HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Washington, D.C.

$197+ Cheap flights from Helena (HLN) to Washington, D.C. (WAS)

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 5/12. Fares are subject to change and may not be available on all flights or dates of travel.
HLN — WAS
Apr 16 — Apr 231
Wed 4/16
Wed 4/23
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Helena to Washington, D.C. with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Helena to Washington, D.C.

Discover tips and strategies to find the most affordable flight options for your journey from Helena (HLN) to Washington, D.C. (WAS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 11, 2025.

Round-trip from

$394
(Hawaiian Airlines)

One-way from

$197
(Hawaiian Airlines)

Popular in

November

Cheapest in

April

Average price

$403
From Helena to Washington, D.C. (WAS)
Search Deals
One-way flight from Helena to Washington, D.C. (WAS)
Search Deals
Highest demand for flights based on searches. 29% potential increase in price ($294 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 10% potential price decrease ($68 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2025
Search Deals

Find flight deals from Helena to Washington, D.C.

Cheapest flights from Helena to Washington, D.C.
Explore the most affordable flight options available from Helena to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 11, 2025.

This Hawaiian Airlines deal was found by Cheapflights users on 4/10. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/127:29 pmHLN - IAD
1 stop10h 14mHawaiian Airlines
Thu 5/156:30 amIAD - HLN
1 stop11h 01mHawaiian Airlines
Deal found 4/10$394
This United Airlines deal was found by Cheapflights users on 4/10. 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 5/12:16 pmHLN - IAD
1 stop6h 56mUnited Airlines
Sat 5/38:20 amIAD - HLN
1 stop7h 11mUnited Airlines
Deal found 4/10$439
This Alaska Airlines deal was found by Cheapflights users on 4/10. 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.
Thu 5/17:29 pmHLN - IAD
1 stop10h 14mAlaska Airlines
Sat 5/35:38 pmIAD - HLN
2 stops27h 11mAlaska Airlines
Deal found 4/10$449
This Alaska Airlines deal was found by Cheapflights users on 4/10. 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.
Thu 5/17:29 pmHLN - BWI
1 stop8h 17mAlaska Airlines
Sat 5/37:06 amBWI - HLN
1 stop13h 43mAlaska Airlines
Deal found 4/10$454
This Alaska Airlines deal was found by Cheapflights users on 4/10. 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.
Thu 5/17:29 pmHLN - DCA
1 stop24h 30mAlaska Airlines
Sat 5/38:00 amDCA - HLN
1 stop12h 49mAlaska Airlines
Deal found 4/10$492
This United Airlines deal was found by Cheapflights users on 4/10. 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 5/12:16 pmHLN - BWI
1 stop7h 01mUnited Airlines
Sat 5/36:45 amBWI - HLN
2 stops8h 46mUnited Airlines
Deal found 4/10$498
This United Airlines deal was found by Cheapflights users on 4/10. 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 5/106:25 amHLN - DCA
1 stop6h 37mUnited Airlines
Thu 5/157:25 amDCA - HLN
2 stops15h 50mUnited Airlines
Deal found 4/10$818

Cheapflights Fare Finder

Customize your flight search to find flights from Helena to Washington, D.C. 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 April 11, 2025.
Use the filters below to find and compare flights from Helena to Washington, D.C. that are best for you.

Fly from

Helena

Fly to

Washington, D.C.

Route

Depart

Return

Price

HelenaWashington, D.C.

HLN - IAD

HLNIAD

Helena

Mon 5/12

7:29 pm-7:43 am

1 stop10h 14m

Washington, D.C. Dulles Intl

Thu 5/15

6:30 am-3:31 pm

1 stop11h 01m

$394

HelenaWashington, D.C.

HLN - IAD

HLNIAD

Helena

Thu 5/1

2:16 pm-11:12 pm

1 stop6h 56m

Washington, D.C. Dulles Intl

Sat 5/3

8:20 am-1:31 pm

1 stop7h 11m

$439

HelenaWashington, D.C.

HLN - IAD

HLNIAD

Helena

Thu 5/1

7:29 pm-7:43 am

1 stop10h 14m

Washington, D.C. Dulles Intl

Sat 5/3

5:38 pm-6:49 pm

2 stops27h 11m

$449

HelenaBaltimore

HLN - BWI

HLNBWI

Helena

Thu 5/1

7:29 pm-5:46 am

1 stop8h 17m

Baltimore/Washington

Sat 5/3

7:06 am-6:49 pm

1 stop13h 43m

$454

HelenaWashington, D.C.

HLN - DCA

HLNDCA

Helena

Thu 5/1

7:29 pm-9:59 pm

1 stop24h 30m

Washington, D.C. Reagan-National

Sat 5/3

8:00 am-6:49 pm

1 stop12h 49m

$492

HelenaBaltimore

HLN - BWI

HLNBWI

Helena

Thu 5/1

2:16 pm-11:17 pm

1 stop7h 01m

Baltimore/Washington

Sat 5/3

6:45 am-1:31 pm

2 stops8h 46m

$498

HelenaWashington, D.C.

HLN - DCA

HLNDCA

Helena

Sat 5/10

6:25 am-3:02 pm

1 stop6h 37m

Washington, D.C. Reagan-National

Thu 5/15

7:25 am-9:15 pm

2 stops15h 50m

$818

HelenaWashington, D.C.

HLN - IAD

HLNIAD

Helena

Mon 5/12

7:29 pm-7:43 am

1 stop10h 14m

$197

HelenaWashington, D.C.

HLN - DCA

HLNDCA

Helena

Mon 5/12

7:29 pm-9:59 pm

1 stop24h 30m

$252

HelenaWashington, D.C.

HLN - IAD

HLNIAD

Helena

Mon 5/12

7:29 pm-4:00 pm

2 stops18h 31m

$261

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/10

Showing 1-10 of 12 results
1
2

Best time to book a flight from Helena to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. 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 Washington, D.C.

What is the cheapest month to book a flight from Helena to Washington, D.C.?

Currently, August is the cheapest month in which you can book a flight from Helena to Washington, D.C. (average of $241). Flying from Helena to Washington, D.C. in March is currently the most expensive (average of $290). 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 WAS?

Find hourly flight availability from Helena to Washington, D.C.. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 11, 2025.

A simple way to save on the total cost of your ticket is to fly from Helena to Washington, D.C. at noon. If you’re flexible enough to do this you can expect to save up to 26% on your trip compared to booking a flight in the morning.

Rainfall in Washington, D.C. by month

Plan your trip to Washington, D.C. by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Washington, D.C. ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. when rainfall is around 2.6 in.

Temperature in Washington, D.C. by month

Plan your trip to Washington, D.C. by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Washington, D.C., use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

Reviews of airlines servicing Washington, D.C.

Get insights into the airlines that provide service to Washington, D.C.. 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 Washington, D.C.. Reviews last updated April 11, 2025.
Read reviews from past customers who have flown Alaska Airlines, Hawaiian Airlines and United Airlines from Helena to Washington, D.C.. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,851 reviews

Overall

8.0

Comfort

7.9

Crew

8.5

Food

7.1

Entertainment

7.1

Boarding

8.2

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Alaska Airlines
8.0
Very good
9,851 reviews
Alaska Airlines
8.0
Very good
9,851 reviews

Overall

8.0

Comfort

7.9

Crew

8.5

Food

7.1

Entertainment

7.1

Boarding

8.2

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Hawaiian Airlines
7.9
Good
2,365 reviews
Alaska Airlines
8.0
Very good
9,851 reviews

Overall

8.0

Comfort

7.9

Crew

8.5

Food

7.1

Entertainment

7.1

Boarding

8.2

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
United Airlines
7.4
Good
8,636 reviews
Alaska Airlines
8.0
Very good
9,851 reviews

Overall

8.0

Comfort

7.9

Crew

8.5

Food

7.1

Entertainment

7.1

Boarding

8.2

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Related info for your journey

Find useful and relevant information for your journey from Helena to Washington, D.C.. 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 Washington, D.C.?

    Most people fly from Helena (HLN) if they book a flight from Helena to Washington, D.C.. On average, Helena has 0 outbound flights to Washington, D.C. per day from 2 airlines. Helena is conveniently located just 2.7 mi from Helena’s city center.

  • What are the cheapest airlines flying from Helena to Washington, D.C. round-trip?

    According to our current data, Hawaiian Airlines ($394), United Airlines ($439), and Alaska Airlines ($449) offers the cheapest pricing from Helena to Washington, D.C.. Hawaiian Airlines is currently priced 44% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Helena to Washington, D.C. one-way?

    The cheapest airline one-way is Hawaiian Airlines, with whom users have recently found tickets for as low as $197. However, be on the lookout for offers from Alaska Airlines and United Airlines, as they are both options that can get you from Helena to Washington, D.C. for a low price.

  • What are the most popular routes from Helena to Washington, D.C.?

    Most travelers choose Helena - Washington, D.C. Dulles Intl, Helena - Washington, D.C. Reagan-National or Helena - Baltimore/Washington when deciding on the best route from Helena to Washington, D.C..

  • Can I find deals for flights from Helena to Washington, D.C. that include hotel bookings?

    Yes. In addition to deals on Helena to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Helena to Washington, D.C.?

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

  • Can I find deals for business class flights from Helena to Washington, D.C.?

    Yes. Cheapflights offers flight deals from Helena to Washington, D.C. 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 Washington, D.C.?

    Currently, August is the cheapest month in which you can book a flight from Helena to Washington, D.C. (average of $241). Flying from Helena to Washington, D.C. in March is currently the most expensive (average of $290). 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.

See more FAQs

Traveling to a place near Helena?

Book flights to Helena if you plan to visit one of these locations
Arlington
Alexandria
Fairfax
Tysons
Springfield
Rockville
Fredericksburg
Woodbridge
Gaithersburg
Linthicum Heights
Silver Spring
Falls Church
Laurel
Easton
Herndon
Bowie
Gettysburg
National Harbor
Oxon Hill
Reston

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 2 airlines flying from Helena to Washington, D.C.

Discover the top 2 airlines that operate flights from Helena to Washington, D.C.. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$344Average$570FlexibilityNo cancel feeOn-time69%
DeltaCheapest$468Average$947FlexibilityNo cancel feeOn-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.