$220 Cheap Flights from Chicago (MDW) to Sun Valley (SUN)

View $220 flight on Tue, Dec 16, 2025Opens in a new window

Popular airlines from Chicago Midway Airport (MDW) to Sun Valley, ID (SUN-Friedman Memorial)

Cheap Flights from Chicago to Sun Valley (MDW-SUN)

Prices were available within the past 7 days and start at $220 for one-way flights and $311 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, Oct 28 - Wed, Nov 12
MDW
Chicago
SUN
Sun Valley
$311 Roundtrip, found 2 days ago
$311
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, Oct 28 from Chicago to Sun Valley, returning Wed, Nov 12, priced at $311 found 2 days ago
Delta
Mon, Oct 27 - Wed, Nov 12
MDW
Chicago
SUN
Sun Valley
$336 Roundtrip, found 2 days ago
$336
Roundtrip
found 2 days ago
Select Delta flight, departing Mon, Oct 27 from Chicago to Sun Valley, returning Wed, Nov 12, priced at $336 found 2 days ago
Delta
Tue, Oct 28 - Mon, Nov 17
MDW
Chicago
SUN
Sun Valley
$339 Roundtrip, found 2 days ago
$339
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, Oct 28 from Chicago to Sun Valley, returning Mon, Nov 17, priced at $339 found 2 days ago
Delta
Sat, Oct 11 - Sat, Oct 25
MDW
Chicago
SUN
Sun Valley
$361 Roundtrip, found 2 days ago
$361
Roundtrip
found 2 days ago
Select Delta flight, departing Sat, Oct 11 from Chicago to Sun Valley, returning Sat, Oct 25, priced at $361 found 2 days ago
Delta
Tue, Oct 28 - Sun, Nov 9
MDW
Chicago
SUN
Sun Valley
$364 Roundtrip, found 2 days ago
$364
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, Oct 28 from Chicago to Sun Valley, returning Sun, Nov 9, priced at $364 found 2 days ago
Delta
Tue, Oct 28 - Sun, Nov 2
MDW
Chicago
SUN
Sun Valley
$369 Roundtrip, found 2 days ago
$369
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, Oct 28 from Chicago to Sun Valley, returning Sun, Nov 2, priced at $369 found 2 days ago
Delta
Thu, Oct 30 - Wed, Nov 12
MDW
Chicago
SUN
Sun Valley
$379 Roundtrip, found 2 days ago
$379
Roundtrip
found 2 days ago
Select Delta flight, departing Thu, Oct 30 from Chicago to Sun Valley, returning Wed, Nov 12, priced at $379 found 2 days ago
Delta
Tue, Oct 28 - Fri, Nov 14
MDW
Chicago
SUN
Sun Valley
$386 Roundtrip, found 2 days ago
$386
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, Oct 28 from Chicago to Sun Valley, returning Fri, Nov 14, priced at $386 found 2 days ago
Delta
Mon, Oct 27 - Sun, Nov 9
MDW
Chicago
SUN
Sun Valley
$389 Roundtrip, found 2 days ago
$389
Roundtrip
found 2 days ago
Select Delta flight, departing Mon, Oct 27 from Chicago to Sun Valley, returning Sun, Nov 9, priced at $389 found 2 days ago
Delta
Mon, Oct 27 - Sun, Nov 2
MDW
Chicago
SUN
Sun Valley
$394 Roundtrip, found 2 days ago
$394
Roundtrip
found 2 days ago
Select Delta flight, departing Mon, Oct 27 from Chicago to Sun Valley, returning Sun, Nov 2, priced at $394 found 2 days ago

Frequently asked questions

How much does a flight from Midway Intl. Airport (MDW) to Friedman Memorial Airport (SUN) cost?
Get a cheap one-way flight from $220 or cheap return flight from $311 from Midway Intl. Airport (MDW) 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 Midway Intl. Airport (MDW) to Friedman Memorial Airport (SUN)?
October is the cheapest month to fly from MDW to SUN. Traveling during an off-peak travel window is often the key to landing a great deal.
Which airlines fly direct from Midway Intl. Airport (MDW) to Friedman Memorial Airport (SUN)?
While Chicago, IL (MDW-Midway Intl.) doesn't offer any direct flights to Friedman Memorial Airport (SUN), other airports have nonstop routes. Taking off from O'Hare Intl. Airport (ORD) will get you to Sun Valley without any detours.
What is the cheapest airline that flies from Midway Intl. Airport (MDW) to Friedman Memorial Airport (SUN)?
Expedia's filter tool lets you easily compare different airlines, travel time and fares all in one place. Tailor the search to your trip, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest MDW to SUN flight.
How many flights per day from Midway Intl. Airport (MDW) to Friedman Memorial Airport (SUN)?
There are no daily nonstop flights departing from Midway Intl. Airport (MDW) to Friedman Memorial Airport (SUN). But you can choose flights with layovers. Filter your search results on Expedia to include one or two stops, and you'll be on your way in no time at all.
What day of the week has the most flights from MDW to SUN?
Generally you'll have the most choice when it comes to flights on a Friday. Tuesdays are often the quietest.* But this can vary based on the airline, season 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 Midway Intl. Airport (MDW) to Friedman Memorial Airport (SUN)?
To avoid possible delays on the Midway Intl. Airport (MDW) to Friedman Memorial Airport (SUN) route, travel before 3 PM. Departures after this hour are 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 Midway Intl. Airport (MDW) to Friedman Memorial Airport (SUN) last-minute?
Last-minute fares from MDW to SUN are generally more expensive. For the lowest rates, start searching for flights well in advance. That being said, if you can play around with your travel dates, you may land a cheap ticket right before your trip.
Is it cheaper to book a MDW to SUN flight and hotel package?
Securing a MDW to SUN flight and hotel package is typically cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip in one place. Choose from our extensive range of hotels and then add car rentals, activities and flights to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Midway Intl. Airport (MDW) to Friedman Memorial Airport (SUN)?
You can usually reschedule or cancel your MDW to SUN flight. However, for bookings made more than 24 hours ago, additional fees may apply. Check your airline's policies in your itinerary to see what changes are allowed and whether any costs are involved. You'll also find more details on our Customer Service portal.

Travel information

Travel information

Origin airport
Midway Intl.
Destination airport
Friedman Memorial
Roundtrip price
$311
Distance
1349 mi

Book with confidence

Book with confidence

Chicago to Sun Valley Flights

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

 

The best time to book a flight from Chicago to Sun Valley

Sunday is one of the best days to book for cheap flights from Chicago 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 Chicago 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 Chicago to Sun Valley in 2025. You can also book with separate airlines for your outbound and return journeys, from $220 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 Chicago 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 Chicago 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.

 

Chicago to Sun Valley Flights

Explore a world of travel with Expedia

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*Available to One Key members.