RKS

$197 Find Cheap Flights to Rock Springs - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$261
Typical prices: $328-$558
United Airlines
Mon 10/15Thu 10/18
DEN - RKS • Non-stop
Cheapest non-stop
$261
Typical prices: $290-$594
United Airlines
Mon 10/1Sun 10/7
DEN - RKS • Non-stop
Nonstop flights
Every day
You can fly direct with United Airlines. Average duration is 1h 12m
FAQs
FAQs
Top airlines
United Airlines
Most flights • 14 per week
United Airlines
Best reviews • 7.4 score
Airline reviews
+1
Airline reviews
+1
Top routes
GRR - RKS
Cheapest • 48% average savings
PIT - RKS
Most popular
Insights
Insights
When to travel
January
Cheapest • 26% price drop
June
Most popular
Good to know
+1
Good to know
+1
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We hope you love your trip to Rock Springs!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights to Rock Springs

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals to Rock Springs

Thu, Oct 15 - Sun, Oct 18
United Airlines Logo
9:10 pm - 10:21 pmDEN  Denver Intl-RKS Rock Springs Sweetwater County
1h 11mnonstop
United Airlines Logo
2:22 pm - 3:40 pmRKS  Rock Springs Sweetwater County-DEN Denver Intl
1h 18mnonstop
$261United Airlines
Sat, Sep 12 - Wed, Sep 16
United Airlines Logo
9:10 pm - 10:21 pmDEN  Denver Intl-RKS Rock Springs Sweetwater County
1h 11mnonstop
United Airlines Logo
5:05 am - 6:23 amRKS  Rock Springs Sweetwater County-DEN Denver Intl
1h 18mnonstop
$261United Airlines
Fri, Sep 11 - Tue, Sep 15
United Airlines Logo
12:35 pm - 1:47 pmDEN  Denver Intl-RKS Rock Springs Sweetwater County
1h 12mnonstop
United Airlines Logo
2:22 pm - 3:40 pmRKS  Rock Springs Sweetwater County-DEN Denver Intl
1h 18mnonstop
$261United Airlines
Sat, Sep 26 - Sat, Oct 3
United Airlines Logo
12:30 pm - 1:42 pmDEN  Denver Intl-RKS Rock Springs Sweetwater County
1h 12mnonstop
United Airlines Logo
2:22 pm - 3:40 pmRKS  Rock Springs Sweetwater County-DEN Denver Intl
1h 18mnonstop
$261United Airlines
Thu, Oct 15 - Mon, Oct 19
United Airlines Logo
12:30 pm - 1:42 pmDEN  Denver Intl-RKS Rock Springs Sweetwater County
1h 12mnonstop
United Airlines Logo
5:05 am - 6:23 amRKS  Rock Springs Sweetwater County-DEN Denver Intl
1h 18mnonstop
$261United Airlines
Thu, Oct 1 - Wed, Oct 7
United Airlines Logo
12:30 pm - 1:42 pmDEN  Denver Intl-RKS Rock Springs Sweetwater County
1h 12mnonstop
United Airlines Logo
5:05 am - 6:23 amRKS  Rock Springs Sweetwater County-DEN Denver Intl
1h 18mnonstop
$261United Airlines
Thu, Sep 17 - Mon, Sep 21
United Airlines Logo
12:35 pm - 1:47 pmDEN  Denver Intl-RKS Rock Springs Sweetwater County
1h 12mnonstop
United Airlines Logo
2:22 pm - 3:40 pmRKS  Rock Springs Sweetwater County-DEN Denver Intl
1h 18mnonstop
$281United Airlines
Thu, Sep 17 - Sun, Sep 20
United Airlines Logo
9:10 pm - 10:21 pmDEN  Denver Intl-RKS Rock Springs Sweetwater County
1h 11mnonstop
United Airlines Logo
5:05 am - 6:23 amRKS  Rock Springs Sweetwater County-DEN Denver Intl
1h 18mnonstop
$281United Airlines
Sat, Oct 10 - Fri, Oct 16
United Airlines Logo
5:00 am - 1:42 pmPDX  Portland-RKS Rock Springs Sweetwater County
7h 42m1 stop Denver Intl
United Airlines Logo
2:22 pm - 9:10 pmRKS  Rock Springs Sweetwater County-PDX Portland
7h 48m1 stop Denver Intl
$308United Airlines
Sat, Oct 10 - Fri, Oct 16
United Airlines Logo
1:13 pm - 10:21 pmPDX  Portland-RKS Rock Springs Sweetwater County
8h 08m2 stops San Francisco Denver Intl
United Airlines Logo
2:22 pm - 9:10 pmRKS  Rock Springs Sweetwater County-PDX Portland
7h 48m1 stop Denver Intl
$314United Airlines
Booking Insights

Price, demand and travel trends for United States to Rock Springs flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from the United States to Rock Springs with more confidence.

What is the cheapest flight to Rock Springs?

Denver to Rock Springs is the cheapest route at $261 round-trip, found in the past 5 days on KAYAK. KAYAK data shows this is also the most popular route.

How much is a flight to Rock Springs?

A round-trip flight to Rock Springs costs $442 on average, based on data over the past 12 months on KAYAK. Round-trip fares from Grand Rapids average $225, while Las Vegas runs a bit higher at $298.

What is the cheapest day to fly to Rock Springs?

Tuesday is the cheapest day to fly to Rock Springs at $408 round-trip on average over the past 12 months on KAYAK. Sunday is the most expensive at $758.

What is the cheapest month to fly to Rock Springs?

  • January and November are the cheapest months to fly to Rock Springs with an average price of $328 round-trip.
  • March ($551) and June ($543) are the most expensive.
  • Based on KAYAK data over the past 12 months.

What is the cheapest time of day to fly to Rock Springs?

Evening flights to Rock Springs are the cheapest at $351 round-trip on average. Night flights are the most expensive at $478.

What is a good deal for flights to Rock Springs?

Flights under $328 are considered a good deal. 25% of KAYAK users found round-trip flights to Rock Springs at or below these prices, with the lowest fares from:

  • Grand Rapids $212
  • Denver $290
  • Las Vegas $298
.

Find deals

Key details for flights to Rock Springs

Low season

February

Cheapest flight

$197
Best time to beat the crowds with an average 22% drop in price.
Most popular time to fly with an average 23% increase in price.
Flight from Denver to Rock Springs

When to book flights to Rock Springs

Are your dates flexible? Find out the best times to travel to Rock Springs based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your questions about flights to Rock Springs, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • What is the difference between the most popular and the most frequent airline at Rock Springs?

    United Airlines operates the most flights from the United States to Rock Springs at 14 per week, and for this route United Airlines is also the airline most often selected by KAYAK users searching for flights from the United States to Rock Springs. The two are often different because flight volume reflects an airline's schedule, while popularity reflects traveler choice.

  • How long is a nonstop flight to Rock Springs?

    Nonstop flights to Rock Springs are available from Denver, with a flight time of about 1h 10m.

  • How many flights serve Rock Springs?

    Rock Springs receives 2 flights per day and 14 per week from across the world. Denver has the most flights to Rock Springs, with 14 weekly flights.

  • How do I know if a flight to Rock Springs is a good deal?

    A good deal on a flight to Rock Springs is around $328 round-trip. This fare is in the lowest 25% of round-trip prices searched on KAYAK, averaged across the cities most often searched as origins by KAYAK users.

  • Which airlines should I consider for flights to Rock Springs?

    United Airlines is the most popular airline with KAYAK users flying to Rock Springs, and has the best on-time record at the destination's main airport.

Your guide to booking Rock Springs flights

From booking to airport arrival, find tips to help you plan your flight with more confidence.
  • For flights to Rock Springs, recent KAYAK data shows that stronger deals tend to land around $328 round-trip. If you see a fare below that threshold, it's a strong deal – book before the price climbs back up.
  • If you can choose when to go, time your trip to Rock Springs around January. Round-trip fares historically average $328 that month – typically the cheapest month to travel based on the last 12 months.
  • Before you book:

    • Check the route's typical price range so you can spot a deal.
    • Confirm baggage fees and seat-selection costs on budget carriers.
    • Verify whether you need any travel documents beyond ID.
    • Pick a departure airport, since your nearest may not be the cheapest origin.
  • Shift your departure to afternoon to save up to $127 per round-trip. Afternoon flights to Rock Springs average $351 compared to $478 for evening flights. See the time-of-day chart above for the full breakdown.
  • Bag allowances vary by airline, fare type, cabin class and route. On flights to Rock Springs, some airlines may include bags at no extra cost. For example, United Airlines includes a cabin bag in Economy Class. Always check the fare details before booking, since bag policies can change by ticket type.

Reviews of the top airline flying to Rock Springs

 
Need help choosing which airline to fly with to Rock Springs? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 10157 reviews
6.7Food
7.3Comfort
7.7Boarding
8.1Crew
7.1Entertainment
Airline reviews

Airplane is not very clean, food quality and taste was not good. Lufthansa used to be good but nowadays went down. Overall experience is just okay, wouldn't fly again, prefer Turkish airlines.

4.0 OkayAnonymous, Sep 2026
Read more United Airlines reviews

Airplane is not very clean, food quality and taste was not good. Lufthansa used to be good but nowadays went down. Overall experience is just okay, wouldn't fly again, prefer Turkish airlines.

I missed the flight due to maintenance issues. This is the second flight I’ve missed in four days because United allows such little time between layovers. Very disappointing

My return flight to Honolulu (UA 1170) was on a 777-200. I’d forgotten the weird seating arrangement in first-class (2-2-2); I was in 1B, so I faced the passenger in 1C. Unfortunately, there was a problem with the flight computer, so we left LA an hour late (6:05pm). The meal I chose was Korean BBQ Glazed short rib. It was served with a nice salad and fried rice. This meal was better than breakfast on the outgoing leg. All in all, a decent flying experience. Ratings: 777: 3.75, food: 3.5, service: 5 (out of 5).

Food was not Good Nuts came very wet & not tasting Good Main course I asked for Steak they got me Chicken because they don’t have more !!!!

It cancelled and we were unable to catch our connecting international flights.

Terrible service - they don’t want to be there and bad food. Entertainment system in economy from the 2000s

I did bought anything… I don’t understand how this book appears to me . Ridiculous

Leaving at 7 when scheduled to leave at 4:20 - you tell me. Understood there was a ground stop. Then having to "reboot" the plane because of a lighting strike, also understood. But basically the flight was a "clusterf#$%".

No drink service but there was no N/A as an option to choose. Seats were extremely tight. I am under 5.5 and I bumped my knees have no idea how taller people could manage.

My flight from Honolulu (UA 1221) was on a very old 757, no video monitors anywhere. If you wanted to watch a movie, you needed to do so using the United app on one’s phone. WiFi was $8 for Mileage Plus members; I demurred, choosing to spend my time reading a novel using the Kindle app on my Samsung S26. The meal was okay … Breakfast on any domestic airline is so-so as a rule and this one was no exception. The best part of the meal was the fruit plate and the warm croissant. The highlight: The flight left on time and arrived early.

Everything you need to know for your flight to Rock Springs

Information on the airport you'll fly into in Rock Springs

Rock Springs (RKS)