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$434+ Cheap flights from St. Louis (STL) to Hong Kong

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 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
STL — HKG
Aug 25 — Sep 11
Mon 8/25
Mon 9/1
1 adult, Economy
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Cheap flight deals from St. Louis to Hong Kong

Keep the following information in mind while searching for St. Louis to Hong Kong flight deals. Data was last updated August 20, 2025.

Round-trip from

$849
(Air Canada)

One-way from

$434
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$1,069
From Lambert-St Louis to Hong Kong
Search Deals
One-way flight from Lambert-St Louis to Hong Kong
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($144 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($19 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from St. Louis to Hong Kong

Cheapest flights from St. Louis to Hong Kong
Explore the most affordable flight options available from St. Louis to Hong Kong. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 20, 2025.

This Air Canada deal was found by Cheapflights users on 8/19. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/251:30 pmSTL - HKG
2 stops37h 35mAir Canada
Tue 9/306:00 pmHKG - STL
2 stops34h 18mAir Canada
Deal found 8/19$814
This Air Canada deal was found by Cheapflights users on 8/18. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/31:30 pmSTL - HKG
2 stops26h 05mAir Canada
Sun 9/76:00 pmHKG - STL
2 stops38h 57mAir Canada
Deal found 8/18$849
This Air Canada deal was found by Cheapflights users on 8/18. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/24:05 pmSTL - HKG
2 stops35h 00mAir Canada
Thu 10/96:00 pmHKG - STL
2 stops38h 57mAir Canada
Deal found 8/18$856
This Mytrip deal was found by Cheapflights users on 8/19. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/254:00 pmSTL - HKG
2 stops35h 05mMultiple Airlines
Mon 9/292:35 amHKG - STL
2 stops30h 22mMultiple Airlines
Deal found 8/19$937
This United Airlines deal was found by Cheapflights users on 8/19. 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 8/255:49 pmSTL - HKG
1 stop22h 11mUnited Airlines
Tue 9/309:15 amHKG - STL
2 stops25h 45mUnited Airlines
Deal found 8/19$948
This United Airlines deal was found by Cheapflights users on 8/18. 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 9/35:49 pmSTL - HKG
1 stop22h 11mUnited Airlines
Sun 9/72:35 pmHKG - STL
2 stops46h 09mUnited Airlines
Deal found 8/18$949
This United Airlines deal was found by Cheapflights users on 8/18. 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.
Thu 10/23:23 pmSTL - HKG
2 stops24h 37mUnited Airlines
Thu 10/911:15 amHKG - STL
3 stops23h 45mUnited Airlines
Deal found 8/18$952
This FlightHub deal was found by Cheapflights users on 8/18. 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.
Sat 10/254:05 pmSTL - HKG
2 stops60h 35mAir Canada
Fri 10/317:25 pmHKG - STL
2 stops58h 04mAir Canada
Deal found 8/18$978
This Mytrip deal was found by Cheapflights users on 8/18. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/31:30 pmSTL - HKG
2 stops26h 05mMultiple Airlines
Sat 9/62:35 amHKG - STL
2 stops30h 22mMultiple Airlines
Deal found 8/18$984
This United Airlines deal was found by Cheapflights users on 8/20. 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.
Sat 10/45:35 pmSTL - HKG
1 stop22h 25mUnited Airlines
Sat 10/1111:15 amHKG - STL
1 stop18h 39mUnited Airlines
Deal found 8/20$1,038
This United Airlines deal was found by Cheapflights users on 8/18. 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.
Sat 10/258:25 amSTL - HKG
2 stops32h 20mUnited Airlines
Fri 10/3110:35 amHKG - STL
1 stop18h 52mUnited Airlines
Deal found 8/18$1,042

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated August 20, 2025.
Use the filters below to find and compare flights from St. Louis to Hong Kong that are best for you.

Fly from

St. Louis

Fly to

Hong Kong

Route

Depart

Return

Price

St. LouisHong Kong

STL - HKG

STLHKG

Lambert-St Louis

Wed 9/3

1:30 pm-4:35 am

2 stops26h 05m

Hong Kong Intl

Sun 9/7

6:00 pm-7:57 pm

2 stops38h 57m

$849

St. LouisHong Kong

STL - HKG

STLHKG

Lambert-St Louis

Thu 10/2

4:05 pm-4:05 pm

2 stops35h 00m

Hong Kong Intl

Thu 10/9

6:00 pm-7:57 pm

2 stops38h 57m

$856

St. LouisHong Kong

STL - HKG

STLHKG

Lambert-St Louis

Thu 10/2

5:00 am-4:45 pm

2 stops22h 45m

Hong Kong Intl

Thu 10/9

11:15 am-4:54 pm

1 stop18h 39m

$948

St. LouisHong Kong

STL - HKG

STLHKG

Lambert-St Louis

Wed 9/3

5:49 pm-5:00 am

1 stop22h 11m

Hong Kong Intl

Sun 9/7

2:35 pm-11:44 pm

2 stops46h 09m

$949

St. LouisHong Kong

STL - HKG

STLHKG

Lambert-St Louis

Sat 10/25

4:05 pm-5:40 pm

2 stops60h 35m

Hong Kong Intl

Fri 10/31

7:25 pm-4:29 pm

2 stops58h 04m

$978

St. LouisHong Kong

STL - HKG

STLHKG

Lambert-St Louis

Wed 9/3

1:30 pm-4:35 am

2 stops26h 05m

Hong Kong Intl

Sat 9/6

2:35 am-7:57 pm

2 stops30h 22m

$984

St. LouisHong Kong

STL - HKG

STLHKG

Lambert-St Louis

Sat 10/4

1:40 pm-5:00 am

2 stops26h 20m

Hong Kong Intl

Sat 10/11

11:15 am-4:54 pm

1 stop18h 39m

$1,038

St. LouisHong Kong

STL - HKG

STLHKG

Lambert-St Louis

Sat 10/25

8:25 am-5:45 am

2 stops32h 20m

Hong Kong Intl

Fri 10/31

10:35 am-4:27 pm

1 stop18h 52m

$1,042

St. LouisHong Kong

STL - HKG

STLHKG

Lambert-St Louis

Mon 9/15

4:00 pm-10:10 am

3 stops53h 10m

$434

St. LouisHong Kong

STL - HKG

STLHKG

Lambert-St Louis

Tue 9/16

7:55 pm-12:35 am

3 stops39h 40m

$442

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/18

Showing 1-10 of 16 results
1
2

Best time to book a flight from St. Louis to Hong Kong

Have a flexible travel schedule? Discover the best time to fly to Hong Kong 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 Hong Kong

What is the cheapest month to book a flight from St. Louis to Hong Kong?

Currently, September is the cheapest month in which you can book a flight from St. Louis to Hong Kong (average of $952). Flying from St. Louis to Hong Kong in December is currently the most expensive (average of $1,629). 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.

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

Find hourly flight availability from St. Louis to Hong Kong. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 20, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 23% on flights from St. Louis to Hong Kong by exploring options for tickets in the evening.

Reviews of airlines servicing Hong Kong

Get insights into the airlines that provide service to Hong Kong. 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 Hong Kong. Reviews last updated August 20, 2025.
Get a feel of what it's like to fly with Cathay Pacific, United Airlines, and Air Canada from St. Louis to Hong Kong by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Cathay Pacific
7.6
Good
972 reviews

Overall

7.6

Crew

8.1

Food

7.3

Comfort

7.6

Boarding

7.9

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

anish,Aug 2025

YYZ - HKG

Overall journey was good. The economy seats on this airbus a350 was the worst . Too narrow and no underthigh support . My next journey from Hongkong to kathmandu was better as the economy seats on airbus a330 was a lot better than on this plane . Cathy should make a note on this . The long haul flights should have at least comfy seats compared to short flights from Hongkong to ktm
Cathay Pacific
7.6
Good
972 reviews
Cathay Pacific
7.6
Good
972 reviews

Overall

7.6

Crew

8.1

Food

7.3

Comfort

7.6

Boarding

7.9

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

anish,Aug 2025

YYZ - HKG

Overall journey was good. The economy seats on this airbus a350 was the worst . Too narrow and no underthigh support . My next journey from Hongkong to kathmandu was better as the economy seats on airbus a330 was a lot better than on this plane . Cathy should make a note on this . The long haul flights should have at least comfy seats compared to short flights from Hongkong to ktm
United Airlines
7.4
Good
8,928 reviews
Cathay Pacific
7.6
Good
972 reviews

Overall

7.6

Crew

8.1

Food

7.3

Comfort

7.6

Boarding

7.9

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

anish,Aug 2025

YYZ - HKG

Overall journey was good. The economy seats on this airbus a350 was the worst . Too narrow and no underthigh support . My next journey from Hongkong to kathmandu was better as the economy seats on airbus a330 was a lot better than on this plane . Cathy should make a note on this . The long haul flights should have at least comfy seats compared to short flights from Hongkong to ktm
Air Canada
7.1
Good
10,000 reviews
Cathay Pacific
7.6
Good
972 reviews

Overall

7.6

Crew

8.1

Food

7.3

Comfort

7.6

Boarding

7.9

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

anish,Aug 2025

YYZ - HKG

Overall journey was good. The economy seats on this airbus a350 was the worst . Too narrow and no underthigh support . My next journey from Hongkong to kathmandu was better as the economy seats on airbus a330 was a lot better than on this plane . Cathy should make a note on this . The long haul flights should have at least comfy seats compared to short flights from Hongkong to ktm

Related info for your journey

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

  • What airport do you fly from for flights from St. Louis to Hong Kong?

    Lambert-St Louis (STL) is the airport you will fly out of if you book a flight from St. Louis to Hong Kong. It is only a 12.7 mi journey to Lambert-St Louis (STL) from St. Louis’s city center.

  • How long is the flight from St. Louis to Hong Kong?

    There are many flights that can get you from St. Louis to Hong Kong in 22h 45m. Fly via Air Canada or United Airlines to get the fastest option. The distance from St. Louis to Hong Kong is about 7929 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    Our cheapest airline available from St. Louis to Hong Kong is Air Canada. Our recent data shows that you can find tickets from as low as $733 on this airline. Additional options worth looking into are United Airlines and Cathay Pacific, starting at $1,079 and $1,331 round-trip. Users have found that Air Canada is 42% cheaper than the other options available to this destination.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from St. Louis to Hong Kong 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 Hong Kong?

    Currently, September is the cheapest month in which you can book a flight from St. Louis to Hong Kong (average of $952). Flying from St. Louis to Hong Kong in December is currently the most expensive (average of $1,629). 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

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Top 3 airlines flying from St. Louis to Hong Kong

Discover the top 3 airlines that operate flights from St. Louis to Hong Kong. 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 August 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$733Average$859FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$1,079Average$1,277FlexibilityNo cancel feeOn-time69%
Cathay PacificCheapest$1,331Average$1,483FlexibilityNo cancel feeOn-time72%

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