How long does it take to fly to Helena?

On average, it takes 6h 28m to fly from Washington, D.C. to Helena if you fly out of Washington, D.C. (the most popular airport in Washington, D.C.) and into Bozeman (the most popular airport in Helena). If you’re flying out of Baltimore and into Bozeman, then the flight time is around 6h 34m.

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?

The number of operators available for flights from Washington, D.C. to Helena Airport is 1 as of September 2026.

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.

$208 Cheap Flights from Washington, D.C. to Helena in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Washington, D.C. to Helena

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

5:30 pm - 4:23 pmIAD Washington, D.C. Dulles Intl-HLN Helena

24h 53m1 stop Seattle/Tacoma Intl

4:08 pm - 5:31 amHLN Helena-IAD Washington, D.C. Dulles Intl

11h 23m1 stop Seattle/Tacoma Intl

$379Alaska Airlines

Mon, Jan 25 - Mon, Feb 22

5:30 pm - 4:23 pmIAD Washington, D.C. Dulles Intl-HLN Helena

24h 53m1 stop Seattle/Tacoma Intl

5:00 pm - 4:27 pmHLN Helena-IAD Washington, D.C. Dulles Intl

21h 27m1 stop Seattle/Tacoma Intl

$408Alaska Airlines

Sat, Jan 30 - Wed, Feb 3

2:25 pm - 8:59 pmIAD Washington, D.C. Dulles Intl-HLN Helena

8h 34m1 stop Denver Intl

2:30 pm - 11:13 pmHLN Helena-IAD Washington, D.C. Dulles Intl

6h 43m1 stop Denver Intl

$479United Airlines

Sat, Jan 30 - Wed, Feb 3

4:10 pm - 9:31 pmIAD Washington, D.C. Dulles Intl-HLN Helena

7h 21m1 stop Denver Intl

2:23 pm - 11:15 pmHLN Helena-IAD Washington, D.C. Dulles Intl

6h 52m1 stop Denver Intl

$479United Airlines

Wed, Nov 4 - Mon, Nov 9

4:19 pm - 9:31 pmBWI Baltimore/Washington-HLN Helena

7h 12m1 stop Denver Intl

2:23 pm - 11:08 pmHLN Helena-BWI Baltimore/Washington

6h 45m1 stop Denver Intl

$479United Airlines

Wed, Nov 4 - Mon, Nov 9

4:10 pm - 8:59 pmBWI Baltimore/Washington-HLN Helena

6h 49m1 stop Denver Intl

7:00 am - 3:06 pmHLN Helena-BWI Baltimore/Washington

6h 06m1 stop Denver Intl

$479United Airlines

Sat, Jan 30 - Wed, Feb 3

12:07 pm - 8:59 pmBWI Baltimore/Washington-HLN Helena

10h 52m2 stops Chicago O'Hare Intl Denver Intl

7:00 am - 3:06 pmHLN Helena-BWI Baltimore/Washington

6h 06m1 stop Denver Intl

$484United Airlines

Sat, Jan 30 - Wed, Feb 3

12:07 pm - 8:59 pmBWI Baltimore/Washington-HLN Helena

10h 52m2 stops Chicago O'Hare Intl Denver Intl

7:00 am - 9:31 pmHLN Helena-BWI Baltimore/Washington

12h 31m2 stops Denver Intl Chicago O'Hare Intl

$489United Airlines

Sat, Jan 30 - Wed, Feb 3

2:25 pm - 8:59 pmIAD Washington, D.C. Dulles Intl-HLN Helena

8h 34m1 stop Denver Intl

2:30 pm - 11:13 pmHLN Helena-IAD Washington, D.C. Dulles Intl

6h 43m1 stop Denver Intl

$499United Airlines

Wed, Jan 6 - Sat, Jan 9

4:07 pm - 8:59 pmDCA Washington, D.C. Reagan-National-HLN Helena

6h 52m1 stop Denver Intl

7:00 am - 2:56 pmHLN Helena-DCA Washington, D.C. Reagan-National

5h 56m1 stop Denver Intl

$514United Airlines

Fri, Jan 8 - Tue, Jan 12

Cheap last minute flights

Enter your travel dates to find the best prices.

4:18 pm - 9:30 pmBWI Baltimore/Washington-HLN Helena

7h 12m1 stop Denver Intl

6:25 am - 3:07 pmHLN Helena-BWI Baltimore/Washington

6h 42m1 stop Denver Intl

$783United Airlines

Tue, Sep 22 - Wed, Oct 7

12:10 pm - 9:30 pmBWI Baltimore/Washington-HLN Helena

11h 20m2 stops Chicago O'Hare Intl Denver Intl

6:25 am - 3:07 pmHLN Helena-BWI Baltimore/Washington

6h 42m1 stop Denver Intl

$789United Airlines

Tue, Sep 22 - Wed, Oct 7

4:18 pm - 9:30 pmBWI Baltimore/Washington-HLN Helena

7h 12m1 stop Denver Intl

6:25 am - 3:07 pmHLN Helena-BWI Baltimore/Washington

6h 42m1 stop Denver Intl

$863United Airlines

Tue, Sep 22 - Wed, Oct 7

12:10 pm - 9:30 pmBWI Baltimore/Washington-HLN Helena

11h 20m2 stops Chicago O'Hare Intl Denver Intl

6:25 am - 3:07 pmHLN Helena-BWI Baltimore/Washington

6h 42m1 stop Denver Intl

$869United Airlines

Tue, Sep 22 - Wed, Oct 7

12:10 pm - 9:30 pmBWI Baltimore/Washington-HLN Helena

11h 20m2 stops Chicago O'Hare Intl Denver Intl

6:25 am - 6:13 pmHLN Helena-BWI Baltimore/Washington

9h 48m2 stops Denver Intl Chicago O'Hare Intl

$926United Airlines

Tue, Sep 22 - Wed, Oct 7

10:25 am - 9:30 pmBWI Baltimore/Washington-HLN Helena

13h 05m2 stops Chicago O'Hare Intl Denver Intl

6:25 am - 6:13 pmHLN Helena-BWI Baltimore/Washington

9h 48m2 stops Denver Intl Chicago O'Hare Intl

$1,005United Airlines

Tue, Sep 22 - Wed, Oct 7

7:00 am - 12:17 pmIAD Washington, D.C. Dulles Intl-HLN Helena

7h 17m1 stop Salt Lake City

12:57 pm - 11:43 pmHLN Helena-IAD Washington, D.C. Dulles Intl

8h 46m1 stop Salt Lake City

$1,017Delta

Mon, Sep 21 - Sun, Sep 27

12:25 pm - 10:24 pmIAD Washington, D.C. Dulles Intl-HLN Helena

11h 59m2 stops New York John F Kennedy Intl Salt Lake City

12:57 pm - 11:43 pmHLN Helena-IAD Washington, D.C. Dulles Intl

8h 46m1 stop Salt Lake City

$1,022Delta

Mon, Sep 21 - Sun, Sep 27

7:15 pm - 4:41 pmBWI Baltimore/Washington-HLN Helena

23h 26m1 stop Seattle/Tacoma Intl

5:18 pm - 6:30 amHLN Helena-BWI Baltimore/Washington

11h 12m1 stop Seattle/Tacoma Intl

$1,364Alaska Airlines

Mon, Sep 21 - Sun, Sep 27

7:15 pm - 4:41 pmBWI Baltimore/Washington-HLN Helena

23h 26m1 stop Seattle/Tacoma Intl

5:18 pm - 3:40 pmHLN Helena-BWI Baltimore/Washington

20h 22m2 stops Seattle/Tacoma Intl Portland

$1,477Alaska Airlines

Mon, Sep 21 - Sun, Sep 27

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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 30

BWI4:10 pmBaltimore/Washington

6h 49m

1 stop

HLN8:59 pmHelena

Feb 3

HLN7:00 amHelena

6h 06m

1 stop

BWI3:06 pmBaltimore/Washington

$479

United Airlines

Jan 30

BWI12:07 pmBaltimore/Washington

10h 52m

2 stops

HLN8:59 pmHelena

Feb 3

HLN7:00 amHelena

6h 06m

1 stop

BWI3:06 pmBaltimore/Washington

$484

United Airlines

Jan 30

BWI12:07 pmBaltimore/Washington

10h 52m

2 stops

HLN8:59 pmHelena

Feb 3

HLN7:00 amHelena

12h 31m

2 stops

BWI9:31 pmBaltimore/Washington

$489

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 25

IAD5:30 pmWashington, D.C. Dulles Intl

24h 53m

1 stop

HLN4:23 pmHelena

Feb 22

HLN4:08 pmHelena

11h 23m

1 stop

IAD5:31 amWashington, D.C. Dulles Intl

$379

Alaska Airlines

Jan 30

IAD5:30 pmWashington, D.C. Dulles Intl

24h 53m

1 stop

HLN4:23 pmHelena

Feb 3

HLN5:00 pmHelena

21h 27m

1 stop

IAD4:27 pmWashington, D.C. Dulles Intl

$408

Alaska Airlines

Oct 22

BWI6:15 pmBaltimore/Washington

24h 34m

1 stop

HLN4:49 pmHelena

Nov 5

HLN4:41 pmHelena

10h 59m

1 stop

BWI5:40 amBaltimore/Washington

$519

momondo Fare Finder

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

Cheapest round-trip

Washington, D.C.Helena

IAD Washington, D.C. Dulles Intl - HLN Helena

IADHLN

Washington, D.C. Dulles Intl

Mon 1/25

5:30 pm-4:23 pm

1 stop24h 53m

Helena

Mon 2/22

4:08 pm-5:31 am

1 stop11h 23m

$379

Washington, D.C.Helena

IAD Washington, D.C. Dulles Intl - HLN Helena

IADHLN

Washington, D.C. Dulles Intl

Sat 1/30

5:30 pm-4:23 pm

1 stop24h 53m

Helena

Wed 2/3

5:00 pm-4:27 pm

1 stop21h 27m

$408

Washington, D.C.Helena

IAD Washington, D.C. Dulles Intl - HLN Helena

IADHLN

Washington, D.C. Dulles Intl

Sat 1/30

2:25 pm-8:59 pm

1 stop8h 34m

Helena

Wed 2/3

2:30 pm-11:13 pm

1 stop6h 43m

$479

Washington, D.C.Helena

IAD Washington, D.C. Dulles Intl - HLN Helena

IADHLN

Washington, D.C. Dulles Intl

Wed 11/4

4:10 pm-9:31 pm

1 stop7h 21m

Helena

Mon 11/9

2:23 pm-11:15 pm

1 stop6h 52m

$479

BaltimoreHelena

BWI Baltimore/Washington - HLN Helena

BWIHLN

Baltimore/Washington

Wed 11/4

4:19 pm-9:31 pm

1 stop7h 12m

Helena

Mon 11/9

2:23 pm-11:08 pm

1 stop6h 45m

$479

BaltimoreHelena

BWI Baltimore/Washington - HLN Helena

BWIHLN

Baltimore/Washington

Sat 1/30

4:10 pm-8:59 pm

1 stop6h 49m

Helena

Wed 2/3

7:00 am-3:06 pm

1 stop6h 06m

$479

BaltimoreHelena

BWI Baltimore/Washington - HLN Helena

BWIHLN

Baltimore/Washington

Sat 1/30

12:07 pm-8:59 pm

2 stops10h 52m

Helena

Wed 2/3

7:00 am-3:06 pm

1 stop6h 06m

$484

BaltimoreHelena

BWI Baltimore/Washington - HLN Helena

BWIHLN

Baltimore/Washington

Sat 1/30

12:07 pm-8:59 pm

2 stops10h 52m

Helena

Wed 2/3

7:00 am-9:31 pm

2 stops12h 31m

$489

Washington, D.C.Helena

IAD Washington, D.C. Dulles Intl - HLN Helena

IADHLN

Washington, D.C. Dulles Intl

Wed 1/6

2:25 pm-8:59 pm

1 stop8h 34m

Helena

Sat 1/9

2:30 pm-11:13 pm

1 stop6h 43m

$499

Quickest round-trip

Washington, D.C.Helena

DCA Washington, D.C. Reagan-National - HLN Helena

DCAHLN

Washington, D.C. Reagan-National

Fri 1/8

4:07 pm-8:59 pm

1 stop6h 52m

Helena

Tue 1/12

7:00 am-2:56 pm

1 stop5h 56m

$514

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Airlines

Other information

What is the cheapest airline that flies from Washington, D.C. to Helena?

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

What airlines fly to Helena?

United Airlines, Delta and Southwest are the top three most popular airlines that fly to Helena from Washington, D.C. according to our data. United Airlines is the first choice among our users, with 57% of people opting to fly with this airline when traveling to Helena. Keep in mind that there are 5 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. 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

Best Price Found	$208
Fastest flight time	6h 42m
Direct flights	None

The best one-way flight to Helena from Washington, D.C. in the past 72 hours is $208. The best round-trip flight deal from Washington, D.C. to Helena found on momondo in the last 72 hours is $379.

The fastest flight from Washington, D.C. to Helena takes 6h 42m

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

Frequently asked questions about flying from Washington, D.C. to Helena

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 42m.
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?
The number of operators available for flights from Washington, D.C. to Helena Airport is 1 as of September 2026.
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?
Based on momondo bookings for flights between Washington, D.C. and Helena, the leading airline is United Airlines, making up 59% of the total bookings. Other popular airlines include Delta with 41%.

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 Airlines	PriceFrom $378	Free Cancellation	Rating 7.4 10,232 reviews		Search United Airlines flights

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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.

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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.