Find flights
Travel Guide

HK$3,892+ 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 3-3. Fares are subject to change and may not be available on all flights or dates of travel.
— STL
15 Mar — 22 Mar1
1 adult
1 adult, Economy, 0 bags

Flights to St. Louis in 2026

Enter your travel dates to find the best prices.

Cheapest flights to St. Louis
Explore the most affordable flight options available to St. Louis. Find the lowest fares based on data from user searches, with prices last updated on 13 February 2026.

Wed 1-416:05
HKG
-
STL
1 stop19h 53m
Cathay Pacific
Sun 5-418:50
STL
-
HKG
1 stop21h 20m
Cathay Pacific
Deal found 11-2HK$8,481
Wed 1-412:40
HKG
-
STL
2 stops21h 14m
United Airlines
Sun 5-419:05
STL
-
HKG
1 stop34h 50m
United Airlines
Deal found 10-2HK$11,357
Wed 1-409:45
HKG
-
STL
2 stops42h 39m
Air Canada
Sun 5-411:15
STL
-
HKG
2 stops29h 00m
Air Canada
Deal found 10-2HK$11,943

Find flight deals to St. Louis

Find the latest flights to St. Louis in 2026, 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 13 February 2026.

Return from

HK$8,481

One-way from

HK$3,892
Cathay Pacific
  • Cathay Pacific
  • 1-4-5-4
  • 2 total stops
  • 41h 13m total
  • Hong Kong to St. Louis
Search Deals
3-3
  • 3-3
  • 3 total stops
  • 34h 13m 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 13 February 2026.
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

18:50-05:10

1 stop21h 20m

HK$8,481

Hong KongSt. Louis

HKG - STL

HKGSTL

Hong Kong Intl

Wed 1-4

12:40-20:54

2 stops21h 14m

Lambert-St Louis

Sun 5-4

19:05-18:55

1 stop34h 50m

HK$11,357

Hong KongSt. Louis

HKG - STL

HKGSTL

Hong Kong Intl

Wed 1-4

09:45-15:24

2 stops42h 39m

Lambert-St Louis

Sun 5-4

11:15-05:15

2 stops29h 00m

HK$11,943

Hong KongSt. Louis

HKG - STL

HKGSTL

Hong Kong Intl

Tue 3-3

19:40-15:53

3 stops34h 13m

HK$3,892

Hong KongSt. Louis

HKG - STL

HKGSTL

Hong Kong Intl

Tue 3-3

11:20-13:51

2 stops40h 31m

HK$4,064

Hong KongSt. Louis

HKG - STL

HKGSTL

Hong Kong Intl

Sat 28-2

19:55-06:51

3 stops48h 56m

HK$4,815

Hong KongSt. Louis

HKG - STL

HKGSTL

Hong Kong Intl

Sun 26-7

13:00-19:13

3 stops43h 13m

HK$5,784

Hong KongSt. Louis

HKG - STL

HKGSTL

Hong Kong Intl

Tue 3-3

12:35-23:59

1 stop25h 24m

HK$7,058

Hong KongSt. Louis

HKG - STL

HKGSTL

Hong Kong Intl

Sun 19-7

16:05-23:44

1 stop20h 39m

HK$7,121

Flights are sorted by cheapest return flights first.

Deals found on 11-2

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Search flights to St. Louis by cabin class

Find flights to St. Louis, based on your preferred cabin class, be it economy, premium economy, business, or first class.
First Class
Business Class
Premium Economy Class
Economy class

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights to St. Louis. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets to St. Louis?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights to St. Louis for you. Better yet — we are completely free to use.

Can Cheapflights find flights to St. Louis with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights to St. Louis flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights to St. Louis become cheaper?

Not ready to book yet? You can track prices for flights to St. Louis on Cheapflights with our Price Alerts feature and get notified when better prices are available.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book With Flexibility

Our users can plan ahead with confidence and find flights with no change fees.

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.