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Cheap flights from St. Louis to Kathmandu from $657

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 9/15. 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

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Kathmandu

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
7:00 am - 5:20 pm
STL
-
KTM
47h 35m
2 stops
Multiple Airlines Logo
9:35 am - 11:59 pm
KTM
-
STL
49h 09m
2 stops
$1,297Multiple Airlines
Tue, Oct 20 - Wed, Oct 28
Qatar Airways Logo
6:02 am - 2:15 pm
STL
-
KTM
45h 28m
2 stops
Qatar Airways Logo
3:30 pm - 11:32 pm
KTM
-
STL
42h 47m
2 stops
$1,413Qatar Airways
Wed, Jul 15 - Fri, Jul 31
Multiple Airlines Logo
6:29 am - 8:50 am
STL
-
KTM
39h 36m
2 stops
Multiple Airlines Logo
6:00 pm - 2:45 pm
KTM
-
STL
31h 30m
2 stops
$1,436Multiple Airlines
Thu, Sep 10 - Thu, Oct 22
Multiple Airlines Logo
4:40 pm - 5:20 pm
STL
-
KTM
61h 55m
2 stops
Multiple Airlines Logo
11:05 am - 2:45 pm
KTM
-
STL
38h 25m
2 stops
$1,462Multiple Airlines
Tue, Oct 20 - Wed, Oct 28
Qatar Airways Logo
6:29 am - 5:20 pm
STL
-
KTM
48h 06m
2 stops
Qatar Airways Logo
6:00 pm - 11:59 pm
KTM
-
STL
40h 44m
2 stops
$1,467Qatar Airways
Sun, Sep 20 - Thu, Sep 24
Qatar Airways Logo
7:00 am - 4:45 pm
STL
-
KTM
47h 00m
2 stops
Qatar Airways Logo
11:05 am - 7:27 pm
KTM
-
STL
44h 07m
2 stops
$1,468Qatar Airways
Sun, Oct 18 - Mon, Nov 30
Qatar Airways Logo
6:29 am - 8:50 am
STL
-
KTM
39h 36m
2 stops
Qatar Airways Logo
6:45 pm - 2:21 pm
KTM
-
STL
54h 21m
2 stops
$1,474Qatar Airways
Thu, Sep 24 - Mon, Sep 28
Qatar Airways Logo
6:29 am - 5:20 pm
STL
-
KTM
48h 06m
2 stops
Qatar Airways Logo
6:45 pm - 2:21 pm
KTM
-
STL
54h 21m
2 stops
$1,477Qatar Airways
Thu, Sep 24 - Mon, Sep 28
Qatar Airways Logo
8:38 am - 8:50 am
STL
-
KTM
37h 27m
2 stops
Qatar Airways Logo
6:45 pm - 3:00 pm
KTM
-
STL
32h 00m
2 stops
$1,523Qatar Airways
Sun, Aug 2 - Wed, Dec 16
Qatar Airways Logo
6:45 pm - 8:50 am
STL
-
KTM
27h 20m
2 stops
Qatar Airways Logo
10:05 am - 11:59 pm
KTM
-
STL
48h 39m
2 stops
$1,524Qatar Airways
Thu, Aug 20 - Thu, Sep 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
Jul 15
STL6:02 amLambert-St Louis
45h 28m
2 stops
KTM2:15 pmKathmandu Tribhuvan
Jul 31
KTM3:30 pmKathmandu Tribhuvan
42h 47m
2 stops
STL11:32 pmLambert-St Louis
$1,413
Qatar Airways
Sep 20
STL6:29 amLambert-St Louis
48h 06m
2 stops
KTM5:20 pmKathmandu Tribhuvan
Sep 24
KTM6:00 pmKathmandu Tribhuvan
40h 44m
2 stops
STL11:59 pmLambert-St Louis
$1,467
Qatar Airways
Oct 18
STL7:00 amLambert-St Louis
47h 00m
2 stops
KTM4:45 pmKathmandu Tribhuvan
Nov 30
KTM11:05 amKathmandu Tribhuvan
44h 07m
2 stops
STL7:27 pmLambert-St Louis
$1,468

Emirates flights from St. Louis to Kathmandu

Our best Emirates deals on St. Louis to Kathmandu flight tickets
Emirates
Sep 9
STL3:13 pmLambert-St Louis
45h 37m
2 stops
KTM11:35 pmKathmandu Tribhuvan
Sep 22
KTM7:55 pmKathmandu Tribhuvan
36h 21m
2 stops
STL9:31 pmLambert-St Louis
$5,817
Emirates
Sep 11
STL3:13 pmLambert-St Louis
45h 37m
2 stops
KTM11:35 pmKathmandu Tribhuvan
Sep 22
KTM7:55 pmKathmandu Tribhuvan
36h 21m
2 stops
STL9:31 pmLambert-St Louis
$5,867

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 June 25, 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 10/20

7:00 am-5:20 pm

2 stops47h 35m

Kathmandu Tribhuvan

Wed 10/28

9:35 am-11:59 pm

2 stops49h 09m

$1,297

St. LouisKathmandu

STL - KTM

STLKTM

Lambert-St Louis

Wed 7/15

6:02 am-2:15 pm

2 stops45h 28m

Kathmandu Tribhuvan

Fri 7/31

3:30 pm-11:32 pm

2 stops42h 47m

$1,413

St. LouisKathmandu

STL - KTM

STLKTM

Lambert-St Louis

Thu 9/10

6:29 am-8:50 am

2 stops39h 36m

Kathmandu Tribhuvan

Thu 10/22

6:00 pm-2:45 pm

2 stops31h 30m

$1,436

St. LouisKathmandu

STL - KTM

STLKTM

Lambert-St Louis

Tue 10/20

4:40 pm-5:20 pm

2 stops61h 55m

Kathmandu Tribhuvan

Wed 10/28

11:05 am-2:45 pm

2 stops38h 25m

$1,462

St. LouisKathmandu

STL - KTM

STLKTM

Lambert-St Louis

Sun 9/20

6:29 am-5:20 pm

2 stops48h 06m

Kathmandu Tribhuvan

Thu 9/24

6:00 pm-11:59 pm

2 stops40h 44m

$1,467

St. LouisKathmandu

STL - KTM

STLKTM

Lambert-St Louis

Sun 10/18

7:00 am-4:45 pm

2 stops47h 00m

Kathmandu Tribhuvan

Mon 11/30

11:05 am-7:27 pm

2 stops44h 07m

$1,468

St. LouisKathmandu

STL - KTM

STLKTM

Lambert-St Louis

Thu 9/24

6:29 am-8:50 am

2 stops39h 36m

Kathmandu Tribhuvan

Mon 9/28

6:45 pm-2:21 pm

2 stops54h 21m

$1,474

St. LouisKathmandu

STL - KTM

STLKTM

Lambert-St Louis

Thu 9/24

6:29 am-5:20 pm

2 stops48h 06m

Kathmandu Tribhuvan

Mon 9/28

6:45 pm-2:21 pm

2 stops54h 21m

$1,477
Quickest round-trip

St. LouisKathmandu

STL - KTM

STLKTM

Lambert-St Louis

Sun 8/2

8:38 am-8:50 am

2 stops37h 27m

Kathmandu Tribhuvan

Wed 12/16

6:45 pm-3:00 pm

2 stops32h 00m

$1,523

St. LouisKathmandu

STL - KTM

STLKTM

Lambert-St Louis

Thu 8/20

6:45 pm-8:50 am

2 stops27h 20m

Kathmandu Tribhuvan

Thu 9/3

10:05 am-11:59 pm

2 stops48h 39m

$1,524

Flights are sorted by cheapest round-trip flights first.

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

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 typical price of a round-trip flight between St. Louis and Kathmandu?

What is the cheapest month to fly to Kathmandu?

The month of July is another great option to travel to Kathmandu, with average flight prices from St. Louis averaging around $1,395.

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 $1,606 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 $1,472 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

37h 27m

Direct flights

None
The fastest flight from St. Louis to Kathmandu takes 37h 27m
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 37h 27m 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 $1,257Free CancellationRating
7.3
3,730 reviews
Search Qatar Airways flights
Cathay PacificPriceFrom $1,295Free CancellationRating
7.6
1,391 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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Fly your favorite airline to Kathmandu

Airlines are sorted and displayed according to clicks in the past 7 days on momondo
Qatar Airways
Cathay Pacific