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Cheap flights from Washington, D.C. Reagan-National Airport to Helena from $200

This is the cheapest one-way 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 3/16. 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

Enter your travel dates to find the best prices.
United Airlines Logo
4:11 pm - 9:16 pm
DCA
-
HLN
7h 05m
1 stop
United Airlines Logo
6:15 am - 8:56 pm
HLN
-
DCA
12h 41m
2 stops
$448United Airlines
vr, feb. 20 - di, feb. 24
United Airlines Logo
4:11 pm - 9:16 pm
DCA
-
HLN
7h 05m
1 stop
United Airlines Logo
6:15 am - 2:59 pm
HLN
-
DCA
6h 44m
1 stop
$507United Airlines
vr, feb. 20 - di, feb. 24
United Airlines Logo
4:11 pm - 9:16 pm
DCA
-
HLN
7h 05m
1 stop
United Airlines Logo
6:15 am - 2:59 pm
HLN
-
DCA
6h 44m
1 stop
$654United Airlines
ma, feb. 16 - do, feb. 19
Alaska Airlines Logo
8:00 am - 3:59 pm
DCA
-
HLN
9h 59m
1 stop
Alaska Airlines Logo
4:36 pm - 9:59 pm
HLN
-
DCA
27h 23m
1 stop
$706Alaska Airlines
di, feb. 17 - za, feb. 21
Delta Logo
11:06 am - 10:27 pm
DCA
-
HLN
13h 21m
2 stops
Delta Logo
5:30 am - 6:33 pm
HLN
-
DCA
11h 03m
2 stops
$719Delta
vr, feb. 20 - di, feb. 24
Alaska Airlines Logo
9:59 am - 5:45 pm
DCA
-
HLN
33h 46m
2 stops
Alaska Airlines Logo
6:22 pm - 9:59 pm
HLN
-
DCA
25h 37m
1 stop
$726Alaska Airlines
do, mrt. 26 - zo, mrt. 29
Alaska Airlines Logo
5:00 pm - 5:45 pm
DCA
-
HLN
26h 45m
1 stop
Alaska Airlines Logo
6:22 pm - 9:59 pm
HLN
-
DCA
25h 37m
1 stop
$753Alaska Airlines
do, mrt. 26 - zo, mrt. 29
Alaska Airlines Logo
8:00 am - 4:22 pm
DCA
-
HLN
10h 22m
1 stop
Alaska Airlines Logo
4:59 pm - 4:16 pm
HLN
-
DCA
21h 17m
1 stop
$771Alaska Airlines
wo, jul. 1 - ma, jul. 6
Alaska Airlines Logo
8:00 am - 5:45 pm
DCA
-
HLN
11h 45m
1 stop
Alaska Airlines Logo
6:22 pm - 9:59 pm
HLN
-
DCA
25h 37m
1 stop
$888Alaska Airlines
vr, mrt. 27 - zo, mrt. 29
Alaska Airlines Logo
9:59 am - 5:45 pm
DCA
-
HLN
33h 46m
2 stops
Alaska Airlines Logo
6:22 pm - 9:59 pm
HLN
-
DCA
25h 37m
1 stop
$933Alaska Airlines
vr, mrt. 27 - zo, mrt. 29

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

Our best Alaska Airlines deals on Washington, D.C. Reagan-National Airport to Helena flight tickets
Alaska Airlines
Feb 17
DCA8:00 amWashington, D.C. Reagan-National
9h 59m
1 stop
HLN3:59 pmHelena
Feb 21
HLN4:36 pmHelena
27h 23m
1 stop
DCA9:59 pmWashington, D.C. Reagan-National
$706
Alaska Airlines
Mar 26
DCA9:59 amWashington, D.C. Reagan-National
33h 46m
2 stops
HLN5:45 pmHelena
Mar 29
HLN6:22 pmHelena
25h 37m
1 stop
DCA9:59 pmWashington, D.C. Reagan-National
$726
Alaska Airlines
Mar 26
DCA5:00 pmWashington, D.C. Reagan-National
26h 45m
1 stop
HLN5:45 pmHelena
Mar 29
HLN6:22 pmHelena
25h 37m
1 stop
DCA9:59 pmWashington, D.C. Reagan-National
$753

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
Feb 20
DCA4:11 pmWashington, D.C. Reagan-National
7h 05m
1 stop
HLN9:16 pmHelena
Feb 24
HLN6:15 amHelena
12h 41m
2 stops
DCA8:56 pmWashington, D.C. Reagan-National
$448
United Airlines
Feb 7
DCA4:11 pmWashington, D.C. Reagan-National
7h 15m
1 stop
HLN9:26 pmHelena
Feb 10
HLN6:15 amHelena
6h 44m
1 stop
DCA2:59 pmWashington, D.C. Reagan-National
$484
United Airlines
Feb 20
DCA4:11 pmWashington, D.C. Reagan-National
7h 05m
1 stop
HLN9:16 pmHelena
Feb 24
HLN6:15 amHelena
6h 44m
1 stop
DCA2:59 pmWashington, D.C. Reagan-National
$507

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 februari 5, 2026.
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

vr 2/20

4:11 pm-9:16 pm

1 stop7h 05m

Helena

di 2/24

6:15 am-8:56 pm

2 stops12h 41m

$448

Washington, D.C.Helena

DCA - HLN

DCAHLN

Washington, D.C. Reagan-National

vr 2/20

4:11 pm-9:16 pm

1 stop7h 05m

Helena

di 2/24

6:15 am-2:59 pm

1 stop6h 44m

$507

Washington, D.C.Helena

DCA - HLN

DCAHLN

Washington, D.C. Reagan-National

ma 2/16

4:11 pm-9:16 pm

1 stop7h 05m

Helena

do 2/19

6:15 am-2:59 pm

1 stop6h 44m

$654

Washington, D.C.Helena

DCA - HLN

DCAHLN

Washington, D.C. Reagan-National

di 2/17

8:00 am-3:59 pm

1 stop9h 59m

Helena

za 2/21

4:36 pm-9:59 pm

1 stop27h 23m

$706

Washington, D.C.Helena

DCA - HLN

DCAHLN

Washington, D.C. Reagan-National

vr 2/20

11:06 am-10:27 pm

2 stops13h 21m

Helena

di 2/24

5:30 am-6:33 pm

2 stops11h 03m

$719

Washington, D.C.Helena

DCA - HLN

DCAHLN

Washington, D.C. Reagan-National

do 3/26

9:59 am-5:45 pm

2 stops33h 46m

Helena

zo 3/29

6:22 pm-9:59 pm

1 stop25h 37m

$726

Washington, D.C.Helena

DCA - HLN

DCAHLN

Washington, D.C. Reagan-National

do 3/26

5:00 pm-5:45 pm

1 stop26h 45m

Helena

zo 3/29

6:22 pm-9:59 pm

1 stop25h 37m

$753

Washington, D.C.Helena

DCA - HLN

DCAHLN

Washington, D.C. Reagan-National

wo 7/1

8:00 am-4:22 pm

1 stop10h 22m

Helena

ma 7/6

4:59 pm-4:16 pm

1 stop21h 17m

$771

Washington, D.C.Helena

DCA - HLN

DCAHLN

Washington, D.C. Reagan-National

vr 3/27

8:00 am-5:45 pm

1 stop11h 45m

Helena

zo 3/29

6:22 pm-9:59 pm

1 stop25h 37m

$888

Washington, D.C.Helena

DCA - HLN

DCAHLN

Washington, D.C. Reagan-National

vr 3/27

9:59 am-5:45 pm

2 stops33h 46m

Helena

zo 3/29

6:22 pm-9:59 pm

1 stop25h 37m

$933

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 resultsSorted by cheapest first
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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 airline that flies from Washington, D.C. Reagan-National to Helena?

United Airlines and Alaska Airlines are the most popular carriers operating from Washington, D.C. Reagan-National to Helena

What airlines fly to Helena?

American Airlines, United Airlines and Delta are the top three most popular airlines that fly to Helena from Washington, D.C. Reagan-National Airport according to our data. American Airlines is the first choice among our users, with 46% of people opting to fly with this airline when traveling to Helena. Keep in mind that there are 4 different airlines that fly to Helena on a routine basis, so you have a few additional options to choose from.

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

Fastest flight time

7h 15m

Direct flights

None
The fastest flight from Washington, D.C. Reagan-National Airport to Helena takes 7h 15m
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.
Search flight deals

  • 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 15m.

  • 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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