Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Washington, D.C. 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. to Helena departing on 1/16. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Washington, D.C. 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
Alaska Airlines Logo
7:14 pm - 6:11 pm
BWI
-
HLN
24h 57m1 stop
Alaska Airlines Logo
6:48 pm - 6:14 pm
HLN
-
BWI
21h 26m1 stop
$368Alaska Airlines
Wed, Jan 21 - Sun, Jan 25
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
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
United Airlines Logo
8:23 am - 1:41 pm
BWI
-
HLN
7h 18m1 stop
United Airlines Logo
2:27 pm - 11:15 pm
HLN
-
BWI
6h 48m1 stop
$477United Airlines
Wed, Jan 21 - Sun, Jan 25

Alaska Airlines flights from Washington, D.C. to Helena

Our best Alaska Airlines deals on Washington, D.C. 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
Jan 21
BWI7:14 pmBaltimore/Washington
24h 57m
1 stop
HLN6:11 pmHelena
Jan 25
HLN6:48 pmHelena
21h 26m
1 stop
BWI6:14 pmBaltimore/Washington
$368
Find similar

United Airlines flights from Washington, D.C. to Helena

Our best United Airlines deals on Washington, D.C. 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 21
BWI8:23 amBaltimore/Washington
7h 18m
1 stop
HLN1:41 pmHelena
Jan 25
HLN2:27 pmHelena
6h 48m
1 stop
BWI11:15 pmBaltimore/Washington
$477
Find similar
United Airlines
Jan 21
BWI10:05 amBaltimore/Washington
13h 21m
2 stops
HLN9:26 pmHelena
Jan 25
HLN6:15 amHelena
6h 49m
1 stop
BWI3:04 pmBaltimore/Washington
$482
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. 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 Washington, D.C. 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

BaltimoreHelena

BWI - HLN

BWIHLN

Baltimore/Washington

Wed 1/21

7:14 pm-6:11 pm

1 stop24h 57m

Helena

Sun 1/25

6:48 pm-6:14 pm

1 stop21h 26m

$368

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

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

BaltimoreHelena

BWI - HLN

BWIHLN

Baltimore/Washington

Wed 1/21

8:23 am-1:41 pm

1 stop7h 18m

Helena

Sun 1/25

2:27 pm-11:15 pm

1 stop6h 48m

$477

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Helena from

How to get the cheapest flight ticket from Washington, D.C. 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. 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. 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. to Helena

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. 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. to Helena (WAS to HLN) flight deals and tips

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

Fastest flight time

6h 49m

Direct flights

None
The fastest flight from Washington, D.C. to Helena takes 6h 49m
There are no direct flights from Washington, D.C. to Helena. There are no popular flight routes from Washington, D.C. to Helena.
Search flight deals

  • How far is Washington, D.C. to Helena by plane?

    A flight from Washington, D.C. to Helena will travel around 1835.3 mi. In terms of flight time, this usually takes a little over 6h 49m.

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

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

  • How many operators does momondo search for flights from Washington, D.C. to Helena Airport?

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington, D.C. to Helena Airport.

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

    The required travel and health documents for your Helena Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Helena Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from Washington, D.C. to Helena?

Best airlines flying from Washington, D.C. to Helena

Compare and see reviews for airlines that fly from Washington, D.C. 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 Washington, D.C. to Helena?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Helena from Washington, D.C..

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

All flight searches from Washington, D.C. to Helena on momondo can be filtered to show those which offer flexible booking policies.

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

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

Yes. momondo can track prices for Washington, D.C. to Helena flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

An easier way to manage your Helena trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 1/17
Sat 1/24
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States