Asphalt road of a residential street in Redmond, Seattle suburbs, with blooming cherry trees; Shutterstock ID 389648203

$368 Cheap Flights from Tri-Cities (TRI) to Redmond (RDM)

View $368 flight on Tue, Sep 22, 2026Opens in a new window

Popular airlines from Tri-Cities, TN (TRI-Tri-Cities Regional) to Redmond Municipal Airport (RDM)

Cheap Flights from Tri-Cities to Redmond (TRI-RDM)

Prices were available within the past 7 days and start at $368 for one-way flights and $367 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, Oct 17 - Tue, Oct 20
TRI
Tri-Cities
RDM
Redmond
$367 Roundtrip, found 4 days ago
$367
Roundtrip
found 4 days ago
Select Delta flight, departing Sat, Oct 17 from Tri-Cities to Redmond, returning Tue, Oct 20, priced at $367 found 4 days ago
Delta
Tue, Oct 20 - Mon, Oct 26
TRI
Tri-Cities
RDM
Redmond
$379 Roundtrip, found 4 days ago
$379
Roundtrip
found 4 days ago
Select Delta flight, departing Tue, Oct 20 from Tri-Cities to Redmond, returning Mon, Oct 26, priced at $379 found 4 days ago
Delta
Fri, Oct 23 - Mon, Oct 26
TRI
Tri-Cities
RDM
Redmond
$389 Roundtrip, found 4 days ago
$389
Roundtrip
found 4 days ago
Select Delta flight, departing Fri, Oct 23 from Tri-Cities to Redmond, returning Mon, Oct 26, priced at $389 found 4 days ago
Delta
Tue, Oct 20 - Sun, Oct 25
TRI
Tri-Cities
RDM
Redmond
$408 Roundtrip, found 4 days ago
$408
Roundtrip
found 4 days ago
Select Delta flight, departing Tue, Oct 20 from Tri-Cities to Redmond, returning Sun, Oct 25, priced at $408 found 4 days ago
Delta
Fri, Oct 23 - Sun, Oct 25
TRI
Tri-Cities
RDM
Redmond
$419 Roundtrip, found 4 days ago
$419
Roundtrip
found 4 days ago
Select Delta flight, departing Fri, Oct 23 from Tri-Cities to Redmond, returning Sun, Oct 25, priced at $419 found 4 days ago
Delta
Tue, Oct 20 - Sat, Oct 24
TRI
Tri-Cities
RDM
Redmond
$438 Roundtrip, found 4 days ago
$438
Roundtrip
found 4 days ago
Select Delta flight, departing Tue, Oct 20 from Tri-Cities to Redmond, returning Sat, Oct 24, priced at $438 found 4 days ago
American Airlines
Sat, Jan 16 - Sat, Jan 23
TRI
Tri-Cities
RDM
Redmond
$447 Roundtrip, found 15 hours ago
$447
Roundtrip
found 15 hours ago
Select American Airlines flight, departing Sat, Jan 16 from Tri-Cities to Redmond, returning Sat, Jan 23, priced at $447 found 15 hours ago
Delta
Sun, Oct 18 - Mon, Oct 26
TRI
Tri-Cities
RDM
Redmond
$449 Roundtrip, found 4 days ago
$449
Roundtrip
found 4 days ago
Select Delta flight, departing Sun, Oct 18 from Tri-Cities to Redmond, returning Mon, Oct 26, priced at $449 found 4 days ago
American Airlines
Sat, Jan 16 - Sat, Jan 23
TRI
Tri-Cities
RDM
Redmond
$467 Roundtrip, found 15 hours ago
$467
Roundtrip
found 15 hours ago
Select American Airlines flight, departing Sat, Jan 16 from Tri-Cities to Redmond, returning Sat, Jan 23, priced at $467 found 15 hours ago
United
Sat, Jan 16 - Sat, Jan 23
TRI
Tri-Cities
RDM
Redmond
$747 Roundtrip, found 15 hours ago
$747
Roundtrip
found 15 hours ago
Select United flight, departing Sat, Jan 16 from Tri-Cities to Redmond, returning Sat, Jan 23, priced at $747 found 15 hours ago

Frequently asked questions

How much does a flight from Tri-Cities, TN (TRI-Tri-Cities Regional) to Redmond, OR (RDM-Robert's Field) cost?
You can find cheap one-way flights from $368 and cheap return flights from $367 Tri-Cities, TN (TRI-Tri-Cities Regional) to Redmond, OR (RDM-Robert's Field) with Expedia. One-way flights typically cost between $473 and $1384. 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 Tri-Cities, TN (TRI-Tri-Cities Regional) to Redmond, OR (RDM-Robert's Field) 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 Tri-Cities, TN (TRI-Tri-Cities Regional) to Redmond, OR (RDM-Robert's Field)?
The cheapest month to fly from TRI to RDM 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 Tri-Cities, TN (TRI-Tri-Cities Regional) to Redmond, OR (RDM-Robert's Field)?
Enter TRI to RDM and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Tri-Cities, TN (TRI-Tri-Cities Regional) to Redmond, OR (RDM-Robert's Field)?
Delta and American Airlines are just some of the carriers that fly from Tri-Cities, TN (TRI) to Redmond, OR (RDM). Use Expedia's flight search tool to compare airlines on this route and find our cheapest option for your trip. 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 Tri-Cities, TN (TRI-Tri-Cities Regional) to Redmond, OR (RDM-Robert's Field)?
To find a cheap flight from Tri-Cities, TN (TRI-Tri-Cities Regional) to Redmond, OR (RDM-Robert's Field), 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 Tri-Cities, TN (TRI-Tri-Cities Regional) to Redmond, OR (RDM-Robert's Field)?
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 Tri-Cities, TN (TRI-Tri-Cities Regional) to Redmond, OR (RDM-Robert's Field)?
The earliest flight from Tri-Cities (TRI) to Redmond (RDM) usually departs at around 5:00 AM local time, operated by American Airlines. This service is seasonal and active in November. An early departure can give you a head start on your day in Redmond. 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 Tri-Cities, TN (TRI-Tri-Cities Regional) to Redmond, OR (RDM-Robert's Field)?
The most popular departure times for flights from Tri-Cities, TN (TRI) to Redmond, OR (RDM) are in the late afternoon, from 3pm to 6pm. About 27% of passengers prefer this time window. Many major carriers, including Delta Airlines, American Airlines and Delta offer flights during this window. This timing is popular because it allows you to travel after a day of activities.
How long does it take to fly from Tri-Cities, TN (TRI-Tri-Cities Regional) to Redmond, OR (RDM-Robert's Field)?
Flights from TRI to RDM with one stop typically take around 15 hours 30 minutes, covering approximately 2,089 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 Tri-Cities, TN (TRI-Tri-Cities Regional) to Redmond, OR (RDM-Robert's Field)?
First class seats are offered on the TRI to RDM route with Delta Air Lines and American Airlines.
How do I earn miles on a Tri-Cities, TN (TRI-Tri-Cities Regional) to Redmond, OR (RDM-Robert's Field) flight with Expedia?
It's easy to earn miles on a Tri-Cities, TN (TRI-Tri-Cities Regional) to Redmond, OR (RDM-Robert's Field) 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 Redmond from Tri-Cities Regional (TRI)?
From Tri-Cities Regional (TRI), you can fly into Robert's Field (RDM) to reach Redmond. Some flights may connect through major hubs like Hartsfield-Jackson Atlanta Intl. (ATL), Charlotte-Douglas Intl. (CLT), Dallas-Fort Worth Intl. (DFW) before reaching Redmond. 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 Tri-Cities, TN (TRI-Tri-Cities Regional) to Redmond, OR (RDM-Robert's Field) at the last minute?
Typically, booking a last minute flight from Tri-Cities, TN (TRI-Tri-Cities Regional) to Redmond, OR (RDM-Robert's Field) 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 Tri-Cities, TN (TRI-Tri-Cities Regional) to Redmond, OR (RDM-Robert's Field) flight and hotel package?
Securing a Tri-Cities, TN (TRI-Tri-Cities Regional) to Redmond, OR (RDM-Robert's Field) 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 Tri-Cities, TN (TRI-Tri-Cities Regional) to Redmond, OR (RDM-Robert's Field)?
If you booked your Tri-Cities, TN (TRI-Tri-Cities Regional) to Redmond, OR (RDM-Robert's Field) 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
Tri-Cities Regional
Destination airport
Robert's Field
Airlines serving
American Airlines, Delta, United
Roundtrip price
$367
Distance
2088 mi

Book with confidence

Tri-Cities to Redmond Flights

The cheapest times to fly from Tri-Cities to Redmond

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Tri-Cities to Redmond are during the month of October. You can find some of the cheapest flights from Tri-Cities to Redmond with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Tri-Cities to Redmond

Sunday is one of the best days to book for cheap flights from Tri-Cities to Redmond: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Tri-Cities to Redmond

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Tri-Cities to Redmond in 2026. You can also book with separate airlines for your outbound and return journeys, from $368 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Tri-Cities to Redmond flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Tri-Cities to Redmond airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Tri-Cities to Redmond Flights

*Flight schedules are subject to change.

*Available to One Key members.