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District of Columbia

$213+ Cheap flights from Helena (HLN) to District of Columbia

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/14. Fares are subject to change and may not be available on all flights or dates of travel.
HLN — IAD
Nov 15 — Nov 221
Sat 11/15
Sat 11/22
1 adult, Economy
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Find flight deals from Helena to District of Columbia

Cheapest flights from Helena to District of Columbia
Explore the most affordable flight options available from Helena to District of Columbia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 16, 2025.

This Alaska Airlines deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/106:28 pmHLN - DCA
1 stop19h 40mAlaska Airlines
Sat 12/138:00 amDCA - HLN
1 stop11h 51mAlaska Airlines
Deal found 10/14$393
This Delta deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/101:06 pmHLN - IAD
2 stops32h 21mDelta
Sat 12/137:05 amIAD - HLN
1 stop7h 20mDelta
Deal found 10/16$395
This Delta deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/105:30 amHLN - DCA
1 stop8h 30mDelta
Sat 12/134:55 pmDCA - HLN
2 stops21h 30mDelta
Deal found 10/16$430
This United Airlines deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/202:22 pmHLN - IAD
1 stop6h 53mUnited Airlines
Tue 11/253:59 pmIAD - HLN
1 stop7h 23mUnited Airlines
Deal found 10/15$508
This United Airlines deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/206:40 amHLN - DCA
1 stop6h 15mUnited Airlines
Tue 11/254:17 pmDCA - HLN
1 stop7h 05mUnited Airlines
Deal found 10/15$508
This United Airlines deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/256:40 amHLN - DCA
1 stop6h 15mUnited Airlines
Fri 11/288:00 amDCA - HLN
1 stop7h 27mUnited Airlines
Deal found 10/16$606
This United Airlines deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/12:22 pmHLN - IAD
2 stops20h 11mUnited Airlines
Wed 11/512:35 pmIAD - HLN
2 stops26h 52mUnited Airlines
Deal found 10/16$613
This United Airlines deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/266:40 amHLN - DCA
1 stop6h 15mUnited Airlines
Tue 11/114:17 pmDCA - HLN
1 stop7h 05mUnited Airlines
Deal found 10/15$742

Cheap flight deals from Helena to District of Columbia

Keep the following information in mind while searching for Helena to District of Columbia flight deals. Data was last updated October 16, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$384
(Delta)

One-way from

$213
(Orbitz)
Provider with most accurate pricing for Helena-Washington, D.C. (WAS) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Helena-Washington, D.C. (WAS) flights.
Search Deals
From Helena to District of Columbia
Search Deals
One-way flight from Helena to District of Columbia
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Helena to District of Columbia 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, Cheapflights users made 2,558,603 searches. Data last updated October 16, 2025.
Use the filters below to find and compare flights from Helena to District of Columbia that are best for you.

Fly from

Helena

Fly to

District of Columbia

Route

Depart

Return

Price

HelenaWashington, D.C.

HLN - DCA

HLNDCA

Helena

Wed 12/10

6:28 pm-4:08 pm

1 stop19h 40m

Washington, D.C. Reagan-National

Sat 12/13

8:00 am-5:51 pm

1 stop11h 51m

$393

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

$395

HelenaWashington, D.C.

HLN - DCA

HLNDCA

Helena

Wed 12/10

5:30 am-4:00 pm

1 stop8h 30m

Washington, D.C. Reagan-National

Sat 12/13

4:55 pm-12:25 pm

2 stops21h 30m

$430

HelenaWashington, D.C.

HLN - DCA

HLNDCA

Helena

Thu 11/20

6:40 am-2:55 pm

1 stop6h 15m

Washington, D.C. Reagan-National

Tue 11/25

4:17 pm-9:22 pm

1 stop7h 05m

$508

HelenaWashington, D.C.

HLN - IAD

HLNIAD

Helena

Thu 11/20

6:40 am-7:27 am

2 stops22h 47m

Washington, D.C. Dulles Intl

Tue 11/25

8:25 am-1:27 pm

1 stop7h 02m

$597

HelenaWashington, D.C.

HLN - DCA

HLNDCA

Helena

Tue 11/25

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

$606

HelenaWashington, D.C.

HLN - IAD

HLNIAD

Helena

Sat 11/1

2:22 pm-12:33 pm

2 stops20h 11m

Washington, D.C. Dulles Intl

Wed 11/5

12:35 pm-1:27 pm

2 stops26h 52m

$613

HelenaWashington, D.C.

HLN - DCA

HLNDCA

Helena

Fri 11/14

6:13 pm-5:58 pm

2 stops21h 45m

$213

HelenaWashington, D.C.

HLN - IAD

HLNIAD

Helena

Fri 11/14

6:13 pm-6:23 am

1 stop10h 10m

$222

HelenaWashington, D.C.

HLN - DCA

HLNDCA

Helena

Sun 1/4

6:32 pm-4:00 pm

2 stops19h 28m

$222

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/15

Showing 1-10 of 21 results
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Best time to book a flight from Helena to District of Columbia

Have a flexible travel schedule? Discover the best time to fly to District of Columbia from Helena with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Helena to District of Columbia

What is the cheapest month to book a flight from Helena to District of Columbia?

Currently, April is the cheapest month in which you can book a flight from Helena to District of Columbia (average of $169). Flying from Helena to District of Columbia in December is currently the most expensive (average of $327). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from HLN to DC?

Find hourly flight availability from Helena to District of Columbia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 16, 2025.

It’s optimal to fly from Helena to District of Columbia in the evening. By choosing this option you can save up to 47% on the cost of your flight, compared to a flight in the morning.

Reviews of airlines servicing District of Columbia

Get insights into the airlines that provide service to District of Columbia. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to District of Columbia. Reviews last updated October 16, 2025.
See what other customers who have flown with United Airlines from Helena to District of Columbia have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,982 reviews

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Food

6.6

Overall

7.4

Crew

8.1

Reviews

1 / 20
4.0
Okay

Tim,Sep 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.
United Airlines
7.4
Good
8,982 reviews
United Airlines
7.4
Good
8,982 reviews

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Food

6.6

Overall

7.4

Crew

8.1

Reviews

1 / 20
4.0
Okay

Tim,Sep 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.

Related info for your journey

Find useful and relevant information for your journey from Helena to District of Columbia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Helena to District of Columbia?

    If you book a flight to District of Columbia from Helena, you will be flying from Helena, which is the city’s only airport. Helena (HLN) is located 2.7 mi from the center of Helena.

  • How long is the flight from Helena to District of Columbia?

    Departing from Helena to District of Columbia will take you 19h 40m. The distance between Helena and District of Columbia is about 1835 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Helena to District of Columbia one-way?

    The cheapest airlines for a one-way flight from Helena to District of Columbia are Alaska Airlines ($213), Delta ($305), and United Airlines ($368).

  • Can I find deals for flights from Helena to District of Columbia that include hotel bookings?

    Yes. In addition to deals on Helena to District of Columbia flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Helena to District of Columbia?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Helena to District of Columbia.

  • Can I find deals for business class flights from Helena to District of Columbia?

    Yes. Cheapflights offers flight deals from Helena to District of Columbia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Helena to District of Columbia?

    Currently, April is the cheapest month in which you can book a flight from Helena to District of Columbia (average of $169). Flying from Helena to District of Columbia in December is currently the most expensive (average of $327). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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