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Cheap flights to Custer County

View €252 flight on Mon, 3 Aug 2026Opens in a new window

Popular airlines to Custer County

  • Alaska Airlines

  • United

  • Delta

  • KLM

  • American Airlines

  • Air France

  • Virgin Atlantic

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Cheap round-trip flights to Custer County

Prices were available within the past 7 days and start at €252 for one-way flights and €437 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Mon, 3 Aug - Wed, 12 Aug
ORD
Chicago
SUN
Sun Valley
€437 Return, found 7 hours ago
€437
Return
found 7 hours ago
Select United flight, departing Mon, 3 Aug from Chicago to Sun Valley, returning Wed, 12 Aug, priced at €437 found 7 hours ago
United
Mon, 3 Aug - Wed, 12 Aug
ORD
Chicago
SUN
Sun Valley
€485 Return, found 7 hours ago
€485
Return
found 7 hours ago
Select United flight, departing Mon, 3 Aug from Chicago to Sun Valley, returning Wed, 12 Aug, priced at €485 found 7 hours ago
United
Mon, 3 Aug - Wed, 12 Aug
ORD
Chicago
SUN
Sun Valley
€505 Return, found 7 hours ago
€505
Return
found 7 hours ago
Select United flight, departing Mon, 3 Aug from Chicago to Sun Valley, returning Wed, 12 Aug, priced at €505 found 7 hours ago
United
Mon, 3 Aug - Wed, 12 Aug
ORD
Chicago
SUN
Sun Valley
€511 Return, found 7 hours ago
€511
Return
found 7 hours ago
Select United flight, departing Mon, 3 Aug from Chicago to Sun Valley, returning Wed, 12 Aug, priced at €511 found 7 hours ago
United
Mon, 3 Aug - Wed, 12 Aug
ORD
Chicago
SUN
Sun Valley
€521 Return, found 7 hours ago
€521
Return
found 7 hours ago
Select United flight, departing Mon, 3 Aug from Chicago to Sun Valley, returning Wed, 12 Aug, priced at €521 found 7 hours ago
United
Mon, 3 Aug - Wed, 12 Aug
ORD
Chicago
SUN
Sun Valley
€553 Return, found 7 hours ago
€553
Return
found 7 hours ago
Select United flight, departing Mon, 3 Aug from Chicago to Sun Valley, returning Wed, 12 Aug, priced at €553 found 7 hours ago
Delta
Mon, 3 Aug - Wed, 12 Aug
ORD
Chicago
SUN
Sun Valley
€775 Return, found 7 hours ago
€775
Return
found 7 hours ago
Select Delta flight, departing Mon, 3 Aug from Chicago to Sun Valley, returning Wed, 12 Aug, priced at €775 found 7 hours ago
Lufthansa
Thu, 16 Jul - Mon, 20 Jul
KRK
Kraków
SUN
Sun Valley
€1,224 Return, found 10 hours ago
€1,224
Return
found 10 hours ago
Select Lufthansa flight, departing Thu, 16 Jul from Kraków to Sun Valley, returning Mon, 20 Jul, priced at €1,224 found 10 hours ago
KLM
Thu, 16 Jul - Mon, 20 Jul
KRK
Kraków
SUN
Sun Valley
€1,457 Return, found 10 hours ago
€1,457
Return
found 10 hours ago
Select KLM flight, departing Thu, 16 Jul from Kraków to Sun Valley, returning Mon, 20 Jul, priced at €1,457 found 10 hours ago
Air France
Thu, 16 Jul - Mon, 20 Jul
KRK
Kraków
SUN
Sun Valley
€1,666 Return, found 10 hours ago
€1,666
Return
found 10 hours ago
Select Air France flight, departing Thu, 16 Jul from Kraków to Sun Valley, returning Mon, 20 Jul, priced at €1,666 found 10 hours ago

Frequently asked questions

How do I find cheap flights to Custer County that have flexible change policies?
Search for your bargain flights to Custer County, then mark the "No change fee" box underneath the "Flexible change policies" heading. It's as simple as that. We appreciate that plans can change and flexibility is essential, so you can book with confidence with Expedia.
Which airlines fly to Custer County?
With a great selection of airlines offering flights into or near Custer County, the choice is all yours:

  • Alaska Airlines - 754 flights to or near Custer County each month, including 754 flights to Boise Airport (BOI) per month.
  • Delta Air Lines - 489 flights to or near Custer County each month, including 489 flights to Boise Airport (BOI) per month.
  • United Airlines - 303 flights to or near Custer County each month, including 303 flights to Boise Airport (BOI) per month.

How can I find cheap tickets to Custer County?
An excellent strategy for getting your hands on cheap airfares is to be flexible with your dates. Start by searching for your flight to Custer County, then click on the "flexible dates" link to compare prices for nearby days. Another good tip? Book well ahead. To give you an idea of fares, €437 was the best price for a flight to Custer County in the last seven days.
How much is a flight to Custer County?
One-way flights leaving Chicago (ORD) sold for as low as €252 in the last seven days. During this period, the price of a return journey to Custer County ranged between €437 and €1,666. If you find a bargain ticket, book immediately — these fares don't stick around.
What are the most popular airports to fly into in Custer County?
Start planning your Custer County trip by securing a seat on one of the 1,994 flights each month to Boise Airport (BOI). This is the region's main entryway.
How much is a plane ticket to Custer County?
In the last seven days, flights to Custer County varied between €437 and €1,666. Prices depend on the departure time, carrier, cabin class and when the fare is booked.
What is the best time to go to Custer County?
May, June and July are the most popular months to explore Challis, one of Custer County's most famous cities. Summertime here starts June 20. Average temperatures range from 7ºC to 24ºC throughout the season, so travel around then if warmer weather is your preference.
What months are the cheapest to book a flight to Custer County?
The best month to book a terrific deal to Custer County is February, whereas prices are at their highest in December. Keep clear of this month if you're counting your pennies.

Book with confidence

About Custer County

Expedia offers flights to Custer County to meet every traveller's needs. Whatever your flight need - Expedia has the flight for you. So choose from flights to Custer County or destinations around the world and discover how easy it is to make your flight reservations on Expedia.
About Custer County
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