Cheap flights to Lewis and Clark County

View €279 flight on Sun, 1 Nov 2026Opens in a new window

Popular airlines to Lewis and Clark County

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  • Delta

  • United

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Cheap round-trip flights to Lewis and Clark County

Prices were available within the past 7 days and start at €279 for one-way flights and €533 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sun, 1 Nov - Tue, 3 Nov
IND
Indianapolis
HLN
Helena
€533 Return, found 20 hours ago
€533
Return
found 20 hours ago
Select Delta flight, departing Sun, 1 Nov from Indianapolis to Helena, returning Tue, 3 Nov, priced at €533 found 20 hours ago
Delta
Sun, 1 Nov - Tue, 3 Nov
IND
Indianapolis
HLN
Helena
€538 Return, found 20 hours ago
€538
Return
found 20 hours ago
Select Delta flight, departing Sun, 1 Nov from Indianapolis to Helena, returning Tue, 3 Nov, priced at €538 found 20 hours ago
Delta
Sun, 1 Nov - Tue, 3 Nov
IND
Indianapolis
HLN
Helena
€569 Return, found 20 hours ago
€569
Return
found 20 hours ago
Select Delta flight, departing Sun, 1 Nov from Indianapolis to Helena, returning Tue, 3 Nov, priced at €569 found 20 hours ago
Delta
Sun, 1 Nov - Tue, 3 Nov
IND
Indianapolis
HLN
Helena
€601 Return, found 20 hours ago
€601
Return
found 20 hours ago
Select Delta flight, departing Sun, 1 Nov from Indianapolis to Helena, returning Tue, 3 Nov, priced at €601 found 20 hours ago
Delta
Sun, 1 Nov - Tue, 3 Nov
IND
Indianapolis
HLN
Helena
€602 Return, found 20 hours ago
€602
Return
found 20 hours ago
Select Delta flight, departing Sun, 1 Nov from Indianapolis to Helena, returning Tue, 3 Nov, priced at €602 found 20 hours ago
Delta
Sun, 1 Nov - Tue, 3 Nov
IND
Indianapolis
HLN
Helena
€605 Return, found 20 hours ago
€605
Return
found 20 hours ago
Select Delta flight, departing Sun, 1 Nov from Indianapolis to Helena, returning Tue, 3 Nov, priced at €605 found 20 hours ago
Delta
Sun, 1 Nov - Tue, 3 Nov
IND
Indianapolis
HLN
Helena
€606 Return, found 20 hours ago
€606
Return
found 20 hours ago
Select Delta flight, departing Sun, 1 Nov from Indianapolis to Helena, returning Tue, 3 Nov, priced at €606 found 20 hours ago
Delta
Sun, 1 Nov - Tue, 3 Nov
IND
Indianapolis
HLN
Helena
€639 Return, found 20 hours ago
€639
Return
found 20 hours ago
Select Delta flight, departing Sun, 1 Nov from Indianapolis to Helena, returning Tue, 3 Nov, priced at €639 found 20 hours ago
Delta
Sun, 1 Nov - Tue, 3 Nov
IND
Indianapolis
HLN
Helena
€640 Return, found 20 hours ago
€640
Return
found 20 hours ago
Select Delta flight, departing Sun, 1 Nov from Indianapolis to Helena, returning Tue, 3 Nov, priced at €640 found 20 hours ago
Delta
Sun, 1 Nov - Tue, 3 Nov
IND
Indianapolis
HLN
Helena
€644 Return, found 20 hours ago
€644
Return
found 20 hours ago
Select Delta flight, departing Sun, 1 Nov from Indianapolis to Helena, returning Tue, 3 Nov, priced at €644 found 20 hours ago
Delta
Sun, 1 Nov - Tue, 3 Nov
IND
Indianapolis
HLN
Helena
€677 Return, found 20 hours ago
€677
Return
found 20 hours ago
Select Delta flight, departing Sun, 1 Nov from Indianapolis to Helena, returning Tue, 3 Nov, priced at €677 found 20 hours ago
Delta
Sun, 1 Nov - Tue, 3 Nov
IND
Indianapolis
HLN
Helena
€682 Return, found 20 hours ago
€682
Return
found 20 hours ago
Select Delta flight, departing Sun, 1 Nov from Indianapolis to Helena, returning Tue, 3 Nov, priced at €682 found 20 hours ago
United
Sun, 1 Nov - Tue, 3 Nov
IND
Indianapolis
HLN
Helena
€854 Return, found 20 hours ago
€854
Return
found 20 hours ago
Select United flight, departing Sun, 1 Nov from Indianapolis to Helena, returning Tue, 3 Nov, priced at €854 found 20 hours ago
United
Sun, 1 Nov - Tue, 3 Nov
IND
Indianapolis
HLN
Helena
€858 Return, found 20 hours ago
€858
Return
found 20 hours ago
Select United flight, departing Sun, 1 Nov from Indianapolis to Helena, returning Tue, 3 Nov, priced at €858 found 20 hours ago
United
Sun, 1 Nov - Tue, 3 Nov
IND
Indianapolis
HLN
Helena
€887 Return, found 20 hours ago
€887
Return
found 20 hours ago
Select United flight, departing Sun, 1 Nov from Indianapolis to Helena, returning Tue, 3 Nov, priced at €887 found 20 hours ago
United
Sun, 1 Nov - Tue, 3 Nov
IND
Indianapolis
HLN
Helena
€888 Return, found 20 hours ago
€888
Return
found 20 hours ago
Select United flight, departing Sun, 1 Nov from Indianapolis to Helena, returning Tue, 3 Nov, priced at €888 found 20 hours ago
United
Sun, 1 Nov - Tue, 3 Nov
IND
Indianapolis
HLN
Helena
€892 Return, found 20 hours ago
€892
Return
found 20 hours ago
Select United flight, departing Sun, 1 Nov from Indianapolis to Helena, returning Tue, 3 Nov, priced at €892 found 20 hours ago

About Lewis and Clark County

Expedia offers flights to Lewis and Clark County to meet every traveller's needs. Whatever your flight need - Expedia has the flight for you. So choose from flights to Lewis and Clark County or destinations around the world and discover how easy it is to make your flight reservations on Expedia.

Frequently asked questions

How do I find cheap flights to Lewis and Clark County that have flexible change policies?
By using our clever "No change fee" filter, that's how. Simply type in your dates and other details, click the "Search" button, then check the box directly under the "Flexible change policies" subheading (it's on the left). Expedia makes it simple to find cheap, flexible flights to Lewis and Clark County.
Which airlines fly to Lewis and Clark County?
With a good range of airlines operating flights into or near Lewis and Clark County, you're not short on choice:

  • Delta Air Lines - 60 flights to or near Lewis and Clark County each month, including 60 flights to Helena Regional Airport (HLN) per month.
  • United Airlines - 56 flights to or near Lewis and Clark County each month, including 56 flights to Helena Regional Airport (HLN) per month.
  • Alaska Airlines - 30 flights to or near Lewis and Clark County each month, including 30 flights to Helena Regional Airport (HLN) per month.

How can I find cheap tickets to Lewis and Clark County?
A helpful strategy for getting your hands on cheap tickets is to be flexible with your dates. Start by searching for your flight to Lewis and Clark County, then click on the "flexible dates" box for a list of prices for nearby days. Want another good tip? Book well ahead of time. For an idea of costs, €533 was the lowest price for a flight to Lewis and Clark County in the last seven days.
How much is a flight to Lewis and Clark County?
You could have picked up a return air ticket to Lewis and Clark County from anywhere between €533 and €892 in the last seven days. For one-way journeys leaving from Indianapolis (IND), the lowest price during this time was €279.
What are the most popular airports to fly into in Lewis and Clark County?
Start planning your Lewis and Clark County escape by securing one of the 147 flights a month to Helena Regional Airport (HLN). This is the region's main gateway.
How much is a plane ticket to Lewis and Clark County?
In the last seven days, plane fares to Lewis and Clark County cost between €533 and €892. The early bird catches the worm, so secure a terrific deal today.
What is the best time to go to Lewis and Clark County?
Helena, Lewis and Clark County's leading city, is a superb location to tour around at anytime. Not a fan of cooler weather? Then travel here from June 20 onward during the summer months, when temperatures range from 7ºC to 24ºC. March, May and July is when Helena is at its busiest.
What months are the cheapest to book a flight to Lewis and Clark County?
Snap up a ticket in February for the lowest-priced flights to Lewis and Clark County. December is normally the most expensive time to purchase a fare.
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