$316 Cheap Flights from Seattle (SEA) to Riverton (RIW)

View $316 flight on Tue, Aug 19, 2025Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Riverton, WY (RIW-Riverton Regional)

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Cheap Flights from Seattle to Riverton (SEA-RIW)

Prices were available within the past 7 days and start at $316 for one-way flights and $308 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Mon, Aug 25 - Tue, Sep 9
SEA
Seattle
RIW
Riverton
$308 Roundtrip, found 4 days ago
$308
Roundtrip
found 4 days ago
Select United flight, departing Mon, Aug 25 from Seattle to Riverton, returning Tue, Sep 9, priced at $308 found 4 days ago
United
Wed, Aug 20 - Tue, Sep 9
SEA
Seattle
RIW
Riverton
$313 Roundtrip, found 4 days ago
$313
Roundtrip
found 4 days ago
Select United flight, departing Wed, Aug 20 from Seattle to Riverton, returning Tue, Sep 9, priced at $313 found 4 days ago
United
Thu, Aug 14 - Wed, Aug 20
SEA
Seattle
RIW
Riverton
$318 Roundtrip, found 6 days ago
$318
Roundtrip
found 6 days ago
Select United flight, departing Thu, Aug 14 from Seattle to Riverton, returning Wed, Aug 20, priced at $318 found 6 days ago
United
Wed, Aug 13 - Wed, Aug 20
SEA
Seattle
RIW
Riverton
$349 Roundtrip, found 5 days ago
$349
Roundtrip
found 5 days ago
Select United flight, departing Wed, Aug 13 from Seattle to Riverton, returning Wed, Aug 20, priced at $349 found 5 days ago
United
Tue, Sep 16 - Sun, Oct 5
SEA
Seattle
RIW
Riverton
$353 Roundtrip, found 5 days ago
$353
Roundtrip
found 5 days ago
Select United flight, departing Tue, Sep 16 from Seattle to Riverton, returning Sun, Oct 5, priced at $353 found 5 days ago
United
Wed, Aug 20 - Sat, Aug 30
SEA
Seattle
RIW
Riverton
$364 Roundtrip, found 4 days ago
$364
Roundtrip
found 4 days ago
Select United flight, departing Wed, Aug 20 from Seattle to Riverton, returning Sat, Aug 30, priced at $364 found 4 days ago
United
Wed, Sep 17 - Sat, Sep 20
SEA
Seattle
RIW
Riverton
$367 Roundtrip, found 2 days ago
$367
Roundtrip
found 2 days ago
Select United flight, departing Wed, Sep 17 from Seattle to Riverton, returning Sat, Sep 20, priced at $367 found 2 days ago
United
Fri, Aug 8 - Thu, Aug 21
SEA
Seattle
RIW
Riverton
$369 Roundtrip, found 4 days ago
$369
Roundtrip
found 4 days ago
Select United flight, departing Fri, Aug 8 from Seattle to Riverton, returning Thu, Aug 21, priced at $369 found 4 days ago
United
Wed, Aug 13 - Sat, Aug 30
SEA
Seattle
RIW
Riverton
$394 Roundtrip, found 4 days ago
$394
Roundtrip
found 4 days ago
Select United flight, departing Wed, Aug 13 from Seattle to Riverton, returning Sat, Aug 30, priced at $394 found 4 days ago
United
Sun, Sep 28 - Sun, Oct 12
SEA
Seattle
RIW
Riverton
$398 Roundtrip, found 6 days ago
$398
Roundtrip
found 6 days ago
Select United flight, departing Sun, Sep 28 from Seattle to Riverton, returning Sun, Oct 12, priced at $398 found 6 days ago

Alternative airports near Riverton

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Riverton Regional RIW. Cheapest and Closest option available. Average driving time to city center is 8 minutes. Flights from $313
RIW
Riverton Regional
CheapestClosest
Average driving time to city center8 min
Flights from $313
Flights from Seattle (SEA) to Riverton (RIW)
Origin airport
Seattle - Tacoma Intl.
Destination airport
Riverton Regional
Roundtrip price
$308
Distance
736 mi

Seattle to Riverton Flights

The cheapest times to fly from Seattle to Riverton

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 Seattle to Riverton are during the month of August. You can find some of the cheapest flights from Seattle to Riverton with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Seattle to Riverton

Sunday is one of the best days to book for cheap flights from Seattle to Riverton: 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 Seattle to Riverton

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 Seattle to Riverton in 2025. You can also book with separate airlines for your outbound and return journeys, from $316 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 Seattle to Riverton 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 Seattle to Riverton 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.

 

Frequently asked questions

How much does a flight from Seattle - Tacoma Intl. Airport (SEA) to Riverton Regional Airport (RIW) cost?
Get a cheap one-way flight from $316 or cheap return flight from $308 from Seattle - Tacoma Intl. Airport (SEA) to Riverton Regional Airport (RIW) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Seattle - Tacoma Intl. Airport (SEA) to Riverton Regional Airport (RIW)?
The cheapest month to fly from SEA to RIW is August, when demand is low. Off-peak months are usually when you'll find cheap fares for travel between these airports.
What is the cheapest airline that flies from Seattle - Tacoma Intl. Airport (SEA) to Riverton Regional Airport (RIW)?
Expedia's filter tool lets you easily compare different airlines, travel time and fares all in one place. Customize the search to your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest SEA to RIW flight.
How many flights per day from Seattle - Tacoma Intl. Airport (SEA) to Riverton Regional Airport (RIW)?
Nonstop flights from Seattle - Tacoma Intl. Airport (SEA) to Riverton Regional Airport (RIW) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filters. Enter your travel details and pick either "1 Stop" or "2+ Stops."
What day of the week has the most flights from SEA to RIW?
You'll generally find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Seattle - Tacoma Intl. Airport (SEA) to Riverton Regional Airport (RIW)?
Opt for a flight from Seattle - Tacoma Intl. Airport (SEA) to Riverton Regional Airport (RIW) that leaves before 3 PM to reduce the risk of cancellations and delays. Departures after this hour are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Seattle - Tacoma Intl. Airport (SEA) to Riverton Regional Airport (RIW) last-minute?
Last-minute fares from SEA to RIW are typically more expensive. To secure the lowest prices, start looking for flights as early as possible. That being said, if you can play around with your travel dates, you may find a cheap ticket right before you leave.
Is it cheaper to book a SEA to RIW flight and hotel package?
Securing a SEA to RIW flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip in one place. Pick from our impressive range of accommodations and then add activities, car rentals and flights to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Seattle - Tacoma Intl. Airport (SEA) to Riverton Regional Airport (RIW)?
In most instances, you're able to reschedule or cancel your SEA to RIW flight. However, additional charges may apply, especially if you booked over 24 hours ago. Check your itinerary for the airline's policies and fees on flight changes, or if you need more information, visit our Customer Service portal.

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*Available to One Key members.