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Flights from Helena to Sidney
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Flights from Helena to Sidney Starting at DKK 4,671

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

  • Round-trip
      • HLN14:05
        29h 35m
        2 stops
        SDY19:40
        Mon, Feb 24|Helena - Sidney|United Airlines
        SDY17:13
        44h 12m
        2 stops
        HLN13:25
        Sun, Mar 2|Sidney - Helena|Cape Air
        DKK 4,671DKK 6,754
        31% OFF
        31% OFF
        DKK 6,754DKK 4,671

        Choose United Airlines flights from Helena to Sidney. The one-way connecting flight with United Airlines departs from Helena Regional Airport on Mon, Feb 24-Sun, Mar 2, arriving at Sidney-Richland Municipal Airport. One-way Prices start from DKK 4,671 including taxes and charges.

      • HLN14:05
        23h 49m
        2 stops
        SDY13:54
        Thu, Feb 27|Helena - Sidney|United Airlines
        SDY09:25
        36h 1m
        2 stops
        HLN21:26
        Wed, Mar 5|Sidney - Helena|Cape Air
        DKK 4,674DKK 6,754
        31% OFF
        31% OFF
        DKK 6,754DKK 4,674

        Choose United Airlines flights from Helena to Sidney. The one-way connecting flight with United Airlines departs from Helena Regional Airport on Thu, Feb 27-Wed, Mar 5, arriving at Sidney-Richland Municipal Airport. One-way Prices start from DKK 4,674 including taxes and charges.

      • HLN06:45
        12h 55m
        2 stops
        SDY19:40
        Tue, Feb 25|Helena - Sidney|United Airlines
        SDY17:13
        44h 12m
        2 stops
        HLN13:25
        Mon, Mar 3|Sidney - Helena|Cape Air
        DKK 4,681DKK 6,754
        31% OFF
        31% OFF
        DKK 6,754DKK 4,681

        Choose United Airlines flights from Helena to Sidney. The one-way connecting flight with United Airlines departs from Helena Regional Airport on Tue, Feb 25-Mon, Mar 3, arriving at Sidney-Richland Municipal Airport. One-way Prices start from DKK 4,681 including taxes and charges.

      • HLN06:45
        12h 55m
        2 stops
        SDY19:40
        Wed, Feb 26|Helena - Sidney|United Airlines
        SDY14:20
        23h 5m
        2 stops
        HLN13:25
        Tue, Mar 4|Sidney - Helena|Cape Air
        DKK 4,681
        DKK 4,681

        Choose United Airlines flights from Helena to Sidney. The one-way connecting flight with United Airlines departs from Helena Regional Airport on Wed, Feb 26-Tue, Mar 4, arriving at Sidney-Richland Municipal Airport. One-way Prices start from DKK 4,681 including taxes and charges.

      • HLN06:45
        12h 55m
        2 stops
        SDY19:40
        Wed, Feb 19|Helena - Sidney|United Airlines
        SDY12:19
        25h 6m
        2 stops
        HLN13:25
        Tue, Feb 25|Sidney - Helena|Cape Air
        DKK 4,696
        DKK 4,696

        Choose United Airlines flights from Helena to Sidney. The one-way connecting flight with United Airlines departs from Helena Regional Airport on Wed, Feb 19-Tue, Feb 25, arriving at Sidney-Richland Municipal Airport. One-way Prices start from DKK 4,696 including taxes and charges.

      • HLN16:19
        16h 39m
        2 stops
        SDY08:58
        Wed, Feb 19|Helena - Sidney|Alaska Airlines
        SDY07:35
        32h 7m
        2 stops
        HLN15:42
        Tue, Feb 25|Sidney - Helena|Cape Air
        DKK 4,758
        DKK 4,758

        Choose Alaska Airlines flights from Helena to Sidney. The one-way connecting flight with Alaska Airlines departs from Helena Regional Airport on Wed, Feb 19-Tue, Feb 25, arriving at Sidney-Richland Municipal Airport. One-way Prices start from DKK 4,758 including taxes and charges.

      • HLN14:25
        47h 29m
        2 stops
        SDY13:54
        Mon, Mar 10|Helena - Sidney|United Airlines
        SDY17:13
        44h 27m
        2 stops
        HLN13:40
        Sun, Mar 16|Sidney - Helena|Cape Air
        DKK 4,920
        DKK 4,920

        Choose United Airlines flights from Helena to Sidney. The one-way connecting flight with United Airlines departs from Helena Regional Airport on Mon, Mar 10-Sun, Mar 16, arriving at Sidney-Richland Municipal Airport. One-way Prices start from DKK 4,920 including taxes and charges.

      • HLN06:30
        50h 28m
        2 stops
        SDY08:58
        Thu, Mar 13|Helena - Sidney|United Airlines
        SDY07:35
        13h 51m
        2 stops
        HLN21:26
        Wed, Mar 19|Sidney - Helena|Cape Air
        DKK 4,935
        DKK 4,935

        Choose United Airlines flights from Helena to Sidney. The one-way connecting flight with United Airlines departs from Helena Regional Airport on Thu, Mar 13-Wed, Mar 19, arriving at Sidney-Richland Municipal Airport. One-way Prices start from DKK 4,935 including taxes and charges.

      • HLN06:30
        13h 10m
        2 stops
        SDY19:40
        Tue, Mar 11|Helena - Sidney|United Airlines
        SDY12:19
        25h 21m
        2 stops
        HLN13:40
        Mon, Mar 17|Sidney - Helena|Cape Air
        DKK 4,944
        DKK 4,944

        Choose United Airlines flights from Helena to Sidney. The one-way connecting flight with United Airlines departs from Helena Regional Airport on Tue, Mar 11-Mon, Mar 17, arriving at Sidney-Richland Municipal Airport. One-way Prices start from DKK 4,944 including taxes and charges.

      • HLN06:30
        26h 28m
        2 stops
        SDY08:58
        Wed, Mar 12|Helena - Sidney|United Airlines
        SDY12:19
        33h 7m
        2 stops
        HLN21:26
        Tue, Mar 18|Sidney - Helena|Cape Air
        DKK 4,944
        DKK 4,944

        Choose United Airlines flights from Helena to Sidney. The one-way connecting flight with United Airlines departs from Helena Regional Airport on Wed, Mar 12-Tue, Mar 18, arriving at Sidney-Richland Municipal Airport. One-way Prices start from DKK 4,944 including taxes and charges.

      • HLN01:00 pm
        3h 5m
        Nonstop
        SDY02:00 pm
        Wed, Feb 26|Helena - 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.

Helena to Sidney flight time & flight schedules

Flight info.
Departure
Arrival
Weekly Schedule

  1. UA5514

    United Airlines

    06:40

    HLN

    2.0h

    08:43

    DEN

    SMTWTFS
    Search

  2. UA5498

    United Airlines

    15:34

    DEN

    1.7h

    17:16

    BIL

    SMTWTFS

  3. 9K1775

    Cape Air

    07:15

    BIL

    1.7h

    08:58

    SDY

    SMTWTFS

  4. UA5514

    United Airlines

    06:40

    HLN

    2.0h

    08:43

    DEN

    SMTWTFS
    Search

  5. UA1884

    United Airlines

    19:25

    DEN

    1.6h

    20:58

    BIL

    SMTWTFS

  6. 9K1775

    Cape Air

    07:15

    BIL

    1.7h

    08:58

    SDY

    SMTWTFS

  7. UA5514

    United Airlines

    06:40

    HLN

    2.0h

    08:43

    DEN

    SMTWTFS
    Search

  8. UA5498

    United Airlines

    15:34

    DEN

    1.7h

    17:16

    BIL

    SMTWTFS

  9. 9K1785

    Cape Air

    17:56

    BIL

    1.7h

    19:40

    SDY

    SMTWTFS

  10. UA5911

    United Airlines

    14:16

    HLN

    2.0h

    16:19

    DEN

    SMTWTFS
    Search

  11. UA703

    United Airlines

    11:45

    DEN

    1.6h

    13:23

    BIL

    SMTWTFS

  12. 9K1785

    Cape Air

    17:56

    BIL

    1.7h

    19:40

    SDY

    SMTWTFS

  13. UA5911

    United Airlines

    14:16

    HLN

    2.0h

    16:19

    DEN

    SMTWTFS
    Search

  14. UA5339

    United Airlines

    08:01

    DEN

    1.6h

    09:39

    BIL

    SMTWTFS

  15. 9K1785

    Cape Air

    17:56

    BIL

    1.7h

    19:40

    SDY

    SMTWTFS

  16. UA5911

    United Airlines

    14:16

    HLN

    2.0h

    16:19

    DEN

    SMTWTFS
    Search

  17. UA703

    United Airlines

    11:45

    DEN

    1.6h

    13:23

    BIL

    SMTWTFS

  18. 9K1789

    Cape Air

    15:00

    BIL

    1.8h

    16:48

    SDY

    SMTWTFS

  19. UA5911

    United Airlines

    14:16

    HLN

    2.0h

    16:19

    DEN

    SMTWTFS
    Search

  20. UA5339

    United Airlines

    08:01

    DEN

    1.6h

    09:39

    BIL

    SMTWTFS

  21. 9K1781

    Cape Air

    12:05

    BIL

    1.8h

    13:54

    SDY

    SMTWTFS

  22. UA5911

    United Airlines

    14:16

    HLN

    2.0h

    16:19

    DEN

    SMTWTFS
    Search

  23. UA1884

    United Airlines

    19:25

    DEN

    1.6h

    20:58

    BIL

    SMTWTFS

  24. 9K1777

    Cape Air

    10:05

    BIL

    1.8h

    11:54

    SDY

    SMTWTFS

  25. AS2222

    Alaska Airlines

    16:11

    HLN

    1.8h

    16:56

    SEA

    SMTWTFS
    Search

  26. AS2367

    Alaska Airlines

    21:15

    SEA

    1.7h

    23:59

    BIL

    SMTWTFS

  27. 9K1775

    Cape Air

    07:15

    BIL

    1.7h

    08:58

    SDY

    SMTWTFS

  28. AS2322

    Alaska Airlines

    17:00

    HLN

    1.7h

    17:41

    SEA

    ------S
    Search

  29. AS2360

    Alaska Airlines

    12:13

    SEA

    1.9h

    15:05

    BIL

    SMTWT-S

  30. 9K1789

    Cape Air

    15:00

    BIL

    1.8h

    16:48

    SDY

    SMTWTFS
Find more flights and airlines

Find the best time to fly from Helena 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.

FAQ

  • When are flight tickets from Helena (HLN) to Sidney (SDY) the cheapest?

    Airlines adjust prices for flights from Helena 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 Helena (HLN) to Sidney (SDY) cost?

    According to Trip.com's data, the lowest price is around DKK 5,600.

How to find a cheap flight from Helena 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 Helena 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 Information from Helena to Sidney

Off-season for travelSeptember
Peak season for travelJune
Flight distance601 km
Popular airlineUnited Airlines

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