiniest seats in the industry. It’s kind of annoying but it got me from .8 point B and now I’m at point B on the final point at LAX. I had to leave the airport and then go back through security to catch my next plane. I’ve never had to do that before. It was very annoying.

Carly the flight attendant was extremely helpful and very accommodating to passengers on the flight from what I noticed. Couldn't be more satisfied with the service and assistance from Delta's flight attendant, Thanks again Carly!!

I didn’t not like that I could not select my seat and ended up with the worse seat.

I didn’t like that I could not select my seat and was assigned a seat when I checked in at LAX

Delta did an awful job w logistics at DTW. Missed connection. We were there an hour early. SUCKED

Inflight entertainment stopped working as we taxi to runway and never worked again until landing and taxi to gate. Grrrr

Had to run to make it only to have the flight delayed to wait for all the late connectors Second drink service skipped up

Boarding was a sh!t show. JFK BOARDING was awful. The agent called three sections at a time Clogging the area then yelling at people to not block the walk way. How are you going to call delta one , premium select and comfort plus at once and the yell at highest paying passengers. Need to do a lot better and the flight attendants in the galley need to understand that their voices travel. They were talking about others and everyone in the cabin heard them

Uncomfortable seats on 14 hour flight. Mediocre food. On time and great crew.

Please see my lengthy description on MSP to Atlanta survey. Tailbone is killing me from old hard seats. Seat would not recline and were not near exit row. Entertainment did not work properly and couldn’t use. No audio and touch screen failed. 3 plus hours of discomfort in narrower seats than previous flight not in comfort plus. Very dissatisfied and deserve comfort plus charges refunds, at the very least, for both my wife and I. The plane needs to be retired. Please feel free to contact me directly for further details.

MSP to Atlanta was much better than Atlanta to St. Kitts. Paid $180 each for myself and wife for Delta comfort from Atlanta to St. Kitts. Seats were more narrow and obviously old and worn out. Tailbone is killing me. Seat would not recline. Seats behind reclined and we were not an exit row or in front of an exit row. Entertainment did not work in that the movie jumped forward and back and there was no audio. The plug in the arm rest was loose. Flight attendant tried “resetting” the video for my seat but no good. She never checked back. Someone else near me had the same issue. Touch screen was unresponsive. No where near as comfortable as MSP to Atlanta flight. 3 plus hrs. flight time without the basic amenities and not even remotely close to comfortable but paid for Comfort plus. I will be very disappointed if I have the same on my return “Comfort Plus” flight St. Kitts to Atlanta. At the very least my wife and I should be refunded for round trip “Comfort Plus” charges. Please feel free to contact me directly for more details.

Not impressed. Only allowed one carry on on such a long flight.

The flight was good but my neighbor had the vent open full power for the whole flight and because the air was blowing from the side instead of from the top and I got very cold and ended up with a sore throat.

Bad experience with the delay n long wait time for connecting flight after missing the connection flight from Doha.

Wore experience due to delay and took me 3 days to reach my destination.

All over with Qatar airlines my experience was really bad due to delays and then putting me on different airlines and after 8 hours of wait I had to listen to their is no plane to fly for another 24 hours. Wore experience ever.

Excellent will be flying again in May with Qatar. to Botswana.

Ultimate customer care humble and excellent service oriented crew , perfect timing maintained by the crew . My profound appreciation.

Asian Veng meal have Non Veg items which is not ok. Pure veg meals option are too less and they have inclusion of Vedgan and Lactos etc... which is taste less

Very bad. We booked 8 months in advance for 2 people but couldn’t get seats together. Food was so bad I couldn’t even eat.

Okay not so good or great. The flight operated by Indigo is worst from boarding to luggage handling and food. Damaged one luggage and delayed another luggage. Still did not get it, since 2 days.

The flight was scheduled to depart DCA at 12:30 pm but was delayed twice on the ground so that we were finally scheduled to depart at around 4:00 pm. Once we boarded, it was announced that takeoff would be delayed again to fix a hydraulic problem which delayed our eventual takeoff until around 5:00 pm. Once we departed, it was a smooth flight back to ORD. We did not get any explanation about what caused the original significant delay. In my experience, this happens frequently with AA.

Plane was good but was delayed. probably not AA fault but caused a 1 hour delay. Seating was cramped.

Flight was good and arrived a little early. Very good.

Gossipy flight attendants talked the whole flight about bar hopping and dating.

Turbulence was bad and flight attendants gossiped about going to the bar and dating. Could have better awareness.

When we exited the plane our wheelchair wasn’t there. The Pilot and co pilot were so nice and helped us locate it. Great service.

Didn't like the 6 hour delay as it caused me to miss all of my connections. Still, I did get home safely 14 hours late but exhausted.

New ridiculous policy by american destroyed my allegiance to american. As a million miler with american, I expected it would be easy to get on an earlier flight when I got to airport earlier than expected, and save a five hour layover. WRONG. The online app would not let me switch flights, So I called, and was promised a call back in 90 minutes. HAH! The customer service desk at DCA said “we no longer have access to changing a flight on our screens. If the app couldn’t do it, I should send a letter to American, but there’s nothing else possible!”

We were delayed bc ground crew gave the flight crew the wrong paperwork. We taxiied to the runway then back to the gate to get the correct paperwork that no one bothered reviewing the first time we pushed back. Boarding was rude and stressful like it always is. Gate agents and flight attendants are all over 55 years of age, embittered by years of underpayment From AA leading to their passive agressive bitchiness for no reason.

Same basket of unhealthy prepackaged snacks (junk food) which was depleted by the time it got to my row!!

Book cheap flights from St. Louis to Hanoi

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from St. Louis to Hanoi found on KAYAK in the last 72 hours.
8/26Mon
2 stops
36h 35mSTL-HAN
$639
8/27Tue
2 stopsCathay Pacific
52h 25mSTL-HAN
$698
8/31Sat
2 stops
36h 35mSTL-HAN
$699
8/27Tue
3 stops
38h 35mSTL-HAN
$739
8/26Mon
3 stops
42h 58mSTL-HAN
$747
8/31Sat
3 stops
38h 10mSTL-HAN
$842

Search by stops

Search by airline

Search by price

St. Louis - Hanoi Flights

Departure:

St. Louis (STL)United States

Destination:

Hanoi (HAN)Vietnam

Return flight deals:

Hanoi - St. Louis

Cabin classes:

Browse destinations: