When did momondo last update prices for flights from Rock Springs Sweetwater County Airport to Washington?

Prices for flights from Rock Springs Sweetwater County Airport to Washington are updated daily.

How many operators does momondo search for flights from Rock Springs Sweetwater County Airport to Washington?

The number of operators available for flights from Rock Springs Sweetwater County Airport to Washington is 1 as of August 2026.

How old do you have to be to fly from Rock Springs Sweetwater County Airport to Washington?

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 Washington.

What documentation or ID do you need to fly to Washington?

The required travel and health documents for your Washington trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Washington. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$268 Cheap Flights from Rock Springs to Washington in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Rock Springs to Washington

Round-trip

One-way

Last minute

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 - 1:47 pmSEA Seattle/Tacoma Intl-RKS Rock Springs Sweetwater County

7h 47m1 stop Denver Intl

$308United Airlines

Fri, Sep 18 - Mon, Sep 21

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

10h 04m2 stops Denver Intl San Francisco

5:00 am - 1:47 pmSEA Seattle/Tacoma Intl-RKS Rock Springs Sweetwater County

7h 47m1 stop Denver Intl

$314United Airlines

Fri, Sep 18 - Mon, Sep 21

5:05 am - 11:44 amRKS Rock Springs Sweetwater County-SEA Seattle/Tacoma Intl

7h 39m1 stop Denver Intl

1:16 pm - 10:21 pmSEA Seattle/Tacoma Intl-RKS Rock Springs Sweetwater County

8h 05m2 stops San Francisco Denver Intl

$329United Airlines

Tue, Aug 18 - Tue, Aug 25

5:05 am - 4:14 pmRKS Rock Springs Sweetwater County-SEA Seattle/Tacoma Intl

12h 09m2 stops Denver Intl San Francisco

1:16 pm - 10:21 pmSEA Seattle/Tacoma Intl-RKS Rock Springs Sweetwater County

8h 05m2 stops San Francisco Denver Intl

$334United Airlines

Tue, Aug 18 - Tue, Aug 25

5:05 am - 10:01 amRKS Rock Springs Sweetwater County-SEA Seattle/Tacoma Intl

5h 56m1 stop Denver Intl

2:34 pm - 10:21 pmSEA Seattle/Tacoma Intl-RKS Rock Springs Sweetwater County

6h 47m1 stop Denver Intl

$388United Airlines

Sat, Sep 19 - Wed, Sep 23

5:05 am - 2:24 pmRKS Rock Springs Sweetwater County-SEA Seattle/Tacoma Intl

10h 19m2 stops Denver Intl San Francisco

12:44 pm - 10:21 pmSEA Seattle/Tacoma Intl-RKS Rock Springs Sweetwater County

8h 37m1 stop Denver Intl

$394United Airlines

Sat, Sep 19 - Wed, Sep 23

5:05 am - 11:44 amRKS Rock Springs Sweetwater County-SEA Seattle/Tacoma Intl

7h 39m1 stop Denver Intl

5:00 am - 1:47 pmSEA Seattle/Tacoma Intl-RKS Rock Springs Sweetwater County

7h 47m1 stop Denver Intl

$396United Airlines

Wed, Aug 19 - Sun, Aug 23

5:05 am - 7:14 pmRKS Rock Springs Sweetwater County-SEA Seattle/Tacoma Intl

15h 09m2 stops Denver Intl Los Angeles Los Angeles

9:00 am - 10:21 pmSEA Seattle/Tacoma Intl-RKS Rock Springs Sweetwater County

12h 21m2 stops San Francisco Denver Intl

$399United Airlines

Sat, Sep 19 - Wed, Sep 23

5:05 am - 4:14 pmRKS Rock Springs Sweetwater County-SEA Seattle/Tacoma Intl

12h 09m2 stops Denver Intl San Francisco

5:00 am - 1:47 pmSEA Seattle/Tacoma Intl-RKS Rock Springs Sweetwater County

7h 47m1 stop Denver Intl

$401United Airlines

Wed, Aug 19 - Sun, Aug 23

5:05 am - 10:01 amRKS Rock Springs Sweetwater County-SEA Seattle/Tacoma Intl

5h 56m1 stop Denver Intl

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

7h 42m1 stop Denver Intl

$410United Airlines

Fri, Oct 2 - Sun, Oct 18

Cheap last minute flights

Enter your travel dates to find the best prices.

2:16 pm - 9:10 pmRKS Rock Springs Sweetwater County-SEA Seattle/Tacoma Intl

7h 54m1 stop Denver Intl

5:00 am - 1:47 pmSEA Seattle/Tacoma Intl-RKS Rock Springs Sweetwater County

7h 47m1 stop Denver Intl

$493United Airlines

Thu, Aug 6 - Wed, Aug 12

2:16 pm - 9:10 pmRKS Rock Springs Sweetwater County-SEA Seattle/Tacoma Intl

7h 54m1 stop Denver Intl

5:00 am - 1:31 pmSEA Seattle/Tacoma Intl-RKS Rock Springs Sweetwater County

7h 31m1 stop Denver Intl

$493United Airlines

Fri, Aug 7 - Mon, Aug 10

5:05 am - 1:21 pmRKS Rock Springs Sweetwater County-SEA Seattle/Tacoma Intl

9h 16m1 stop Denver Intl

3:54 pm - 10:21 pmSEA Seattle/Tacoma Intl-RKS Rock Springs Sweetwater County

5h 27m1 stop Denver Intl

$493United Airlines

Fri, Aug 7 - Wed, Aug 12

5:05 am - 2:36 pmRKS Rock Springs Sweetwater County-SEA Seattle/Tacoma Intl

10h 31m2 stops Denver Intl Los Angeles Los Angeles

5:00 am - 1:47 pmSEA Seattle/Tacoma Intl-RKS Rock Springs Sweetwater County

7h 47m1 stop Denver Intl

$499United Airlines

Thu, Aug 6 - Wed, Aug 12

5:05 am - 1:21 pmRKS Rock Springs Sweetwater County-SEA Seattle/Tacoma Intl

9h 16m1 stop Denver Intl

6:00 am - 10:23 pmSEA Seattle/Tacoma Intl-RKS Rock Springs Sweetwater County

15h 23m2 stops Los Angeles Los Angeles Denver Intl

$499United Airlines

Thu, Aug 6 - Mon, Aug 10

2:16 pm - 1:29 amRKS Rock Springs Sweetwater County-SEA Seattle/Tacoma Intl

12h 13m2 stops Denver Intl San Francisco

3:54 pm - 10:21 pmSEA Seattle/Tacoma Intl-RKS Rock Springs Sweetwater County

5h 27m1 stop Denver Intl

$499United Airlines

Fri, Aug 7 - Wed, Aug 12

5:05 am - 7:38 pmRKS Rock Springs Sweetwater County-SEA Seattle/Tacoma Intl

15h 33m2 stops Denver Intl Los Angeles Los Angeles

5:00 am - 1:31 pmSEA Seattle/Tacoma Intl-RKS Rock Springs Sweetwater County

7h 31m1 stop Denver Intl

$499United Airlines

Sat, Aug 8 - Mon, Aug 10

5:05 am - 6:47 pmRKS Rock Springs Sweetwater County-SEA Seattle/Tacoma Intl

14h 42m2 stops Denver Intl San Francisco

5:00 am - 1:47 pmSEA Seattle/Tacoma Intl-RKS Rock Springs Sweetwater County

7h 47m1 stop Denver Intl

$499United Airlines

Sat, Aug 8 - Wed, Aug 12

5:05 am - 1:21 pmRKS Rock Springs Sweetwater County-SEA Seattle/Tacoma Intl

9h 16m1 stop Denver Intl

6:00 am - 10:23 pmSEA Seattle/Tacoma Intl-RKS Rock Springs Sweetwater County

15h 23m2 stops Los Angeles Los Angeles Denver Intl

$499United Airlines

Fri, Aug 7 - Mon, Aug 10

2:16 pm - 9:10 pmRKS Rock Springs Sweetwater County-SEA Seattle/Tacoma Intl

7h 54m1 stop Denver Intl

7:11 am - 10:21 pmSEA Seattle/Tacoma Intl-RKS Rock Springs Sweetwater County

14h 10m2 stops San Francisco Denver Intl

$499United Airlines

Thu, Aug 6 - Tue, Aug 11

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United Airlines flights from Rock Springs to State of Washington

Our best United Airlines deals on Rock Springs to State of Washington flight tickets

United Airlines

Sep 18

RKS2:22 pmRock Springs Sweetwater County

7h 53m

1 stop

SEA9:15 pmSeattle/Tacoma Intl

Sep 21

SEA5:00 amSeattle/Tacoma Intl

7h 47m

1 stop

RKS1:47 pmRock Springs Sweetwater County

$308

United Airlines

Sep 18

RKS2:22 pmRock Springs Sweetwater County

10h 04m

2 stops

SEA11:26 pmSeattle/Tacoma Intl

Sep 21

SEA5:00 amSeattle/Tacoma Intl

7h 47m

1 stop

RKS1:47 pmRock Springs Sweetwater County

$314

United Airlines

Aug 18

RKS5:05 amRock Springs Sweetwater County

7h 39m

1 stop

SEA11:44 amSeattle/Tacoma Intl

Aug 25

SEA1:16 pmSeattle/Tacoma Intl

8h 05m

2 stops

RKS10:21 pmRock Springs Sweetwater County

$329

momondo Fare Finder

Use the filters below to find and compare flights from Rock Springs to Washington that are best for you.

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

Fri 9/18

2:22 pm-9:15 pm

1 stop7h 53m

Seattle/Tacoma Intl

Mon 9/21

5:00 am-1:47 pm

1 stop7h 47m

$308

Rock SpringsSeattle

RKS Rock Springs Sweetwater County - SEA Seattle/Tacoma Intl

RKSSEA

Rock Springs Sweetwater County

Fri 9/18

2:22 pm-11:26 pm

2 stops10h 04m

Seattle/Tacoma Intl

Mon 9/21

5:00 am-1:47 pm

1 stop7h 47m

$314

Rock SpringsSeattle

RKS Rock Springs Sweetwater County - SEA Seattle/Tacoma Intl

RKSSEA

Rock Springs Sweetwater County

Tue 8/18

5:05 am-11:44 am

1 stop7h 39m

Seattle/Tacoma Intl

Tue 8/25

1:16 pm-10:21 pm

2 stops8h 05m

$329

Rock SpringsSeattle

RKS Rock Springs Sweetwater County - SEA Seattle/Tacoma Intl

RKSSEA

Rock Springs Sweetwater County

Tue 8/18

5:05 am-4:14 pm

2 stops12h 09m

Seattle/Tacoma Intl

Tue 8/25

1:16 pm-10:21 pm

2 stops8h 05m

$334

Quickest round-trip

Rock SpringsSeattle

RKS Rock Springs Sweetwater County - SEA Seattle/Tacoma Intl

RKSSEA

Rock Springs Sweetwater County

Sat 9/19

5:05 am-10:01 am

1 stop5h 56m

Seattle/Tacoma Intl

Wed 9/23

2:34 pm-10:21 pm

1 stop6h 47m

$388

Rock SpringsSeattle

RKS Rock Springs Sweetwater County - SEA Seattle/Tacoma Intl

RKSSEA

Rock Springs Sweetwater County

Sat 9/19

5:05 am-2:24 pm

2 stops10h 19m

Seattle/Tacoma Intl

Wed 9/23

12:44 pm-10:21 pm

1 stop8h 37m

$394

Rock SpringsSeattle

RKS Rock Springs Sweetwater County - SEA Seattle/Tacoma Intl

RKSSEA

Rock Springs Sweetwater County

Wed 8/19

5:05 am-11:44 am

1 stop7h 39m

Seattle/Tacoma Intl

Sun 8/23

5:00 am-1:47 pm

1 stop7h 47m

$396

Rock SpringsSeattle

RKS Rock Springs Sweetwater County - SEA Seattle/Tacoma Intl

RKSSEA

Rock Springs Sweetwater County

Sat 9/19

5:05 am-7:14 pm

2 stops15h 09m

Seattle/Tacoma Intl

Wed 9/23

9:00 am-10:21 pm

2 stops12h 21m

$399

Rock SpringsSeattle

RKS Rock Springs Sweetwater County - SEA Seattle/Tacoma Intl

RKSSEA

Rock Springs Sweetwater County

Wed 8/19

5:05 am-4:14 pm

2 stops12h 09m

Seattle/Tacoma Intl

Sun 8/23

5:00 am-1:47 pm

1 stop7h 47m

$401

Rock SpringsSeattle

RKS Rock Springs Sweetwater County - SEA Seattle/Tacoma Intl

RKSSEA

Rock Springs Sweetwater County

Fri 10/2

5:05 am-10:01 am

1 stop5h 56m

Seattle/Tacoma Intl

Sun 10/18

5:00 am-1:42 pm

1 stop7h 42m

$410

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first

How to get the cheapest flight ticket from Rock Springs to State of Washington

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Rock Springs Sweetwater County to Washington?

United Airlines is the most popular carrier operating from Rock Springs Sweetwater County to Washington

Cheap Rock Springs to State of Washington flight deals and tips

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

Fastest flight time	7h 39m
Direct flights	None

The fastest flight from Rock Springs to State of Washington takes 7h 39m

There are no direct flights from Rock Springs to State of Washington. There are no popular flight routes from Rock Springs to State of Washington.

Search flight deals

Frequently asked questions about flying from Rock Springs to Washington

When did momondo last update prices for flights from Rock Springs Sweetwater County Airport to Washington?
Prices for flights from Rock Springs Sweetwater County Airport to Washington are updated daily.
How many operators does momondo search for flights from Rock Springs Sweetwater County Airport to Washington?
The number of operators available for flights from Rock Springs Sweetwater County Airport to Washington is 1 as of August 2026.
How old do you have to be to fly from Rock Springs Sweetwater County Airport to Washington?
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 Washington.
What documentation or ID do you need to fly to Washington?
The required travel and health documents for your Washington trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Washington. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Rock Springs to State of Washington

Compare and see reviews for airlines that fly from Rock Springs to State of Washington with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $238	Free Cancellation	Rating 7.4 10,058 reviews		Search United Airlines flights

Why use momondo?

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

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 Washington from Rock Springs.

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

Yes. momondo allows you to filter the results for Rock Springs to Washington flights to just show those with flexible booking policies.

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

momondo helps you find the best flight between Rock Springs and Washington by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are simply researching potential flights to Washington, momondo offers a useful price alert feature which will track prices for flights to Washington from Rock Springs and alert you when they change.