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Cheap flights from St. Louis to Kathmandu from $748

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 10/19. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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
7:00 am - 9:50 am
STL
-
KTM
40h 05m
2 stops
Qatar Airways Logo
9:35 am - 11:59 pm
KTM
-
STL
49h 09m
2 stops
$1,366Qatar Airways
Tue, Oct 20 - Wed, Oct 28
Qatar Airways Logo
12:43 pm - 8:50 am
STL
-
KTM
33h 22m
2 stops
Qatar Airways Logo
6:00 pm - 9:23 pm
KTM
-
STL
38h 08m
2 stops
$1,510Qatar Airways
Wed, Sep 9 - Sun, Sep 13
Multiple Airlines Logo
7:56 pm - 4:45 pm
STL
-
KTM
58h 04m
2 stops
Multiple Airlines Logo
6:00 pm - 7:51 pm
KTM
-
STL
36h 36m
2 stops
$1,584Multiple Airlines
Mon, Jun 22 - Wed, Jul 29
Multiple Airlines Logo
7:56 pm - 4:45 pm
STL
-
KTM
58h 04m
2 stops
Multiple Airlines Logo
6:00 pm - 6:33 pm
KTM
-
STL
35h 18m
2 stops
$1,585Multiple Airlines
Mon, Jun 22 - Wed, Jul 29
Multiple Airlines Logo
7:56 pm - 4:45 pm
STL
-
KTM
58h 04m
2 stops
Multiple Airlines Logo
6:00 pm - 7:51 pm
KTM
-
STL
36h 36m
2 stops
$1,586Multiple Airlines
Mon, Jun 22 - Wed, Jul 29
Air India Logo
6:00 am - 12:50 pm
STL
-
KTM
44h 05m
2 stops
Air India Logo
1:25 pm - 3:46 pm
KTM
-
STL
37h 06m
3 stops
$1,618Air India
Sun, Jun 21 - Sun, Jun 28
Multiple Airlines Logo
2:32 pm - 10:10 am
STL
-
KTM
32h 53m
2 stops
Multiple Airlines Logo
6:00 pm - 12:16 am
KTM
-
STL
41h 01m
2 stops
$1,665Multiple Airlines
Wed, Jun 24 - Sun, Jul 5
Multiple Airlines Logo
9:09 am - 10:10 am
STL
-
KTM
38h 16m
2 stops
Multiple Airlines Logo
6:00 pm - 11:59 pm
KTM
-
STL
40h 44m
2 stops
$1,747Multiple Airlines
Wed, Jul 1 - Wed, Sep 9
Multiple Airlines Logo
6:00 am - 2:15 pm
STL
-
KTM
45h 30m
2 stops
Multiple Airlines Logo
6:00 pm - 10:57 pm
KTM
-
STL
39h 42m
2 stops
$1,819Multiple Airlines
Wed, Jun 3 - Thu, Jun 18
Multiple Airlines Logo
7:41 pm - 4:45 pm
STL
-
KTM
58h 19m
2 stops
Multiple Airlines Logo
6:00 pm - 7:36 pm
KTM
-
STL
36h 21m
2 stops
$1,851Multiple Airlines
Tue, Jun 2 - Thu, Jun 18

Qatar Airways flights from St. Louis to Kathmandu

Our best Qatar Airways deals on St. Louis to Kathmandu flight tickets
Qatar Airways
Oct 20
STL7:00 amLambert-St Louis
40h 05m
2 stops
KTM9:50 amKathmandu Tribhuvan
Oct 28
KTM9:35 amKathmandu Tribhuvan
49h 09m
2 stops
STL11:59 pmLambert-St Louis
$1,366
Qatar Airways
Sep 9
STL12:43 pmLambert-St Louis
33h 22m
2 stops
KTM8:50 amKathmandu Tribhuvan
Sep 13
KTM6:00 pmKathmandu Tribhuvan
38h 08m
2 stops
STL9:23 pmLambert-St Louis
$1,510
Qatar Airways
May 12
STL12:27 pmLambert-St Louis
39h 03m
2 stops
KTM2:15 pmKathmandu Tribhuvan
May 19
KTM10:00 amKathmandu Tribhuvan
48h 41m
2 stops
STL11:56 pmLambert-St Louis
$1,733

Air India flights from St. Louis to Kathmandu

Our best Air India deals on St. Louis to Kathmandu flight tickets
Air India
Jun 21
STL6:00 amLambert-St Louis
44h 05m
2 stops
KTM12:50 pmKathmandu Tribhuvan
Jun 28
KTM1:25 pmKathmandu Tribhuvan
37h 06m
3 stops
STL3:46 pmLambert-St Louis
$1,618
Air India
Jun 2
STL1:13 pmLambert-St Louis
44h 12m
2 stops
KTM8:10 pmKathmandu Tribhuvan
Jun 28
KTM9:10 pmKathmandu Tribhuvan
29h 21m
3 stops
STL3:46 pmLambert-St Louis
$2,372
Air India
Jun 12
STL6:00 amLambert-St Louis
31h 20m
2 stops
KTM12:05 amKathmandu Tribhuvan
Aug 16
KTM5:30 pmKathmandu Tribhuvan
32h 53m
3 stops
STL3:38 pmLambert-St Louis
$2,395

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 May 10, 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-9:50 am

2 stops40h 05m

Kathmandu Tribhuvan

Wed 10/28

9:35 am-11:59 pm

2 stops49h 09m

$1,366
Quickest round-trip

St. LouisKathmandu

STL - KTM

STLKTM

Lambert-St Louis

Wed 9/9

12:43 pm-8:50 am

2 stops33h 22m

Kathmandu Tribhuvan

Sun 9/13

6:00 pm-9:23 pm

2 stops38h 08m

$1,510

St. LouisKathmandu

STL - KTM

STLKTM

Lambert-St Louis

Mon 6/22

7:56 pm-4:45 pm

2 stops58h 04m

Kathmandu Tribhuvan

Wed 7/29

6:00 pm-7:51 pm

2 stops36h 36m

$1,584

St. LouisKathmandu

STL - KTM

STLKTM

Lambert-St Louis

Mon 6/22

7:56 pm-4:45 pm

2 stops58h 04m

Kathmandu Tribhuvan

Wed 7/29

6:00 pm-6:33 pm

2 stops35h 18m

$1,585

St. LouisKathmandu

STL - KTM

STLKTM

Lambert-St Louis

Mon 6/22

7:56 pm-4:45 pm

2 stops58h 04m

Kathmandu Tribhuvan

Wed 7/29

6:00 pm-7:51 pm

2 stops36h 36m

$1,586

St. LouisKathmandu

STL - KTM

STLKTM

Lambert-St Louis

Sun 6/21

6:00 am-12:50 pm

2 stops44h 05m

Kathmandu Tribhuvan

Sun 6/28

1:25 pm-3:46 pm

3 stops37h 06m

$1,618

St. LouisKathmandu

STL - KTM

STLKTM

Lambert-St Louis

Wed 6/24

2:32 pm-10:10 am

2 stops32h 53m

Kathmandu Tribhuvan

Sun 7/5

6:00 pm-12:16 am

2 stops41h 01m

$1,665

St. LouisKathmandu

STL - KTM

STLKTM

Lambert-St Louis

Wed 7/1

9:09 am-10:10 am

2 stops38h 16m

Kathmandu Tribhuvan

Wed 9/9

6:00 pm-11:59 pm

2 stops40h 44m

$1,747

St. LouisKathmandu

STL - KTM

STLKTM

Lambert-St Louis

Wed 6/3

6:00 am-2:15 pm

2 stops45h 30m

Kathmandu Tribhuvan

Thu 6/18

6:00 pm-10:57 pm

2 stops39h 42m

$1,819

St. LouisKathmandu

STL - KTM

STLKTM

Lambert-St Louis

Tue 6/2

7:41 pm-4:45 pm

2 stops58h 19m

Kathmandu Tribhuvan

Thu 6/18

6:00 pm-7:36 pm

2 stops36h 21m

$1,851

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 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 $1,412.

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 $1,600 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 $1,397 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

29h 54m

Direct flights

None
The fastest flight from St. Louis to Kathmandu takes 29h 54m
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 29h 54m 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
Cathay PacificPriceFrom $1,295Free CancellationRating
7.6
1,324 reviews
Search Cathay Pacific flights
Qatar AirwaysPriceFrom $1,301Free CancellationRating
7.4
3,728 reviews
Search Qatar Airways 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

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Qatar Airways
Cathay Pacific