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Kathmandu

$633+ 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 5/4. Fares are subject to change and may not be available on all flights or dates of travel.
STL — KTM
May 8 — May 151
Fri 5/8
Fri 5/15
1 adult, Economy
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Cheap 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 April 8, 2026.

This Justfly.com deal was found by Cheapflights users on 4/4. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/213:50 pm
STL
-
KTM
2 stops54h 05m
Multiple Airlines
Tue 5/267:10 pm
KTM
-
STL
2 stops39h 29m
Multiple Airlines
Deal found 4/4$1,223
This FlightHub deal was found by Cheapflights users on 4/6. 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.
Tue 10/207:00 am
STL
-
KTM
2 stops40h 05m
Qatar Airways
Wed 10/289:35 am
KTM
-
STL
2 stops49h 09m
Qatar Airways
Deal found 4/6$1,280
This Fareboom deal was found by Cheapflights users on 4/7. 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.
Thu 11/127:00 am
STL
-
KTM
2 stops45h 40m
Qatar Airways
Thu 12/176:45 pm
KTM
-
STL
2 stops39h 35m
Qatar Airways
Deal found 4/7$1,345
This FlightHub deal was found by Cheapflights users on 4/4. 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 5/47:00 am
STL
-
KTM
2 stops38h 55m
Multiple Airlines
Fri 6/127:10 pm
KTM
-
STL
2 stops37h 12m
Multiple Airlines
Deal found 4/4$1,363
This FlightHub deal was found by Cheapflights users on 4/6. 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.
Tue 5/54:46 pm
STL
-
KTM
2 stops53h 09m
Multiple Airlines
Tue 5/127:10 pm
KTM
-
STL
2 stops39h 29m
Multiple Airlines
Deal found 4/6$1,364
This FlightHub deal was found by Cheapflights users on 4/4. 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 5/47:00 am
STL
-
KTM
2 stops47h 00m
Multiple Airlines
Wed 6/107:10 pm
KTM
-
STL
2 stops39h 29m
Multiple Airlines
Deal found 4/4$1,365
This KAYAK deal was found by Cheapflights users on 4/4. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/54:46 pm
STL
-
KTM
2 stops61h 14m
Multiple Airlines
Thu 6/117:10 pm
KTM
-
STL
2 stops39h 29m
Multiple Airlines
Deal found 4/4$1,418
This FlightHub deal was found by Cheapflights users on 4/3. 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 5/27:00 am
STL
-
KTM
2 stops38h 55m
Multiple Airlines
Sat 5/97:10 pm
KTM
-
STL
2 stops37h 59m
Multiple Airlines
Deal found 4/3$1,448
This FlightHub deal was found by Cheapflights users on 4/5. 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 9/256:00 am
STL
-
KTM
2 stops41h 05m
Qatar Airways
Sat 10/36:00 pm
KTM
-
STL
2 stops31h 30m
Qatar Airways
Deal found 4/5$1,455
This Fareboom deal was found by Cheapflights users on 4/6. 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.
Tue 4/2811:06 am
STL
-
KTM
2 stops34h 49m
Qatar Airways
Thu 5/147:10 pm
KTM
-
STL
2 stops39h 31m
Qatar Airways
Deal found 4/6$1,474
This Fareboom deal was found by Cheapflights users on 4/3. 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.
Wed 5/136:21 am
STL
-
KTM
2 stops52h 39m
Multiple Airlines
Thu 5/287:40 am
KTM
-
STL
2 stops48h 21m
Multiple Airlines
Deal found 4/3$1,483

Find 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 April 8, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,223
(Justfly.com)

One-way from

$633
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$1,606
Provider with most accurate pricing for Lambert-St Louis-Kathmandu Tribhuvan flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Kathmandu Tribhuvan flights.
Search Deals
From Lambert-St Louis to Kathmandu Tribhuvan
Search Deals
One-way flight from Lambert-St Louis to Kathmandu Tribhuvan
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($153 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($48 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

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 April 8, 2026.
Use the filters below to find and compare flights from St. Louis to Kathmandu that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisKathmandu

STL - KTM

STLKTM

Lambert-St Louis

Tue 4/21

3:50 pm-8:40 am

2 stops54h 05m

Kathmandu Tribhuvan

Tue 5/26

7:10 pm-11:54 pm

2 stops39h 29m

$1,223

St. LouisKathmandu

STL - KTM

STLKTM

Lambert-St Louis

Tue 5/5

4:46 pm-8:40 am

2 stops53h 09m

Kathmandu Tribhuvan

Tue 5/12

7:10 pm-11:54 pm

2 stops39h 29m

$1,364

St. LouisKathmandu

STL - KTM

STLKTM

Lambert-St Louis

Wed 9/9

6:00 am-8:50 am

2 stops40h 05m

Kathmandu Tribhuvan

Sun 9/13

6:00 pm-7:46 pm

2 stops36h 31m

$1,571

St. LouisKathmandu

STL - KTM

STLKTM

Lambert-St Louis

Sun 5/3

7:12 am-8:40 am

2 stops38h 43m

Kathmandu Tribhuvan

Wed 6/10

7:10 pm-8:30 pm

2 stops36h 05m

$1,609

St. LouisKathmandu

STL - KTM

STLKTM

Lambert-St Louis

Thu 5/7

7:12 am-8:40 am

2 stops38h 43m

Kathmandu Tribhuvan

Fri 6/12

7:10 pm-11:54 pm

2 stops39h 29m

$1,609

St. LouisKathmandu

STL - KTM

STLKTM

Lambert-St Louis

Sat 5/2

7:00 am-8:40 am

2 stops38h 55m

Kathmandu Tribhuvan

Wed 6/10

7:10 pm-11:54 pm

2 stops39h 29m

$1,644

St. LouisKathmandu

STL - KTM

STLKTM

Lambert-St Louis

Sat 5/2

7:00 am-8:40 am

2 stops38h 55m

Kathmandu Tribhuvan

Fri 6/12

7:10 pm-10:58 pm

2 stops38h 33m

$1,644
Quickest round-trip

St. LouisKathmandu

STL - KTM

STLKTM

Lambert-St Louis

Wed 5/6

4:30 pm-8:40 am

2 stops29h 25m

Kathmandu Tribhuvan

Sat 6/13

7:10 pm-9:37 pm

2 stops37h 12m

$1,654
Cheapest one-way

St. LouisKathmandu

STL - KTM

STLKTM

Lambert-St Louis

Mon 5/4

12:27 pm-8:40 am

2 stops33h 28m

$756

St. LouisKathmandu

STL - KTM

STLKTM

Lambert-St Louis

Thu 7/2

8:08 pm-6:35 am

3 stops47h 42m

$816

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/3

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

Compare providers for flights from St. Louis to Kathmandu

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Kathmandu in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars
CheapfaremartPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on St. Louis-Kathmandu flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Kathmandu flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Kathmandu flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on St. Louis-Kathmandu flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Kathmandu flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 April 3, 2026.

The best time to book flights from St. Louis to Kathmandu is 19 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, February is the cheapest month in which you can book a flight from St. Louis to Kathmandu (average of $1,071). Flying from St. Louis to Kathmandu in June is currently the most expensive (average of $1,730). 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.

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 April 8, 2026.
Peruse reviews from past customers who have flown with Cathay Pacific and Qatar Airways 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
1,258 reviews

Overall

7.6

Crew

8.1

Boarding

7.9

Entertainment

7.8

Comfort

7.6

Food

7.3

Reviews

1 / 20
4.0
Okay

Jasper,Mar 2026

SFO - HKG

Food and comfort. Rice was kinda dry and hard. Ratio of protein to starch was menial.i probably found two chunks of chicken on the stew. Seats were tight. Very cramped. It was a bit warm during the flight. My check in baggage was separated from my connection ting flight. Had to wait a few hours in the airport, costing me extra cash for the driver to wait. I dont think ill be ever flying cathay pacific ever again.
Cathay Pacific
7.6
Good
1,258 reviews
Cathay Pacific
7.6
Good
1,258 reviews

Overall

7.6

Crew

8.1

Boarding

7.9

Entertainment

7.8

Comfort

7.6

Food

7.3

Reviews

1 / 20
4.0
Okay

Jasper,Mar 2026

SFO - HKG

Food and comfort. Rice was kinda dry and hard. Ratio of protein to starch was menial.i probably found two chunks of chicken on the stew. Seats were tight. Very cramped. It was a bit warm during the flight. My check in baggage was separated from my connection ting flight. Had to wait a few hours in the airport, costing me extra cash for the driver to wait. I dont think ill be ever flying cathay pacific ever again.
Qatar Airways
7.4
Good
3,729 reviews
Cathay Pacific
7.6
Good
1,258 reviews

Overall

7.6

Crew

8.1

Boarding

7.9

Entertainment

7.8

Comfort

7.6

Food

7.3

Reviews

1 / 20
4.0
Okay

Jasper,Mar 2026

SFO - HKG

Food and comfort. Rice was kinda dry and hard. Ratio of protein to starch was menial.i probably found two chunks of chicken on the stew. Seats were tight. Very cramped. It was a bit warm during the flight. My check in baggage was separated from my connection ting flight. Had to wait a few hours in the airport, costing me extra cash for the driver to wait. I dont think ill be ever flying cathay pacific ever again.

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 40h 05m. 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 Cathay Pacific. Our recent data shows that you can find tickets from as low as $1,295 on this airline. An additional option worth looking into is Qatar Airways, starting at $1,301. Cathay Pacific is currently priced 18% 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, February is the cheapest month in which you can book a flight from St. Louis to Kathmandu (average of $1,071). Flying from St. Louis to Kathmandu in June is currently the most expensive (average of $1,730). 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

Browse thousands of different options on Cheapflights for your next trip

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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 2 airlines flying from St. Louis to Kathmandu

Discover the top 2 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 April 8, 2026.
AirlineCheapestAverageFlexibilityOn-time
Cathay PacificCheapest$1,295Average$1,739FlexibilityNo cancel feeOn-time72%
Qatar AirwaysCheapest$1,301Average$1,533FlexibilityNo cancel feeOn-time68%

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