Cheap Flights to Lewis and Clark County | Popular Routes to Lewis and Clark County from HK$4,413

View HK$4,413 flight on Thu, 25 Jun 2026Opens in a new window

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Cheap round-trip flights to Lewis and Clark County

Prices were available within the past 7 days and start at HK$4,413 for one-way flights and HK$7,302 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Thu, 25 Jun - Mon, 29 Jun
DAY
Dayton
HLN
Helena
HK$7,302 Return, found 14 hours ago
HK$7,302
Return
found 14 hours ago
Select United flight, departing Thu, 25 Jun from Dayton to Helena, returning Mon, 29 Jun, priced at HK$7,302 found 14 hours ago
Delta
Thu, 25 Jun - Mon, 29 Jun
DAY
Dayton
HLN
Helena
HK$8,322 Return, found 14 hours ago
HK$8,322
Return
found 14 hours ago
Select Delta flight, departing Thu, 25 Jun from Dayton to Helena, returning Mon, 29 Jun, priced at HK$8,322 found 14 hours ago
United
Thu, 25 Jun - Mon, 29 Jun
DAY
Dayton
HLN
Helena
HK$8,409 Return, found 14 hours ago
HK$8,409
Return
found 14 hours ago
Select United flight, departing Thu, 25 Jun from Dayton to Helena, returning Mon, 29 Jun, priced at HK$8,409 found 14 hours ago
Delta
Thu, 25 Jun - Mon, 29 Jun
DAY
Dayton
HLN
Helena
HK$8,871 Return, found 14 hours ago
HK$8,871
Return
found 14 hours ago
Select Delta flight, departing Thu, 25 Jun from Dayton to Helena, returning Mon, 29 Jun, priced at HK$8,871 found 14 hours ago
Delta
Thu, 25 Jun - Mon, 29 Jun
DAY
Dayton
HLN
Helena
HK$8,913 Return, found 14 hours ago
HK$8,913
Return
found 14 hours ago
Select Delta flight, departing Thu, 25 Jun from Dayton to Helena, returning Mon, 29 Jun, priced at HK$8,913 found 14 hours ago
Delta
Thu, 25 Jun - Mon, 29 Jun
DAY
Dayton
HLN
Helena
HK$9,344 Return, found 14 hours ago
HK$9,344
Return
found 14 hours ago
Select Delta flight, departing Thu, 25 Jun from Dayton to Helena, returning Mon, 29 Jun, priced at HK$9,344 found 14 hours ago
Delta
Thu, 25 Jun - Mon, 29 Jun
DAY
Dayton
HLN
Helena
HK$9,462 Return, found 14 hours ago
HK$9,462
Return
found 14 hours ago
Select Delta flight, departing Thu, 25 Jun from Dayton to Helena, returning Mon, 29 Jun, priced at HK$9,462 found 14 hours ago
Delta
Thu, 25 Jun - Mon, 29 Jun
DAY
Dayton
HLN
Helena
HK$9,827 Return, found 14 hours ago
HK$9,827
Return
found 14 hours ago
Select Delta flight, departing Thu, 25 Jun from Dayton to Helena, returning Mon, 29 Jun, priced at HK$9,827 found 14 hours ago
United
Thu, 25 Jun - Mon, 29 Jun
DAY
Dayton
HLN
Helena
HK$9,871 Return, found 14 hours ago
HK$9,871
Return
found 14 hours ago
Select United flight, departing Thu, 25 Jun from Dayton to Helena, returning Mon, 29 Jun, priced at HK$9,871 found 14 hours ago
Delta
Thu, 25 Jun - Mon, 29 Jun
DAY
Dayton
HLN
Helena
HK$9,935 Return, found 14 hours ago
HK$9,935
Return
found 14 hours ago
Select Delta flight, departing Thu, 25 Jun from Dayton to Helena, returning Mon, 29 Jun, priced at HK$9,935 found 14 hours ago
United
Thu, 25 Jun - Mon, 29 Jun
DAY
Dayton
HLN
Helena
HK$10,312 Return, found 14 hours ago
HK$10,312
Return
found 14 hours ago
Select United flight, departing Thu, 25 Jun from Dayton to Helena, returning Mon, 29 Jun, priced at HK$10,312 found 14 hours ago
Delta
Thu, 25 Jun - Mon, 29 Jun
DAY
Dayton
HLN
Helena
HK$10,376 Return, found 14 hours ago
HK$10,376
Return
found 14 hours ago
Select Delta flight, departing Thu, 25 Jun from Dayton to Helena, returning Mon, 29 Jun, priced at HK$10,376 found 14 hours ago
Delta
Thu, 25 Jun - Mon, 29 Jun
DAY
Dayton
HLN
Helena
HK$10,718 Return, found 14 hours ago
HK$10,718
Return
found 14 hours ago
Select Delta flight, departing Thu, 25 Jun from Dayton to Helena, returning Mon, 29 Jun, priced at HK$10,718 found 14 hours ago
Delta
Thu, 25 Jun - Mon, 29 Jun
DAY
Dayton
HLN
Helena
HK$10,849 Return, found 14 hours ago
HK$10,849
Return
found 14 hours ago
Select Delta flight, departing Thu, 25 Jun from Dayton to Helena, returning Mon, 29 Jun, priced at HK$10,849 found 14 hours ago

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, HK$7,302 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 HK$7,302 and HK$10,849 in the last seven days. For one-way journeys leaving from Dayton (DAY), the lowest price during this time was HK$4,413.
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.
When is the cheapest time to fly to Lewis and Clark County?
If you'd rather spend your vacation savings enjoying the delights of Lewis and Clark County rather than on flying there, jet off earlier in the week. The most cost-effective day to travel is usually Tuesday, with Monday coming in second. With many folks traveling on the weekend, Saturday typically has the costliest airfares.
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 HK$7,302 and HK$10,849. 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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About Lewis and Clark County

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About Lewis and Clark County
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