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Cheap flights from Washington, D.C. to Rock Springs from $388

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 1/13. 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
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
4:10 pm - 10:15 pm
BWI
-
RKS
8h 05m1 stop
United Airlines Logo
2:08 pm - 11:15 pm
RKS
-
BWI
7h 07m1 stop
$388United Airlines
Tue, Jan 13 - Sat, Jan 17
United Airlines Logo
8:15 am - 1:33 pm
IAD
-
RKS
7h 18m1 stop
United Airlines Logo
5:15 am - 4:35 pm
RKS
-
IAD
9h 20m1 stop
$388United Airlines
Sat, Jan 24 - Wed, Jan 28
United Airlines Logo
10:05 am - 10:15 pm
BWI
-
RKS
14h 10m2 stops
United Airlines Logo
2:08 pm - 11:15 pm
RKS
-
BWI
7h 07m1 stop
$394United Airlines
Tue, Jan 13 - Sat, Jan 17
United Airlines Logo
10:05 am - 10:15 pm
BWI
-
RKS
14h 10m2 stops
United Airlines Logo
5:15 am - 9:21 pm
RKS
-
BWI
14h 06m2 stops
$399United Airlines
Tue, Jan 13 - Sat, Jan 17
United Airlines Logo
4:09 pm - 10:13 pm
BWI
-
RKS
8h 04m1 stop
United Airlines Logo
5:15 am - 9:42 pm
RKS
-
BWI
14h 27m2 stops
$464United Airlines
Mon, Mar 2 - Sat, Mar 7
United Airlines Logo
6:30 am - 1:33 pm
BWI
-
RKS
9h 03m2 stops
United Airlines Logo
5:15 am - 9:42 pm
RKS
-
BWI
14h 27m2 stops
$469United Airlines
Mon, Mar 2 - Sat, Mar 7
United Airlines Logo
8:15 am - 1:33 pm
IAD
-
RKS
7h 18m1 stop
United Airlines Logo
2:08 pm - 7:30 am
RKS
-
IAD
15h 22m2 stops
$473United Airlines
Sat, Jan 24 - Wed, Jan 28
United Airlines Logo
4:11 pm - 10:15 pm
DCA
-
RKS
8h 04m1 stop
United Airlines Logo
5:15 am - 2:59 pm
RKS
-
DCA
7h 44m1 stop
$484United Airlines
Sat, Jan 24 - Wed, Jan 28
United Airlines Logo
4:09 pm - 10:13 pm
BWI
-
RKS
8h 04m1 stop
United Airlines Logo
2:10 pm - 11:19 pm
RKS
-
BWI
7h 09m1 stop
$493United Airlines
Mon, Mar 2 - Sat, Mar 7
United Airlines Logo
6:30 am - 1:33 pm
BWI
-
RKS
9h 03m2 stops
United Airlines Logo
5:15 am - 9:42 pm
RKS
-
BWI
14h 27m2 stops
$494United Airlines
Mon, Mar 2 - Sat, Mar 7

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
Jan 13
BWI4:10 pmBaltimore/Washington
8h 05m
1 stop
RKS10:15 pmRock Springs Sweetwater County
Jan 17
RKS2:08 pmRock Springs Sweetwater County
7h 07m
1 stop
BWI11:15 pmBaltimore/Washington
$388
Find similar
United Airlines
Jan 13
BWI10:05 amBaltimore/Washington
14h 10m
2 stops
RKS10:15 pmRock Springs Sweetwater County
Jan 17
RKS2:08 pmRock Springs Sweetwater County
7h 07m
1 stop
BWI11:15 pmBaltimore/Washington
$394
Find similar
United Airlines
Jan 13
BWI10:05 amBaltimore/Washington
14h 10m
2 stops
RKS10:15 pmRock Springs Sweetwater County
Jan 17
RKS5:15 amRock Springs Sweetwater County
14h 06m
2 stops
BWI9:21 pmBaltimore/Washington
$399
Find similar

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 December 18, 2025.
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

BaltimoreRock Springs

BWI - RKS

BWIRKS

Baltimore/Washington

Tue 1/13

4:10 pm-10:15 pm

1 stop8h 05m

Rock Springs Sweetwater County

Sat 1/17

2:08 pm-11:15 pm

1 stop7h 07m

$388

Washington, D.C.Rock Springs

IAD - RKS

IADRKS

Washington, D.C. Dulles Intl

Sat 1/24

8:15 am-1:33 pm

1 stop7h 18m

Rock Springs Sweetwater County

Wed 1/28

5:15 am-4:35 pm

1 stop9h 20m

$388

BaltimoreRock Springs

BWI - RKS

BWIRKS

Baltimore/Washington

Tue 1/13

10:05 am-10:15 pm

2 stops14h 10m

Rock Springs Sweetwater County

Sat 1/17

2:08 pm-11:15 pm

1 stop7h 07m

$394

BaltimoreRock Springs

BWI - RKS

BWIRKS

Baltimore/Washington

Tue 1/13

10:05 am-10:15 pm

2 stops14h 10m

Rock Springs Sweetwater County

Sat 1/17

5:15 am-9:21 pm

2 stops14h 06m

$399

BaltimoreRock Springs

BWI - RKS

BWIRKS

Baltimore/Washington

Mon 3/2

4:09 pm-10:13 pm

1 stop8h 04m

Rock Springs Sweetwater County

Sat 3/7

5:15 am-9:42 pm

2 stops14h 27m

$464

BaltimoreRock Springs

BWI - RKS

BWIRKS

Baltimore/Washington

Mon 3/2

6:30 am-1:33 pm

2 stops9h 03m

Rock Springs Sweetwater County

Sat 3/7

5:15 am-9:42 pm

2 stops14h 27m

$469

Washington, D.C.Rock Springs

IAD - RKS

IADRKS

Washington, D.C. Dulles Intl

Sat 1/24

8:15 am-1:33 pm

1 stop7h 18m

Rock Springs Sweetwater County

Wed 1/28

2:08 pm-7:30 am

2 stops15h 22m

$473

Washington, D.C.Rock Springs

DCA - RKS

DCARKS

Washington, D.C. Reagan-National

Sat 1/24

4:11 pm-10:15 pm

1 stop8h 04m

Rock Springs Sweetwater County

Wed 1/28

5:15 am-2:59 pm

1 stop7h 44m

$484

BaltimoreRock Springs

BWI - RKS

BWIRKS

Baltimore/Washington

Mon 3/2

4:09 pm-10:13 pm

1 stop8h 04m

Rock Springs Sweetwater County

Sat 3/7

2:10 pm-11:19 pm

1 stop7h 09m

$493

BaltimoreRock Springs

BWI - RKS

BWIRKS

Baltimore/Washington

Mon 3/2

6:30 am-1:33 pm

2 stops9h 03m

Rock Springs Sweetwater County

Sat 3/7

5:15 am-9:42 pm

2 stops14h 27m

$494

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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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

What is the cheapest time of day to depart on your flight to Rock Springs?

In the evening is the cheapest time of day to fly from Washington, D.C. to Rock Springs when you can find flight prices for as low as $427. Flying to Rock Springs in the evening is an ideal time because this is during off-peak travel hours. In the afternoon is when there is more demand to fly to Rock Springs, so prices are often more expensive at around $637 per ticket.

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

7h 18m

Direct flights

None
The fastest flight from Washington, D.C. to Rock Springs takes 7h 18m
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 7h 18m.

  • 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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