Cheap flights to Custer County

View €131 flight on Sat, 7 Feb 2026Opens in a new window

Popular airlines to Custer County

  • United

    United

  • Delta

    Delta

  • Alaska Airlines

    Alaska Airlines

  • American Airlines

    American Airlines

  • Hawaiian Airlines

    Hawaiian Airlines

  • KLM

    KLM

  • Virgin Atlantic

    Virgin Atlantic

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Cheap round-trip flights to Custer County

Prices were available within the past 7 days and start at €131 for one-way flights and €262 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, 17 Jan - Fri, 23 Jan
LGA
New York
SUN
Sun Valley
€262 Return, found 1 day ago
€262
Return
found 1 day ago
Select Delta flight, departing Sat, 17 Jan from New York to Sun Valley, returning Fri, 23 Jan, priced at €262 found 1 day ago
American Airlines
Sat, 17 Jan - Fri, 23 Jan
JFK
New York
SUN
Sun Valley
€263 Return, found 1 day ago
€263
Return
found 1 day ago
Select American Airlines flight, departing Sat, 17 Jan from New York to Sun Valley, returning Fri, 23 Jan, priced at €263 found 1 day ago
American Airlines
Sat, 17 Jan - Fri, 23 Jan
EWR
New York
SUN
Sun Valley
€263 Return, found 1 day ago
€263
Return
found 1 day ago
Select American Airlines flight, departing Sat, 17 Jan from New York to Sun Valley, returning Fri, 23 Jan, priced at €263 found 1 day ago
Delta
Sat, 17 Jan - Fri, 23 Jan
EWR
New York
SUN
Sun Valley
€263 Return, found 1 day ago
€263
Return
found 1 day ago
Select Delta flight, departing Sat, 17 Jan from New York to Sun Valley, returning Fri, 23 Jan, priced at €263 found 1 day ago
Delta
Sat, 17 Jan - Fri, 23 Jan
JFK
New York
SUN
Sun Valley
€278 Return, found 1 day ago
€278
Return
found 1 day ago
Select Delta flight, departing Sat, 17 Jan from New York to Sun Valley, returning Fri, 23 Jan, priced at €278 found 1 day ago
American Airlines
Sat, 17 Jan - Fri, 23 Jan
EWR
New York
SUN
Sun Valley
€290 Return, found 1 day ago
€290
Return
found 1 day ago
Select American Airlines flight, departing Sat, 17 Jan from New York to Sun Valley, returning Fri, 23 Jan, priced at €290 found 1 day ago
Delta
Sat, 17 Jan - Fri, 23 Jan
JFK
New York
SUN
Sun Valley
€296 Return, found 1 day ago
€296
Return
found 1 day ago
Select Delta flight, departing Sat, 17 Jan from New York to Sun Valley, returning Fri, 23 Jan, priced at €296 found 1 day ago
United
Sat, 17 Jan - Fri, 23 Jan
LGA
New York
SUN
Sun Valley
€319 Return, found 1 day ago
€319
Return
found 1 day ago
Select United flight, departing Sat, 17 Jan from New York to Sun Valley, returning Fri, 23 Jan, priced at €319 found 1 day ago
Lufthansa
Thu, 8 Jan - Thu, 15 Jan
DUB
Dublin
SUN
Sun Valley
€853 Return, found 1 day ago
€853
Return
found 1 day ago
Select Lufthansa flight, departing Thu, 8 Jan from Dublin to Sun Valley, returning Thu, 15 Jan, priced at €853 found 1 day ago
KLM
Thu, 8 Jan - Thu, 15 Jan
DUB
Dublin
SUN
Sun Valley
€976 Return, found 1 day ago
€976
Return
found 1 day ago
Select KLM flight, departing Thu, 8 Jan from Dublin to Sun Valley, returning Thu, 15 Jan, priced at €976 found 1 day ago

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.

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, €262 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 New York (LGA) sold for as low as €131 in the last seven days. During this period, the price of a return journey to Custer County ranged between €262 and €1,216. 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 €262 and €1,216. 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.

Trending flights to Custer County

These prices were available within the past 7 days. Prices quoted are per person, return, for the period specified. Prices and availability are subject to change. Additional terms apply.

Lufthansa
Thu, 8 Jan - Thu, 15 Jan
DUB
Dublin
SUN
Sun Valley
€853 Return, found 1 day ago
€853
Return
found 1 day ago
Select Lufthansa flight, departing Thu, 8 Jan from Dublin to Sun Valley, returning Thu, 15 Jan, priced at €853 found 1 day ago
*Available to Expedia members.