$242 Cheap Flights from Redmond (RDM) to Sun Valley (SUN)

View $242 flight on Fri, May 1, 2026Opens in a new window

Popular airlines from Redmond Municipal Airport (RDM) to Sun Valley, ID (SUN-Friedman Memorial)

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Cheap Flights from Redmond to Sun Valley (RDM-SUN)

Prices were available within the past 7 days and start at $242 for one-way flights and $527 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Wed, Oct 7 - Tue, Oct 13
RDM
Redmond
SUN
Sun Valley
$527 Roundtrip, found 3 days ago
$527
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Wed, Oct 7 from Redmond to Sun Valley, returning Tue, Oct 13, priced at $527 found 3 days ago
Delta
Wed, Oct 7 - Tue, Oct 13
RDM
Redmond
SUN
Sun Valley
$533 Roundtrip, found 3 days ago
$533
Roundtrip
found 3 days ago
Select Delta flight, departing Wed, Oct 7 from Redmond to Sun Valley, returning Tue, Oct 13, priced at $533 found 3 days ago
Delta
Wed, Oct 7 - Tue, Oct 13
RDM
Redmond
SUN
Sun Valley
$563 Roundtrip, found 3 days ago
$563
Roundtrip
found 3 days ago
Select Delta flight, departing Wed, Oct 7 from Redmond to Sun Valley, returning Tue, Oct 13, priced at $563 found 3 days ago
Delta
Wed, Oct 7 - Tue, Oct 13
RDM
Redmond
SUN
Sun Valley
$568 Roundtrip, found 3 days ago
$568
Roundtrip
found 3 days ago
Select Delta flight, departing Wed, Oct 7 from Redmond to Sun Valley, returning Tue, Oct 13, priced at $568 found 3 days ago
Alaska Airlines
Wed, Oct 7 - Tue, Oct 13
RDM
Redmond
SUN
Sun Valley
$569 Roundtrip, found 3 days ago
$569
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Wed, Oct 7 from Redmond to Sun Valley, returning Tue, Oct 13, priced at $569 found 3 days ago
Alaska Airlines
Wed, Oct 7 - Tue, Oct 13
RDM
Redmond
SUN
Sun Valley
$578 Roundtrip, found 3 days ago
$578
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Wed, Oct 7 from Redmond to Sun Valley, returning Tue, Oct 13, priced at $578 found 3 days ago
Alaska Airlines
Wed, Oct 7 - Tue, Oct 13
RDM
Redmond
SUN
Sun Valley
$586 Roundtrip, found 3 days ago
$586
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Wed, Oct 7 from Redmond to Sun Valley, returning Tue, Oct 13, priced at $586 found 3 days ago
Delta
Wed, Oct 7 - Tue, Oct 13
RDM
Redmond
SUN
Sun Valley
$588 Roundtrip, found 3 days ago
$588
Roundtrip
found 3 days ago
Select Delta flight, departing Wed, Oct 7 from Redmond to Sun Valley, returning Tue, Oct 13, priced at $588 found 3 days ago
Alaska Airlines
Wed, Oct 7 - Tue, Oct 13
RDM
Redmond
SUN
Sun Valley
$590 Roundtrip, found 3 days ago
$590
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Wed, Oct 7 from Redmond to Sun Valley, returning Tue, Oct 13, priced at $590 found 3 days ago
United
Wed, Oct 7 - Tue, Oct 13
RDM
Redmond
SUN
Sun Valley
$911 Roundtrip, found 3 days ago
$911
Roundtrip
found 3 days ago
Select United flight, departing Wed, Oct 7 from Redmond to Sun Valley, returning Tue, Oct 13, priced at $911 found 3 days ago

Frequently asked questions

How much does a flight from Redmond, OR (RDM-Robert's Field) to Sun Valley, ID (SUN-Friedman Memorial) cost?
You can find cheap one-way flights from $242 and cheap return flights from $527 Redmond, OR (RDM-Robert's Field) to Sun Valley, ID (SUN-Friedman Memorial) with Expedia. One-way flights typically cost between $373 and $1241, and return flights often range between $542 and $1304. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Redmond, OR (RDM-Robert's Field) to Sun Valley, ID (SUN-Friedman Memorial) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Redmond, OR (RDM-Robert's Field) to Sun Valley, ID (SUN-Friedman Memorial)?
The cheapest month to fly from RDM to SUN is October when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you're able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Redmond, OR (RDM-Robert's Field) to Sun Valley, ID (SUN-Friedman Memorial)?
Enter RDM to SUN and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Redmond, OR (RDM-Robert's Field) to Sun Valley, ID (SUN-Friedman Memorial)?
Delta is one of the cheapest airlines offering connecting flights from Robert's Field (RDM) to Sun Valley (SUN) with return tickets starting from around $362 with a layover in Seattle - Tacoma Intl. (SEA). Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Redmond, OR (RDM-Robert's Field) to Sun Valley, ID (SUN-Friedman Memorial)?
To find a cheap flight from Redmond, OR (RDM-Robert's Field) to Sun Valley, ID (SUN-Friedman Memorial), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Redmond, OR (RDM-Robert's Field) to Sun Valley, ID (SUN-Friedman Memorial)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
What is the earliest flight from Redmond, OR (RDM-Robert's Field) to Sun Valley, ID (SUN-Friedman Memorial)?
The earliest flight from Redmond, OR (RDM-Robert's Field) to Sun Valley, ID (SUN-Friedman Memorial) typically departs at around 5:00 AM, operated by Delta. This is a seasonal service active in January. An early departure like this allows you to make the most of your day in Sun Valley. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Redmond, OR (RDM-Robert's Field) to Sun Valley, ID (SUN-Friedman Memorial)?
The most popular departure times for flights from Redmond, OR (RDM) to Sun Valley, ID (SUN) are from 3am to 6am. About 65% of passengers prefer this time window. Many major carriers, including Delta and Alaska Airlines, offer flights during this window. This timing is popular as it allows travelers to arrive in Sun Valley early in the day, ready to enjoy the beautiful surroundings.
How long does it take to fly from Redmond, OR (RDM-Robert's Field) to Sun Valley, ID (SUN-Friedman Memorial)?
Flying from RDM to SUN with a connection usually takes about 7 hours, traveling roughly 345 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Redmond, OR (RDM-Robert's Field) to Sun Valley, ID (SUN-Friedman Memorial)?
You can fly first class between RDM and SUN. First class cabins are available on:

  • Delta Air Lines
  • United Airlines
  • American Airlines

How do I earn miles on a Redmond, OR (RDM-Robert's Field) to Sun Valley, ID (SUN-Friedman Memorial) flight with Expedia?
It's easy to earn miles on a Redmond, OR (RDM-Robert's Field) to Sun Valley, ID (SUN-Friedman Memorial) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Sun Valley from Robert's Field (RDM)?
If you're planning to travel to Sun Valley from Robert's Field (RDM), you can fly into Friedman Memorial (SUN) Some flights may connect through major hubs like Portland Intl. (PDX), Seattle - Tacoma Intl. (SEA), Los Angeles Intl. (LAX) before reaching Sun Valley. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Redmond, OR (RDM-Robert's Field) to Sun Valley, ID (SUN-Friedman Memorial) at the last minute?
Typically, booking a last minute flight from Redmond, OR (RDM-Robert's Field) to Sun Valley, ID (SUN-Friedman Memorial) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Redmond, OR (RDM-Robert's Field) to Sun Valley, ID (SUN-Friedman Memorial) flight and hotel package?
Securing a Redmond, OR (RDM-Robert's Field) to Sun Valley, ID (SUN-Friedman Memorial) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Redmond, OR (RDM-Robert's Field) to Sun Valley, ID (SUN-Friedman Memorial)?
If you booked your Redmond, OR (RDM-Robert's Field) to Sun Valley, ID (SUN-Friedman Memorial) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Robert's Field
Destination airport
Friedman Memorial
Airlines serving
Alaska Airlines
Roundtrip price
$526
Distance
345 mi

*Flight schedules are subject to change.

*Available to One Key members.

 

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