How do I get Price Alerts for flights from Rock Springs to Seattle?

Confirm your travel details to search for the latest offers for flights from Rock Springs to Seattle . While browsing offers there will be the option to toggle “Price Alerts”. You’ll then receive updates when prices for the flight route increase or decrease.

How can I save money on flights from Rock Springs to Seattle with momondo?

Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore” . Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.

How does momondo find its flight prices?

momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

When did momondo last update prices for flights from Rock Springs Sweetwater County Airport to Seattle/Tacoma Intl Airport?

Prices for flights from Rock Springs Sweetwater County Airport to Seattle/Tacoma Intl Airport were last updated today.

How many operators does momondo search for flights from Rock Springs Sweetwater County Airport to Seattle/Tacoma Intl Airport?

There is 1 operator available for flights from Rock Springs Sweetwater County Airport to Seattle/Tacoma Intl Airport as of October 2026.

How old do you have to be to fly from Rock Springs Sweetwater County Airport to Seattle/Tacoma Intl Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Rock Springs Sweetwater County Airport to Seattle/Tacoma Intl Airport.

What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

The necessary travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$358 Cheap Flights from Rock Springs to Seattle in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Rock Springs to Seattle

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

2:22 pm - 9:15 pmRKS Rock Springs Sweetwater County-SEA Seattle/Tacoma Intl

7h 53m1 stop Denver Intl

5:00 am - 1:42 pmSEA Seattle/Tacoma Intl-RKS Rock Springs Sweetwater County

7h 42m1 stop Denver Intl

$358United Airlines

Thu, Oct 15 - Mon, Oct 19

2:22 pm - 11:26 pmRKS Rock Springs Sweetwater County-SEA Seattle/Tacoma Intl

10h 04m2 stops Denver Intl San Francisco

5:00 am - 1:42 pmSEA Seattle/Tacoma Intl-RKS Rock Springs Sweetwater County

7h 42m1 stop Denver Intl

$364United Airlines

Thu, Oct 15 - Mon, Oct 19

5:00 am - 9:47 amRKS Rock Springs Sweetwater County-SEA Seattle/Tacoma Intl

5h 47m1 stop Denver Intl

3:49 pm - 10:20 pmSEA Seattle/Tacoma Intl-RKS Rock Springs Sweetwater County

5h 31m1 stop Denver Intl

$428United Airlines

Tue, Nov 10 - Sat, Nov 14

5:00 am - 9:47 amRKS Rock Springs Sweetwater County-SEA Seattle/Tacoma Intl

5h 47m1 stop Denver Intl

5:05 am - 1:48 pmSEA Seattle/Tacoma Intl-RKS Rock Springs Sweetwater County

7h 43m1 stop Denver Intl

$428United Airlines

Tue, Nov 10 - Sat, Nov 14

2:25 pm - 9:21 pmRKS Rock Springs Sweetwater County-SEA Seattle/Tacoma Intl

7h 56m1 stop Denver Intl

5:05 am - 1:29 pmSEA Seattle/Tacoma Intl-RKS Rock Springs Sweetwater County

7h 24m1 stop Denver Intl

$428United Airlines

Sat, Dec 12 - Tue, Dec 15

2:25 pm - 9:21 pmRKS Rock Springs Sweetwater County-SEA Seattle/Tacoma Intl

7h 56m1 stop Denver Intl

12:25 pm - 10:20 pmSEA Seattle/Tacoma Intl-RKS Rock Springs Sweetwater County

8h 55m2 stops Los Angeles Denver Intl

$434United Airlines

Sat, Dec 12 - Tue, Dec 15

5:00 am - 2:39 pmRKS Rock Springs Sweetwater County-SEA Seattle/Tacoma Intl

10h 39m2 stops Denver Intl San Francisco

3:49 pm - 10:20 pmSEA Seattle/Tacoma Intl-RKS Rock Springs Sweetwater County

5h 31m1 stop Denver Intl

$434United Airlines

Tue, Nov 10 - Sat, Nov 14

5:00 am - 7:09 pmRKS Rock Springs Sweetwater County-SEA Seattle/Tacoma Intl

15h 09m2 stops Denver Intl Los Angeles

5:05 am - 1:48 pmSEA Seattle/Tacoma Intl-RKS Rock Springs Sweetwater County

7h 43m1 stop Denver Intl

$434United Airlines

Tue, Nov 10 - Sat, Nov 14

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United Airlines flights from Rock Springs to Seattle

Our best United Airlines deals on Rock Springs to Seattle flight tickets

United Airlines

Oct 15

RKS2:22 pmRock Springs Sweetwater County

7h 53m

1 stop

SEA9:15 pmSeattle/Tacoma Intl

Oct 19

SEA5:00 amSeattle/Tacoma Intl

7h 42m

1 stop

RKS1:42 pmRock Springs Sweetwater County

$358

United Airlines

Oct 15

RKS2:22 pmRock Springs Sweetwater County

10h 04m

2 stops

SEA11:26 pmSeattle/Tacoma Intl

Oct 19

SEA5:00 amSeattle/Tacoma Intl

7h 42m

1 stop

RKS1:42 pmRock Springs Sweetwater County

$364

United Airlines

Nov 10

RKS5:00 amRock Springs Sweetwater County

5h 47m

1 stop

SEA9:47 amSeattle/Tacoma Intl

Nov 14

SEA5:05 amSeattle/Tacoma Intl

7h 43m

1 stop

RKS1:48 pmRock Springs Sweetwater County

$428

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Rock SpringsSeattle

RKS Rock Springs Sweetwater County - SEA Seattle/Tacoma Intl

RKSSEA

Rock Springs Sweetwater County

Thu 10/15

2:22 pm-9:15 pm

1 stop7h 53m

Seattle/Tacoma Intl

Mon 10/19

5:00 am-1:42 pm

1 stop7h 42m

$358

Rock SpringsSeattle

RKS Rock Springs Sweetwater County - SEA Seattle/Tacoma Intl

RKSSEA

Rock Springs Sweetwater County

Thu 10/15

2:22 pm-11:26 pm

2 stops10h 04m

Seattle/Tacoma Intl

Mon 10/19

5:00 am-1:42 pm

1 stop7h 42m

$364

Quickest round-trip

Rock SpringsSeattle

RKS Rock Springs Sweetwater County - SEA Seattle/Tacoma Intl

RKSSEA

Rock Springs Sweetwater County

Tue 11/10

5:00 am-9:47 am

1 stop5h 47m

Seattle/Tacoma Intl

Sat 11/14

3:49 pm-10:20 pm

1 stop5h 31m

$428

Rock SpringsSeattle

RKS Rock Springs Sweetwater County - SEA Seattle/Tacoma Intl

RKSSEA

Rock Springs Sweetwater County

Tue 11/10

5:00 am-9:47 am

1 stop5h 47m

Seattle/Tacoma Intl

Sat 11/14

5:05 am-1:48 pm

1 stop7h 43m

$428

Rock SpringsSeattle

RKS Rock Springs Sweetwater County - SEA Seattle/Tacoma Intl

RKSSEA

Rock Springs Sweetwater County

Sat 12/12

2:25 pm-9:21 pm

1 stop7h 56m

Seattle/Tacoma Intl

Tue 12/15

5:05 am-1:29 pm

1 stop7h 24m

$428

Rock SpringsSeattle

RKS Rock Springs Sweetwater County - SEA Seattle/Tacoma Intl

RKSSEA

Rock Springs Sweetwater County

Sat 12/12

2:25 pm-9:21 pm

1 stop7h 56m

Seattle/Tacoma Intl

Tue 12/15

12:25 pm-10:20 pm

2 stops8h 55m

$434

Rock SpringsSeattle

RKS Rock Springs Sweetwater County - SEA Seattle/Tacoma Intl

RKSSEA

Rock Springs Sweetwater County

Tue 11/10

5:00 am-2:39 pm

2 stops10h 39m

Seattle/Tacoma Intl

Sat 11/14

3:49 pm-10:20 pm

1 stop5h 31m

$434

Rock SpringsSeattle

RKS Rock Springs Sweetwater County - SEA Seattle/Tacoma Intl

RKSSEA

Rock Springs Sweetwater County

Tue 11/10

5:00 am-7:09 pm

2 stops15h 09m

Seattle/Tacoma Intl

Sat 11/14

5:05 am-1:48 pm

1 stop7h 43m

$434

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

When to book flights from Rock Springs to Seattle

Are you open to changing your travel dates? Check out the ideal times to fly from Rock Springs to Seattle according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Rock Springs to Seattle (RKS to SEA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Rock Springs to Seattle

Best Price Found	$358
Fastest flight time	5h 47m
Direct flights	None

The best flight deal from Rock Springs to Seattle found on momondo in the last 72 hours is $358

The fastest flight from Rock Springs to Seattle takes 5h 47m

There are no direct flights from Rock Springs to Seattle. There are no popular flight routes from Rock Springs to Seattle.

Search flight deals

Frequently asked questions about flying from Rock Springs to Seattle

How far is Rock Springs Sweetwater County to Seattle/Tacoma Intl by plane?
Seattle/Tacoma Intl is 766.7 mi away from Rock Springs Sweetwater County. In terms of flight time, this usually takes a little over 5h 47m.
When did momondo last update prices for flights from Rock Springs Sweetwater County Airport to Seattle/Tacoma Intl Airport?
Prices for flights from Rock Springs Sweetwater County Airport to Seattle/Tacoma Intl Airport were last updated today.
How many operators does momondo search for flights from Rock Springs Sweetwater County Airport to Seattle/Tacoma Intl Airport?
There is 1 operator available for flights from Rock Springs Sweetwater County Airport to Seattle/Tacoma Intl Airport as of October 2026.
How old do you have to be to fly from Rock Springs Sweetwater County Airport to Seattle/Tacoma Intl Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Rock Springs Sweetwater County Airport to Seattle/Tacoma Intl Airport.
What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?
The necessary travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Rock Springs to Seattle?
Based on momondo bookings for flights between Rock Springs and Seattle, the leading airline is United Airlines, making up 100% of the total bookings.

Best airlines flying from Rock Springs to Seattle

Compare and see reviews for airlines that fly from Rock Springs to Seattle with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $238	Free Cancellation	Rating 7.4 10,275 reviews		Search United Airlines flights

Frequently asked questions about flying from Rock Springs to Seattle

How do I get Price Alerts for flights from Rock Springs to Seattle?
Confirm your travel details to search for the latest offers for flights from Rock Springs to Seattle. While browsing offers there will be the option to toggle “Price Alerts”. You’ll then receive updates when prices for the flight route increase or decrease.
How can I save money on flights from Rock Springs to Seattle with momondo?
Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore”. Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.
How does momondo find its flight prices?
momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

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Why use momondo?

Why should I use momondo to find a flight deal from Rock Springs to Seattle?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Seattle from Rock Springs.

Can I find flights from Rock Springs to Seattle with flexible booking policies on momondo?

Flights from Rock Springs to Seattle with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Rock Springs to Seattle?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Rock Springs to Seattle.

I’m not ready to book a flight from Rock Springs to Seattle right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Rock Springs to Seattle flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.