App
Customer Support
EUR
Find Bookings
Worldwide Coverage
Worldwide Coverage
Flights to over 5,000 cities
One-stop Service Guarantee
One-stop Service Guarantee
Price guaranteed upon confirmed payment, booking guaranteed once tickets issued
Secure Payment
Secure Payment
Convenient & reliable booking and payment system

Cheap flight deals from Rapid City to Sidney Starting at €344

We've found these cheap flights for you. You can book one-way or round-trip flight tickets.

  • Round-trip
      • RAP08:21 am
        8h 27m
        2 stops
        SDY04:48 pm
        Tue, Feb 25|Rapid City - Sidney|United Airlines
        SDY12:19 pm
        9h 56m
        2 stops
        RAP10:15 pm
        Mon, Mar 3|Sidney - Rapid City|Cape Air
        €344€721
        52% OFF
        52% OFF
        €721€344

        Choose United Airlines flights from Rapid City to Sidney. The one-way connecting flight with United Airlines departs from Rapid City Regional Airport on Tue, Feb 25-Mon, Mar 3, arriving at Sidney-Richland Municipal Airport. One-way Prices start from €344 including taxes and charges.

      • RAP08:21 am
        8h 27m
        2 stops
        SDY04:48 pm
        Wed, Feb 26|Rapid City - Sidney|United Airlines
        SDY09:25 am
        12h 50m
        2 stops
        RAP10:15 pm
        Tue, Mar 4|Sidney - Rapid City|Cape Air
        €344€721
        52% OFF
        52% OFF
        €721€344

        Choose United Airlines flights from Rapid City to Sidney. The one-way connecting flight with United Airlines departs from Rapid City Regional Airport on Wed, Feb 26-Tue, Mar 4, arriving at Sidney-Richland Municipal Airport. One-way Prices start from €344 including taxes and charges.

      • RAP05:15 am
        8h 39m
        2 stops
        SDY01:54 pm
        Thu, Feb 27|Rapid City - Sidney|United Airlines
        SDY05:13 pm
        27h 43m
        2 stops
        RAP08:56 pm
        Mon, Mar 3|Sidney - Rapid City|Cape Air
        €347€721
        52% OFF
        52% OFF
        €721€347

        Choose United Airlines flights from Rapid City to Sidney. The one-way connecting flight with United Airlines departs from Rapid City Regional Airport on Thu, Feb 27-Mon, Mar 3, arriving at Sidney-Richland Municipal Airport. One-way Prices start from €347 including taxes and charges.

      • RAP03:40 pm
        22h 14m
        2 stops
        SDY01:54 pm
        Mon, Mar 3|Rapid City - Sidney|United Airlines
        SDY05:13 pm
        27h 44m
        2 stops
        RAP08:57 pm
        Fri, Mar 7|Sidney - Rapid City|Cape Air
        €351
        €351

        Choose United Airlines flights from Rapid City to Sidney. The one-way connecting flight with United Airlines departs from Rapid City Regional Airport on Mon, Mar 3-Fri, Mar 7, arriving at Sidney-Richland Municipal Airport. One-way Prices start from €351 including taxes and charges.

      • RAP08:21 am
        8h 27m
        2 stops
        SDY04:48 pm
        Sat, Mar 1|Rapid City - Sidney|United Airlines
        SDY02:20 pm
        7h 55m
        2 stops
        RAP10:15 pm
        Wed, Mar 5|Sidney - Rapid City|Cape Air
        €355
        €355

        Choose United Airlines flights from Rapid City to Sidney. The one-way connecting flight with United Airlines departs from Rapid City Regional Airport on Sat, Mar 1-Wed, Mar 5, arriving at Sidney-Richland Municipal Airport. One-way Prices start from €355 including taxes and charges.

      • RAP05:15 am
        8h 39m
        2 stops
        SDY01:54 pm
        Wed, Mar 12|Rapid City - Sidney|United Airlines
        SDY05:13 pm
        27h 44m
        2 stops
        RAP08:57 pm
        Tue, Mar 18|Sidney - Rapid City|Cape Air
        €373
        €373

        Choose United Airlines flights from Rapid City to Sidney. The one-way connecting flight with United Airlines departs from Rapid City Regional Airport on Wed, Mar 12-Tue, Mar 18, arriving at Sidney-Richland Municipal Airport. One-way Prices start from €373 including taxes and charges.

      • RAP08:20 am
        24h 38m
        2 stops
        SDY08:58 am
        Thu, Mar 13|Rapid City - Sidney|United Airlines
        SDY05:13 pm
        27h 44m
        2 stops
        RAP08:57 pm
        Wed, Mar 19|Sidney - Rapid City|Cape Air
        €438
        €438

        Choose United Airlines flights from Rapid City to Sidney. The one-way connecting flight with United Airlines departs from Rapid City Regional Airport on Thu, Mar 13-Wed, Mar 19, arriving at Sidney-Richland Municipal Airport. One-way Prices start from €438 including taxes and charges.

      • RAP05:15 am
        8h 39m
        2 stops
        SDY01:54 pm
        Sat, Mar 15|Rapid City - Sidney|United Airlines
        SDY12:19 pm
        22h 47m
        2 stops
        RAP11:06 am
        Fri, Mar 21|Sidney - Rapid City|Cape Air
        €439
        €439

        Choose United Airlines flights from Rapid City to Sidney. The one-way connecting flight with United Airlines departs from Rapid City Regional Airport on Sat, Mar 15-Fri, Mar 21, arriving at Sidney-Richland Municipal Airport. One-way Prices start from €439 including taxes and charges.

      • RAP03:40 pm
        22h 14m
        2 stops
        SDY01:54 pm
        Mon, Feb 24|Rapid City - Sidney|United Airlines
        SDY02:20 pm
        7h 55m
        2 stops
        RAP10:15 pm
        Sun, Mar 2|Sidney - Rapid City|Cape Air
        €471
        €471

        Choose United Airlines flights from Rapid City to Sidney. The one-way connecting flight with United Airlines departs from Rapid City Regional Airport on Mon, Feb 24-Sun, Mar 2, arriving at Sidney-Richland Municipal Airport. One-way Prices start from €471 including taxes and charges.

      • RAP08:20 am
        8h 28m
        2 stops
        SDY04:48 pm
        Tue, Mar 11|Rapid City - Sidney|United Airlines
        SDY05:13 pm
        27h 44m
        2 stops
        RAP08:57 pm
        Mon, Mar 17|Sidney - Rapid City|Cape Air
        €476
        €476

        Choose United Airlines flights from Rapid City to Sidney. The one-way connecting flight with United Airlines departs from Rapid City Regional Airport on Tue, Mar 11-Mon, Mar 17, arriving at Sidney-Richland Municipal Airport. One-way Prices start from €476 including taxes and charges.

      • RAP01:00 pm
        3h 5m
        Nonstop
        SDY02:00 pm
        Sat, Mar 1|Rapid City - Sidney|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.

Rapid City to Sidney Flight Time

Flight info.
Departure
Arrival
Weekly Schedule

  1. UA5545

    United Airlines

    03:21 pm

    RAP

    1.6h

    04:55 pm

    DEN

    SMTWTFS
    Search

  2. UA1884

    United Airlines

    07:18 pm

    DEN

    1.6h

    08:51 pm

    BIL

    SMTWTFS

  3. 9K1789

    Cape Air

    03:03 pm

    BIL

    1.7h

    04:43 pm

    SDY

    SMTWTFS

  4. UA5545

    United Airlines

    03:21 pm

    RAP

    1.6h

    04:55 pm

    DEN

    SMTWTFS
    Search

  5. UA1884

    United Airlines

    07:18 pm

    DEN

    1.6h

    08:51 pm

    BIL

    SMTWTFS

  6. 9K1781

    Cape Air

    12:05 pm

    BIL

    1.8h

    01:50 pm

    SDY

    SMTWTFS

  7. DL4834

    Delta Air Lines

    04:19 pm

    RAP

    1.8h

    07:05 pm

    MSP

    SMTWTFS
    Search

  8. DL2941

    Delta Air Lines

    09:25 pm

    MSP

    2.4h

    10:50 pm

    BIL

    SMTWTFS

  9. 9K1775

    Cape Air

    07:15 am

    BIL

    1.8h

    09:00 am

    SDY

    SMTWTFS

  10. AA3445

    American Airlines

    05:12 am

    RAP

    2.7h

    08:54 am

    DFW

    SMTWTFS
    Search

  11. AA4095

    American Airlines

    11:28 am

    DFW

    3.0h

    01:30 pm

    BIL

    SMTWTFS

  12. 9K1789

    Cape Air

    03:03 pm

    BIL

    1.7h

    04:43 pm

    SDY

    SMTWTFS

  13. UA5576

    United Airlines

    05:30 am

    RAP

    1.3h

    06:50 am

    DEN

    S--WTFS
    Search

  14. UA5339

    United Airlines

    08:18 am

    DEN

    1.6h

    09:51 am

    BIL

    SMTWTFS

  15. 9K1781

    Cape Air

    12:05 pm

    BIL

    1.8h

    01:50 pm

    SDY

    SMTWTFS

  16. UA5611

    United Airlines

    05:48 pm

    RAP

    1.5h

    07:20 pm

    DEN

    SMTWTFS
    Search

  17. UA5498

    United Airlines

    03:40 pm

    DEN

    1.6h

    05:19 pm

    BIL

    SMTWTFS

  18. 9K1785

    Cape Air

    06:00 pm

    BIL

    1.7h

    07:40 pm

    SDY

    SMTWTFS

  19. UA2307

    United Airlines

    08:21 am

    RAP

    1.6h

    10:00 am

    DEN

    SMTWTFS
    Search

  20. UA703

    United Airlines

    11:40 am

    DEN

    1.6h

    01:13 pm

    BIL

    SMTWTFS

  21. 9K1785

    Cape Air

    06:00 pm

    BIL

    1.7h

    07:40 pm

    SDY

    SMTWTFS

  22. UA2307

    United Airlines

    08:21 am

    RAP

    1.6h

    10:00 am

    DEN

    SMTWTFS
    Search

  23. UA703

    United Airlines

    11:40 am

    DEN

    1.6h

    01:13 pm

    BIL

    SMTWTFS

  24. 9K1789

    Cape Air

    03:03 pm

    BIL

    1.7h

    04:43 pm

    SDY

    SMTWTFS

  25. AA3649

    American Airlines

    12:24 pm

    RAP

    2.4h

    03:49 pm

    DFW

    SMTWTFS
    Search

  26. AA3487

    American Airlines

    07:10 pm

    DFW

    3.1h

    09:16 pm

    BIL

    SMTWTFS

  27. 9K1777

    Cape Air

    10:05 am

    BIL

    1.8h

    11:50 am

    SDY

    SMTWTFS

  28. AA3649

    American Airlines

    12:24 pm

    RAP

    2.4h

    03:49 pm

    DFW

    SMTWTFS
    Search

  29. AA3487

    American Airlines

    07:10 pm

    DFW

    3.1h

    09:16 pm

    BIL

    SMTWTFS

  30. 9K1775

    Cape Air

    07:15 am

    BIL

    1.8h

    09:00 am

    SDY

    SMTWTFS
Find more flights and airlines

When is the cheapest time to fly from Rapid City to Sidney?

We monitor flight fares to help you find the best deals effortlessly

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 Rapid City (RAP) to Sidney (SDY) the cheapest?

    Airlines adjust prices for flights from Rapid City to Sidney based on the departure date and time of your selection. By analyzing data from all airlines, we've discovered that on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays.

  • How much do flights from Rapid City (RAP) to Sidney (SDY) cost?

    According to Trip.com's data, the lowest price is around €825.

How to find a cheap flight from Rapid City to Sidney

Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from Rapid City to Sidney. Book your flights at the right time and save more.
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 | Rapid City to Sidney

Flight distance417.79 km
Popular airlineUnited Airlines

Contact Us

About

Other Services

Payment Methods
Our Partners
Copyright © 2025 Trip.com Travel Singapore Pte. Ltd. All rights reserved
Site Operator: Trip.com Travel Singapore Pte. Ltd.