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Cheap flights from Washington, D.C. Reagan-National Airport to Helena from $515

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. Reagan-National Airport to Helena departing on 10/29. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Washington, D.C. Reagan-National Airport to Helena

Cheap round-trip flights

Alaska Airlines Logo
8:00 am - 5:36 pmDCA-HLN
11h 36m1 stop
Alaska Airlines Logo
6:13 pm - 9:59 pmHLN-DCA
25h 46m1 stop
$515Alaska Airlines
Find Deal
Wed, Oct 29 - Wed, Nov 5
Alaska Airlines Logo
8:00 am - 5:36 pmDCA-HLN
11h 36m1 stop
Alaska Airlines Logo
6:13 pm - 8:00 pmHLN-DCA
23h 47m2 stops
$585Alaska Airlines
Find Deal
Wed, Oct 29 - Wed, Nov 5
Alaska Airlines Logo
8:00 am - 5:41 pmDCA-HLN
11h 41m1 stop
Alaska Airlines Logo
6:18 pm - 9:59 pmHLN-DCA
25h 41m1 stop
$677Alaska Airlines
Find Deal
Fri, Oct 17 - Tue, Oct 21
Hawaiian Airlines Logo
5:06 pm - 5:41 pmDCA-HLN
26h 35m1 stop
Hawaiian Airlines Logo
6:18 pm - 9:59 pmHLN-DCA
25h 41m1 stop
$708Hawaiian Airlines
Find Deal
Fri, Oct 3 - Sun, Oct 19
Alaska Airlines Logo
8:00 am - 5:41 pmDCA-HLN
11h 41m1 stop
Alaska Airlines Logo
6:18 pm - 4:48 pmHLN-DCA
20h 30m1 stop
$732Alaska Airlines
Find Deal
Fri, Oct 17 - Tue, Oct 21
Alaska Airlines Logo
8:00 am - 5:41 pmDCA-HLN
11h 41m1 stop
Alaska Airlines Logo
6:18 pm - 4:03 pmHLN-DCA
19h 45m2 stops
$741Alaska Airlines
Find Deal
Fri, Oct 17 - Tue, Oct 21
Delta Logo
12:31 pm - 10:16 pmDCA-HLN
11h 45m2 stops
Delta Logo
5:45 am - 6:59 pmHLN-DCA
11h 14m2 stops
$766Delta
Find Deal
Wed, Oct 29 - Wed, Nov 5
Delta Logo
11:10 am - 10:16 pmDCA-HLN
13h 06m2 stops
Delta Logo
5:45 am - 6:59 pmHLN-DCA
11h 14m2 stops
$1,064Delta
Find Deal
Fri, Oct 17 - Tue, Oct 21
United Airlines Logo
4:17 pm - 9:22 pmDCA-HLN
7h 05m1 stop
United Airlines Logo
6:40 am - 2:55 pmHLN-DCA
6h 15m1 stop
$1,137United Airlines
Find Deal
Sun, Nov 23 - Fri, Nov 28
United Airlines Logo
4:17 pm - 9:22 pmDCA-HLN
7h 05m1 stop
United Airlines Logo
6:40 am - 2:55 pmHLN-DCA
6h 15m1 stop
$1,399United Airlines
Find Deal
Sat, Nov 22 - Sun, Nov 30

United Airlines flights from Washington, D.C. Reagan-National Airport to Helena

Our best United Airlines deals on Washington, D.C. Reagan-National Airport to Helena flight tickets
United Airlines
Nov 23
DCA4:17 pmWashington, D.C. Reagan-National
7h 05m
1 stop
HLN9:22 pmHelena
Nov 28
HLN6:40 amHelena
6h 15m
1 stop
DCA2:55 pmWashington, D.C. Reagan-National
$1,137
Find similar
United Airlines
Nov 22
DCA4:17 pmWashington, D.C. Reagan-National
7h 05m
1 stop
HLN9:22 pmHelena
Nov 30
HLN6:40 amHelena
6h 15m
1 stop
DCA2:55 pmWashington, D.C. Reagan-National
$1,399
Find similar
United Airlines
Nov 23
DCA4:17 pmWashington, D.C. Reagan-National
7h 05m
1 stop
HLN9:22 pmHelena
Dec 1
HLN6:40 amHelena
6h 15m
1 stop
DCA2:55 pmWashington, D.C. Reagan-National
$2,074
Find similar

Delta flights from Washington, D.C. Reagan-National Airport to Helena

Our best Delta deals on Washington, D.C. Reagan-National Airport to Helena flight tickets
Delta
Oct 29
DCA12:31 pmWashington, D.C. Reagan-National
11h 45m
2 stops
HLN10:16 pmHelena
Nov 5
HLN5:45 amHelena
11h 14m
2 stops
DCA6:59 pmWashington, D.C. Reagan-National
$766
Find similar
Delta
Oct 17
DCA11:10 amWashington, D.C. Reagan-National
13h 06m
2 stops
HLN10:16 pmHelena
Oct 21
HLN5:45 amHelena
11h 14m
2 stops
DCA6:59 pmWashington, D.C. Reagan-National
$1,064
Find similar
Delta
Nov 23
DCA5:05 pmWashington, D.C. Reagan-National
7h 32m
1 stop
HLN10:37 pmHelena
Nov 29
HLN5:33 amHelena
8h 27m
1 stop
DCA4:00 pmWashington, D.C. Reagan-National
$1,141
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Reagan-National Airport to Helena that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated September 15, 2025.
Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to Helena that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Helena

DCA - HLN

DCAHLN

Washington, D.C. Reagan-National

Wed 10/29

8:00 am-5:36 pm

1 stop11h 36m

Helena

Wed 11/5

6:13 pm-9:59 pm

1 stop25h 46m

$515

Washington, D.C.Helena

DCA - HLN

DCAHLN

Washington, D.C. Reagan-National

Wed 10/29

8:00 am-5:36 pm

1 stop11h 36m

Helena

Wed 11/5

6:13 pm-8:00 pm

2 stops23h 47m

$585

Washington, D.C.Helena

DCA - HLN

DCAHLN

Washington, D.C. Reagan-National

Fri 10/17

8:00 am-5:41 pm

1 stop11h 41m

Helena

Tue 10/21

6:18 pm-9:59 pm

1 stop25h 41m

$677

Washington, D.C.Helena

DCA - HLN

DCAHLN

Washington, D.C. Reagan-National

Fri 10/3

5:06 pm-5:41 pm

1 stop26h 35m

Helena

Sun 10/19

6:18 pm-9:59 pm

1 stop25h 41m

$708

Washington, D.C.Helena

DCA - HLN

DCAHLN

Washington, D.C. Reagan-National

Fri 10/17

8:00 am-5:41 pm

1 stop11h 41m

Helena

Tue 10/21

6:18 pm-4:48 pm

1 stop20h 30m

$732

Washington, D.C.Helena

DCA - HLN

DCAHLN

Washington, D.C. Reagan-National

Fri 10/17

8:00 am-5:41 pm

1 stop11h 41m

Helena

Tue 10/21

6:18 pm-4:03 pm

2 stops19h 45m

$741

Washington, D.C.Helena

DCA - HLN

DCAHLN

Washington, D.C. Reagan-National

Wed 10/29

12:31 pm-10:16 pm

2 stops11h 45m

Helena

Wed 11/5

5:45 am-6:59 pm

2 stops11h 14m

$766

Washington, D.C.Helena

DCA - HLN

DCAHLN

Washington, D.C. Reagan-National

Fri 10/17

11:10 am-10:16 pm

2 stops13h 06m

Helena

Tue 10/21

5:45 am-6:59 pm

2 stops11h 14m

$1,064

Washington, D.C.Helena

DCA - HLN

DCAHLN

Washington, D.C. Reagan-National

Sun 11/23

4:17 pm-9:22 pm

1 stop7h 05m

Helena

Fri 11/28

6:40 am-2:55 pm

1 stop6h 15m

$1,137

Washington, D.C.Helena

DCA - HLN

DCAHLN

Washington, D.C. Reagan-National

Sat 11/22

4:17 pm-9:22 pm

1 stop7h 05m

Helena

Sun 11/30

6:40 am-2:55 pm

1 stop6h 15m

$1,399

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Helena from

How to get the cheapest flight ticket from Washington, D.C. Reagan-National Airport to Helena

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Helena?

The cheapest day to depart from Washington, D.C. Reagan-National Airport to Helena is on a Tuesday. Travelers who choose to depart for Helena on a Tuesday will often find tickets for as low as $545. The most expensive day to fly to Helena is Friday, with ticket prices averaging around $1,026.

What is the cheapest time of day to depart on your flight to Helena?

According to our data, the cheapest time of day to fly to Helena is in the morning. momondo users have found flights departing from Washington, D.C. Reagan-National Airport to Helena in the morning for as low as $662. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Helena is in the afternoon when prices are around $723.

When to book flights from Washington, D.C. Reagan-National Airport to Helena

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. Reagan-National Airport to Helena according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Washington, D.C. Reagan-National Airport to Helena (DCA to HLN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. Reagan-National Airport to Helena

Direct flights

None
There are no direct flights from Washington, D.C. Reagan-National Airport to Helena. There are no popular flight routes from Washington, D.C. Reagan-National Airport to Helena.
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  • How far is Washington, D.C. Reagan-National to Helena by plane?

    The straight-line distance from Washington, D.C. Reagan-National to Helena is 1837.0 mi. A reasonable flight in good conditions will take 7h 05m.

  • When did momondo last update prices for flights from Washington, D.C. Reagan-National Airport to Helena Airport?

    Prices for flights from Washington, D.C. Reagan-National Airport to Helena Airport refresh daily.

  • How old do you have to be to fly from Washington, D.C. Reagan-National Airport to Helena Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. Reagan-National Airport to Helena Airport.

  • What documentation or ID do you need to fly to Helena Airport?

    The travel and health documents you'll need for your trip to Helena Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Helena Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to Helena?

It is quick and easy to find Washington, D.C. to Helena flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Helena that suits you.

Can I find flights from Washington, D.C. to Helena with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Helena from Washington, D.C. with this policy.

How can momondo help me find flights from Washington, D.C. to Helena?

momondo provides multiple filters to help you find the best flight to Helena from Washington, D.C.. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Washington, D.C. to Helena right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Washington, D.C. to Helena flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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