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Cheap flights from District of Columbia to Helena from $254

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from District of Columbia to Helena departing on 1/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from District of Columbia to Helena

Cheap round-trip flights

Enter your travel dates to find the best prices.
Hawaiian Airlines Logo
6:04 pm - 6:11 pm
IAD
-
HLN
26h 07m1 stop
Hawaiian Airlines Logo
6:48 pm - 4:26 pm
HLN
-
IAD
19h 38m1 stop
$345Hawaiian Airlines
Mon, Jan 12 - Tue, Jan 20
Alaska Airlines Logo
8:00 am - 6:11 pm
DCA
-
HLN
12h 11m1 stop
Alaska Airlines Logo
6:48 pm - 4:09 pm
HLN
-
DCA
19h 21m1 stop
$354Alaska Airlines
Wed, Jan 21 - Mon, Jan 26
Alaska Airlines Logo
6:04 pm - 6:11 pm
IAD
-
HLN
26h 07m1 stop
Alaska Airlines Logo
6:48 pm - 4:26 pm
HLN
-
IAD
19h 38m1 stop
$354Alaska Airlines
Sat, Jan 31 - Wed, Feb 4
Delta Logo
7:30 am - 12:27 pm
IAD
-
HLN
30h 57m2 stops
Delta Logo
1:10 pm - 11:10 pm
HLN
-
IAD
32h 00m2 stops
$357Delta
Mon, Jan 12 - Tue, Jan 20
Alaska Airlines Logo
6:04 pm - 6:11 pm
IAD
-
HLN
26h 07m1 stop
Alaska Airlines Logo
6:48 pm - 4:26 pm
HLN
-
IAD
19h 38m1 stop
$364Alaska Airlines
Wed, Jan 21 - Mon, Jan 26
Delta Logo
5:10 pm - 10:29 pm
DCA
-
HLN
7h 19m1 stop
Delta Logo
5:30 am - 4:00 pm
HLN
-
DCA
8h 30m1 stop
$389Delta
Sat, Jan 10 - Tue, Jan 13
Alaska Airlines Logo
6:04 pm - 6:11 pm
IAD
-
HLN
26h 07m1 stop
Alaska Airlines Logo
6:48 pm - 4:26 pm
HLN
-
IAD
19h 38m1 stop
$393Alaska Airlines
Sat, Jan 31 - Wed, Feb 4
Delta Logo
5:10 pm - 10:29 pm
DCA
-
HLN
7h 19m1 stop
Delta Logo
5:30 am - 6:27 pm
HLN
-
DCA
10h 57m2 stops
$394Delta
Sat, Jan 10 - Tue, Jan 13
Alaska Airlines Logo
8:00 am - 6:11 pm
DCA
-
HLN
12h 11m1 stop
Alaska Airlines Logo
6:48 pm - 4:01 pm
HLN
-
DCA
19h 13m2 stops
$402Alaska Airlines
Wed, Jan 21 - Mon, Jan 26
United Airlines Logo
4:11 pm - 9:26 pm
IAD
-
HLN
7h 15m1 stop
United Airlines Logo
2:27 pm - 11:22 pm
HLN
-
IAD
6h 55m1 stop
$438United Airlines
Wed, Jan 21 - Sun, Jan 25

Alaska Airlines flights from District of Columbia to Helena

Our best Alaska Airlines deals on District of Columbia to Helena flight tickets
Alaska Airlines
Jan 21
DCA8:00 amWashington, D.C. Reagan-National
12h 11m
1 stop
HLN6:11 pmHelena
Jan 26
HLN6:48 pmHelena
19h 21m
1 stop
DCA4:09 pmWashington, D.C. Reagan-National
$354
Find similar
Alaska Airlines
Jan 21
IAD6:04 pmWashington, D.C. Dulles Intl
26h 07m
1 stop
HLN6:11 pmHelena
Jan 26
HLN6:48 pmHelena
19h 38m
1 stop
IAD4:26 pmWashington, D.C. Dulles Intl
$364
Find similar
Alaska Airlines
Feb 21
IAD7:05 amWashington, D.C. Dulles Intl
10h 54m
1 stop
HLN3:59 pmHelena
Feb 25
HLN4:36 pmHelena
22h 44m
1 stop
IAD5:20 pmWashington, D.C. Dulles Intl
$383
Find similar

United Airlines flights from District of Columbia to Helena

Our best United Airlines deals on District of Columbia to Helena flight tickets
United Airlines
Jan 21
IAD4:11 pmWashington, D.C. Dulles Intl
7h 15m
1 stop
HLN9:26 pmHelena
Jan 25
HLN2:27 pmHelena
6h 55m
1 stop
IAD11:22 pmWashington, D.C. Dulles Intl
$438
Find similar
United Airlines
Jan 31
IAD4:11 pmWashington, D.C. Dulles Intl
7h 15m
1 stop
HLN9:26 pmHelena
Feb 4
HLN2:27 pmHelena
19h 09m
2 stops
IAD11:36 amWashington, D.C. Dulles Intl
$538
Find similar
United Airlines
Jan 21
IAD2:24 pmWashington, D.C. Dulles Intl
9h 02m
1 stop
HLN9:26 pmHelena
Jan 25
HLN2:27 pmHelena
28h 40m
1 stop
IAD9:07 pmWashington, D.C. Dulles Intl
$542
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from District of Columbia 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 December 18, 2025.
Use the filters below to find and compare flights from District of Columbia to Helena that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Helena

IAD - HLN

IADHLN

Washington, D.C. Dulles Intl

Mon 1/12

6:04 pm-6:11 pm

1 stop26h 07m

Helena

Tue 1/20

6:48 pm-4:26 pm

1 stop19h 38m

$345

Washington, D.C.Helena

DCA - HLN

DCAHLN

Washington, D.C. Reagan-National

Wed 1/21

8:00 am-6:11 pm

1 stop12h 11m

Helena

Mon 1/26

6:48 pm-4:09 pm

1 stop19h 21m

$354

Washington, D.C.Helena

IAD - HLN

IADHLN

Washington, D.C. Dulles Intl

Sat 1/31

6:04 pm-6:11 pm

1 stop26h 07m

Helena

Wed 2/4

6:48 pm-4:26 pm

1 stop19h 38m

$354

Washington, D.C.Helena

IAD - HLN

IADHLN

Washington, D.C. Dulles Intl

Mon 1/12

7:30 am-12:27 pm

2 stops30h 57m

Helena

Tue 1/20

1:10 pm-11:10 pm

2 stops32h 00m

$357

Washington, D.C.Helena

IAD - HLN

IADHLN

Washington, D.C. Dulles Intl

Wed 1/21

6:04 pm-6:11 pm

1 stop26h 07m

Helena

Mon 1/26

6:48 pm-4:26 pm

1 stop19h 38m

$364

Washington, D.C.Helena

DCA - HLN

DCAHLN

Washington, D.C. Reagan-National

Sat 1/10

5:10 pm-10:29 pm

1 stop7h 19m

Helena

Tue 1/13

5:30 am-4:00 pm

1 stop8h 30m

$389

Washington, D.C.Helena

IAD - HLN

IADHLN

Washington, D.C. Dulles Intl

Sat 1/31

6:04 pm-6:11 pm

1 stop26h 07m

Helena

Wed 2/4

6:48 pm-4:26 pm

1 stop19h 38m

$393

Washington, D.C.Helena

DCA - HLN

DCAHLN

Washington, D.C. Reagan-National

Sat 1/10

5:10 pm-10:29 pm

1 stop7h 19m

Helena

Tue 1/13

5:30 am-6:27 pm

2 stops10h 57m

$394

Washington, D.C.Helena

DCA - HLN

DCAHLN

Washington, D.C. Reagan-National

Wed 1/21

8:00 am-6:11 pm

1 stop12h 11m

Helena

Mon 1/26

6:48 pm-4:01 pm

2 stops19h 13m

$402

Washington, D.C.Helena

IAD - HLN

IADHLN

Washington, D.C. Dulles Intl

Wed 1/21

4:11 pm-9:26 pm

1 stop7h 15m

Helena

Sun 1/25

2:27 pm-11:22 pm

1 stop6h 55m

$438

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Helena from

How to get the cheapest flight ticket from District of Columbia 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 District of Columbia 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 District of Columbia 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.

Cheap District of Columbia to Helena flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from District of Columbia to Helena

Fastest flight time

6h 52m

Direct flights

None
The fastest flight from District of Columbia to Helena takes 6h 52m
There are no direct flights from District of Columbia to Helena. There are no popular flight routes from District of Columbia to Helena.
Search flight deals

  • When did momondo last update prices for flights from District of Columbia to Helena Airport?

    Prices for flights from District of Columbia to Helena Airport are updated daily.

  • How many operators does momondo search for flights from District of Columbia to Helena Airport?

  • How old do you have to be to fly from District of Columbia to Helena Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from District of Columbia 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.

Best airlines flying from District of Columbia to Helena

Compare and see reviews for airlines that fly from District of Columbia to Helena with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $408Free CancellationRating
7.4
9,091 reviews
Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from District of Columbia to Helena?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from District of Columbia to Helena. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from District of Columbia to Helena with flexible booking policies on momondo?

momondo does allow users to show only those flights to Helena from District of Columbia which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from District of Columbia to Helena?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from District of Columbia to Helena.

I’m not ready to book a flight from District of Columbia to Helena right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Helena, momondo offers a useful price alert feature which will track prices for flights to Helena from District of Columbia and alert you when they change.

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