What is the cheapest airline to fly 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 $1,292 on this airline. Qatar Airways is currently priced 19% below the average price you’ll pay for this route.

What is the cheapest day to fly from St. Louis to Kathmandu?

Travelers seeking maximum savings on their St. Louis to Kathmandu flight should consider departing on Saturday afternoons when fares are most often at their lowest. Tuesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

In terms of precipitation, rainfall in Kathmandu ranges from 0.0 - 14.6 inches per month. July is typically the wettest month, when rainfall can reach 14.6 in. November is typically the driest time to visit Kathmandu when rainfall is around 0.0 in.

If weather is an important factor for your trip to Kathmandu, use this chart to help with planning. For those seeking warmer temperatures, June is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 50.0 F).

What are the most popular airlines that fly from St. Louis to Kathmandu?

Consider Cathay Pacific, Qatar Airways or Turkish Airlines when booking your flight. These represent the most popular airlines when flying from St. Louis to Kathmandu.

What is the cheapest day to fly round-trip from St. Louis to Kathmandu?

Departing on a Friday is a good option for securing a great price. You can expect to save up to 16% when planning your travel around this day of the week.

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

Users have found that booking a flight from St. Louis to Kathmandu at least 51 days early can save you up to 156% on average compared to booking a flight this week. If booking 51 days before your flight isn’t an option for you, users have found flights from St. Louis to Kathmandu for as little as $1,963 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $1,963 for flights departing within the next 3 days.

What is the cheapest month to fly from St. Louis to Kathmandu?

Flights from St. Louis to Kathmandu lean towards being more expensive in December. Prices are generally better when you fly from St. Louis to Kathmandu in March, with the cheapest ticket starting at $766.

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.

$574+ Flights from St. Louis to Kathmandu

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Cheapflights Tip: The best prices from Lambert-St Louis to Kathmandu Tribhuvan are usually found in March or February, booked 51 days in advance, depart on a Saturday or Monday and return on a Monday

Cheap flight deals from St. Louis to Kathmandu

Round-trip from	$1,292 (FlightHub)
One-way from	$574 (Kiwi.com)
Popular in	December
Cheapest in	March
Average price	$1,612

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. 4% potential increase in price ($83 potential increase over avg. RT price).

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Cheapest flight prices on average. 3% potential price decrease ($47 potential savings vs. average RT price).

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Average for round-trip flights in July 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 July 3, 2025.

Mon 8/111:15 pmSTL - KTM

2 stops32h 50mQatar Airways

Thu 10/167:05 pmKTM - STL

2 stops36h 03mQatar Airways

Deal found 7/3

$1,292

Wed 10/151:30 pmSTL - KTM

3 stops30h 30mMultiple Airlines

Wed 11/121:45 pmKTM - STL

3 stops38h 45mMultiple Airlines

Deal found 7/2

$1,610

Thu 7/106:00 amSTL - KTM

2 stops27h 20mAir India

Sun 8/109:00 pmKTM - STL

3 stops36h 30mAir India

Deal found 7/2

$2,775

Mon 7/77:38 pmSTL - KTM

2 stops39h 22mCathay Pacific

Fri 8/811:00 pmKTM - STL

2 stops34h 59mCathay Pacific

Deal found 7/3

$2,852

Best flights from St. Louis to Kathmandu
Discover carefully curated flight deals from St. Louis to Kathmandu that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 3, 2025.

Mon 8/111:15 pmSTL - KTM

2 stops32h 50mQatar Airways

Thu 10/167:05 pmKTM - STL

2 stops36h 03mQatar Airways

Deal found 7/3

$1,292

Wed 10/151:30 pmSTL - KTM

3 stops30h 30mMultiple Airlines

Wed 11/121:45 pmKTM - STL

3 stops38h 45mMultiple Airlines

Deal found 7/2

$1,610

Last-minute flights from St. Louis to Kathmandu
Discover last-minute flight deals from St. Louis to Kathmandu. Data last updated July 3, 2025 and is based on user searches.

Mon 7/77:38 pmSTL - KTM

2 stops39h 22mCathay Pacific

Fri 8/811:00 pmKTM - STL

2 stops34h 59mCathay Pacific

Deal found 7/3

$2,852

Wed 7/91:16 pmSTL - KTM

2 stops33h 04mQatar Airways

Mon 8/1110:05 amKTM - STL

2 stops48h 39mQatar Airways

Deal found 7/3

$1,808

Thu 7/106:00 amSTL - KTM

2 stops27h 20mAir India

Sun 8/109:00 pmKTM - STL

3 stops36h 30mAir India

Deal found 7/2

$2,775

Thu 7/101:20 pmSTL - KTM

3 stops33h 00mMultiple Airlines

Sun 8/107:35 amKTM - STL

3 stops42h 57mMultiple Airlines

Deal found 7/3

$8,808

Tue 7/296:00 amSTL - KTM

2 stops37h 50mMultiple Airlines

Tue 8/51:25 pmKTM - STL

3 stops37h 07mMultiple Airlines

Deal found 7/1

$1,961

Mon 8/111:15 pmSTL - KTM

2 stops32h 50mQatar Airways

Thu 10/167:05 pmKTM - STL

2 stops36h 03mQatar Airways

Deal found 7/3

$1,292

One-way flights from St. Louis to Kathmandu
Search for one-way flight options from St. Louis to Kathmandu. Find affordable one-way fares based on user searches. Data last updated July 3, 2025.

Wed 8/137:29 pmSTL - KTM

3 stops59h 56mMultiple Airlines

Deal found 7/1

$574

Wed 8/136:55 pmSTL - KTM

2 stops58h 00mEtihad Airways

Deal found 7/1

$654

Cheapflights Fare Finder

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

St. LouisKathmandu

STL - KTM

STLKTM

Lambert-St Louis

Mon 8/11

1:15 pm-8:50 am

2 stops32h 50m

Kathmandu Tribhuvan

Thu 10/16

7:05 pm-8:23 pm

2 stops36h 03m

$1,292

St. LouisKathmandu

STL - KTM

STLKTM

Lambert-St Louis

Wed 10/15

1:30 pm-6:45 am

3 stops30h 30m

Kathmandu Tribhuvan

Wed 11/12

1:45 pm-4:45 pm

3 stops38h 45m

$1,610

St. LouisKathmandu

STL - KTM

STLKTM

Lambert-St Louis

Wed 8/13

7:29 pm-6:10 pm

3 stops59h 56m

$574

St. LouisKathmandu

STL - KTM

STLKTM

Lambert-St Louis

Wed 8/13

6:55 pm-3:40 pm

2 stops58h 00m

$654

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/1

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?

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, September is the cheapest month in which you can book a flight from St. Louis to Kathmandu (average of $1,237). Flying from St. Louis to Kathmandu in June is currently the most expensive (average of $1,686). 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?

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

Peruse reviews from past customers who have flown with Qatar Airways and Etihad 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.

Qatar Airways

7.4

Good

3,594 reviews

Reviews

1 / 20

10.0

Excellent

fa,May 2025

PHL - DOH

The best,the staff was experienced,cheerful, professional,I will use from now on more frequently American airlines

Qatar Airways

7.4

Good

3,594 reviews

Qatar Airways

7.4

Good

3,594 reviews

Reviews

1 / 20

10.0

Excellent

fa,May 2025

PHL - DOH

The best,the staff was experienced,cheerful, professional,I will use from now on more frequently American airlines

Etihad Airways

7.4

Good

1,220 reviews

Qatar Airways

7.4

Good

3,594 reviews

Reviews

1 / 20

10.0

Excellent

fa,May 2025

PHL - DOH

The best,the staff was experienced,cheerful, professional,I will use from now on more frequently American airlines

Related info for your journey

What is the cheapest airline to fly 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 $1,292 on this airline. Qatar Airways is currently priced 19% 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, September is the cheapest month in which you can book a flight from St. Louis to Kathmandu (average of $1,237). Flying from St. Louis to Kathmandu in June is currently the most expensive (average of $1,686). 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

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Alternative routes for St. Louis to Kathmandu

Kansas City to Kathmandu flights

Other flights to Kathmandu

Top 3 airlines flying from St. Louis to Kathmandu

Airline	Cheapest	Average	Flexibility	On-time
Qatar Airways	Cheapest$1,075	Average$1,434	FlexibilityNo cancel fee	On-time68%
Turkish Airlines	Cheapest$1,616	Average$2,105	FlexibilityNo cancel fee	On-time77%
Cathay Pacific	Cheapest$1,739	Average$2,307	FlexibilityNo cancel fee	On-time72%

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$574+ 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 8/13. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from St. Louis to Kathmandu with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Lambert-St Louis to Kathmandu Tribhuvan are usually found in March or February, booked 51 days in advance, depart on a Saturday or Monday and return on a Monday

Cheap flight deals from St. Louis to Kathmandu

Round-trip from

One-way from

Popular in

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Find flight deals from St. Louis to Kathmandu

Cheapest flights from St. Louis to KathmanduExplore 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 July 3, 2025.

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 July 3, 2025.

Cheapflights Fare Finder

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

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.

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 June 27, 2025.

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

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 July 3, 2025.

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

Reviews of airlines servicing Kathmandu

Peruse reviews from past customers who have flown with Qatar Airways and Etihad 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.

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.

What is the cheapest airline to fly from St. Louis to Kathmandu round-trip?

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

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

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

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

Traveling to a place near St. Louis?

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Alternative routes for St. Louis to Kathmandu

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Top 3 airlines flying from St. Louis to Kathmandu

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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 July 3, 2025.