How long is the flight from Helena to Southeast Asia?

Airlines like United Airlines fly from Helena to Southeast Asia in about 39h 10m. The time it takes to get you to your destination can typically vary by up to . Helena and Southeast Asia are separated by a distance of 7797 mi.

In terms of precipitation, rainfall in Southeast Asia ranges from 0.4 - 15.7 inches per month. July is typically the wettest month, when rainfall can reach 15.7 in. February is typically the driest time to visit Southeast Asia when rainfall is around 0.4 in.

If weather is an important factor for your trip to Southeast Asia, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 78.8 F).

What is the cheapest time of day to fly from HLN to YJX?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Helena to Southeast Asia as you normally would.

What airport do you fly from for flights from Helena to Southeast Asia?

Most people fly from Helena (HLN) if they book a flight from Helena to Southeast Asia. Helena is conveniently located just 2.7 mi from Helena’s city center.

Can I find deals for flights from Helena to Southeast Asia that include hotel bookings?

Yes. In addition to deals on Helena to Southeast Asia flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Helena to Southeast Asia?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Helena to Southeast Asia.

Can I find deals for business class flights from Helena to Southeast Asia?

Yes. Cheapflights offers flight deals from Helena to Southeast Asia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$709+ Flights from Helena to Southeast Asia

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from Helena to Southeast Asia with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Helena to Southeast Asia

Cheapest

Best

Cheapest flights from Helena to Southeast Asia
Explore the most affordable flight options available from Helena to Southeast Asia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 2, 2026.

Sun 9/67:00 am

HLN

MNL

2 stops32h 55m

United Airlines

Thu 9/109:20 pm

MNL

HLN

2 stops54h 07m

United Airlines

Deal found 1/30

$709

Sat 3/76:15 am

HLN

BKK

3 stops39h 10m

United Airlines

Wed 3/117:10 am

BKK

HLN

2 stops27h 15m

United Airlines

Deal found 1/31

$1,183

Sat 3/74:36 pm

HLN

BKK

2 stops40h 44m

Korean Air

Wed 3/119:40 am

BKK

HLN

2 stops43h 19m

Korean Air

Deal found 1/30

$1,233

Find flight deals from Helena to Southeast Asia

Most accurate provider	Expedia 1 star
Most trusted provider	Expedia 3 stars
Round-trip from	$1,183 (United Airlines)

Provider with most accurate pricing for Helena-Manila Ninoy Aquino Intl flight deals.

Search Deals

Provider most trusted by Cheapflights users for Helena-Manila Ninoy Aquino Intl flights.

Search Deals

From Helena to Southeast Asia

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from Helena to Southeast Asia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

HelenaBangkok

HLN - BKK

HLNBKK

Helena

Sat 3/7

6:15 am-11:25 am

3 stops39h 10m

Bangkok Suvarnabhumi

Wed 3/11

7:10 am-9:25 pm

2 stops27h 15m

$1,183

HelenaBangkok

HLN - BKK

HLNBKK

Helena

Sat 3/7

4:36 pm-11:20 pm

2 stops40h 44m

Bangkok Suvarnabhumi

Wed 3/11

9:40 am-3:59 pm

2 stops43h 19m

$1,233

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/31

Best time to book a flight from Helena to Southeast Asia

Have a flexible travel schedule? Discover the best time to fly to Southeast Asia from Helena with our price prediction graph.

HLN-MNL

HLN-BKK

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 Helena to Southeast Asia

HLN-zzYJX

HLN-MNL

HLN-BKK

No data available for this route at this time. Please check back soon.

Related info for your journey

What airport do you fly from for flights from Helena to Southeast Asia?
Most people fly from Helena (HLN) if they book a flight from Helena to Southeast Asia. Helena is conveniently located just 2.7 mi from Helena’s city center.
How long is the flight from Helena to Southeast Asia?
Airlines like United Airlines fly from Helena to Southeast Asia in about 39h 10m. The time it takes to get you to your destination can typically vary by up to . Helena and Southeast Asia are separated by a distance of 7797 mi.
Can I find deals for flights from Helena to Southeast Asia that include hotel bookings?
Yes. In addition to deals on Helena to Southeast Asia flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Helena to Southeast Asia?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Helena to Southeast Asia.
Can I find deals for business class flights from Helena to Southeast Asia?
Yes. Cheapflights offers flight deals from Helena to Southeast Asia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Helena to Southeast Asia

Bozeman to Narita flights

Bozeman to Haneda flights

Missoula to Suvarnabhumi flights

Missoula to Narita flights

Billings to Suvarnabhumi flights

Billings to Manila flights

Missoula to Haneda flights

Bozeman to Denpasar flights

Billings to Haneda flights

Billings to Narita flights

Great Falls to Manila flights

Bozeman to Suvarnabhumi flights

Missoula to Manila flights

Missoula to Incheon Intl flights

Bozeman to Hongqiao Intl flights

Billings to Ho Chi Minh City flights

Great Falls to Narita flights

Bozeman to Kansai Intl flights

Bozeman to Kathmandu flights

Bozeman to Pu Dong flights

Bozeman to Taiwan Taoyuan Intl flights

Helena to Suvarnabhumi flights

Great Falls to Haneda flights

Helena to Okinawa flights

Billings to Chubu Centrair Intl flights

Kalispell to Denpasar flights

Kalispell to Bangalore flights

Kalispell to Suvarnabhumi flights

Missoula to Denpasar flights

Missoula to Hong Kong flights

Missoula to Okinawa flights

Bozeman to Colombo flights

Missoula to Phuket City flights

Missoula to Soekarno-Hatta Intl flights

Missoula to Capital flights

Helena to Hong Kong flights

Missoula to Singapore flights

Kalispell to Manila flights

Kalispell to Hong Kong flights

Bozeman to Cebu City flights

Bozeman to Hong Kong flights

Bozeman to Okinawa flights

Complete your trip

Kastrup Copenhagen Airport car rentals

Madrid Barajas Airport car rentals

Bangkok Suvarnabhumi Airport car rentals

Los Angeles Airport car rentals

Incheon Intl Airport car rentals

Barcelona-El Prat Airport car rentals

Miami Airport car rentals

Manila Ninoy Aquino Intl Airport car rentals

Amsterdam Schiphol Airport car rentals

Lisbon Humberto Delgado Airport car rentals

San Francisco Airport car rentals

Frankfurt am Main Airport car rentals

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$709+ Cheap flights from Helena (HLN) to Southeast Asia

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/6. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Helena to Southeast Asia with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Helena to Southeast Asia

Cheapest flights from Helena to Southeast AsiaExplore the most affordable flight options available from Helena to Southeast Asia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 2, 2026.

Explore the most affordable flight options available from Helena to Southeast Asia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 2, 2026.

Best flights from Helena to Southeast AsiaDiscover carefully curated flight deals from Helena to Southeast Asia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 2, 2026.

Discover carefully curated flight deals from Helena to Southeast Asia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 2, 2026.

Find flight deals from Helena to Southeast Asia

Keep the following information in mind while searching for Helena to Southeast Asia flight deals. Data was last updated February 2, 2026.

Most accurate provider

Most trusted provider

Round-trip from

Cheapflights Fare Finder

Use the filters below to find and compare flights from Helena to Southeast Asia that are best for you.

Best time to book a flight from Helena to Southeast Asia

Have a flexible travel schedule? Discover the best time to fly to Southeast Asia from Helena with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Helena to Southeast Asia

Related info for your journey

Find useful and relevant information for your journey from Helena to Southeast Asia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly from for flights from Helena to Southeast Asia?

How long is the flight from Helena to Southeast Asia?

Can I find deals for flights from Helena to Southeast Asia that include hotel bookings?

How can I find direct flights from Helena to Southeast Asia?

Can I find deals for business class flights from Helena to Southeast Asia?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Helena to Southeast Asia

See prices for flight routes from nearby airports that may be better suited for you.

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Helena to Southeast Asia
Explore the most affordable flight options available from Helena to Southeast Asia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 2, 2026.

Best flights from Helena to Southeast Asia
Discover carefully curated flight deals from Helena to Southeast Asia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 2, 2026.