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Cheap flights from Montana to Rock Springs from $363

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Montana to Rock Springs departing on 5/29. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Montana to Rock Springs

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
5:20 pm - 10:15 pm
MSO
-
RKS
4h 55m
1 stop
United Airlines Logo
5:05 am - 1:24 pm
RKS
-
MSO
8h 19m
1 stop
$363United Airlines
Fri, May 29 - Tue, Jun 2
United Airlines Logo
6:15 am - 1:31 pm
MSO
-
RKS
7h 16m
1 stop
United Airlines Logo
5:05 am - 1:24 pm
RKS
-
MSO
8h 19m
1 stop
$368United Airlines
Fri, May 29 - Tue, Jun 2
United Airlines Logo
6:15 am - 1:31 pm
MSO
-
RKS
7h 16m
1 stop
United Airlines Logo
5:05 am - 1:24 pm
RKS
-
MSO
8h 19m
1 stop
$378United Airlines
Fri, May 29 - Tue, Jun 2
United Airlines Logo
2:33 pm - 10:15 pm
FCA
-
RKS
7h 42m
1 stop
United Airlines Logo
5:05 am - 1:30 pm
RKS
-
FCA
8h 25m
1 stop
$484United Airlines
Fri, May 29 - Mon, Jun 1
United Airlines Logo
5:20 pm - 10:15 pm
MSO
-
RKS
4h 55m
1 stop
United Airlines Logo
2:16 pm - 10:36 pm
RKS
-
MSO
32h 20m
2 stops
$558United Airlines
Fri, May 29 - Tue, Jun 2
United Airlines Logo
4:19 pm - 1:11 pm
MSO
-
RKS
20h 52m
2 stops
United Airlines Logo
2:16 pm - 9:34 pm
RKS
-
MSO
7h 18m
1 stop
$563United Airlines
Fri, May 29 - Tue, Jun 2
United Airlines Logo
4:19 pm - 1:11 pm
MSO
-
RKS
20h 52m
2 stops
United Airlines Logo
5:05 am - 1:24 pm
RKS
-
MSO
8h 19m
1 stop
$568United Airlines
Fri, May 29 - Tue, Jun 2
United Airlines Logo
4:19 pm - 1:11 pm
MSO
-
RKS
20h 52m
2 stops
United Airlines Logo
5:05 am - 1:24 pm
RKS
-
MSO
8h 19m
1 stop
$578United Airlines
Fri, May 29 - Tue, Jun 2
United Airlines Logo
6:20 am - 1:31 pm
FCA
-
RKS
7h 11m
1 stop
United Airlines Logo
2:16 pm - 11:29 am
RKS
-
FCA
21h 13m
2 stops
$613United Airlines
Fri, May 29 - Mon, Jun 1
United Airlines Logo
5:28 pm - 10:15 pm
FCA
-
RKS
4h 47m
1 stop
United Airlines Logo
2:16 pm - 11:29 am
RKS
-
FCA
21h 13m
2 stops
$623United Airlines
Fri, May 29 - Mon, Jun 1

United Airlines flights from Montana to Rock Springs

Our best United Airlines deals on Montana to Rock Springs flight tickets
United Airlines
May 29
MSO5:20 pmMissoula Johnson-Bell Field
4h 55m
1 stop
RKS10:15 pmRock Springs Sweetwater County
Jun 2
RKS5:05 amRock Springs Sweetwater County
8h 19m
1 stop
MSO1:24 pmMissoula Johnson-Bell Field
$363
United Airlines
May 29
MSO6:15 amMissoula Johnson-Bell Field
7h 16m
1 stop
RKS1:31 pmRock Springs Sweetwater County
Jun 2
RKS5:05 amRock Springs Sweetwater County
8h 19m
1 stop
MSO1:24 pmMissoula Johnson-Bell Field
$368
United Airlines
May 29
MSO6:15 amMissoula Johnson-Bell Field
7h 16m
1 stop
RKS1:31 pmRock Springs Sweetwater County
Jun 2
RKS5:05 amRock Springs Sweetwater County
8h 19m
1 stop
MSO1:24 pmMissoula Johnson-Bell Field
$378

momondo Fare Finder

 
Customize your flight search to find flights from Montana 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 May 15, 2026.
Use the filters below to find and compare flights from Montana to Rock Springs that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

MissoulaRock Springs

MSO - RKS

MSORKS

Missoula Johnson-Bell Field

Fri 5/29

5:20 pm-10:15 pm

1 stop4h 55m

Rock Springs Sweetwater County

Tue 6/2

5:05 am-1:24 pm

1 stop8h 19m

$363

MissoulaRock Springs

MSO - RKS

MSORKS

Missoula Johnson-Bell Field

Fri 5/29

6:15 am-1:31 pm

1 stop7h 16m

Rock Springs Sweetwater County

Tue 6/2

5:05 am-1:24 pm

1 stop8h 19m

$368

MissoulaRock Springs

MSO - RKS

MSORKS

Missoula Johnson-Bell Field

Fri 5/29

6:15 am-1:31 pm

1 stop7h 16m

Rock Springs Sweetwater County

Tue 6/2

5:05 am-1:24 pm

1 stop8h 19m

$378

KalispellRock Springs

FCA - RKS

FCARKS

Kalispell Glacier Park

Fri 5/29

2:33 pm-10:15 pm

1 stop7h 42m

Rock Springs Sweetwater County

Mon 6/1

5:05 am-1:30 pm

1 stop8h 25m

$484

MissoulaRock Springs

MSO - RKS

MSORKS

Missoula Johnson-Bell Field

Fri 5/29

5:20 pm-10:15 pm

1 stop4h 55m

Rock Springs Sweetwater County

Tue 6/2

2:16 pm-10:36 pm

2 stops32h 20m

$558

MissoulaRock Springs

MSO - RKS

MSORKS

Missoula Johnson-Bell Field

Fri 5/29

4:19 pm-1:11 pm

2 stops20h 52m

Rock Springs Sweetwater County

Tue 6/2

2:16 pm-9:34 pm

1 stop7h 18m

$563

MissoulaRock Springs

MSO - RKS

MSORKS

Missoula Johnson-Bell Field

Fri 5/29

4:19 pm-1:11 pm

2 stops20h 52m

Rock Springs Sweetwater County

Tue 6/2

5:05 am-1:24 pm

1 stop8h 19m

$568

MissoulaRock Springs

MSO - RKS

MSORKS

Missoula Johnson-Bell Field

Fri 5/29

4:19 pm-1:11 pm

2 stops20h 52m

Rock Springs Sweetwater County

Tue 6/2

5:05 am-1:24 pm

1 stop8h 19m

$578

KalispellRock Springs

FCA - RKS

FCARKS

Kalispell Glacier Park

Fri 5/29

6:20 am-1:31 pm

1 stop7h 11m

Rock Springs Sweetwater County

Mon 6/1

2:16 pm-11:29 am

2 stops21h 13m

$613

KalispellRock Springs

FCA - RKS

FCARKS

Kalispell Glacier Park

Fri 5/29

5:28 pm-10:15 pm

1 stop4h 47m

Rock Springs Sweetwater County

Mon 6/1

2:16 pm-11:29 am

2 stops21h 13m

$623

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 Montana 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 Montana to Rock Springs vary, but if you’re flying out of Kalispell and flying into Rock Springs (one of the most popular routes), then the duration is 4h 37m on average. Another popular route from Montana to Rock Springs is flying from Missoula to Rock Springs, which will take roughly 7h 16m. Keep in mind that layovers or delays could extend your travel time.

Cheap Montana to Rock Springs flight deals and tips

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

Fastest flight time

4h 37m

Direct flights

None
The fastest flight from Montana to Rock Springs takes 4h 37m
There are no direct flights from Montana to Rock Springs. There are no popular flight routes from Montana to Rock Springs.
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Frequently asked questions about flying from Montana to Rock Springs

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

    Prices for flights from Montana to Rock Springs Sweetwater County Airport were last updated today.

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Montana to Rock Springs Sweetwater County Airport.

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

    The travel and health documents you'll need for your trip to Rock Springs Sweetwater County Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Rock Springs Sweetwater County Airport. It is always advisable to seek 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 Montana to Rock Springs?

Finding the right flight to Rock Springs from Montana is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Rock Springs quick and easy, saving you time and money.

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

Flights from Montana 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 Montana to Rock Springs?

Once you have performed a search for Montana to Rock Springs flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Of course. momondo tracks the price of Montana to Rock Springs flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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