$2,308 Cheap Flights from Idaho Falls (IDA) to Christiansted (STX)

View $2,308 flight on Tue, Jan 6, 2026Opens in a new window

Popular airlines from Idaho Falls Regional Airport (IDA) to Henry E. Rohlsen Airport (STX)

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Cheap Flights from Idaho Falls to Christiansted (IDA-STX)

Prices were available within the past 7 days and start at $2,308 for one-way flights and $2,729 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Tue, Jan 6 - Tue, Jan 13
IDA
Idaho Falls
STX
St. Croix Island
$2,729 Roundtrip, found 1 day ago
$2,729
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Tue, Jan 6 from Idaho Falls to St. Croix Island, returning Tue, Jan 13, priced at $2,729 found 1 day ago
Alaska Airlines
Tue, Jan 6 - Tue, Jan 13
IDA
Idaho Falls
STX
St. Croix Island
$2,953 Roundtrip, found 1 day ago
$2,953
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Tue, Jan 6 from Idaho Falls to St. Croix Island, returning Tue, Jan 13, priced at $2,953 found 1 day ago
United
Tue, Jan 6 - Tue, Jan 13
IDA
Idaho Falls
STX
St. Croix Island
$3,665 Roundtrip, found 1 day ago
$3,665
Roundtrip
found 1 day ago
Select United flight, departing Tue, Jan 6 from Idaho Falls to St. Croix Island, returning Tue, Jan 13, priced at $3,665 found 1 day ago
Alaska Airlines
Tue, Jan 6 - Tue, Jan 13
IDA
Idaho Falls
STX
St. Croix Island
$5,868 Roundtrip, found 1 day ago
$5,868
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Tue, Jan 6 from Idaho Falls to St. Croix Island, returning Tue, Jan 13, priced at $5,868 found 1 day ago
United
Tue, Jan 6 - Tue, Jan 13
IDA
Idaho Falls
STX
St. Croix Island
$6,669 Roundtrip, found 1 day ago
$6,669
Roundtrip
found 1 day ago
Select United flight, departing Tue, Jan 6 from Idaho Falls to St. Croix Island, returning Tue, Jan 13, priced at $6,669 found 1 day ago
United
Tue, Jan 6 - Tue, Jan 13
IDA
Idaho Falls
STX
St. Croix Island
$6,804 Roundtrip, found 1 day ago
$6,804
Roundtrip
found 1 day ago
Select United flight, departing Tue, Jan 6 from Idaho Falls to St. Croix Island, returning Tue, Jan 13, priced at $6,804 found 1 day ago
United
Tue, Jan 6 - Tue, Jan 13
IDA
Idaho Falls
STX
St. Croix Island
$9,778 Roundtrip, found 1 day ago
$9,778
Roundtrip
found 1 day ago
Select United flight, departing Tue, Jan 6 from Idaho Falls to St. Croix Island, returning Tue, Jan 13, priced at $9,778 found 1 day ago

Frequently asked questions

How much does a flight from Idaho Falls Regional Airport (IDA) to Henry E. Rohlsen Airport (STX) cost?
Snag a cheap one-way flight from $2,308 or cheap return flight from $2,729 from Idaho Falls Regional Airport (IDA) to Henry E. Rohlsen Airport (STX) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Idaho Falls Regional Airport (IDA) to Henry E. Rohlsen Airport (STX)?
Flying in January is a great way to save, as it's the cheapest month for flights between IDA and STX. You'll usually find the lowest fares during the off-season.
What is the cheapest airline that flies from Idaho Falls Regional Airport (IDA) to Henry E. Rohlsen Airport (STX)?
To find the cheapest airline that'll fly you from IDA to STX, use Expedia's filter tool. Tailor your search based on what's important to you, such as preferred carriers and flight duration. You can then sort your results by "Price (lowest to highest)" to discover the cheapest flight right away.
How many flights per day from Idaho Falls Regional Airport (IDA) to Henry E. Rohlsen Airport (STX)?
Direct flights from Idaho Falls Regional Airport (IDA) to Henry E. Rohlsen Airport (STX) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your travel details and pick either "1 Stop" or "2+ Stops."
What day of the week has the most flights from IDA to STX?
Friday is generally the busiest day for flights, while Tuesday is often the quietest.* Remember that flight schedules can vary based on various factors, such as the time of year and carrier.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Idaho Falls Regional Airport (IDA) to Henry E. Rohlsen Airport (STX)?
To reach Henry E. Rohlsen Airport (STX) on schedule, choose a flight that takes off from Idaho Falls Regional Airport (IDA) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this hour.**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 Idaho Falls Regional Airport (IDA) to Henry E. Rohlsen Airport (STX) last-minute?
Holding off until just before your departure to book your flight from IDA to STX often results in higher prices. While it's possible to find some last-minute discounts, they're not always guaranteed. Be flexible with your itinerary to maximize your chances of getting a bargain.
Is it cheaper to book an IDA to STX flight and hotel package?
Compared with arranging flights and hotels separately, booking an IDA to STX flight and hotel package with Expedia could lead to significant savings. Better still, having everything in one place takes the hassle out of travel planning. Simply secure your flights and select from our extensive range of hotels, then personalize your trip with extras like activities and car rentals.
Can I cancel or change the date of my flight from Idaho Falls Regional Airport (IDA) to Henry E. Rohlsen Airport (STX)?
If you reserved your IDA to STX flight in the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of fare you purchased, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal for more information.

Travel information

Travel information

Origin airport
Idaho Falls Regional
Destination airport
Henry E. Rohlsen
Roundtrip price
$2,728
Distance
3268 mi

Book with confidence

Book with confidence

Idaho Falls to Christiansted Flights

The cheapest times to fly from Idaho Falls to Christiansted

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

 

The best time to book a flight from Idaho Falls to Christiansted

Sunday is one of the best days to book for cheap flights from Idaho Falls to Christiansted: 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 Idaho Falls to Christiansted

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 Idaho Falls to Christiansted in 2025. You can also book with separate airlines for your outbound and return journeys, from $2,308 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 Idaho Falls to Christiansted 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 Idaho Falls to Christiansted 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.

 

Idaho Falls to Christiansted Flights
*Available to One Key members.