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HK$3,730+ Cheap flights to St. Louis

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 21-1. Fares are subject to change and may not be available on all flights or dates of travel.
— STL
28 Jan — 4 Feb1
1 adult
1 adult, Economy, 0 bags

Flights to St. Louis in 2025

Enter your travel dates to find the best prices.

Best flights to St. Louis
Discover carefully curated flight deals to St. Louis that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 29 December 2025.

Wed 1-416:05HKG - STL
1 stop19h 53mCathay Pacific
Sun 5-418:50STL - HKG
1 stop20h 45mCathay Pacific
Deal found 28-12HK$8,470
Tue 3-200:25HKG - STL
2 stops33h 48mQatar Airways
Sun 8-211:05STL - HKG
2 stops44h 35mQatar Airways
Deal found 27-12HK$9,620
Fri 13-220:25HKG - STL
2 stops52h 11mAir Canada
Fri 20-218:45STL - HKG
2 stops57h 55mAir Canada
Deal found 29-12HK$10,047
Fri 13-216:30HKG - STL
1 stop20h 28mMultiple Airlines
Fri 20-207:00STL - HKG
2 stops39h 00mMultiple Airlines
Deal found 29-12HK$10,754
Wed 1-411:45HKG - STL
2 stops24h 11mUnited Airlines
Sun 5-419:05STL - HKG
1 stop20h 55mUnited Airlines
Deal found 28-12HK$11,951
Fri 13-216:30HKG - STL
1 stop20h 28mCathay Pacific
Fri 20-218:50STL - HKG
1 stop20h 45mCathay Pacific
Deal found 29-12HK$9,332
Wed 4-216:30HKG - STL
1 stop20h 29mCathay Pacific
Sun 8-211:05STL - HKG
1 stop19h 25mCathay Pacific
Deal found 27-12HK$9,721
Wed 1-419:40HKG - STL
2 stops41h 12mQatar Airways
Sun 5-409:20STL - HKG
2 stops47h 35mQatar Airways
Deal found 28-12HK$10,770
Wed 4-211:25HKG - STL
2 stops23h 48mUnited Airlines
Sun 8-217:00STL - HKG
1 stop23h 45mUnited Airlines
Deal found 27-12HK$11,951
Sun 18-122:45HKG - STL
2 stops32h 10mUnited Airlines
Fri 23-106:45STL - HKG
1 stop22h 35mUnited Airlines
Deal found 29-12HK$12,650

Find flight deals to St. Louis

Find the latest flights to St. Louis in 2025, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 70,647 searches and data was last updated on 29 December 2025.

Return from

HK$8,470

One-way from

HK$3,730
Cathay Pacific
  • Cathay Pacific
  • 1-4-5-4
  • 2 total stops
  • 40h 38m total
  • Hong Kong to St. Louis
Search Deals
21-1
  • 21-1
  • 3 total stops
  • 39h 21m total
  • Hong Kong to St. Louis
Search Deals

Cheapflights Fare Finder

 
Locate flights to St. Louis that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 70,647 searches and data was last updated on 29 December 2025.
Use the filters below to find and compare flights to St. Louis that are best for you.

Fly from

Hong Kong

Route

Departure

Return

Price

Hong KongSt. Louis

HKG - STL

HKGSTL

Hong Kong Intl

Wed 1-4

16:05-22:58

1 stop19h 53m

Lambert-St Louis

Sun 5-4

18:50-04:35

1 stop20h 45m

HK$8,470

Hong KongSt. Louis

HKG - STL

HKGSTL

Hong Kong Intl

Fri 13-2

16:30-22:58

1 stop20h 28m

Lambert-St Louis

Fri 20-2

18:50-05:35

1 stop20h 45m

HK$9,332

Hong KongSt. Louis

HKG - STL

HKGSTL

Hong Kong Intl

Tue 3-2

00:25-20:13

2 stops33h 48m

Lambert-St Louis

Sun 8-2

11:05-21:40

2 stops44h 35m

HK$9,620

Hong KongSt. Louis

HKG - STL

HKGSTL

Hong Kong Intl

Wed 4-2

16:30-22:59

1 stop20h 29m

Lambert-St Louis

Sun 8-2

11:05-20:30

1 stop19h 25m

HK$9,721

Hong KongSt. Louis

HKG - STL

HKGSTL

Hong Kong Intl

Fri 13-2

20:25-10:36

2 stops52h 11m

Lambert-St Louis

Fri 20-2

18:45-18:40

2 stops57h 55m

HK$10,047

Hong KongSt. Louis

HKG - STL

HKGSTL

Hong Kong Intl

Fri 13-2

16:30-22:58

1 stop20h 28m

Lambert-St Louis

Fri 20-2

07:00-12:00

2 stops39h 00m

HK$10,754

Hong KongSt. Louis

HKG - STL

HKGSTL

Hong Kong Intl

Wed 1-4

19:40-23:52

2 stops41h 12m

Lambert-St Louis

Sun 5-4

09:20-21:55

2 stops47h 35m

HK$10,770

Hong KongSt. Louis

HKG - STL

HKGSTL

Hong Kong Intl

Wed 1-4

11:45-22:56

2 stops24h 11m

Lambert-St Louis

Sun 5-4

19:05-05:00

1 stop20h 55m

HK$11,951

Hong KongSt. Louis

HKG - STL

HKGSTL

Hong Kong Intl

Wed 4-2

11:25-21:13

2 stops23h 48m

Lambert-St Louis

Sun 8-2

17:00-06:45

1 stop23h 45m

HK$11,951

Hong KongSt. Louis

HKG - STL

HKGSTL

Hong Kong Intl

Sun 18-1

22:45-16:55

2 stops32h 10m

Lambert-St Louis

Fri 23-1

06:45-19:20

1 stop22h 35m

HK$12,650

Flights are sorted by cheapest return flights first.

Deals found on 28-12

Showing 1-10 of 18 results
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Best time to book a flight to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis with our price prediction graph.
Estimated return 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 to St. Louis

Rainfall in St. Louis by month

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

In terms of precipitation, rainfall in St. Louis ranges from 56.0 - 119.0 mm per month. May is typically the wettest month, when rainfall can reach 119.0 mm. February is typically the driest time to visit St. Louis when rainfall is around 56.0 mm.

Temperature in St. Louis by month

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

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 27.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 0.0 C).

How long is the flight to St. Louis?

On average, a flight from Hong Kong to St. Louis takes 19 hours 53 minutes. Flights to St. Louis from other popular cities in Hong Kong will vary in length. Below are a few examples of popular routes and their flight times.

FAQs about flying to St. Louis

  • What airport do you fly into for flights to St. Louis?

    Lambert-St Louis (STL), located 20.4 km from the city centre, is the airport you fly into when you book flights to St. Louis.

  • Can I find cheaper flights to St. Louis if I am willing to have stopovers?

    Yes, flights with stopovers are often cheaper than direct flights. Keep an eye out for flight deals to St. Louis on Cheapflights that require 1 or 2 stops for potential cost savings.

  • Does Lambert-St Louis have rental cars?

    Yes. Those touching down at Lambert-St Louis can take advantage of the car hire services offered upon their arrival.

  • Are there hotels close to Lambert-St Louis?

    Yes. Lambert-St Louis has hotels nearby for those requiring accommodations. Hampton Inn St. Louis-Airport is the closest property to Lambert-St Louis (0.0 km away from Lambert-St Louis).

See more FAQs

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How does Cheapflights help users find flights to St. Louis?

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