$511 Cheap Flights from Great Falls (GTF) to Singapore (SIN)

View $511 flight on Mon, Nov 24, 2025Opens in a new window

Popular airlines from Great Falls, MT (GTF-Great Falls Intl.) to Singapore Changi Airport (SIN)

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Cheap Flights from Great Falls to Singapore (GTF-SIN)

Prices were available within the past 7 days and start at $511 for one-way flights and $2,014 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Fri, Jul 18 - Wed, Jul 23
GTF
Great Falls
SIN
Singapore
$2,014 Roundtrip, found 12 hours ago
$2,014
Roundtrip
found 12 hours ago
Select Alaska Airlines flight, departing Fri, Jul 18 from Great Falls to Singapore, returning Wed, Jul 23, priced at $2,014 found 12 hours ago
Alaska Airlines
Fri, Jul 18 - Wed, Jul 23
GTF
Great Falls
SIN
Singapore
$2,114 Roundtrip, found 12 hours ago
$2,114
Roundtrip
found 12 hours ago
Select Alaska Airlines flight, departing Fri, Jul 18 from Great Falls to Singapore, returning Wed, Jul 23, priced at $2,114 found 12 hours ago
Alaska Airlines
Fri, Jul 18 - Wed, Jul 23
GTF
Great Falls
SIN
Singapore
$3,112 Roundtrip, found 12 hours ago
$3,112
Roundtrip
found 12 hours ago
Select Alaska Airlines flight, departing Fri, Jul 18 from Great Falls to Singapore, returning Wed, Jul 23, priced at $3,112 found 12 hours ago
Alaska Airlines
Fri, Jul 18 - Wed, Jul 23
GTF
Great Falls
SIN
Singapore
$3,142 Roundtrip, found 12 hours ago
$3,142
Roundtrip
found 12 hours ago
Select Alaska Airlines flight, departing Fri, Jul 18 from Great Falls to Singapore, returning Wed, Jul 23, priced at $3,142 found 12 hours ago
Alaska Airlines
Fri, Jul 18 - Wed, Jul 23
GTF
Great Falls
SIN
Singapore
$3,150 Roundtrip, found 12 hours ago
$3,150
Roundtrip
found 12 hours ago
Select Alaska Airlines flight, departing Fri, Jul 18 from Great Falls to Singapore, returning Wed, Jul 23, priced at $3,150 found 12 hours ago
Alaska Airlines
Fri, Jul 18 - Wed, Jul 23
GTF
Great Falls
SIN
Singapore
$3,346 Roundtrip, found 12 hours ago
$3,346
Roundtrip
found 12 hours ago
Select Alaska Airlines flight, departing Fri, Jul 18 from Great Falls to Singapore, returning Wed, Jul 23, priced at $3,346 found 12 hours ago
Alaska Airlines
Fri, Jul 18 - Wed, Jul 23
GTF
Great Falls
SIN
Singapore
$4,422 Roundtrip, found 12 hours ago
$4,422
Roundtrip
found 12 hours ago
Select Alaska Airlines flight, departing Fri, Jul 18 from Great Falls to Singapore, returning Wed, Jul 23, priced at $4,422 found 12 hours ago
Alaska Airlines
Fri, Jul 18 - Wed, Jul 23
GTF
Great Falls
SIN
Singapore
$4,490 Roundtrip, found 12 hours ago
$4,490
Roundtrip
found 12 hours ago
Select Alaska Airlines flight, departing Fri, Jul 18 from Great Falls to Singapore, returning Wed, Jul 23, priced at $4,490 found 12 hours ago
Alaska Airlines
Fri, Jul 18 - Wed, Jul 23
GTF
Great Falls
SIN
Singapore
$4,506 Roundtrip, found 12 hours ago
$4,506
Roundtrip
found 12 hours ago
Select Alaska Airlines flight, departing Fri, Jul 18 from Great Falls to Singapore, returning Wed, Jul 23, priced at $4,506 found 12 hours ago
Alaska Airlines
Fri, Jul 18 - Wed, Jul 23
GTF
Great Falls
SIN
Singapore
$5,317 Roundtrip, found 12 hours ago
$5,317
Roundtrip
found 12 hours ago
Select Alaska Airlines flight, departing Fri, Jul 18 from Great Falls to Singapore, returning Wed, Jul 23, priced at $5,317 found 12 hours ago
Flights from Great Falls (GTF) to Singapore (SIN)
Origin airport
Great Falls Intl.
Destination airport
Changi
Roundtrip price
$2,013
Distance
8446 mi

Great Falls to Singapore Flights

The cheapest times to fly from Great Falls to Singapore

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 Great Falls to Singapore are during the month of July. You can find some of the cheapest flights from Great Falls to Singapore with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Great Falls to Singapore

Sunday is one of the best days to book for cheap flights from Great Falls to Singapore: 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 Great Falls to Singapore

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 Great Falls to Singapore in 2025. You can also book with separate airlines for your outbound and return journeys, from $511 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 Great Falls to Singapore 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 Great Falls to Singapore 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 Great Falls Intl. Airport (GTF) to Changi Airport (SIN) cost?
Discover the latest flight deals from GTF to SIN 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 GTF to SIN?
The cheapest flights from GTF to SIN 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 GTF to SIN?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from GTF to SIN. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Great Falls Intl. Airport (GTF) to Changi Airport (SIN)?
Direct flights from Great Falls Intl. Airport (GTF) to Changi Airport (SIN) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filters. Enter your dates and select either "1 Stop" or "2+ Stops."
What day of the week has the most flights from GTF to SIN?
Friday is typically the busiest day for flights, while Tuesday is often the quietest.* Just remember that flight schedules can vary depending on various factors, including the season and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Great Falls Intl. Airport (GTF) to Changi Airport (SIN)?
To avoid possible delays on the Great Falls Intl. Airport (GTF) to Changi Airport (SIN) route, travel before 3 PM. Departures after this time have a 22% higher chance of cancellation.**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 Great Falls Intl. Airport (GTF) to Changi Airport (SIN) last-minute?
Waiting until right before your break to book a flight from GTF to SIN often results in higher prices. Although you may find some last-minute discounts, they're not always guaranteed. Allow some flexibility in your schedule for a better chance of scoring a bargain.
Is it cheaper to book a GTF to SIN flight and hotel package?
You'll typically save money by booking a GTF to SIN flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one convenient place. After choosing your ideal flights and accommodations, you can add extras like tours, activities and car rentals.
Can I cancel or change the date of my flight from Great Falls Intl. Airport (GTF) to Changi Airport (SIN)?
Typically, you can cancel or modify your GTF to SIN flight. However, additional charges may apply, especially if you booked more than 24 hours ago. Double-check your itinerary for the airline's guidelines and fees on flight changes, or if you want further information, head to our Customer Service portal.

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*Available to One Key members.