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Cheap Flights to Custer County from $136

View $136 flight on Tue, Jan 5, 2027Opens in a new window

Popular airlines to Custer County

  • Alaska Airlines

  • United

  • Delta

  • KLM

  • American Airlines

  • Air France

  • Virgin Atlantic

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How much is the cheapest flight to Custer County?

Prices were available within the past 7 days and start at $136 for one-way flights and $237 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Sat, Sep 12 - Sat, Sep 19
SEA
Seattle
SUN
Sun Valley
$237 Roundtrip, found 10 hours ago
$237
Roundtrip
found 10 hours ago
Select Alaska Airlines flight, departing Sat, Sep 12 from Seattle to Sun Valley, returning Sat, Sep 19, priced at $237 found 10 hours ago
Alaska Airlines
Sat, Aug 22 - Mon, Aug 24
SEA
Seattle
SUN
Sun Valley
$255 Roundtrip, found 1 hour ago
$255
Roundtrip
found 1 hour ago
Select Alaska Airlines flight, departing Sat, Aug 22 from Seattle to Sun Valley, returning Mon, Aug 24, priced at $255 found 1 hour ago
Delta
Sat, Sep 12 - Sat, Sep 19
SEA
Seattle
SUN
Sun Valley
$257 Roundtrip, found 1 day ago
$257
Roundtrip
found 1 day ago
Select Delta flight, departing Sat, Sep 12 from Seattle to Sun Valley, returning Sat, Sep 19, priced at $257 found 1 day ago
Alaska Airlines
Thu, Sep 17 - Mon, Sep 21
SEA
Seattle
SUN
Sun Valley
$257 Roundtrip, found 23 hours ago
$257
Roundtrip
found 23 hours ago
Select Alaska Airlines flight, departing Thu, Sep 17 from Seattle to Sun Valley, returning Mon, Sep 21, priced at $257 found 23 hours ago
Alaska Airlines
Thu, Sep 24 - Sun, Sep 27
SEA
Seattle
SUN
Sun Valley
$265 Roundtrip, just found
$265
Roundtrip
just found
Select Alaska Airlines flight, departing Thu, Sep 24 from Seattle to Sun Valley, returning Sun, Sep 27, priced at $265 just found
Alaska Airlines
Fri, Sep 18 - Sun, Sep 20
SEA
Seattle
SUN
Sun Valley
$277 Roundtrip, found 2 days ago
$277
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Fri, Sep 18 from Seattle to Sun Valley, returning Sun, Sep 20, priced at $277 found 2 days ago
American Airlines
Tue, Jan 5 - Thu, Jan 7
PHX
Phoenix
SUN
Sun Valley
$281 Roundtrip, found 5 hours ago
$281
Roundtrip
found 5 hours ago
Select American Airlines flight, departing Tue, Jan 5 from Phoenix to Sun Valley, returning Thu, Jan 7, priced at $281 found 5 hours ago
Delta
Sat, Sep 12 - Sat, Sep 19
SEA
Seattle
SUN
Sun Valley
$287 Roundtrip, found 1 day ago
$287
Roundtrip
found 1 day ago
Select Delta flight, departing Sat, Sep 12 from Seattle to Sun Valley, returning Sat, Sep 19, priced at $287 found 1 day ago
Delta
Sun, Jan 10 - Tue, Jan 12
PHX
Phoenix
SUN
Sun Valley
$288 Roundtrip, found 1 hour ago
$288
Roundtrip
found 1 hour ago
Select Delta flight, departing Sun, Jan 10 from Phoenix to Sun Valley, returning Tue, Jan 12, priced at $288 found 1 hour ago
United
Sun, Jan 10 - Tue, Jan 12
PHX
Phoenix
SUN
Sun Valley
$291 Roundtrip, found 1 hour ago
$291
Roundtrip
found 1 hour ago
Select United flight, departing Sun, Jan 10 from Phoenix to Sun Valley, returning Tue, Jan 12, priced at $291 found 1 hour ago

Trending flights to Custer County

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

Bargain Flight
Sat, Aug 29 - Sat, Sep 5
SEA
Seattle
SUN
Sun Valley
$237 Roundtrip, found 1 day ago
$237
Roundtrip
found 1 day ago
Select Bargain Flight flight, departing Sat, Aug 29 from Seattle to Sun Valley, returning Sat, Sep 5, priced at $237 found 1 day 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, $237 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 Phoenix (PHX) sold for as low as $136 in the last seven days. During this period, the price of a return journey to Custer County ranged between $237 and $291. 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.
When is the cheapest time to fly to Custer County?
Fly out on a Tuesday to increase your chances of getting the cheapest deal to Custer County. Mondays are usually the second most affordable day to take off. Saturday is normally the priciest day to fly anywhere.
How much is a plane ticket to Custer County?
In the last seven days, flights to Custer County varied between $237 and $291. Prices depend on the departure time, carrier, cabin class and when the fare is booked.
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.
How long is a flight to Custer County?
It could be an hour or two or more — it really depends on which part of the U.S. You're coming from. The average flight times for these top domestic routes to Custer County will give you a good idea of what to expect:

  • Seattle, WA (SEA-Seattle - Tacoma Intl.) to Boise Airport (BOI) - 1 hour and 26 minutes
  • Denver, CO (DEN-Denver Intl.) to Boise Airport (BOI) - 1 hour and 57 minutes
  • San Francisco, CA (SFO-San Francisco Intl.) to Boise Airport (BOI) - 1 hour and 40 minutes

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 45ºF to 75ºF throughout the season, so travel around then if warmer weather is your preference.

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Travel information

*Flight schedules are subject to change.

*Available to One Key members.

 

*Flight schedules are subject to change.

*Available to One Key members.