What is the cheapest airline that flies from Helena to District of Columbia?

Alaska Airlines, United Airlines, and Delta 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 56% of people opting to fly with this airline when traveling to District of Columbia. Keep in mind that there are 4 different airlines that fly to District of Columbia on a routine basis, so you have a few additional options to choose from.

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 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.

$203 Cheap Flights from Helena to District of Columbia in 2025/26

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Find the cheapest flights from Helena to District of Columbia

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:28 pm - 4:36 pmHLN-IAD

20h 08m1 stop

7:34 am - 5:51 pmIAD-HLN

12h 17m1 stop

$324Alaska Airlines

Find Deal

Wed, Dec 10 - Sat, Dec 13

1:06 pm - 3:27 pmHLN-DCA

24h 21m2 stops

4:55 pm - 12:25 pmDCA-HLN

21h 30m2 stops

$336Delta

Find Deal

Wed, Dec 10 - Sat, Dec 13

6:28 pm - 9:59 pmHLN-DCA

25h 31m1 stop

8:00 am - 5:51 pmDCA-HLN

11h 51m1 stop

$349Alaska Airlines

Find Deal

Wed, Dec 10 - Sat, Dec 13

1:06 pm - 11:27 pmHLN-IAD

32h 21m2 stops

7:05 am - 12:25 pmIAD-HLN

7h 20m1 stop

$357Delta

Find Deal

Wed, Dec 10 - Sat, Dec 13

1:06 pm - 3:27 pmHLN-DCA

24h 21m2 stops

4:55 pm - 12:25 pmDCA-HLN

21h 30m2 stops

$366Delta

Find Deal

Wed, Dec 10 - Sat, Dec 13

1:06 pm - 11:27 pmHLN-IAD

32h 21m2 stops

7:15 am - 12:25 pmIAD-HLN

31h 10m2 stops

$380Delta

Find Deal

Wed, Dec 10 - Sat, Dec 13

6:15 am - 4:35 pmHLN-IAD

8h 20m1 stop

4:11 pm - 9:26 pmIAD-HLN

7h 15m1 stop

$508United Airlines

Find Deal

Sun, Jan 11 - Wed, Jan 14

6:15 am - 4:35 pmHLN-IAD

8h 20m1 stop

2:24 pm - 9:26 pmIAD-HLN

9h 02m1 stop

$519United Airlines

Find Deal

Mon, Jan 12 - Thu, Jan 15

6:40 am - 2:55 pmHLN-DCA

6h 15m1 stop

8:00 am - 1:27 pmDCA-HLN

7h 27m1 stop

$596United Airlines

Find Deal

Wed, Nov 26 - Fri, Nov 28

6:40 am - 2:55 pmHLN-DCA

6h 15m1 stop

4:17 pm - 9:22 pmDCA-HLN

7h 05m1 stop

$658United Airlines

Find Deal

Wed, Nov 26 - Fri, Nov 28

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 11

HLN6:15 amHelena

8h 20m

1 stop

IAD4:35 pmWashington, D.C. Dulles Intl

Jan 14

IAD4:11 pmWashington, D.C. Dulles Intl

7h 15m

1 stop

HLN9:26 pmHelena

$508

Find similar

United Airlines

Jan 12

HLN6:15 amHelena

8h 20m

1 stop

IAD4:35 pmWashington, D.C. Dulles Intl

Jan 15

IAD2:24 pmWashington, D.C. Dulles Intl

9h 02m

1 stop

HLN9:26 pmHelena

$519

Find similar

United Airlines

Nov 26

HLN6:40 amHelena

6h 15m

1 stop

DCA2:55 pmWashington, D.C. Reagan-National

Nov 28

DCA8:00 amWashington, D.C. Reagan-National

7h 27m

1 stop

HLN1:27 pmHelena

$596

Find similar

Delta flights from Helena to District of Columbia

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

Delta

Dec 10

HLN1:06 pmHelena

24h 21m

2 stops

DCA3:27 pmWashington, D.C. Reagan-National

Dec 13

DCA4:55 pmWashington, D.C. Reagan-National

21h 30m

2 stops

HLN12:25 pmHelena

$336

Find similar

Delta

Dec 10

HLN1:06 pmHelena

32h 21m

2 stops

IAD11:27 pmWashington, D.C. Dulles Intl

Dec 13

IAD7:05 amWashington, D.C. Dulles Intl

7h 20m

1 stop

HLN12:25 pmHelena

$357

Find similar

Delta

Dec 10

HLN1:06 pmHelena

24h 21m

2 stops

DCA3:27 pmWashington, D.C. Reagan-National

Dec 13

DCA4:55 pmWashington, D.C. Reagan-National

21h 30m

2 stops

HLN12:25 pmHelena

$366

Find similar

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

HelenaWashington, D.C.

HLN - IAD

HLNIAD

Helena

Wed 12/10

6:28 pm-4:36 pm

1 stop20h 08m

Washington, D.C. Dulles Intl

Sat 12/13

7:34 am-5:51 pm

1 stop12h 17m

$324

HelenaWashington, D.C.

HLN - DCA

HLNDCA

Helena

Wed 12/10

1:06 pm-3:27 pm

2 stops24h 21m

Washington, D.C. Reagan-National

Sat 12/13

4:55 pm-12:25 pm

2 stops21h 30m

$336

HelenaWashington, D.C.

HLN - DCA

HLNDCA

Helena

Wed 12/10

6:28 pm-9:59 pm

1 stop25h 31m

Washington, D.C. Reagan-National

Sat 12/13

8:00 am-5:51 pm

1 stop11h 51m

$349

HelenaWashington, D.C.

HLN - IAD

HLNIAD

Helena

Wed 12/10

1:06 pm-11:27 pm

2 stops32h 21m

Washington, D.C. Dulles Intl

Sat 12/13

7:05 am-12:25 pm

1 stop7h 20m

$357

HelenaWashington, D.C.

HLN - DCA

HLNDCA

Helena

Wed 12/10

1:06 pm-3:27 pm

2 stops24h 21m

Washington, D.C. Reagan-National

Sat 12/13

4:55 pm-12:25 pm

2 stops21h 30m

$366

HelenaWashington, D.C.

HLN - IAD

HLNIAD

Helena

Wed 12/10

1:06 pm-11:27 pm

2 stops32h 21m

Washington, D.C. Dulles Intl

Sat 12/13

7:15 am-12:25 pm

2 stops31h 10m

$380

HelenaWashington, D.C.

HLN - IAD

HLNIAD

Helena

Sun 1/11

6:15 am-4:35 pm

1 stop8h 20m

Washington, D.C. Dulles Intl

Wed 1/14

4:11 pm-9:26 pm

1 stop7h 15m

$508

HelenaWashington, D.C.

HLN - IAD

HLNIAD

Helena

Mon 1/12

6:15 am-4:35 pm

1 stop8h 20m

Washington, D.C. Dulles Intl

Thu 1/15

2:24 pm-9:26 pm

1 stop9h 02m

$519

HelenaWashington, D.C.

HLN - DCA

HLNDCA

Helena

Wed 11/26

6:40 am-2:55 pm

1 stop6h 15m

Washington, D.C. Reagan-National

Fri 11/28

8:00 am-1:27 pm

1 stop7h 27m

$596

HelenaWashington, D.C.

HLN - DCA

HLNDCA

Helena

Wed 11/26

6:40 am-2:55 pm

1 stop6h 15m

Washington, D.C. Reagan-National

Fri 11/28

4:17 pm-9:22 pm

1 stop7h 05m

$658

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

Prices

Airlines

What is the cheapest day to depart on your flight to District of Columbia?

The cheapest day to depart on your flight to District of Columbia is on a Tuesday when prices can be found for as low as $498. This is often the case because there is less demand to fly during this day of the week. On the other hand, Sunday is the most expensive day to depart from Helena because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $825.

What is the cheapest time of day to depart on your flight to District of Columbia?

Flying to District of Columbia from Helena at noon is the least expensive time of day to depart. momondo users have found prices as low as $514 when looking at flights departing at noon. Flights to District of Columbia are more costly in the morning, with an average ticket price of $689. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

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

Direct flights	None

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

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 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.

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.