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Cheap flight deals from Rock Springs to St. Louis Starting at €309

For as little as €309, you can take your next adventure to St. Louis without breaking the bank. Choose between one-way and return tickets from Rock Springs below.

  • Round-trip
      • RKS14:22
        5h 22m
        1 stop
        STL20:44
        Tue, Feb 25|Rock Springs - St. Louis|United Airlines
        STL13:39
        9h 21m
        1 stop
        RKS22:00
        Mon, Mar 3|St. Louis - Rock Springs|United Airlines
        €309€564
        45% OFF
        45% OFF
        €564€309

        Choose United Airlines flights from Rock Springs to St. Louis. The one-way connecting flight with United Airlines departs from Rock Springs-Sweetwater County Airport on Tue, Feb 25-Mon, Mar 3, arriving at St. Louis Lambert International Airport. One-way Prices start from €309 including taxes and charges.

      • RKS14:22
        5h 22m
        1 stop
        STL20:44
        Wed, Feb 26|Rock Springs - St. Louis|United Airlines
        STL13:39
        9h 21m
        1 stop
        RKS22:00
        Tue, Mar 4|St. Louis - Rock Springs|United Airlines
        €309€564
        45% OFF
        45% OFF
        €564€309

        Choose United Airlines flights from Rock Springs to St. Louis. The one-way connecting flight with United Airlines departs from Rock Springs-Sweetwater County Airport on Wed, Feb 26-Tue, Mar 4, arriving at St. Louis Lambert International Airport. One-way Prices start from €309 including taxes and charges.

      • RKS14:22
        5h 22m
        1 stop
        STL20:44
        Thu, Feb 20|Rock Springs - St. Louis|United Airlines
        STL13:39
        9h 21m
        1 stop
        RKS22:00
        Wed, Feb 26|St. Louis - Rock Springs|United Airlines
        €309€564
        45% OFF
        45% OFF
        €564€309

        Choose United Airlines flights from Rock Springs to St. Louis. The one-way connecting flight with United Airlines departs from Rock Springs-Sweetwater County Airport on Thu, Feb 20-Wed, Feb 26, arriving at St. Louis Lambert International Airport. One-way Prices start from €309 including taxes and charges.

      • RKS14:22
        5h 22m
        1 stop
        STL20:44
        Wed, Feb 19|Rock Springs - St. Louis|United Airlines
        STL13:39
        9h 21m
        1 stop
        RKS22:00
        Tue, Feb 25|St. Louis - Rock Springs|United Airlines
        €310
        €310

        Choose United Airlines flights from Rock Springs to St. Louis. The one-way connecting flight with United Airlines departs from Rock Springs-Sweetwater County Airport on Wed, Feb 19-Tue, Feb 25, arriving at St. Louis Lambert International Airport. One-way Prices start from €310 including taxes and charges.

      • RKS05:20
        9h 20m
        2 stops
        STL15:40
        Sun, Feb 16|Rock Springs - St. Louis|United Airlines
        STL16:39
        6h 21m
        1 stop
        RKS22:00
        Sat, Feb 22|St. Louis - Rock Springs|United Airlines
        €315
        €315

        Choose United Airlines flights from Rock Springs to St. Louis. The one-way connecting flight with United Airlines departs from Rock Springs-Sweetwater County Airport on Sun, Feb 16-Sat, Feb 22, arriving at St. Louis Lambert International Airport. One-way Prices start from €315 including taxes and charges.

      • RKS14:22
        5h 22m
        1 stop
        STL20:44
        Thu, Feb 13|Rock Springs - St. Louis|United Airlines
        STL13:39
        9h 21m
        1 stop
        RKS22:00
        Wed, Feb 19|St. Louis - Rock Springs|United Airlines
        €361
        €361

        Choose United Airlines flights from Rock Springs to St. Louis. The one-way connecting flight with United Airlines departs from Rock Springs-Sweetwater County Airport on Thu, Feb 13-Wed, Feb 19, arriving at St. Louis Lambert International Airport. One-way Prices start from €361 including taxes and charges.

      • RKS14:22
        5h 22m
        1 stop
        STL20:44
        Fri, Feb 21|Rock Springs - St. Louis|United Airlines
        STL13:39
        9h 21m
        1 stop
        RKS22:00
        Thu, Feb 27|St. Louis - Rock Springs|United Airlines
        €361
        €361

        Choose United Airlines flights from Rock Springs to St. Louis. The one-way connecting flight with United Airlines departs from Rock Springs-Sweetwater County Airport on Fri, Feb 21-Thu, Feb 27, arriving at St. Louis Lambert International Airport. One-way Prices start from €361 including taxes and charges.

      • RKS14:22
        5h 22m
        1 stop
        STL20:44
        Fri, Feb 14|Rock Springs - St. Louis|United Airlines
        STL13:39
        9h 21m
        1 stop
        RKS22:00
        Thu, Feb 20|St. Louis - Rock Springs|United Airlines
        €366
        €366

        Choose United Airlines flights from Rock Springs to St. Louis. The one-way connecting flight with United Airlines departs from Rock Springs-Sweetwater County Airport on Fri, Feb 14-Thu, Feb 20, arriving at St. Louis Lambert International Airport. One-way Prices start from €366 including taxes and charges.

      • RKS14:22
        21h 21m
        1 stop
        STL12:43
        Tue, Feb 18|Rock Springs - St. Louis|United Airlines
        STL13:39
        9h 21m
        1 stop
        RKS22:00
        Mon, Feb 24|St. Louis - Rock Springs|United Airlines
        €376
        €376

        Choose United Airlines flights from Rock Springs to St. Louis. The one-way connecting flight with United Airlines departs from Rock Springs-Sweetwater County Airport on Tue, Feb 18-Mon, Feb 24, arriving at St. Louis Lambert International Airport. One-way Prices start from €376 including taxes and charges.

      • RKS05:20
        9h 20m
        2 stops
        STL15:40
        Thu, Feb 27|Rock Springs - St. Louis|United Airlines
        STL16:39
        6h 21m
        1 stop
        RKS22:00
        Wed, Mar 5|St. Louis - Rock Springs|United Airlines
        €407
        €407

        Choose United Airlines flights from Rock Springs to St. Louis. The one-way connecting flight with United Airlines departs from Rock Springs-Sweetwater County Airport on Thu, Feb 27-Wed, Mar 5, arriving at St. Louis Lambert International Airport. One-way Prices start from €407 including taxes and charges.

      • RKS01:00 pm
        3h 5m
        Nonstop
        STL02:00 pm
        Thu, Feb 20|Rock Springs - St. Louis|United Airlines
        Find More Flights
        Find More Flights

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

Rock Springs to St. Louis flight time & flight schedules

Flight info.
Departure
Arrival
Weekly Schedule

  1. UA5093

    United Airlines

    05:15

    RKS

    1.4h

    06:37

    DEN

    SMTWTFS
    Search

  2. UA1811

    United Airlines

    07:47

    DEN

    2.5h

    11:20

    ORD

    SMTWTFS

  3. UA1693

    United Airlines

    14:20

    ORD

    1.3h

    15:40

    STL

    SMTWTFS

  4. UA5063

    United Airlines

    14:10

    RKS

    1.4h

    15:32

    DEN

    SMTWTFS
    Search

  5. UA1315

    United Airlines

    13:30

    DEN

    2.0h

    16:33

    STL

    SMTWTFS

  6. UA5063

    United Airlines

    14:10

    RKS

    1.4h

    15:32

    DEN

    SMTWTFS
    Search

  7. UA652

    United Airlines

    09:40

    DEN

    2.1h

    12:45

    STL

    SMTWTFS

  8. UA5063

    United Airlines

    14:10

    RKS

    1.4h

    15:32

    DEN

    SMTWTFS
    Search

  9. UA1248

    United Airlines

    17:40

    DEN

    2.1h

    20:44

    STL

    SMTWTFS
Find more flights and airlines

When is the cheapest time to fly from Rock Springs to St. Louis?

These price trend charts carefully monitor and predict how flight prices from Rock Springs to St. Louis will change. Keep a close eye on them to understand when the best time to buy your tickets is.

Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

Frequently Asked Questions

  • When are flight tickets from Rock Springs (RKS) to St. Louis (STL) the cheapest?

    Airlines adjust prices for flights from Rock Springs to St. Louis based on the date and time of your booking. By analyzing data from all airlines, on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays.

  • How much do flights from Rock Springs (RKS) to St. Louis (STL) cost?

    According to Trip.com's data, the lowest price is around €437.

  • What is the transportation method from the main airport to downtown in St. Louis?

    • The distance from St. Louis Lambert International Airport to downtown is about 20 km, by taxi about 40 minutes.

  • How many airports are there in St. Louis (STL)?

    There are 1 airport(s) near St. Louis (STL): St. Louis Lambert International Airport.

How to find a cheap flight from Rock Springs to St. Louis

If you leave it until the last minute and forget to check some of the key information when booking tickets, prices can often end up skyrocketing. Below, you can find our top tips for getting the best value flights – from changing dates to chasing deals, there are plenty ways to keep your next trip affordable.
1
Book Early
Once prices are gone, they're gone. Lock in deals while you can!
2
Compare Flight Prices
Compare prices on travel agency and airline websites.
3
Look Out for Deals
Check airline and travel agency websites for latest flight deals
4
Check One-way Fares
Buying two cheap one-way flights can sometimes be a better deal than a round-trip.
5
Try Different Dates
Flying during the week, early in the morning, or late at night can help save money.
6
Use the Trip.com App
Save up to £10 per person when booking your flights on Trip.com

Flight Info | Rock Springs to St. Louis

Off-season for travelSeptember
Peak season for travelSeptember
Flight distance1,636.16 km
Popular airlineUnited Airlines

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