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Kathmandu

$565+ Cheap flights from St. Louis (STL) to Kathmandu (KTM)

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 — KTM
Aug 25 — Sep 11
Mon 8/25
Mon 9/1
1 adult, Economy
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Cheap flight deals from St. Louis to Kathmandu

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Kathmandu (KTM). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated August 20, 2025.

Round-trip from

$1,462
(FlightHub)

One-way from

$565
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$1,521
From Lambert-St Louis to Kathmandu Tribhuvan
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One-way flight from Lambert-St Louis to Kathmandu Tribhuvan
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Highest demand for flights based on searches. 10% potential increase in price ($198 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($75 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 Kathmandu

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

This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/195:28 amSTL - KTM
2 stops42h 02mQatar Airways
Fri 10/177:05 pmKTM - STL
2 stops39h 34mQatar Airways
Deal found 8/19$1,501
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/25:28 amSTL - KTM
2 stops48h 32mQatar Airways
Thu 10/911:30 amKTM - STL
2 stops47h 11mQatar Airways
Deal found 8/18$1,557
This Qatar Airways 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/33:59 pmSTL - KTM
2 stops39h 06mQatar Airways
Tue 10/77:05 pmKTM - STL
2 stops36h 06mQatar Airways
Deal found 8/19$1,642
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/235:56 amSTL - KTM
2 stops52h 19mCathay Pacific
Wed 3/411:15 pmKTM - STL
2 stops34h 14mCathay Pacific
Deal found 8/19$1,745
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2211:14 amSTL - KTM
2 stops47h 01mCathay Pacific
Tue 3/311:15 pmKTM - STL
2 stops30h 26mCathay Pacific
Deal found 8/19$1,762
This Gurufare 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/245:57 pmSTL - KTM
2 stops40h 18mCathay Pacific
Fri 3/611:15 pmKTM - STL
2 stops35h 38mCathay Pacific
Deal found 8/19$1,764
This Cathay Pacific 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/246:30 amSTL - KTM
2 stops51h 45mCathay Pacific
Sat 3/711:15 pmKTM - STL
2 stops34h 39mCathay Pacific
Deal found 8/19$1,796
This Gurufare 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/255:57 pmSTL - KTM
2 stops40h 18mCathay Pacific
Mon 3/211:15 pmKTM - STL
2 stops34h 54mCathay Pacific
Deal found 8/19$1,887
This Cathay Pacific 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2511:14 amSTL - KTM
2 stops47h 01mCathay Pacific
Sun 3/111:15 pmKTM - STL
2 stops35h 38mCathay Pacific
Deal found 8/19$1,920
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.
Fri 10/105:02 pmSTL - KTM
2 stops38h 03mQatar Airways
Fri 10/315:40 pmKTM - STL
2 stops39h 13mQatar Airways
Deal found 8/18$1,975
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.
Fri 10/103:30 pmSTL - KTM
3 stops35h 50mMultiple Airlines
Fri 10/315:30 pmKTM - STL
3 stops35h 00mMultiple Airlines
Deal found 8/18$2,256
This Qatar Airways 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/212:46 pmSTL - KTM
2 stops29h 49mQatar Airways
Mon 3/25:40 pmKTM - STL
2 stops30h 13mQatar Airways
Deal found 8/19$2,372

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Kathmandu 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 Kathmandu that are best for you.

Fly from

St. Louis

Fly to

Kathmandu

Route

Depart

Return

Price

St. LouisKathmandu

STL - KTM

STLKTM

Lambert-St Louis

Tue 1/20

1:48 pm-8:20 am

2 stops30h 47m

Kathmandu Tribhuvan

Tue 3/3

5:40 pm-1:58 pm

2 stops32h 03m

$1,462

St. LouisKathmandu

STL - KTM

STLKTM

Lambert-St Louis

Fri 9/19

5:28 am-10:15 am

2 stops42h 02m

Kathmandu Tribhuvan

Fri 10/17

7:05 pm-11:54 pm

2 stops39h 34m

$1,501

St. LouisKathmandu

STL - KTM

STLKTM

Lambert-St Louis

Sat 2/7

4:07 pm-4:25 pm

2 stops36h 33m

Kathmandu Tribhuvan

Sat 6/13

6:00 pm-8:12 pm

2 stops36h 57m

$1,545

St. LouisKathmandu

STL - KTM

STLKTM

Lambert-St Louis

Thu 10/2

5:28 am-4:45 pm

2 stops48h 32m

Kathmandu Tribhuvan

Thu 10/9

11:30 am-11:56 pm

2 stops47h 11m

$1,557

St. LouisKathmandu

STL - KTM

STLKTM

Lambert-St Louis

Fri 10/3

12:28 pm-5:50 pm

2 stops42h 37m

Kathmandu Tribhuvan

Tue 10/7

6:00 pm-11:56 pm

2 stops40h 41m

$1,642

St. LouisKathmandu

STL - KTM

STLKTM

Lambert-St Louis

Tue 12/23

5:56 am-10:00 pm

2 stops52h 19m

Kathmandu Tribhuvan

Wed 3/4

11:15 pm-9:44 pm

2 stops34h 14m

$1,745

St. LouisKathmandu

STL - KTM

STLKTM

Lambert-St Louis

Mon 9/15

4:00 pm-9:55 am

3 stops31h 10m

$565

St. LouisKathmandu

STL - KTM

STLKTM

Lambert-St Louis

Mon 9/15

9:46 am-8:50 am

2 stops36h 19m

$782

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/19

Best time to book a flight from St. Louis to Kathmandu

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

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

Currently, August is the cheapest month in which you can book a flight from St. Louis to Kathmandu (average of $1,218). Flying from St. Louis to Kathmandu in June is currently the most expensive (average of $1,685). 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 KTM?

Find hourly flight availability from St. Louis to Kathmandu. 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.

It’s optimal to fly from St. Louis to Kathmandu at noon. By choosing this option you can save up to 5% on the cost of your flight, compared to a flight in the morning.

How much does it cost to fly round-trip from St. Louis to Kathmandu?

Reviews of airlines servicing Kathmandu

Get insights into the airlines that provide service to Kathmandu. 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 Kathmandu. Reviews last updated August 20, 2025.
Peruse reviews from past customers who have flown with Cathay Pacific, Qatar Airways, and Turkish Airlines from St. Louis to Kathmandu to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Cathay Pacific
7.6
Good
972 reviews

Food

7.3

Entertainment

7.8

Boarding

7.9

Crew

8.1

Comfort

7.6

Overall

7.6

Reviews

1 / 20
10.0
Excellent

anish,Aug 2025

HKG - KTM

Journey was way better than on the airbus from Toronto to Hongkong , as the economy seats were better .
Cathay Pacific
7.6
Good
972 reviews
Cathay Pacific
7.6
Good
972 reviews

Food

7.3

Entertainment

7.8

Boarding

7.9

Crew

8.1

Comfort

7.6

Overall

7.6

Reviews

1 / 20
10.0
Excellent

anish,Aug 2025

HKG - KTM

Journey was way better than on the airbus from Toronto to Hongkong , as the economy seats were better .
Qatar Airways
7.4
Good
3,611 reviews
Cathay Pacific
7.6
Good
972 reviews

Food

7.3

Entertainment

7.8

Boarding

7.9

Crew

8.1

Comfort

7.6

Overall

7.6

Reviews

1 / 20
10.0
Excellent

anish,Aug 2025

HKG - KTM

Journey was way better than on the airbus from Toronto to Hongkong , as the economy seats were better .
Turkish Airlines
7.3
Good
3,949 reviews
Cathay Pacific
7.6
Good
972 reviews

Food

7.3

Entertainment

7.8

Boarding

7.9

Crew

8.1

Comfort

7.6

Overall

7.6

Reviews

1 / 20
10.0
Excellent

anish,Aug 2025

HKG - KTM

Journey was way better than on the airbus from Toronto to Hongkong , as the economy seats were better .

Related info for your journey

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

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

    Airlines like Qatar Airways fly from St. Louis to Kathmandu in about 30h 47m. The time it takes to get you to your destination can typically vary by up to . The distance from St. Louis to Kathmandu is about 7832 mi.

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

    Our cheapest airline available from St. Louis to Kathmandu is Qatar Airways. Our recent data shows that you can find tickets from as low as $1,132 on this airline. Additional options worth looking into are Turkish Airlines and Cathay Pacific, starting at $1,616 and $1,739 round-trip. Qatar Airways is currently priced 31% below the average price you’ll pay for this route.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from St. Louis to Kathmandu 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 Kathmandu?

    Currently, August is the cheapest month in which you can book a flight from St. Louis to Kathmandu (average of $1,218). Flying from St. Louis to Kathmandu in June is currently the most expensive (average of $1,685). 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

Traveling to a place near Kathmandu?

Book flights to Kathmandu if you plan to visit one of these locations
Nagarkot

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Alternative routes for St. Louis to Kathmandu

See prices for flight routes from nearby airports that may be better suited for you.
Kansas City to Kathmandu flights

Top 3 airlines flying from St. Louis to Kathmandu

Discover the top 3 airlines that operate flights from St. Louis to Kathmandu. 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
Qatar AirwaysCheapest$1,132Average$1,415FlexibilityNo cancel feeOn-time68%
Turkish AirlinesCheapest$1,616Average$2,105FlexibilityNo cancel feeOn-time77%
Cathay PacificCheapest$1,739Average$2,307FlexibilityNo cancel feeOn-time72%

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