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Cheap flights from Washington, D.C. to Rock Springs from $372

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. to Rock Springs departing on 5/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Find the cheapest flights from Washington, D.C. to Rock Springs

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
6:30 am - 1:31 pm
IAD
-
RKS
9h 01m
1 stop
United Airlines Logo
2:16 pm - 12:45 am
RKS
-
IAD
8h 29m
1 stop
$372United Airlines
Thu, May 21 - Mon, May 25
United Airlines Logo
4:23 pm - 10:15 pm
BWI
-
RKS
7h 52m
1 stop
United Airlines Logo
1:46 pm - 12:33 am
RKS
-
BWI
8h 47m
2 stops
$382United Airlines
Wed, May 27 - Sat, May 30
United Airlines Logo
6:30 am - 1:31 pm
IAD
-
RKS
9h 01m
1 stop
United Airlines Logo
1:46 pm - 11:32 pm
RKS
-
IAD
7h 46m
1 stop
$404United Airlines
Wed, May 27 - Sat, May 30
United Airlines Logo
4:23 pm - 10:15 pm
BWI
-
RKS
7h 52m
1 stop
United Airlines Logo
1:46 pm - 11:30 pm
RKS
-
BWI
7h 44m
1 stop
$434United Airlines
Wed, May 27 - Sat, May 30
United Airlines Logo
5:20 pm - 10:15 pm
IAD
-
RKS
6h 55m
1 stop
United Airlines Logo
5:15 am - 1:14 pm
RKS
-
IAD
5h 59m
1 stop
$448United Airlines
Tue, Apr 21 - Sat, Apr 25
United Airlines Logo
5:20 pm - 10:15 pm
IAD
-
RKS
6h 55m
1 stop
United Airlines Logo
5:15 am - 1:14 pm
RKS
-
IAD
5h 59m
1 stop
$458United Airlines
Tue, Apr 21 - Sat, Apr 25
United Airlines Logo
8:00 am - 1:30 pm
BWI
-
RKS
7h 30m
1 stop
United Airlines Logo
5:15 am - 9:02 pm
RKS
-
BWI
13h 47m
2 stops
$479United Airlines
Wed, Apr 29 - Sat, May 2
United Airlines Logo
8:00 am - 1:30 pm
BWI
-
RKS
7h 30m
1 stop
United Airlines Logo
2:15 pm - 11:27 pm
RKS
-
BWI
7h 12m
1 stop
$483United Airlines
Wed, Apr 29 - Sat, May 2
United Airlines Logo
8:15 am - 10:15 pm
BWI
-
RKS
16h 00m
2 stops
United Airlines Logo
1:46 pm - 12:33 am
RKS
-
BWI
8h 47m
2 stops
$484United Airlines
Wed, May 27 - Sat, May 30
United Airlines Logo
8:00 am - 1:30 pm
BWI
-
RKS
7h 30m
1 stop
United Airlines Logo
5:15 am - 9:02 pm
RKS
-
BWI
13h 47m
2 stops
$489United Airlines
Wed, Apr 29 - Sat, May 2

United Airlines flights from Washington, D.C. to Rock Springs

Our best United Airlines deals on Washington, D.C. to Rock Springs flight tickets
United Airlines
May 21
IAD6:30 amWashington, D.C. Dulles Intl
9h 01m
1 stop
RKS1:31 pmRock Springs Sweetwater County
May 25
RKS2:16 pmRock Springs Sweetwater County
8h 29m
1 stop
IAD12:45 amWashington, D.C. Dulles Intl
$372
United Airlines
May 27
BWI4:23 pmBaltimore/Washington
7h 52m
1 stop
RKS10:15 pmRock Springs Sweetwater County
May 30
RKS1:46 pmRock Springs Sweetwater County
8h 47m
2 stops
BWI12:33 amBaltimore/Washington
$382
United Airlines
May 27
IAD6:30 amWashington, D.C. Dulles Intl
9h 01m
1 stop
RKS1:31 pmRock Springs Sweetwater County
May 30
RKS1:46 pmRock Springs Sweetwater County
7h 46m
1 stop
IAD11:32 pmWashington, D.C. Dulles Intl
$404

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. to Rock Springs that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated March 22, 2026.
Use the filters below to find and compare flights from Washington, D.C. to Rock Springs that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Rock Springs

IAD - RKS

IADRKS

Washington, D.C. Dulles Intl

Thu 5/21

6:30 am-1:31 pm

1 stop9h 01m

Rock Springs Sweetwater County

Mon 5/25

2:16 pm-12:45 am

1 stop8h 29m

$372

BaltimoreRock Springs

BWI - RKS

BWIRKS

Baltimore/Washington

Wed 5/27

4:23 pm-10:15 pm

1 stop7h 52m

Rock Springs Sweetwater County

Sat 5/30

1:46 pm-12:33 am

2 stops8h 47m

$382

Washington, D.C.Rock Springs

IAD - RKS

IADRKS

Washington, D.C. Dulles Intl

Wed 5/27

6:30 am-1:31 pm

1 stop9h 01m

Rock Springs Sweetwater County

Sat 5/30

1:46 pm-11:32 pm

1 stop7h 46m

$404

BaltimoreRock Springs

BWI - RKS

BWIRKS

Baltimore/Washington

Wed 5/27

4:23 pm-10:15 pm

1 stop7h 52m

Rock Springs Sweetwater County

Sat 5/30

1:46 pm-11:30 pm

1 stop7h 44m

$434
Quickest round-trip

Washington, D.C.Rock Springs

IAD - RKS

IADRKS

Washington, D.C. Dulles Intl

Tue 4/21

5:20 pm-10:15 pm

1 stop6h 55m

Rock Springs Sweetwater County

Sat 4/25

5:15 am-1:14 pm

1 stop5h 59m

$448

Washington, D.C.Rock Springs

IAD - RKS

IADRKS

Washington, D.C. Dulles Intl

Tue 4/21

5:20 pm-10:15 pm

1 stop6h 55m

Rock Springs Sweetwater County

Sat 4/25

5:15 am-1:14 pm

1 stop5h 59m

$458

BaltimoreRock Springs

BWI - RKS

BWIRKS

Baltimore/Washington

Wed 4/29

8:00 am-1:30 pm

1 stop7h 30m

Rock Springs Sweetwater County

Sat 5/2

5:15 am-9:02 pm

2 stops13h 47m

$479

BaltimoreRock Springs

BWI - RKS

BWIRKS

Baltimore/Washington

Wed 4/29

8:00 am-1:30 pm

1 stop7h 30m

Rock Springs Sweetwater County

Sat 5/2

2:15 pm-11:27 pm

1 stop7h 12m

$483

BaltimoreRock Springs

BWI - RKS

BWIRKS

Baltimore/Washington

Wed 5/27

8:15 am-10:15 pm

2 stops16h 00m

Rock Springs Sweetwater County

Sat 5/30

1:46 pm-12:33 am

2 stops8h 47m

$484

BaltimoreRock Springs

BWI - RKS

BWIRKS

Baltimore/Washington

Wed 4/29

8:00 am-1:30 pm

1 stop7h 30m

Rock Springs Sweetwater County

Sat 5/2

5:15 am-9:02 pm

2 stops13h 47m

$489

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Rock Springs from

How to get the cheapest flight ticket from Washington, D.C. to Rock Springs

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

How long does it take to fly to Rock Springs?

Flight times from Washington, D.C. to Rock Springs vary, but if you’re flying out of Baltimore and flying into Rock Springs (one of the most popular routes), then the duration is 7h 01m on average. Another popular route from Washington, D.C. to Rock Springs is flying from Washington, D.C. to Rock Springs, which will take roughly 7h 18m. Keep in mind that layovers or delays could extend your travel time.

When to book flights from Washington, D.C. to Rock Springs

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. to Rock Springs according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Washington, D.C. to Rock Springs (WAS to RKS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. to Rock Springs

Fastest flight time

6h 34m

Direct flights

None
The fastest flight from Washington, D.C. to Rock Springs takes 6h 34m
There are no direct flights from Washington, D.C. to Rock Springs. There are no popular flight routes from Washington, D.C. to Rock Springs.
Search flight deals

  • How far is Washington, D.C. to Rock Springs Sweetwater County by plane?

    A flight from Washington, D.C. to Rock Springs Sweetwater County will travel around 1695.5 mi. By plane, this route typically takes 6h 34m.

  • When did momondo last update prices for flights from Washington, D.C. to Rock Springs Sweetwater County Airport?

    Prices for flights from Washington, D.C. to Rock Springs Sweetwater County Airport were last updated today.

  • How old do you have to be to fly from Washington, D.C. to Rock Springs Sweetwater County Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington, D.C. to Rock Springs Sweetwater County Airport.

  • What documentation or ID do you need to fly to Rock Springs Sweetwater County Airport?

    The necessary travel and health documents for your Rock Springs Sweetwater County 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.

Traveling to a place near Rock Springs?

Book flights to Rock Springs if you plan to visit one of these locations
Green River

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to Rock Springs?

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 Rock Springs from Washington, D.C..

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

Flights from Washington, D.C. to Rock Springs 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 Washington, D.C. to Rock Springs?

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 Washington, D.C. to Rock Springs.

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

Yes momondo offers price alerts on flights to Rock Springs from Washington, D.C.. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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