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

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

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

As of October 2026, there is 1 operator available to choose from for flights from Helena Airport to District of Columbia.

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

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 Helena Airport to District of Columbia.

What documentation or ID do you need to fly to District of Columbia?

The necessary travel and health documents for your District of Columbia trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$208 Cheap Flights from Helena to District of Columbia in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Helena to District of Columbia

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

1:07 pm - 11:47 pmHLN Helena-IAD Washington, D.C. Dulles Intl

8h 40m1 stop Salt Lake City

7:00 am - 12:27 pmIAD Washington, D.C. Dulles Intl-HLN Helena

7h 27m1 stop Salt Lake City

$379Delta

Wed, Nov 11 - Sun, Nov 15

7:03 am - 4:48 pmHLN Helena-DCA Washington, D.C. Reagan-National

7h 45m1 stop Salt Lake City

12:30 pm - 10:32 pmDCA Washington, D.C. Reagan-National-HLN Helena

12h 02m2 stops Detroit Metropolitan Wayne County Salt Lake City

$384Delta

Thu, Dec 3 - Tue, Dec 8

1:07 pm - 11:47 pmHLN Helena-IAD Washington, D.C. Dulles Intl

8h 40m1 stop Salt Lake City

7:00 am - 12:27 pmIAD Washington, D.C. Dulles Intl-HLN Helena

7h 27m1 stop Salt Lake City

$389Delta

Wed, Nov 11 - Sun, Nov 15

1:10 pm - 11:36 pmHLN Helena-IAD Washington, D.C. Dulles Intl

8h 26m2 stops Salt Lake City Minneapolis St Paul

7:00 am - 12:30 pmIAD Washington, D.C. Dulles Intl-HLN Helena

7h 30m1 stop Salt Lake City

$451Delta

Mon, Dec 7 - Thu, Dec 10

1:10 pm - 11:47 pmHLN Helena-IAD Washington, D.C. Dulles Intl

8h 37m1 stop Salt Lake City

7:00 am - 12:30 pmIAD Washington, D.C. Dulles Intl-HLN Helena

7h 30m1 stop Salt Lake City

$472Delta

Wed, Dec 2 - Mon, Dec 7

1:10 pm - 11:47 pmHLN Helena-IAD Washington, D.C. Dulles Intl

8h 37m1 stop Salt Lake City

7:00 am - 12:30 pmIAD Washington, D.C. Dulles Intl-HLN Helena

7h 30m1 stop Salt Lake City

$472Delta

Wed, Dec 2 - Tue, Dec 8

7:15 am - 4:49 pmHLN Helena-DCA Washington, D.C. Reagan-National

7h 34m1 stop Salt Lake City

6:10 am - 12:28 pmDCA Washington, D.C. Reagan-National-HLN Helena

8h 18m2 stops Detroit Metropolitan Wayne County Salt Lake City

$474Delta

Fri, Oct 30 - Tue, Nov 3

1:10 pm - 11:47 pmHLN Helena-IAD Washington, D.C. Dulles Intl

8h 37m1 stop Salt Lake City

7:00 am - 12:30 pmIAD Washington, D.C. Dulles Intl-HLN Helena

7h 30m1 stop Salt Lake City

$476Delta

Thu, Dec 3 - Tue, Dec 8

2:27 pm - 11:26 pmHLN Helena-IAD Washington, D.C. Dulles Intl

6h 59m1 stop Denver Intl

8:15 am - 1:40 pmIAD Washington, D.C. Dulles Intl-HLN Helena

7h 25m1 stop Denver Intl

$499United Airlines

Sat, Jan 9 - Tue, Jan 12

6:20 am - 5:19 pmHLN Helena-IAD Washington, D.C. Dulles Intl

8h 59m1 stop Denver Intl

8:22 am - 1:52 pmIAD Washington, D.C. Dulles Intl-HLN Helena

7h 30m1 stop Denver Intl

$499United Airlines

Thu, Dec 3 - Wed, Dec 9

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Delta flights from Helena to District of Columbia

Our best Delta deals on Helena to District of Columbia flight tickets

Delta

Nov 11

HLN1:07 pmHelena

8h 40m

1 stop

IAD11:47 pmWashington, D.C. Dulles Intl

Nov 15

IAD7:00 amWashington, D.C. Dulles Intl

7h 27m

1 stop

HLN12:27 pmHelena

$379

Delta

Dec 3

HLN7:03 amHelena

7h 45m

1 stop

DCA4:48 pmWashington, D.C. Reagan-National

Dec 8

DCA12:30 pmWashington, D.C. Reagan-National

12h 02m

2 stops

HLN10:32 pmHelena

$384

Delta

Nov 11

HLN1:07 pmHelena

8h 40m

1 stop

IAD11:47 pmWashington, D.C. Dulles Intl

Nov 15

IAD7:00 amWashington, D.C. Dulles Intl

7h 27m

1 stop

HLN12:27 pmHelena

$389

United Airlines flights from Helena to District of Columbia

Our best United Airlines deals on Helena to District of Columbia flight tickets

United Airlines

Jan 9

HLN2:27 pmHelena

6h 59m

1 stop

IAD11:26 pmWashington, D.C. Dulles Intl

Jan 12

IAD8:15 amWashington, D.C. Dulles Intl

7h 25m

1 stop

HLN1:40 pmHelena

$499

United Airlines

Jan 9

HLN2:27 pmHelena

6h 59m

1 stop

IAD11:26 pmWashington, D.C. Dulles Intl

Jan 12

IAD8:15 amWashington, D.C. Dulles Intl

7h 25m

1 stop

HLN1:40 pmHelena

$519

United Airlines

Nov 11

HLN6:28 amHelena

9h 27m

1 stop

IAD5:55 pmWashington, D.C. Dulles Intl

Nov 15

IAD6:10 amWashington, D.C. Dulles Intl

9h 30m

1 stop

HLN1:40 pmHelena

$534

momondo Fare Finder

Use the filters below to find and compare flights from Helena to District of Columbia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

HelenaWashington, D.C.

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

HLNIAD

Helena

Wed 11/11

1:07 pm-11:47 pm

1 stop8h 40m

Washington, D.C. Dulles Intl

Sun 11/15

7:00 am-12:27 pm

1 stop7h 27m

$379

HelenaWashington, D.C.

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

HLNDCA

Helena

Thu 12/3

7:03 am-4:48 pm

1 stop7h 45m

Washington, D.C. Reagan-National

Tue 12/8

12:30 pm-10:32 pm

2 stops12h 02m

$384

HelenaWashington, D.C.

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

HLNIAD

Helena

Wed 11/11

1:07 pm-11:47 pm

1 stop8h 40m

Washington, D.C. Dulles Intl

Sun 11/15

7:00 am-12:27 pm

1 stop7h 27m

$389

HelenaWashington, D.C.

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

HLNIAD

Helena

Mon 12/7

1:10 pm-11:36 pm

2 stops8h 26m

Washington, D.C. Dulles Intl

Thu 12/10

7:00 am-12:30 pm

1 stop7h 30m

$451

HelenaWashington, D.C.

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

HLNIAD

Helena

Wed 12/2

1:10 pm-11:47 pm

1 stop8h 37m

Washington, D.C. Dulles Intl

Mon 12/7

7:00 am-12:30 pm

1 stop7h 30m

$472

HelenaWashington, D.C.

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

HLNIAD

Helena

Wed 12/2

1:10 pm-11:47 pm

1 stop8h 37m

Washington, D.C. Dulles Intl

Tue 12/8

7:00 am-12:30 pm

1 stop7h 30m

$472

HelenaWashington, D.C.

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

HLNDCA

Helena

Fri 10/30

7:15 am-4:49 pm

1 stop7h 34m

Washington, D.C. Reagan-National

Tue 11/3

6:10 am-12:28 pm

2 stops8h 18m

$474

HelenaWashington, D.C.

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

HLNIAD

Helena

Thu 12/3

1:10 pm-11:47 pm

1 stop8h 37m

Washington, D.C. Dulles Intl

Tue 12/8

7:00 am-12:30 pm

1 stop7h 30m

$476

Quickest round-trip

HelenaWashington, D.C.

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

HLNIAD

Helena

Sat 1/9

2:27 pm-11:26 pm

1 stop6h 59m

Washington, D.C. Dulles Intl

Tue 1/12

8:15 am-1:40 pm

1 stop7h 25m

$499

HelenaWashington, D.C.

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

HLNIAD

Helena

Thu 12/3

6:20 am-5:19 pm

1 stop8h 59m

Washington, D.C. Dulles Intl

Wed 12/9

8:22 am-1:52 pm

1 stop7h 30m

$499

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 Helena to District of Columbia

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 Helena to District of Columbia?

United Airlines, Delta, and Alaska Airlines are the most popular carriers operating from Helena to District of Columbia

What airlines fly to District of Columbia?

United Airlines, Delta and American Airlines are the top three most popular airlines that fly to District of Columbia from Helena according to our data. United Airlines is the first choice among our users, with 63% of people opting to fly with this airline when traveling to District of Columbia. Keep in mind that there are 5 different airlines that fly to District of Columbia on a routine basis, so you have a few additional options to choose from.

Cheap Helena to District of Columbia flight deals and tips

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

Best Price Found	$208
Fastest flight time	6h 27m
Direct flights	None

The best one-way flight to District of Columbia from Helena in the past 72 hours is $208. The best round-trip flight deal from Helena to District of Columbia found on momondo in the last 72 hours is $379.

The fastest flight from Helena to District of Columbia takes 6h 27m

There are no direct flights from Helena to District of Columbia. There are no popular flight routes from Helena to District of Columbia.

Search flight deals

Frequently asked questions about flying from Helena to District of Columbia

When did momondo last update prices for flights from Helena Airport to District of Columbia?
Prices for flights from Helena Airport to District of Columbia refresh daily.
How many operators does momondo search for flights from Helena Airport to District of Columbia?
As of October 2026, there is 1 operator available to choose from for flights from Helena Airport to District of Columbia.
How old do you have to be to fly from Helena Airport to District of Columbia?
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 Helena Airport to District of Columbia.
What documentation or ID do you need to fly to District of Columbia?
The necessary travel and health documents for your District of Columbia trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Helena to District of Columbia

Compare and see reviews for airlines that fly from Helena to District of Columbia with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $348	Free Cancellation	Rating 7.4 10,366 reviews		Search United Airlines flights

Why use momondo?

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

It is quick and easy to find Helena to District of Columbia 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 District of Columbia that suits you.

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

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

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

Once you have performed a search for Helena to District of Columbia flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Price alerts on flights to District of Columbia from Helena are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.