$645 Cheap Flights from Houston (IAH) to Kathmandu (KTM)

View $645 flight on Mon, Apr 6, 2026Opens in a new window

Popular airlines from George Bush Intercontinental Airport (IAH) to Tribhuvan Intl. Airport (KTM)

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Cheap Flights from Houston to Kathmandu (IAH-KTM)

Prices were available within the past 7 days and start at $645 for one-way flights and $1,271 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Turkish Airlines
Wed, Aug 13 - Tue, Sep 23
IAH
Houston
KTM
Kathmandu
$1,271 Roundtrip, found 11 hours ago
$1,271
Roundtrip
found 11 hours ago
Select Turkish Airlines flight, departing Wed, Aug 13 from Houston to Kathmandu, returning Tue, Sep 23, priced at $1,271 found 11 hours ago
Turkish Airlines
Wed, Aug 20 - Tue, Sep 16
IAH
Houston
KTM
Kathmandu
$1,271 Roundtrip, found 3 days ago
$1,271
Roundtrip
found 3 days ago
Select Turkish Airlines flight, departing Wed, Aug 20 from Houston to Kathmandu, returning Tue, Sep 16, priced at $1,271 found 3 days ago
United
Wed, Jan 21 - Tue, Mar 31
IAH
Houston
KTM
Kathmandu
$1,282 Roundtrip, found 2 days ago
$1,282
Roundtrip
found 2 days ago
Select United flight, departing Wed, Jan 21 from Houston to Kathmandu, returning Tue, Mar 31, priced at $1,282 found 2 days ago
Turkish Airlines
Sun, Jan 18 - Thu, Feb 5
IAH
Houston
KTM
Kathmandu
$1,291 Roundtrip, found 2 hours ago
$1,291
Roundtrip
found 2 hours ago
Select Turkish Airlines flight, departing Sun, Jan 18 from Houston to Kathmandu, returning Thu, Feb 5, priced at $1,291 found 2 hours ago
Turkish Airlines
Sun, Jan 18 - Tue, Jan 27
IAH
Houston
KTM
Kathmandu
$1,291 Roundtrip, found 3 days ago
$1,291
Roundtrip
found 3 days ago
Select Turkish Airlines flight, departing Sun, Jan 18 from Houston to Kathmandu, returning Tue, Jan 27, priced at $1,291 found 3 days ago
Turkish Airlines
Tue, Jan 13 - Thu, Feb 5
IAH
Houston
KTM
Kathmandu
$1,301 Roundtrip, found 2 hours ago
$1,301
Roundtrip
found 2 hours ago
Select Turkish Airlines flight, departing Tue, Jan 13 from Houston to Kathmandu, returning Thu, Feb 5, priced at $1,301 found 2 hours ago
Turkish Airlines
Tue, Aug 19 - Tue, Sep 16
IAH
Houston
KTM
Kathmandu
$1,301 Roundtrip, found 3 days ago
$1,301
Roundtrip
found 3 days ago
Select Turkish Airlines flight, departing Tue, Aug 19 from Houston to Kathmandu, returning Tue, Sep 16, priced at $1,301 found 3 days ago
Singapore Airlines
Wed, Jan 7 - Wed, Jan 21
IAH
Houston
KTM
Kathmandu
$1,384 Roundtrip, found 4 days ago
$1,384
Roundtrip
found 4 days ago
Select Singapore Airlines flight, departing Wed, Jan 7 from Houston to Kathmandu, returning Wed, Jan 21, priced at $1,384 found 4 days ago
Qatar Airways
Wed, Oct 15 - Wed, Oct 22
IAH
Houston
KTM
Kathmandu
$1,461 Roundtrip, just found
$1,461
Roundtrip
just found
Select Qatar Airways flight, departing Wed, Oct 15 from Houston to Kathmandu, returning Wed, Oct 22, priced at $1,461 just found
Emirates
Sun, Jan 4 - Mon, Feb 2
IAH
Houston
KTM
Kathmandu
$1,691 Roundtrip, found 1 hour ago
$1,691
Roundtrip
found 1 hour ago
Select Emirates flight, departing Sun, Jan 4 from Houston to Kathmandu, returning Mon, Feb 2, priced at $1,691 found 1 hour ago

Find the cheapest month to fly from Houston (IAH) to Kathmandu (KTM)

September is typically the cheapest month to fly

From $1,258 - $1,928 per traveler.

Graph displaying average flight prices per month

Alternative airports near Kathmandu

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Tribhuvan Intl. KTM. Cheapest and Closest option available. Average driving time to city center is 6 minutes. Flights from $1,699
KTM
Tribhuvan Intl.
CheapestClosest
Average driving time to city center6 min
Flights from $1,699
Flights from Houston (IAH) to Kathmandu (KTM)
Origin airport
George Bush Intercontinental
Destination airport
Tribhuvan Intl.
Airlines serving
Cathay Pacific, Emirates, KLM, Korean Air, Malaysia Airlines, Qatar Airways, Singapore Airlines, SriLankan Airlines, Turkish Airlines
Roundtrip price
$1,270
Distance
8450 mi

Houston to Kathmandu Flights

The cheapest times to fly from Houston to Kathmandu

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Houston to Kathmandu are during the month of August. You can find some of the cheapest flights from Houston to Kathmandu with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Houston to Kathmandu

Sunday is one of the best days to book for cheap flights from Houston to Kathmandu: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Houston to Kathmandu

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Houston to Kathmandu in 2025. You can also book with separate airlines for your outbound and return journeys, from $645 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Houston to Kathmandu flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Houston to Kathmandu airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from George Bush Intercontinental Airport (IAH) to Tribhuvan Intl. Airport (KTM) cost?
Discover the latest flight deals from IAH to KTM by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from IAH to KTM?
The cheapest flights from IAH to KTM are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from IAH to KTM?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from IAH to KTM. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from George Bush Intercontinental Airport (IAH) to Tribhuvan Intl. Airport (KTM)?
There are no daily nonstop flights departing from George Bush Intercontinental Airport (IAH) to Tribhuvan Intl. Airport (KTM). But you can choose flights with layovers. Filter your search on Expedia to include one or more stops, and you'll be on your way in no time.
What day of the week has the most flights from IAH to KTM?
You'll generally find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can vary from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from George Bush Intercontinental Airport (IAH) to Tribhuvan Intl. Airport (KTM)?
To avoid possible delays on the George Bush Intercontinental Airport (IAH) to Tribhuvan Intl. Airport (KTM) route, fly before 3 PM. Later departures are 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from George Bush Intercontinental Airport (IAH) to Tribhuvan Intl. Airport (KTM) last-minute?
Booking your flight from IAH to KTM right before your journey is typically more expensive. But if you're flexible with your departure times and dates, you could grab a cheap last-minute fare.
Is it cheaper to book an IAH to KTM flight and hotel package?
Compared with arranging hotels and flights separately, booking an IAH to KTM flight and hotel package with Expedia could lead to significant savings. Better still, having everything in one easy place will take the hassle out of travel planning. Simply secure your flights and select from our wide range of hotels, then customize your trip with extras like activities, tours and car rentals.
Can I cancel or change the date of my flight from George Bush Intercontinental Airport (IAH) to Tribhuvan Intl. Airport (KTM)?
Typically, you can cancel or modify your IAH to KTM flight. However, additional fees may apply, especially if you booked more than 24 hours ago. Double-check your itinerary for the airline's fees and policies on flight changes, or if you'd like further information, visit our Customer Service portal.

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*Available to One Key members.