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Cheap flights from St. Louis to Hong Kong from $408

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Hong Kong departing on 1/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from St. Louis to Hong Kong

Cheap round-trip flights

Enter your travel dates to find the best prices.
Air Canada Logo
4:05 pm - 6:40 pm
STL
-
HKG
60h 35m2 stops
Air Canada Logo
8:25 pm - 3:29 pm
HKG
-
STL
33h 04m2 stops
$796Air Canada
Sun, Jan 18 - Thu, Jan 22
Air Canada Logo
4:05 pm - 6:40 pm
STL
-
HKG
36h 35m2 stops
Air Canada Logo
8:25 pm - 10:58 pm
HKG
-
STL
40h 33m2 stops
$802Air Canada
Mon, Jan 12 - Mon, Jan 26
Air Canada Logo
1:30 pm - 5:10 am
STL
-
HKG
50h 40m2 stops
Air Canada Logo
9:45 am - 3:16 pm
HKG
-
STL
42h 31m2 stops
$809Air Canada
Sat, May 9 - Tue, May 26
Air Canada Logo
11:25 am - 5:10 am
STL
-
HKG
28h 45m2 stops
Air Canada Logo
9:45 am - 3:16 pm
HKG
-
STL
42h 31m2 stops
$810Air Canada
Tue, Apr 28 - Tue, May 5
Air Canada Logo
9:10 am - 5:10 am
STL
-
HKG
31h 00m2 stops
Air Canada Logo
9:45 am - 3:16 pm
HKG
-
STL
42h 31m2 stops
$812Air Canada
Tue, May 12 - Wed, Jun 17
Air Canada Logo
1:30 pm - 5:10 am
STL
-
HKG
50h 40m2 stops
Air Canada Logo
9:45 am - 6:25 pm
HKG
-
STL
45h 40m2 stops
$815Air Canada
Tue, May 12 - Thu, Jun 11
Air Canada Logo
1:30 pm - 5:10 am
STL
-
HKG
50h 40m2 stops
Air Canada Logo
9:45 am - 6:18 pm
HKG
-
STL
45h 33m2 stops
$816Air Canada
Sat, May 9 - Wed, Jun 17
Air Canada Logo
9:10 am - 5:10 am
STL
-
HKG
55h 00m2 stops
Air Canada Logo
9:45 am - 6:18 pm
HKG
-
STL
45h 33m2 stops
$819Air Canada
Sun, May 10 - Wed, Jun 17
Air Canada Logo
11:25 am - 5:10 am
STL
-
HKG
28h 45m2 stops
Air Canada Logo
9:45 am - 3:24 pm
HKG
-
STL
42h 39m2 stops
$820Air Canada
Tue, Mar 31 - Tue, Apr 7
Air Canada Logo
4:05 pm - 6:40 pm
STL
-
HKG
60h 35m2 stops
Air Canada Logo
8:25 pm - 10:58 pm
HKG
-
STL
40h 33m2 stops
$852Air Canada
Mon, Jan 12 - Sat, Jan 31

Air Canada flights from St. Louis to Hong Kong

Our best Air Canada deals on St. Louis to Hong Kong flight tickets
Air Canada
Jan 18
STL4:05 pmLambert-St Louis
60h 35m
2 stops
HKG6:40 pmHong Kong Intl
Jan 22
HKG8:25 pmHong Kong Intl
33h 04m
2 stops
STL3:29 pmLambert-St Louis
$796
Find similar
Air Canada
Jan 12
STL4:05 pmLambert-St Louis
36h 35m
2 stops
HKG6:40 pmHong Kong Intl
Jan 26
HKG8:25 pmHong Kong Intl
40h 33m
2 stops
STL10:58 pmLambert-St Louis
$802
Find similar
Air Canada
May 9
STL1:30 pmLambert-St Louis
50h 40m
2 stops
HKG5:10 amHong Kong Intl
May 26
HKG9:45 amHong Kong Intl
42h 31m
2 stops
STL3:16 pmLambert-St Louis
$809
Find similar

United Airlines flights from St. Louis to Hong Kong

Our best United Airlines deals on St. Louis to Hong Kong flight tickets
United Airlines
Jan 18
STL5:00 pmLambert-St Louis
53h 55m
2 stops
HKG12:55 pmHong Kong Intl
Jan 22
HKG10:35 amHong Kong Intl
19h 07m
1 stop
STL3:42 pmLambert-St Louis
$994
Find similar
United Airlines
Feb 17
STL4:30 pmLambert-St Louis
24h 30m
2 stops
HKG7:00 amHong Kong Intl
Mar 3
HKG10:35 amHong Kong Intl
25h 39m
3 stops
STL10:14 pmLambert-St Louis
$1,005
Find similar
United Airlines
Mar 31
STL7:06 pmLambert-St Louis
20h 54m
1 stop
HKG5:00 amHong Kong Intl
Apr 6
HKG10:30 pmHong Kong Intl
31h 22m
2 stops
STL4:52 pmLambert-St Louis
$1,031
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Hong Kong 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, momondo users made 832,500 searches. Data last updated December 5, 2025.
Use the filters below to find and compare flights from St. Louis to Hong Kong that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisHong Kong

STL - HKG

STLHKG

Lambert-St Louis

Sun 1/18

4:05 pm-6:40 pm

2 stops60h 35m

Hong Kong Intl

Thu 1/22

8:25 pm-3:29 pm

2 stops33h 04m

$796

St. LouisHong Kong

STL - HKG

STLHKG

Lambert-St Louis

Mon 1/12

4:05 pm-6:40 pm

2 stops36h 35m

Hong Kong Intl

Mon 1/26

8:25 pm-10:58 pm

2 stops40h 33m

$802

St. LouisHong Kong

STL - HKG

STLHKG

Lambert-St Louis

Sat 5/9

1:30 pm-5:10 am

2 stops50h 40m

Hong Kong Intl

Tue 5/26

9:45 am-3:16 pm

2 stops42h 31m

$809

St. LouisHong Kong

STL - HKG

STLHKG

Lambert-St Louis

Tue 4/28

11:25 am-5:10 am

2 stops28h 45m

Hong Kong Intl

Tue 5/5

9:45 am-3:16 pm

2 stops42h 31m

$810

St. LouisHong Kong

STL - HKG

STLHKG

Lambert-St Louis

Tue 5/12

9:10 am-5:10 am

2 stops31h 00m

Hong Kong Intl

Wed 6/17

9:45 am-3:16 pm

2 stops42h 31m

$812

St. LouisHong Kong

STL - HKG

STLHKG

Lambert-St Louis

Tue 5/12

1:30 pm-5:10 am

2 stops50h 40m

Hong Kong Intl

Thu 6/11

9:45 am-6:25 pm

2 stops45h 40m

$815

St. LouisHong Kong

STL - HKG

STLHKG

Lambert-St Louis

Sat 5/9

1:30 pm-5:10 am

2 stops50h 40m

Hong Kong Intl

Wed 6/17

9:45 am-6:18 pm

2 stops45h 33m

$816

St. LouisHong Kong

STL - HKG

STLHKG

Lambert-St Louis

Sun 5/10

9:10 am-5:10 am

2 stops55h 00m

Hong Kong Intl

Wed 6/17

9:45 am-6:18 pm

2 stops45h 33m

$819

St. LouisHong Kong

STL - HKG

STLHKG

Lambert-St Louis

Tue 3/31

11:25 am-5:10 am

2 stops28h 45m

Hong Kong Intl

Tue 4/7

9:45 am-3:24 pm

2 stops42h 39m

$820

St. LouisHong Kong

STL - HKG

STLHKG

Lambert-St Louis

Mon 1/12

4:05 pm-6:40 pm

2 stops60h 35m

Hong Kong Intl

Sat 1/31

8:25 pm-10:58 pm

2 stops40h 33m

$852

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Hong Kong from

How to get the cheapest flight ticket from St. Louis to Hong Kong

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between St. Louis and Hong Kong?

What is the cheapest month to fly to Hong Kong?

The month of April is, on average, the cheapest month to fly to Hong Kong from St. Louis, with most prices found around $859. The month of October is another great option to travel to Hong Kong, with average flight prices from St. Louis averaging around $1,072.

What is the cheapest day to depart on your flight to Hong Kong?

The cheapest day to depart from St. Louis to Hong Kong is on a Sunday. Travelers who choose to depart for Hong Kong on a Sunday will often find tickets for as low as $1,293. The most expensive day to fly to Hong Kong is Friday, with ticket prices averaging around $1,955.

Can stopping save me money on St. Louis to Hong Kong flights?

You could potentially save up to 29% on your flight if you consider stops on a St. Louis to Hong Kong flight.

When to book flights from St. Louis to Hong Kong

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Hong Kong according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap St. Louis to Hong Kong (STL to HKG) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Hong Kong

Fastest flight time

22h 08m

Direct flights

None
The fastest flight from St. Louis to Hong Kong takes 22h 08m
There are no direct flights from St. Louis to Hong Kong. There are no popular flight routes from St. Louis to Hong Kong.
Search flight deals

  • How far is Lambert-St Louis to Hong Kong Intl by plane?

    The straight-line distance from Lambert-St Louis to Hong Kong Intl is 7933.7 mi. 19h 25m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Hong Kong Intl Airport?

    Prices for flights from Lambert-St Louis Airport to Hong Kong Intl Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to Hong Kong Intl Airport?

  • How old do you have to be to fly from Lambert-St Louis Airport to Hong Kong Intl Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Hong Kong Intl Airport.

  • What documentation or ID do you need to fly to Hong Kong Intl Airport?

    The necessary travel and health documents for your Hong Kong Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from St. Louis to Hong Kong?

Best airlines flying from St. Louis to Hong Kong

Compare and see reviews for airlines that fly from St. Louis to Hong Kong with momondo
Airline
Rating
Free Cancellation
Price
Air CanadaPriceFrom $733Free CancellationRating
7.1
10,502 reviews
Search Air Canada flights
United AirlinesPriceFrom $1,179Free CancellationRating
7.4
9,064 reviews
Search United Airlines flights
Cathay PacificPriceFrom $1,331Free CancellationRating
7.6
1,084 reviews
Search Cathay Pacific flights

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Hong Kong?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Hong Kong from St. Louis.

Can I find flights from St. Louis to Hong Kong with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for St. Louis to Hong Kong flights to just show those with flexible booking policies.

How can momondo help me find flights from St. Louis to Hong Kong?

Once all potential St. Louis to Hong Kong flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from St. Louis to Hong Kong right now. Can momondo alert me if prices change?

If you are not ready to book a flight from St. Louis to Hong Kong now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Hong Kong and let you know when they change.

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Airlines are sorted and displayed according to clicks in the past 7 days on momondo
United Airlines
Cathay Pacific
Air Canada