$244 Cheap Flights from Colorado Springs (COS) to Sun Valley (SUN)

View $244 flight on Fri, Sep 26, 2025Opens in a new window

Popular airlines from Colorado Springs Airport (COS) to Sun Valley, ID (SUN-Friedman Memorial)

Cheap Flights from Colorado Springs to Sun Valley (COS-SUN)

Prices were available within the past 7 days and start at $244 for one-way flights and $229 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, Oct 18 - Wed, Oct 22
COS
Colorado Springs
SUN
Sun Valley
$229 Roundtrip, found 9 hours ago
$229
Roundtrip
found 9 hours ago
Select Delta flight, departing Sat, Oct 18 from Colorado Springs to Sun Valley, returning Wed, Oct 22, priced at $229 found 9 hours ago
Delta
Sat, Oct 25 - Mon, Nov 10
COS
Colorado Springs
SUN
Sun Valley
$249 Roundtrip, found 4 days ago
$249
Roundtrip
found 4 days ago
Select Delta flight, departing Sat, Oct 25 from Colorado Springs to Sun Valley, returning Mon, Nov 10, priced at $249 found 4 days ago
Delta
Thu, Oct 2 - Wed, Oct 22
COS
Colorado Springs
SUN
Sun Valley
$259 Roundtrip, found 4 days ago
$259
Roundtrip
found 4 days ago
Select Delta flight, departing Thu, Oct 2 from Colorado Springs to Sun Valley, returning Wed, Oct 22, priced at $259 found 4 days ago
Delta
Sun, Oct 26 - Mon, Nov 10
COS
Colorado Springs
SUN
Sun Valley
$289 Roundtrip, found 4 days ago
$289
Roundtrip
found 4 days ago
Select Delta flight, departing Sun, Oct 26 from Colorado Springs to Sun Valley, returning Mon, Nov 10, priced at $289 found 4 days ago
Delta
Mon, Oct 6 - Wed, Oct 22
COS
Colorado Springs
SUN
Sun Valley
$299 Roundtrip, found 4 days ago
$299
Roundtrip
found 4 days ago
Select Delta flight, departing Mon, Oct 6 from Colorado Springs to Sun Valley, returning Wed, Oct 22, priced at $299 found 4 days ago
United
Mon, Oct 20 - Sat, Oct 25
COS
Colorado Springs
SUN
Sun Valley
$303 Roundtrip, found 9 hours ago
$303
Roundtrip
found 9 hours ago
Select United flight, departing Mon, Oct 20 from Colorado Springs to Sun Valley, returning Sat, Oct 25, priced at $303 found 9 hours ago
Delta
Fri, Oct 17 - Wed, Oct 22
COS
Colorado Springs
SUN
Sun Valley
$304 Roundtrip, found 9 hours ago
$304
Roundtrip
found 9 hours ago
Select Delta flight, departing Fri, Oct 17 from Colorado Springs to Sun Valley, returning Wed, Oct 22, priced at $304 found 9 hours ago
United
Mon, Oct 20 - Sat, Oct 25
COS
Colorado Springs
SUN
Sun Valley
$310 Roundtrip, found 9 hours ago
$310
Roundtrip
found 9 hours ago
Select United flight, departing Mon, Oct 20 from Colorado Springs to Sun Valley, returning Sat, Oct 25, priced at $310 found 9 hours ago
United
Mon, Oct 20 - Sat, Oct 25
COS
Colorado Springs
SUN
Sun Valley
$313 Roundtrip, found 9 hours ago
$313
Roundtrip
found 9 hours ago
Select United flight, departing Mon, Oct 20 from Colorado Springs to Sun Valley, returning Sat, Oct 25, priced at $313 found 9 hours ago
United
Mon, Oct 20 - Sat, Oct 25
COS
Colorado Springs
SUN
Sun Valley
$314 Roundtrip, found 9 hours ago
$314
Roundtrip
found 9 hours ago
Select United flight, departing Mon, Oct 20 from Colorado Springs to Sun Valley, returning Sat, Oct 25, priced at $314 found 9 hours ago
Flights from Colorado Springs (COS) to Sun Valley (SUN)
Origin airport
Colorado Springs
Destination airport
Friedman Memorial
Airlines serving
Delta, United
Roundtrip price
$228
Distance
595 mi

Colorado Springs to Sun Valley Flights

The cheapest times to fly from Colorado Springs to Sun Valley

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 Colorado Springs to Sun Valley are during the month of October. You can find some of the cheapest flights from Colorado Springs to Sun Valley with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Colorado Springs to Sun Valley

Sunday is one of the best days to book for cheap flights from Colorado Springs to Sun Valley: 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 Colorado Springs to Sun Valley

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 Colorado Springs to Sun Valley in 2025. You can also book with separate airlines for your outbound and return journeys, from $244 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 Colorado Springs to Sun Valley 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 Colorado Springs to Sun Valley 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 Colorado Springs Airport (COS) to Friedman Memorial Airport (SUN) cost?
Lock in a cheap one-way flight from $244 or cheap return flight from $229 from Colorado Springs Airport (COS) to Friedman Memorial Airport (SUN) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Colorado Springs Airport (COS) to Friedman Memorial Airport (SUN)?
Traveling in October can help you save, as it's the cheapest month for flights between COS and SUN. You'll usually find the lowest fares during the off-season.
What is the cheapest airline that flies from Colorado Springs Airport (COS) to Friedman Memorial Airport (SUN)?
Expedia's filter tool lets you easily compare different airlines, travel time and fares all in one place. Select your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest COS to SUN flight.
How many flights per day from Colorado Springs Airport (COS) to Friedman Memorial Airport (SUN)?
There aren't any daily nonstop flights available from Colorado Springs Airport (COS) to Friedman Memorial Airport (SUN). But you can opt for flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be cruising above the clouds before you know it.
What day of the week has the most flights from COS to SUN?
Usually you'll find the greatest selection of flight options on a Friday. Tuesdays tend to be the quietest.* However, this can vary based on the season, carrier and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Colorado Springs Airport (COS) to Friedman Memorial Airport (SUN)?
Select a flight from Colorado Springs Airport (COS) to Friedman Memorial Airport (SUN) that takes off before 3 PM to reduce the likelihood of delays and cancellations. Departures later than this are on average 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 Colorado Springs Airport (COS) to Friedman Memorial Airport (SUN) last-minute?
Holding off until right before your break to book a flight from COS to SUN generally means paying more. While you may find some last-minute offers, there's no guarantee. Keep your travel plans flexible to boost your chances of snagging a bargain.
Is it cheaper to book a COS to SUN flight and hotel package?
Compared with arranging hotels and flights separately, booking a COS to SUN flight and hotel package with Expedia could lead to significant savings. What's more, having everything in one easy place will take the stress out of travel planning. Simply pick your flights and select from our extensive range of stays, then customize your trip with other add-ons like tours and car rentals.
Can I cancel or change the date of my flight from Colorado Springs Airport (COS) to Friedman Memorial Airport (SUN)?
If you reserved your COS to SUN flight in the last 24 hours, you may be able to cancel or modify it without fees. Depending on the airline and the fare type 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 details.

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*Available to One Key members.