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Cheap flights from Washington, D.C. to Rock Springs from $438

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 10/21. 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

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
8:37 am - 1:30 pm
BWI
-
RKS
6h 53m
1 stop
United Airlines Logo
5:25 am - 3:07 pm
RKS
-
BWI
7h 42m
1 stop
$438United Airlines
Wed, Oct 21 - Sat, Oct 24
United Airlines Logo
5:27 pm - 10:01 pm
IAD
-
RKS
6h 34m
1 stop
United Airlines Logo
5:25 am - 5:35 pm
RKS
-
IAD
10h 10m
1 stop
$438United Airlines
Tue, Oct 20 - Sat, Oct 24
United Airlines Logo
4:13 pm - 10:01 pm
BWI
-
RKS
7h 48m
1 stop
United Airlines Logo
5:25 am - 4:27 pm
RKS
-
BWI
9h 02m
2 stops
$444United Airlines
Wed, Oct 21 - Sat, Oct 24
United Airlines Logo
9:09 am - 10:01 pm
BWI
-
RKS
14h 52m
2 stops
United Airlines Logo
5:25 am - 4:27 pm
RKS
-
BWI
9h 02m
2 stops
$449United Airlines
Wed, Oct 21 - Sat, Oct 24
United Airlines Logo
1:00 pm - 10:21 pm
BWI
-
RKS
11h 21m
2 stops
United Airlines Logo
5:05 am - 9:29 pm
RKS
-
BWI
14h 24m
2 stops
$484United Airlines
Sat, Aug 22 - Sat, Aug 29
United Airlines Logo
12:52 pm - 1:30 pm
IAD
-
RKS
26h 38m
2 stops
United Airlines Logo
5:25 am - 1:30 pm
RKS
-
IAD
6h 05m
1 stop
$503United Airlines
Tue, Oct 20 - Sat, Oct 24
United Airlines Logo
4:23 pm - 10:23 pm
BWI
-
RKS
8h 00m
1 stop
United Airlines Logo
5:05 am - 3:12 pm
RKS
-
BWI
8h 07m
1 stop
$505United Airlines
Wed, Aug 5 - Fri, Aug 14
United Airlines Logo
8:16 am - 10:23 pm
BWI
-
RKS
16h 07m
2 stops
United Airlines Logo
5:05 am - 9:29 pm
RKS
-
BWI
14h 24m
2 stops
$519United Airlines
Wed, Aug 5 - Fri, Aug 14
United Airlines Logo
4:20 pm - 10:21 pm
DCA
-
RKS
8h 01m
1 stop
United Airlines Logo
2:22 pm - 1:04 pm
RKS
-
DCA
20h 42m
2 stops
$537United Airlines
Sat, Sep 19 - Tue, Sep 22
United Airlines Logo
4:23 pm - 10:23 pm
BWI
-
RKS
8h 00m
1 stop
United Airlines Logo
5:05 am - 6:42 pm
RKS
-
BWI
11h 37m
2 stops
$559United Airlines
Wed, Aug 5 - Fri, Aug 14

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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
Oct 21
BWI8:37 amBaltimore/Washington
6h 53m
1 stop
RKS1:30 pmRock Springs Sweetwater County
Oct 24
RKS5:25 amRock Springs Sweetwater County
7h 42m
1 stop
BWI3:07 pmBaltimore/Washington
$438
United Airlines
Oct 21
BWI4:13 pmBaltimore/Washington
7h 48m
1 stop
RKS10:01 pmRock Springs Sweetwater County
Oct 24
RKS5:25 amRock Springs Sweetwater County
9h 02m
2 stops
BWI4:27 pmBaltimore/Washington
$444
United Airlines
Oct 21
BWI9:09 amBaltimore/Washington
14h 52m
2 stops
RKS10:01 pmRock Springs Sweetwater County
Oct 24
RKS5:25 amRock Springs Sweetwater County
9h 02m
2 stops
BWI4:27 pmBaltimore/Washington
$449

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 June 17, 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
Quickest round-trip

BaltimoreRock Springs

BWI - RKS

BWIRKS

Baltimore/Washington

Wed 10/21

8:37 am-1:30 pm

1 stop6h 53m

Rock Springs Sweetwater County

Sat 10/24

5:25 am-3:07 pm

1 stop7h 42m

$438

Washington, D.C.Rock Springs

IAD - RKS

IADRKS

Washington, D.C. Dulles Intl

Tue 10/20

5:27 pm-10:01 pm

1 stop6h 34m

Rock Springs Sweetwater County

Sat 10/24

5:25 am-5:35 pm

1 stop10h 10m

$438

BaltimoreRock Springs

BWI - RKS

BWIRKS

Baltimore/Washington

Wed 10/21

4:13 pm-10:01 pm

1 stop7h 48m

Rock Springs Sweetwater County

Sat 10/24

5:25 am-4:27 pm

2 stops9h 02m

$444

BaltimoreRock Springs

BWI - RKS

BWIRKS

Baltimore/Washington

Wed 10/21

9:09 am-10:01 pm

2 stops14h 52m

Rock Springs Sweetwater County

Sat 10/24

5:25 am-4:27 pm

2 stops9h 02m

$449

BaltimoreRock Springs

BWI - RKS

BWIRKS

Baltimore/Washington

Sat 8/22

1:00 pm-10:21 pm

2 stops11h 21m

Rock Springs Sweetwater County

Sat 8/29

5:05 am-9:29 pm

2 stops14h 24m

$484

Washington, D.C.Rock Springs

IAD - RKS

IADRKS

Washington, D.C. Dulles Intl

Tue 10/20

12:52 pm-1:30 pm

2 stops26h 38m

Rock Springs Sweetwater County

Sat 10/24

5:25 am-1:30 pm

1 stop6h 05m

$503

BaltimoreRock Springs

BWI - RKS

BWIRKS

Baltimore/Washington

Wed 8/5

4:23 pm-10:23 pm

1 stop8h 00m

Rock Springs Sweetwater County

Fri 8/14

5:05 am-3:12 pm

1 stop8h 07m

$505

BaltimoreRock Springs

BWI - RKS

BWIRKS

Baltimore/Washington

Wed 8/5

8:16 am-10:23 pm

2 stops16h 07m

Rock Springs Sweetwater County

Fri 8/14

5:05 am-9:29 pm

2 stops14h 24m

$519

Washington, D.C.Rock Springs

DCA - RKS

DCARKS

Washington, D.C. Reagan-National

Sat 9/19

4:20 pm-10:21 pm

1 stop8h 01m

Rock Springs Sweetwater County

Tue 9/22

2:22 pm-1:04 pm

2 stops20h 42m

$537

BaltimoreRock Springs

BWI - RKS

BWIRKS

Baltimore/Washington

Wed 8/5

4:23 pm-10:23 pm

1 stop8h 00m

Rock Springs Sweetwater County

Fri 8/14

5:05 am-6:42 pm

2 stops11h 37m

$559

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 6h 53m 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 17m. 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

Frequently asked questions about flying from Washington, D.C. to Rock Springs

  • 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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