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Kathmandu

$1,292+ Cheap flights from St. Louis (STL) to Kathmandu (KTM)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/3. Fares are subject to change and may not be available on all flights or dates of travel.
STL — KTM
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheapflights Tip: The best prices from Lambert-St Louis to Kathmandu Tribhuvan are usually found in February or March, booked 51 days in advance, depart on a Saturday or Monday and return on a Monday

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 September 17, 2025.

Round-trip from

$1,292
(FlightHub)

Popular in

December

Cheapest in

February

Average price

$1,549
From Lambert-St Louis to Kathmandu Tribhuvan
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Highest demand for flights based on searches. 11% potential increase in price ($222 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($74 potential savings vs. average RT price).
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Average for round-trip flights in September 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 September 17, 2025.

This FlightHub deal was found by Cheapflights users on 9/15. 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 11/35:58 pmSTL - KTM
2 stops35h 47mQatar Airways
Fri 12/265:40 pmKTM - STL
2 stops30h 37mQatar Airways
Deal found 9/15$1,292
This oojo deal was found by Cheapflights users on 9/14. 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 10/305:23 amSTL - KTM
2 stops40h 12mQatar Airways
Thu 11/65:40 pmKTM - STL
2 stops42h 01mQatar Airways
Deal found 9/14$1,343
This oojo deal was found by Cheapflights users on 9/16. 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.
Sat 10/114:34 pmSTL - KTM
2 stops30h 56mQatar Airways
Tue 10/289:35 amKTM - STL
2 stops45h 36mQatar Airways
Deal found 9/16$1,372
This oojo deal was found by Cheapflights users on 9/15. 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.
Fri 10/3110:10 amSTL - KTM
2 stops43h 30mQatar Airways
Fri 11/76:45 pmKTM - STL
2 stops40h 56mQatar Airways
Deal found 9/15$1,380
This Fareboom deal was found by Cheapflights users on 9/17. 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 Fareboom is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/36:20 amSTL - KTM
2 stops52h 40mCathay Pacific
Mon 10/611:00 pmKTM - STL
2 stops35h 03mCathay Pacific
Deal found 9/17$1,429
This Qatar Airways deal was found by Cheapflights users on 9/15. 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 10/37:23 amSTL - KTM
2 stops47h 42mQatar Airways
Tue 10/77:05 pmKTM - STL
2 stops36h 33mQatar Airways
Deal found 9/15$1,433
This FlightHub deal was found by Cheapflights users on 9/16. 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.
Thu 9/185:28 amSTL - KTM
2 stops48h 32mQatar Airways
Mon 10/66:00 pmKTM - STL
2 stops33h 08mQatar Airways
Deal found 9/16$1,483
This FlightHub deal was found by Cheapflights users on 9/15. 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.
Thu 9/185:28 amSTL - KTM
2 stops40h 37mQatar Airways
Sat 9/206:00 pmKTM - STL
2 stops37h 10mQatar Airways
Deal found 9/15$1,522
This Trip.com deal was found by Cheapflights users on 9/17. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/16:00 amSTL - KTM
2 stops48h 45mQatar Airways
Sat 11/85:40 pmKTM - STL
2 stops40h 34mQatar Airways
Deal found 9/17$1,552
This FlightHub deal was found by Cheapflights users on 9/15. 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 11/710:44 amSTL - KTM
2 stops41h 56mQatar Airways
Sun 11/96:45 pmKTM - STL
2 stops36h 30mQatar Airways
Deal found 9/15$1,560

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 September 17, 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

Mon 11/3

5:58 pm-5:30 pm

2 stops35h 47m

Kathmandu Tribhuvan

Fri 12/26

5:40 pm-12:32 pm

2 stops30h 37m

$1,292

St. LouisKathmandu

STL - KTM

STLKTM

Lambert-St Louis

Thu 10/30

5:23 am-8:20 am

2 stops40h 12m

Kathmandu Tribhuvan

Thu 11/6

5:40 pm-11:56 pm

2 stops42h 01m

$1,343

St. LouisKathmandu

STL - KTM

STLKTM

Lambert-St Louis

Sat 10/11

4:34 pm-10:15 am

2 stops30h 56m

Kathmandu Tribhuvan

Tue 10/28

9:35 am-8:26 pm

2 stops45h 36m

$1,372

St. LouisKathmandu

STL - KTM

STLKTM

Lambert-St Louis

Fri 10/3

7:23 am-5:50 pm

2 stops47h 42m

Kathmandu Tribhuvan

Tue 10/7

7:05 pm-8:53 pm

2 stops36h 33m

$1,433

St. LouisKathmandu

STL - KTM

STLKTM

Lambert-St Louis

Sat 11/1

6:00 am-5:30 pm

2 stops48h 45m

Kathmandu Tribhuvan

Sat 11/8

5:40 pm-10:29 pm

2 stops40h 34m

$1,552

St. LouisKathmandu

STL - KTM

STLKTM

Lambert-St Louis

Fri 11/7

10:44 am-4:25 pm

2 stops41h 56m

Kathmandu Tribhuvan

Sun 11/9

6:45 pm-7:30 pm

2 stops36h 30m

$1,560

St. LouisKathmandu

STL - KTM

STLKTM

Lambert-St Louis

Sat 12/13

6:55 am-9:30 pm

2 stops50h 50m

Kathmandu Tribhuvan

Tue 1/13

10:55 pm-11:59 pm

2 stops36h 49m

$1,745

St. LouisKathmandu

STL - KTM

STLKTM

Lambert-St Louis

Thu 11/27

4:05 pm-6:35 am

3 stops26h 45m

Kathmandu Tribhuvan

Thu 1/8

5:30 pm-1:55 pm

2 stops32h 10m

$1,818

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

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

How far ahead should I book a flight from St. Louis to Kathmandu?

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Kathmandu. Price data was last updated on September 12, 2025.

The best time to book flights from St. Louis to Kathmandu is 50 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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 $1,205). Flying from St. Louis to Kathmandu in June is currently the most expensive (average of $1,683). 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 September 17, 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.

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 September 17, 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
998 reviews

Entertainment

7.8

Comfort

7.6

Overall

7.6

Crew

8.1

Boarding

7.9

Food

7.3

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
998 reviews
Cathay Pacific
7.6
Good
998 reviews

Entertainment

7.8

Comfort

7.6

Overall

7.6

Crew

8.1

Boarding

7.9

Food

7.3

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
3,622 reviews
Cathay Pacific
7.6
Good
998 reviews

Entertainment

7.8

Comfort

7.6

Overall

7.6

Crew

8.1

Boarding

7.9

Food

7.3

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
3,965 reviews
Cathay Pacific
7.6
Good
998 reviews

Entertainment

7.8

Comfort

7.6

Overall

7.6

Crew

8.1

Boarding

7.9

Food

7.3

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 35h 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 $1,140 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 $1,205). Flying from St. Louis to Kathmandu in June is currently the most expensive (average of $1,683). 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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Qatar AirwaysCheapest$1,140Average$1,459FlexibilityNo cancel feeOn-time68%
Turkish AirlinesCheapest$1,616Average$2,105FlexibilityNo cancel feeOn-time77%
Cathay PacificCheapest$1,739Average$2,305FlexibilityNo cancel feeOn-time72%

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