Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from Washington, D.C. to Rock Springs from $368

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 12/6. 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

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

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

Cheap round-trip flights

United Airlines Logo
4:15 pm - 9:59 pmBWI-RKS
7h 44m1 stop
United Airlines Logo
1:56 pm - 11:00 pmRKS-BWI
7h 04m1 stop
$368United Airlines
Find Deal
Sat, Dec 6 - Mon, Dec 8
United Airlines Logo
10:20 am - 9:59 pmBWI-RKS
13h 39m2 stops
United Airlines Logo
1:56 pm - 11:00 pmRKS-BWI
7h 04m1 stop
$374United Airlines
Find Deal
Sat, Dec 6 - Mon, Dec 8
United Airlines Logo
1:10 pm - 9:59 pmBWI-RKS
10h 49m2 stops
United Airlines Logo
1:56 pm - 1:50 pmRKS-BWI
21h 54m2 stops
$448United Airlines
Find Deal
Sat, Dec 6 - Mon, Dec 8
United Airlines Logo
10:05 pm - 9:01 pmIAD-RKS
24h 56m2 stops
United Airlines Logo
5:25 am - 1:27 pmRKS-IAD
6h 02m1 stop
$453United Airlines
Find Deal
Sat, Mar 7 - Tue, Mar 10
United Airlines Logo
5:15 pm - 10:01 pmIAD-RKS
6h 46m1 stop
United Airlines Logo
2:05 pm - 11:13 pmRKS-IAD
7h 08m1 stop
$459United Airlines
Find Deal
Fri, Mar 6 - Tue, Mar 10
United Airlines Logo
8:15 am - 10:01 pmIAD-RKS
15h 46m2 stops
United Airlines Logo
5:25 am - 1:27 pmRKS-IAD
6h 02m1 stop
$478United Airlines
Find Deal
Fri, Mar 6 - Tue, Mar 10
United Airlines Logo
1:10 pm - 9:59 pmBWI-RKS
10h 49m2 stops
United Airlines Logo
1:56 pm - 9:19 pmRKS-BWI
29h 23m3 stops
$482United Airlines
Find Deal
Sat, Dec 6 - Mon, Dec 8
United Airlines Logo
5:15 pm - 10:01 pmIAD-RKS
6h 46m1 stop
United Airlines Logo
5:25 am - 1:27 pmRKS-IAD
6h 02m1 stop
$504United Airlines
Find Deal
Sat, Mar 7 - Tue, Mar 10
United Airlines Logo
8:15 am - 10:01 pmIAD-RKS
15h 46m2 stops
United Airlines Logo
5:25 am - 9:17 pmRKS-IAD
13h 52m2 stops
$532United Airlines
Find Deal
Fri, Mar 6 - Tue, Mar 10
United Airlines Logo
10:05 pm - 9:01 pmIAD-RKS
24h 56m2 stops
United Airlines Logo
2:05 pm - 11:55 amRKS-IAD
19h 50m2 stops
$537United Airlines
Find Deal
Sat, Mar 7 - Tue, Mar 10

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
Dec 6
BWI4:15 pmBaltimore/Washington
7h 44m
1 stop
RKS9:59 pmRock Springs Sweetwater County
Dec 8
RKS1:56 pmRock Springs Sweetwater County
7h 04m
1 stop
BWI11:00 pmBaltimore/Washington
$368
Find similar
United Airlines
Dec 6
BWI10:20 amBaltimore/Washington
13h 39m
2 stops
RKS9:59 pmRock Springs Sweetwater County
Dec 8
RKS1:56 pmRock Springs Sweetwater County
7h 04m
1 stop
BWI11:00 pmBaltimore/Washington
$374
Find similar
United Airlines
Dec 6
BWI1:10 pmBaltimore/Washington
10h 49m
2 stops
RKS9:59 pmRock Springs Sweetwater County
Dec 8
RKS1:56 pmRock Springs Sweetwater County
21h 54m
2 stops
BWI1:50 pmBaltimore/Washington
$448
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 September 17, 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

Sat 12/6

4:15 pm-9:59 pm

1 stop7h 44m

Rock Springs Sweetwater County

Mon 12/8

1:56 pm-11:00 pm

1 stop7h 04m

$368

BaltimoreRock Springs

BWI - RKS

BWIRKS

Baltimore/Washington

Sat 12/6

10:20 am-9:59 pm

2 stops13h 39m

Rock Springs Sweetwater County

Mon 12/8

1:56 pm-11:00 pm

1 stop7h 04m

$374

BaltimoreRock Springs

BWI - RKS

BWIRKS

Baltimore/Washington

Sat 12/6

1:10 pm-9:59 pm

2 stops10h 49m

Rock Springs Sweetwater County

Mon 12/8

1:56 pm-1:50 pm

2 stops21h 54m

$448

Washington, D.C.Rock Springs

IAD - RKS

IADRKS

Washington, D.C. Dulles Intl

Sat 3/7

10:05 pm-9:01 pm

2 stops24h 56m

Rock Springs Sweetwater County

Tue 3/10

5:25 am-1:27 pm

1 stop6h 02m

$453

Washington, D.C.Rock Springs

IAD - RKS

IADRKS

Washington, D.C. Dulles Intl

Fri 3/6

5:15 pm-10:01 pm

1 stop6h 46m

Rock Springs Sweetwater County

Tue 3/10

2:05 pm-11:13 pm

1 stop7h 08m

$459

Washington, D.C.Rock Springs

IAD - RKS

IADRKS

Washington, D.C. Dulles Intl

Fri 3/6

8:15 am-10:01 pm

2 stops15h 46m

Rock Springs Sweetwater County

Tue 3/10

5:25 am-1:27 pm

1 stop6h 02m

$478

BaltimoreRock Springs

BWI - RKS

BWIRKS

Baltimore/Washington

Sat 12/6

1:10 pm-9:59 pm

2 stops10h 49m

Rock Springs Sweetwater County

Mon 12/8

1:56 pm-9:19 pm

3 stops29h 23m

$482

Washington, D.C.Rock Springs

IAD - RKS

IADRKS

Washington, D.C. Dulles Intl

Sat 3/7

5:15 pm-10:01 pm

1 stop6h 46m

Rock Springs Sweetwater County

Tue 3/10

5:25 am-1:27 pm

1 stop6h 02m

$504

Washington, D.C.Rock Springs

IAD - RKS

IADRKS

Washington, D.C. Dulles Intl

Fri 3/6

8:15 am-10:01 pm

2 stops15h 46m

Rock Springs Sweetwater County

Tue 3/10

5:25 am-9:17 pm

2 stops13h 52m

$532

Washington, D.C.Rock Springs

IAD - RKS

IADRKS

Washington, D.C. Dulles Intl

Sat 3/7

10:05 pm-9:01 pm

2 stops24h 56m

Rock Springs Sweetwater County

Tue 3/10

2:05 pm-11:55 am

2 stops19h 50m

$537

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 resultsSorted by cheapest first
1
2

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

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

Direct flights

None
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 46m.

  • 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.

An easier way to manage your Rock Springs trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Fri 10/17
Fri 10/24
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States