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Flights from Sidney to Helena
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Flights from Sidney to Helena Starting at £481

Discover our range of affordable one-way and round-trip flights from Sidney to Helena and kick-start your next adventure today!

  • Round-trip
      • SDY09:25
        30h 17m
        2 stops
        HLN15:42
        Tue, Feb 18|Sidney - Helena|Cape Air
        HLN16:19
        27h 21m
        2 stops
        SDY19:40
        Mon, Feb 24|Helena - Sidney|Alaska Airlines
        £481£863
        44% OFF
        44% OFF
        £863£481

        Choose Cape Air flights from Sidney to Helena. The one-way connecting flight with Cape Air departs from Sidney-Richland Municipal Airport on Tue, Feb 18-Mon, Feb 24, arriving at Helena Regional Airport. One-way Prices start from £481 including taxes and charges.

      • SDY17:13
        51h 59m
        2 stops
        HLN21:12
        Fri, Feb 21|Sidney - Helena|Cape Air
        HLN14:05
        23h 49m
        2 stops
        SDY13:54
        Thu, Feb 27|Helena - Sidney|United Airlines
        £536£863
        38% OFF
        38% OFF
        £863£536

        Choose Cape Air flights from Sidney to Helena. The one-way connecting flight with Cape Air departs from Sidney-Richland Municipal Airport on Fri, Feb 21-Thu, Feb 27, arriving at Helena Regional Airport. One-way Prices start from £536 including taxes and charges.

      • SDY07:35
        37h 37m
        2 stops
        HLN21:12
        Wed, Feb 26|Sidney - Helena|Cape Air
        HLN06:30
        37h 10m
        2 stops
        SDY19:40
        Tue, Mar 4|Helena - Sidney|United Airlines
        £602£863
        30% OFF
        30% OFF
        £863£602

        Choose Cape Air flights from Sidney to Helena. The one-way connecting flight with Cape Air departs from Sidney-Richland Municipal Airport on Wed, Feb 26-Tue, Mar 4, arriving at Helena Regional Airport. One-way Prices start from £602 including taxes and charges.

      • SDY07:35
        29h 50m
        2 stops
        HLN13:25
        Tue, Feb 25|Sidney - Helena|Cape Air
        HLN06:30
        31h 24m
        2 stops
        SDY13:54
        Mon, Mar 3|Helena - Sidney|United Airlines
        £636
        £636

        Choose Cape Air flights from Sidney to Helena. The one-way connecting flight with Cape Air departs from Sidney-Richland Municipal Airport on Tue, Feb 25-Mon, Mar 3, arriving at Helena Regional Airport. One-way Prices start from £636 including taxes and charges.

      • SDY14:20
        30h 52m
        2 stops
        HLN21:12
        Mon, Feb 24|Sidney - Helena|Cape Air
        HLN06:30
        37h 10m
        2 stops
        SDY19:40
        Sun, Mar 2|Helena - Sidney|United Airlines
        £639
        £639

        Choose Cape Air flights from Sidney to Helena. The one-way connecting flight with Cape Air departs from Sidney-Richland Municipal Airport on Mon, Feb 24-Sun, Mar 2, arriving at Helena Regional Airport. One-way Prices start from £639 including taxes and charges.

      • SDY12:19
        25h 6m
        2 stops
        HLN13:25
        Thu, Feb 27|Sidney - Helena|Cape Air
        HLN06:30
        50h 28m
        2 stops
        SDY08:58
        Wed, Mar 5|Helena - Sidney|United Airlines
        £760
        £760

        Choose Cape Air flights from Sidney to Helena. The one-way connecting flight with Cape Air departs from Sidney-Richland Municipal Airport on Thu, Feb 27-Wed, Mar 5, arriving at Helena Regional Airport. One-way Prices start from £760 including taxes and charges.

      • SDY01:00 pm
        3h 5m
        Nonstop
        HLN02:00 pm
        Sun, Feb 23|Sidney - Helena|Cape Air
        Find More Flights
        Find More Flights

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

Sidney to Helena flight time & flight schedules

Flight info.
Departure
Arrival
Weekly Schedule

  1. 9K1778

    Cape Air

    07:35

    SDY

    2.0h

    09:34

    BIL

    SMTWTFS
    Search

  2. UA4758

    United Airlines

    17:51

    BIL

    1.8h

    19:40

    DEN

    SMTWTFS

  3. UA4705

    United Airlines

    19:10

    DEN

    2.1h

    21:15

    HLN

    SMTWTFS

  4. 9K1778

    Cape Air

    07:35

    SDY

    2.0h

    09:34

    BIL

    SMTWTFS
    Search

  5. UA478

    United Airlines

    14:40

    BIL

    1.7h

    16:22

    DEN

    SMTWTFS

  6. UA5388

    United Airlines

    11:30

    DEN

    2.0h

    13:31

    HLN

    SMTWTFS

  7. 9K1780

    Cape Air

    09:25

    SDY

    1.9h

    11:20

    BIL

    SMTWTFS
    Search

  8. AS2360

    Alaska Airlines

    13:22

    BIL

    2.1h

    14:31

    SEA

    SMTWT-S

  9. AS2222

    Alaska Airlines

    13:00

    SEA

    1.5h

    15:31

    HLN

    SMTWTFS

  10. 9K1784

    Cape Air

    12:19

    SDY

    1.9h

    14:14

    BIL

    SMTWTFS
    Search

  11. UA478

    United Airlines

    14:40

    BIL

    1.7h

    16:22

    DEN

    SMTWTFS

  12. UA5388

    United Airlines

    11:30

    DEN

    2.0h

    13:31

    HLN

    SMTWTFS

  13. 9K1788

    Cape Air

    14:20

    SDY

    1.9h

    16:12

    BIL

    SMTWTFS
    Search

  14. UA4758

    United Airlines

    17:51

    BIL

    1.8h

    19:40

    DEN

    SMTWTFS

  15. UA4705

    United Airlines

    19:10

    DEN

    2.1h

    21:15

    HLN

    SMTWTFS

  16. 9K1776

    Cape Air

    17:13

    SDY

    1.9h

    19:05

    BIL

    SMTWTFS
    Search

  17. UA4758

    United Airlines

    17:51

    BIL

    1.8h

    19:40

    DEN

    SMTWTFS

  18. UA4705

    United Airlines

    19:10

    DEN

    2.1h

    21:15

    HLN

    SMTWTFS
Find more flights and airlines

Find the best time to fly from Sidney to Helena

Price trend charts are a great way of tracking how much your flights cost in the lead up to departure and can help you choose when to book your tickets. See how prices to Helena from Sidney have changed and are set to move below.

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

FAQ

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

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

  • How much are flights from Sidney (SDY) to Helena (HLN) cost?

    According to Trip.com's data, the lowest price is around £563.

  • How many airports in Helena (HLN)?

    There are 1 airport(s) in Helena (HLN): Helena Regional Airport.

How to find a cheap flight from Sidney to Helena

Understanding the common pitfalls when booking your flight tickets can help you save massively when it comes time to fly. We’ve listed our six essential steps to keep in mind when you’re booking flight tickets to help you find the best price.
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 Sidney to Helena

Off-season travel monthAugust
Peak season for travelOctober
Flight distance601km
Popular airlineCape Air

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