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Southeast Asia

$1,244+ Cheap flights from Sioux City (SUX) 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 10/3. Fares are subject to change and may not be available on all flights or dates of travel.
SUX — BKK
oct. 29 — nov. 51
mié. 10/29
mié. 11/5
1 adult, Economy
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Find flight deals from Sioux City to Southeast Asia

Cheapest flights from Sioux City to Southeast Asia
Explore the most affordable flight options available from Sioux City to Southeast Asia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on septiembre 29, 2025.

This United Airlines deal was found by Cheapflights users on 9/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/36:51 pmSUX - SGN
2 stops41h 24mUnited Airlines
mar. 10/77:00 amSGN - SUX
2 stops23h 14mUnited Airlines
Deal found 9/28$1,244

Best time to book a flight from Sioux City to Southeast Asia

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

What is the cheapest month to book a flight from Sioux City to Southeast Asia?

Currently, September is the cheapest month in which you can book a flight from Sioux City to Southeast Asia (average of $894). Flying from Sioux City to Southeast Asia in December is currently the most expensive (average of $1,495). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Southeast Asia

Get insights into the airlines that provide service to Southeast Asia. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Southeast Asia. Reviews last updated septiembre 29, 2025.
See what other customers who have flown with United Airlines from Sioux City to Southeast Asia have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,924 reviews

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Overall

7.4

Crew

8.1

Food

6.6

Reviews

1 / 20
4.0
Okay

Tim,Sep 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.
United Airlines
7.4
Good
8,924 reviews
United Airlines
7.4
Good
8,924 reviews

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Overall

7.4

Crew

8.1

Food

6.6

Reviews

1 / 20
4.0
Okay

Tim,Sep 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.

Related info for your journey

Find useful and relevant information for your journey from Sioux City 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 Sioux City to Southeast Asia?

    If you book a flight to Southeast Asia from Sioux City, you will be flying from Sioux Gateway, which is the city’s only airport. Sioux City Sioux Gateway (SUX) is located 7.0 mi from the center of Sioux City.

  • Can I find deals for flights from Sioux City to Southeast Asia that include hotel bookings?

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

  • How can I find direct flights from Sioux City to Southeast Asia?

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

  • Can I find deals for business class flights from Sioux City to Southeast Asia?

    Yes. Cheapflights offers flight deals from Sioux City 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.

  • What is the cheapest month to book a flight from Sioux City to Southeast Asia?

    Currently, September is the cheapest month in which you can book a flight from Sioux City to Southeast Asia (average of $894). Flying from Sioux City to Southeast Asia in December is currently the most expensive (average of $1,495). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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Top airline flying from Sioux City to Southeast Asia

Discover the top airline that operate flights from Sioux City to Southeast Asia. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated septiembre 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,026Average$1,361FlexibilityNo cancel feeOn-time69%

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