Cheap flights to Custer County

View €163 flight on Sat, 6 Jun 2026Opens in a new window

Popular airlines to Custer County

  • Alaska Airlines

  • United

  • Delta

  • KLM

  • American Airlines

  • Air France

  • Virgin Atlantic

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 15% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap round-trip flights to Custer County

Prices were available within the past 7 days and start at €163 for one-way flights and €372 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, 6 Jun - Fri, 12 Jun
EWR
New York
SUN
Sun Valley
€372 Return, found 16 hours ago
€372
Return
found 16 hours ago
Select Delta flight, departing Sat, 6 Jun from New York to Sun Valley, returning Fri, 12 Jun, priced at €372 found 16 hours ago
Delta
Sat, 6 Jun - Fri, 12 Jun
EWR
New York
SUN
Sun Valley
€377 Return, found 16 hours ago
€377
Return
found 16 hours ago
Select Delta flight, departing Sat, 6 Jun from New York to Sun Valley, returning Fri, 12 Jun, priced at €377 found 16 hours ago
United
Sat, 6 Jun - Fri, 12 Jun
LGA
New York
SUN
Sun Valley
€379 Return, found 16 hours ago
€379
Return
found 16 hours ago
Select United flight, departing Sat, 6 Jun from New York to Sun Valley, returning Fri, 12 Jun, priced at €379 found 16 hours ago
Delta
Sat, 6 Jun - Fri, 12 Jun
EWR
New York
SUN
Sun Valley
€393 Return, found 16 hours ago
€393
Return
found 16 hours ago
Select Delta flight, departing Sat, 6 Jun from New York to Sun Valley, returning Fri, 12 Jun, priced at €393 found 16 hours ago
Delta
Sat, 6 Jun - Fri, 12 Jun
EWR
New York
SUN
Sun Valley
€397 Return, found 16 hours ago
€397
Return
found 16 hours ago
Select Delta flight, departing Sat, 6 Jun from New York to Sun Valley, returning Fri, 12 Jun, priced at €397 found 16 hours ago
United
Sat, 6 Jun - Fri, 12 Jun
EWR
New York
SUN
Sun Valley
€420 Return, found 16 hours ago
€420
Return
found 16 hours ago
Select United flight, departing Sat, 6 Jun from New York to Sun Valley, returning Fri, 12 Jun, priced at €420 found 16 hours ago
United
Sat, 6 Jun - Fri, 12 Jun
LGA
New York
SUN
Sun Valley
€421 Return, found 16 hours ago
€421
Return
found 16 hours ago
Select United flight, departing Sat, 6 Jun from New York to Sun Valley, returning Fri, 12 Jun, priced at €421 found 16 hours ago
United
Sat, 6 Jun - Fri, 12 Jun
LGA
New York
SUN
Sun Valley
€429 Return, found 16 hours ago
€429
Return
found 16 hours ago
Select United flight, departing Sat, 6 Jun from New York to Sun Valley, returning Fri, 12 Jun, priced at €429 found 16 hours ago
United
Sat, 6 Jun - Fri, 12 Jun
EWR
New York
SUN
Sun Valley
€440 Return, found 16 hours ago
€440
Return
found 16 hours ago
Select United flight, departing Sat, 6 Jun from New York to Sun Valley, returning Fri, 12 Jun, priced at €440 found 16 hours ago
United
Sat, 6 Jun - Fri, 12 Jun
EWR
New York
SUN
Sun Valley
€445 Return, found 16 hours ago
€445
Return
found 16 hours ago
Select United flight, departing Sat, 6 Jun from New York to Sun Valley, returning Fri, 12 Jun, priced at €445 found 16 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, €372 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 (EWR) sold for as low as €163 in the last seven days. During this period, the price of a return journey to Custer County ranged between €372 and €445. 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 €372 and €445. 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
*Available to Expedia members.