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Cheap flight deals from Sidney to Helena Starting at $716

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

  • Round-trip
      • SDY17:13
        21h 36m
        2 stops
        HLN14:49
        Tue, Dec 31|Sidney - Helena|Cape Air
        HLN16:41
        16h 17m
        2 stops
        SDY08:58
        Mon, Jan 6|Helena - Sidney|Alaska Airlines
        $716$971
        26% OFF
        26% OFF
        $971$716

        Choose Cape Air flights from Sidney to Helena. The one-way connecting flight with Cape Air departs from Sidney-Richland Municipal Airport on Tue, Dec 31-Mon, Jan 6, arriving at Helena Regional Airport. One-way Prices start from $716 including taxes and charges.

      • SDY17:13
        21h 55m
        2 stops
        HLN15:08
        Thu, Dec 5|Sidney - Helena|Cape Air
        HLN16:07
        16h 51m
        2 stops
        SDY08:58
        Wed, Dec 11|Helena - Sidney|Alaska Airlines
        $737$971
        24% OFF
        24% OFF
        $971$737

        Choose Cape Air flights from Sidney to Helena. The one-way connecting flight with Cape Air departs from Sidney-Richland Municipal Airport on Thu, Dec 5-Wed, Dec 11, arriving at Helena Regional Airport. One-way Prices start from $737 including taxes and charges.

      • SDY09:25
        36h 6m
        2 stops
        HLN21:31
        Wed, Dec 25|Sidney - Helena|Cape Air
        HLN14:25
        23h 29m
        2 stops
        SDY13:54
        Tue, Dec 31|Helena - Sidney|United Airlines
        $821$971
        15% OFF
        15% OFF
        $971$821

        Choose Cape Air flights from Sidney to Helena. The one-way connecting flight with Cape Air departs from Sidney-Richland Municipal Airport on Wed, Dec 25-Tue, Dec 31, arriving at Helena Regional Airport. One-way Prices start from $821 including taxes and charges.

      • SDY07:35
        37h 56m
        2 stops
        HLN21:31
        Sun, Dec 29|Sidney - Helena|Cape Air
        HLN14:25
        42h 33m
        2 stops
        SDY08:58
        Sat, Jan 4|Helena - Sidney|United Airlines
        $896
        $896

        Choose Cape Air flights from Sidney to Helena. The one-way connecting flight with Cape Air departs from Sidney-Richland Municipal Airport on Sun, Dec 29-Sat, Jan 4, arriving at Helena Regional Airport. One-way Prices start from $896 including taxes and charges.

      • SDY17:13
        45h 36m
        2 stops
        HLN14:49
        Mon, Dec 30|Sidney - Helena|Cape Air
        HLN15:29
        41h 29m
        2 stops
        SDY08:58
        Sun, Jan 5|Helena - Sidney|Alaska Airlines
        $903
        $903

        Choose Cape Air flights from Sidney to Helena. The one-way connecting flight with Cape Air departs from Sidney-Richland Municipal Airport on Mon, Dec 30-Sun, Jan 5, arriving at Helena Regional Airport. One-way Prices start from $903 including taxes and charges.

      • SDY13:00
        3h 5m
        Nonstop
        HLN14:00
        Wed, Dec 11|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.

When is the cheapest time to fly from Sidney to Helena?

These price trend charts carefully monitor and predict how flight prices from Sidney to Helena 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.

Alternative Cheap Routes from Sidney to Helena

There are various non-direct routes from Sidney to Helena which could be cheaper and faster! Check out these alternative options to see if they could work for your trip.

  • Cheapest
    Cape Air
    SDY
    17:13
    21h 36m
    4 transfer
    HLN
    14:49
    Sidney-Richland Municipal Airport - Helena Regional Airport
    Tue, Dec 31Cape Air
    $716
  • Cape Air
    SDY
    17:13
    21h 36m
    4 transfer
    HLN
    14:49
    Sidney-Richland Municipal Airport - Helena Regional Airport
    Tue, Dec 31Cape Air
    $716
    Find More Flights

Frequently Asked Questions

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

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

    According to Trip.com's data, the lowest price is around $708.

How to find a cheap flight from Sidney to Helena

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 | Sidney to Helena

Off-season for travelAugust
Peak season for travelOctober
Flight distance601 km
Popular airlineCape Air

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