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Cheap flights from St. Louis to Kathmandu from $776

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Kathmandu departing on 1/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Find the cheapest flights from St. Louis to Kathmandu

Cheap round-trip flights

Enter your travel dates to find the best prices.
Qatar Airways Logo
7:02 am - 2:15 pmSTL  Lambert-St Louis-KTM Kathmandu Tribhuvan
44h 28m2 stops Seattle/Tacoma Intl Doha Hamad Intl
Qatar Airways Logo
5:40 pm - 11:59 pmKTM  Kathmandu Tribhuvan-STL Lambert-St Louis
41h 04m2 stops Doha Hamad Intl Seattle/Tacoma Intl
$1,277Qatar Airways
Tue, Oct 20 - Wed, Oct 28
Qatar Airways Logo
7:02 am - 2:15 pmSTL  Lambert-St Louis-KTM Kathmandu Tribhuvan
44h 28m2 stops Seattle/Tacoma Intl Doha Hamad Intl
Qatar Airways Logo
5:40 pm - 11:59 pmKTM  Kathmandu Tribhuvan-STL Lambert-St Louis
41h 04m2 stops Doha Hamad Intl Seattle/Tacoma Intl
$1,279Qatar Airways
Tue, Oct 20 - Wed, Oct 28
Qatar Airways Logo
6:35 am - 2:15 pmSTL  Lambert-St Louis-KTM Kathmandu Tribhuvan
44h 55m2 stops Seattle/Tacoma Intl Doha Hamad Intl
Qatar Airways Logo
6:45 pm - 11:59 pmKTM  Kathmandu Tribhuvan-STL Lambert-St Louis
39h 59m2 stops Doha Hamad Intl Seattle/Tacoma Intl
$1,306Qatar Airways
Mon, Aug 31 - Tue, Oct 20
Qatar Airways Logo
6:29 am - 4:45 pmSTL  Lambert-St Louis-KTM Kathmandu Tribhuvan
47h 31m2 stops Seattle/Tacoma Intl Doha Hamad Intl
Qatar Airways Logo
6:45 pm - 11:59 pmKTM  Kathmandu Tribhuvan-STL Lambert-St Louis
39h 59m2 stops Doha Hamad Intl Seattle/Tacoma Intl
$1,308Qatar Airways
Wed, Sep 16 - Wed, Sep 23
Multiple Airlines Logo
8:36 am - 8:50 amSTL  Lambert-St Louis-KTM Kathmandu Tribhuvan
37h 29m2 stops Dallas/Fort Worth Doha Hamad Intl
Multiple Airlines Logo
3:30 pm - 2:21 pmKTM  Kathmandu Tribhuvan-STL Lambert-St Louis
57h 36m2 stops Doha Hamad Intl Seattle/Tacoma Intl
$1,398Multiple Airlines
Tue, Sep 8 - Tue, Sep 15
Multiple Airlines Logo
10:16 am - 8:50 amSTL  Lambert-St Louis-KTM Kathmandu Tribhuvan
35h 49m2 stops Dallas/Fort Worth Doha Hamad Intl
Multiple Airlines Logo
5:40 pm - 2:25 pmKTM  Kathmandu Tribhuvan-STL Lambert-St Louis
56h 30m2 stops Doha Hamad Intl Seattle/Tacoma Intl
$1,417Multiple Airlines
Mon, Aug 31 - Tue, Nov 3
Multiple Airlines Logo
6:35 am - 8:50 amSTL  Lambert-St Louis-KTM Kathmandu Tribhuvan
39h 30m2 stops Seattle/Tacoma Intl Doha Hamad Intl
Multiple Airlines Logo
5:40 pm - 2:04 pmKTM  Kathmandu Tribhuvan-STL Lambert-St Louis
32h 09m2 stops Doha Hamad Intl Dallas/Fort Worth
$1,490Multiple Airlines
Tue, Sep 1 - Tue, Nov 3
Cathay Pacific Logo
9:32 am - 9:45 pmSTL  Lambert-St Louis-KTM Kathmandu Tribhuvan
49h 28m2 stops Chicago O'Hare Intl Hong Kong Intl
Cathay Pacific Logo
10:55 pm - 11:59 pmKTM  Kathmandu Tribhuvan-STL Lambert-St Louis
36h 49m2 stops Hong Kong Intl Seattle/Tacoma Intl
$2,214Cathay Pacific
Thu, Sep 3 - Sun, Nov 1
Cathay Pacific Logo
3:32 pm - 9:45 pmSTL  Lambert-St Louis-KTM Kathmandu Tribhuvan
43h 28m2 stops Dallas/Fort Worth Hong Kong Intl
Cathay Pacific Logo
10:55 pm - 11:59 pmKTM  Kathmandu Tribhuvan-STL Lambert-St Louis
36h 49m2 stops Hong Kong Intl Seattle/Tacoma Intl
$2,264Cathay Pacific
Fri, Aug 28 - Wed, Nov 4
Cathay Pacific Logo
6:00 am - 9:45 pmSTL  Lambert-St Louis-KTM Kathmandu Tribhuvan
53h 00m2 stops Los Angeles Los Angeles Hong Kong Intl
Cathay Pacific Logo
10:55 pm - 8:19 pmKTM  Kathmandu Tribhuvan-STL Lambert-St Louis
33h 09m2 stops Hong Kong Intl Dallas/Fort Worth
$2,264Cathay Pacific
Fri, Aug 28 - Tue, Nov 3

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Qatar Airways flights from St. Louis to Kathmandu

Our best Qatar Airways deals on St. Louis to Kathmandu flight tickets
Qatar Airways
Oct 20
STL7:02 amLambert-St Louis
44h 28m
2 stops
KTM2:15 pmKathmandu Tribhuvan
Oct 28
KTM5:40 pmKathmandu Tribhuvan
41h 04m
2 stops
STL11:59 pmLambert-St Louis
$1,277
Qatar Airways
Oct 20
STL7:02 amLambert-St Louis
44h 28m
2 stops
KTM2:15 pmKathmandu Tribhuvan
Oct 28
KTM5:40 pmKathmandu Tribhuvan
41h 04m
2 stops
STL11:59 pmLambert-St Louis
$1,279
Qatar Airways
Aug 31
STL6:35 amLambert-St Louis
44h 55m
2 stops
KTM2:15 pmKathmandu Tribhuvan
Oct 20
KTM6:45 pmKathmandu Tribhuvan
39h 59m
2 stops
STL11:59 pmLambert-St Louis
$1,306

momondo 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, momondo users made 832,500 searches. Data last updated August 13, 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 Lambert-St Louis - KTM Kathmandu Tribhuvan

STLKTM

Lambert-St Louis

Tue 10/20

7:02 am-2:15 pm

2 stops44h 28m

Kathmandu Tribhuvan

Wed 10/28

5:40 pm-11:59 pm

2 stops41h 04m

$1,277

St. LouisKathmandu

STL Lambert-St Louis - KTM Kathmandu Tribhuvan

STLKTM

Lambert-St Louis

Tue 10/20

7:02 am-2:15 pm

2 stops44h 28m

Kathmandu Tribhuvan

Wed 10/28

5:40 pm-11:59 pm

2 stops41h 04m

$1,279

St. LouisKathmandu

STL Lambert-St Louis - KTM Kathmandu Tribhuvan

STLKTM

Lambert-St Louis

Mon 8/31

6:35 am-2:15 pm

2 stops44h 55m

Kathmandu Tribhuvan

Tue 10/20

6:45 pm-11:59 pm

2 stops39h 59m

$1,306

St. LouisKathmandu

STL Lambert-St Louis - KTM Kathmandu Tribhuvan

STLKTM

Lambert-St Louis

Wed 9/16

6:29 am-4:45 pm

2 stops47h 31m

Kathmandu Tribhuvan

Wed 9/23

6:45 pm-11:59 pm

2 stops39h 59m

$1,308

St. LouisKathmandu

STL Lambert-St Louis - KTM Kathmandu Tribhuvan

STLKTM

Lambert-St Louis

Tue 9/8

8:36 am-8:50 am

2 stops37h 29m

Kathmandu Tribhuvan

Tue 9/15

3:30 pm-2:21 pm

2 stops57h 36m

$1,398

St. LouisKathmandu

STL Lambert-St Louis - KTM Kathmandu Tribhuvan

STLKTM

Lambert-St Louis

Mon 8/31

10:16 am-8:50 am

2 stops35h 49m

Kathmandu Tribhuvan

Tue 11/3

5:40 pm-2:25 pm

2 stops56h 30m

$1,417
Quickest round-trip

St. LouisKathmandu

STL Lambert-St Louis - KTM Kathmandu Tribhuvan

STLKTM

Lambert-St Louis

Tue 9/1

6:35 am-8:50 am

2 stops39h 30m

Kathmandu Tribhuvan

Tue 11/3

5:40 pm-2:04 pm

2 stops32h 09m

$1,490

St. LouisKathmandu

STL Lambert-St Louis - KTM Kathmandu Tribhuvan

STLKTM

Lambert-St Louis

Thu 9/3

9:32 am-9:45 pm

2 stops49h 28m

Kathmandu Tribhuvan

Sun 11/1

10:55 pm-11:59 pm

2 stops36h 49m

$2,214

St. LouisKathmandu

STL Lambert-St Louis - KTM Kathmandu Tribhuvan

STLKTM

Lambert-St Louis

Fri 8/28

3:32 pm-9:45 pm

2 stops43h 28m

Kathmandu Tribhuvan

Wed 11/4

10:55 pm-11:59 pm

2 stops36h 49m

$2,264

St. LouisKathmandu

STL Lambert-St Louis - KTM Kathmandu Tribhuvan

STLKTM

Lambert-St Louis

Fri 8/28

6:00 am-9:45 pm

2 stops53h 00m

Kathmandu Tribhuvan

Tue 11/3

10:55 pm-8:19 pm

2 stops33h 09m

$2,264

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Kathmandu from

How to get the cheapest flight ticket from St. Louis to Kathmandu

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Kathmandu?

The month of August is another great option to travel to Kathmandu, with average flight prices from St. Louis averaging around $1,489.

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

You are more likely to see cheaper flights to Kathmandu from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Kathmandu for around $1,637 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Kathmandu from St. Louis for as low as $1,477 on momondo.

When to book flights from St. Louis to Kathmandu

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Kathmandu according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap St. Louis to Kathmandu (STL to KTM) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Kathmandu

Fastest flight time

27h 22m

Direct flights

None
The fastest flight from St. Louis to Kathmandu takes 27h 22m
There are no direct flights from St. Louis to Kathmandu. There are no popular flight routes from St. Louis to Kathmandu.
Search flight deals

Frequently asked questions about flying from St. Louis to Kathmandu

  • How far is Lambert-St Louis to Kathmandu Tribhuvan by plane?

    Kathmandu Tribhuvan is 7838.3 mi away from Lambert-St Louis. Typically, this will take 27h 22m by plane in normal conditions.

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Kathmandu Tribhuvan Airport?

    Prices for flights from Lambert-St Louis Airport to Kathmandu Tribhuvan Airport were last updated today.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to Kathmandu Tribhuvan Airport?

  • How old do you have to be to fly from Lambert-St Louis Airport to Kathmandu Tribhuvan Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Lambert-St Louis Airport to Kathmandu Tribhuvan Airport.

  • What documentation or ID do you need to fly to Kathmandu Tribhuvan Airport?

    The necessary travel and health documents for your Kathmandu Tribhuvan Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from St. Louis to Kathmandu?

Best airlines flying from St. Louis to Kathmandu

Compare and see reviews for airlines that fly from St. Louis to Kathmandu with momondo
Airline
Rating
Free Cancellation
Price
Qatar AirwaysPriceFrom $1,247Free CancellationRating
7.4
3,742 reviews
Search Qatar Airways flights
Cathay PacificPriceFrom $1,295Free CancellationRating
7.6
1,451 reviews
Search Cathay Pacific flights

Traveling to a place near Kathmandu?

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

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Kathmandu?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Kathmandu from St. Louis.

Can I find flights from St. Louis to Kathmandu with flexible booking policies on momondo?

momondo does allow users to show only those flights to Kathmandu from St. Louis which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from St. Louis to Kathmandu?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Kathmandu from St. Louis.

I’m not ready to book a flight from St. Louis to Kathmandu right now. Can momondo alert me if prices change?

If you are not ready to book a flight from St. Louis to Kathmandu now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Kathmandu and let you know when they change.

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Qatar Airways
Cathay Pacific