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Washington, D.C.

$358+ Cheap flights from Helena (HLN) to Washington, D.C. (WAS)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/8. Fares are subject to change and may not be available on all flights or dates of travel.
HLN — WAS
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
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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 February 20, 2025.

Round-trip from

$358
(Alaska Airlines)

Popular in

November

Cheapest in

July

Average price

$882
From Helena to Washington, D.C. (WAS)
Search Deals
Highest demand for flights based on searches. 23% potential increase in price ($231 potential increase over avg. RT price).
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Cheapest flight prices on average. 8% potential price decrease ($62 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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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 February 20, 2025.

This Alaska Airlines deal was found by Cheapflights users on 2/20. 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.
Tue 4/84:19 pmHLN - IAD
1 stop11h 15mAlaska Airlines
Tue 4/157:00 amIAD - HLN
1 stop10h 39mAlaska Airlines
Deal found 2/20$358
This Delta deal was found by Cheapflights users on 2/20. 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.
Tue 4/81:15 pmHLN - IAD
2 stops14h 53mDelta
Tue 4/157:35 amIAD - HLN
1 stop7h 03mDelta
Deal found 2/20$364
This Delta deal was found by Cheapflights users on 2/20. 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.
Tue 4/81:15 pmHLN - BWI
2 stops9h 21mDelta
Tue 4/157:05 amBWI - HLN
1 stop7h 33mDelta
Deal found 2/20$428
This Delta deal was found by Cheapflights users on 2/20. 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.
Tue 4/85:45 amHLN - DCA
2 stops10h 19mDelta
Tue 4/156:00 amDCA - HLN
2 stops8h 38mDelta
Deal found 2/20$437
This Alaska Airlines deal was found by Cheapflights users on 2/20. 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.
Tue 4/84:19 pmHLN - DCA
1 stop27h 40mAlaska Airlines
Tue 4/158:00 amDCA - HLN
1 stop9h 39mAlaska Airlines
Deal found 2/20$445
This United deal was found by Cheapflights users on 2/20. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/86:45 amHLN - BWI
1 stop6h 20mUnited Airlines
Tue 4/154:07 pmBWI - HLN
1 stop7h 18mUnited Airlines
Deal found 2/20$528
This United deal was found by Cheapflights users on 2/19. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/72:25 pmHLN - IAD
1 stop6h 58mUnited Airlines
Sun 3/1610:20 pmIAD - HLN
1 stop17h 20mUnited Airlines
Deal found 2/19$707
This United deal was found by Cheapflights users on 2/19. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/72:25 pmHLN - DCA
2 stops30h 17mUnited Airlines
Sun 3/165:00 pmDCA - HLN
2 stops22h 40mUnited Airlines
Deal found 2/19$863

Find flights from Helena to Washington, D.C. within your budget

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 February 20, 2025.

Fly from

Helena

Fly to

Washington, D.C.

Route

Depart

Return

Price

HelenaWashington, D.C.

HLN - IAD

HLNIAD

Helena

Tue 4/8

4:19 pm-5:34 am

1 stop11h 15m

Washington, D.C. Dulles Intl

Tue 4/15

7:00 am-3:39 pm

1 stop10h 39m

$358

HelenaWashington, D.C.

HLN - IAD

HLNIAD

Helena

Tue 4/8

1:15 pm-6:08 am

2 stops14h 53m

Washington, D.C. Dulles Intl

Tue 4/15

7:35 am-12:38 pm

1 stop7h 03m

$364

HelenaBaltimore

HLN - BWI

HLNBWI

Helena

Tue 4/8

1:15 pm-12:36 am

2 stops9h 21m

Baltimore/Washington

Tue 4/15

7:05 am-12:38 pm

1 stop7h 33m

$428

HelenaWashington, D.C.

HLN - DCA

HLNDCA

Helena

Tue 4/8

5:45 am-6:04 pm

2 stops10h 19m

Washington, D.C. Reagan-National

Tue 4/15

6:00 am-12:38 pm

2 stops8h 38m

$437

HelenaWashington, D.C.

HLN - DCA

HLNDCA

Helena

Tue 4/8

4:19 pm-9:59 pm

1 stop27h 40m

Washington, D.C. Reagan-National

Tue 4/15

8:00 am-3:39 pm

1 stop9h 39m

$445

HelenaBaltimore

HLN - BWI

HLNBWI

Helena

Tue 4/8

6:45 am-3:05 pm

1 stop6h 20m

Baltimore/Washington

Tue 4/15

4:07 pm-9:25 pm

1 stop7h 18m

$528

HelenaWashington, D.C.

HLN - IAD

HLNIAD

Helena

Fri 3/7

2:25 pm-11:23 pm

1 stop6h 58m

Washington, D.C. Dulles Intl

Sun 3/16

10:20 pm-1:40 pm

1 stop17h 20m

$707

HelenaWashington, D.C.

HLN - DCA

HLNDCA

Helena

Fri 3/7

2:25 pm-10:42 pm

2 stops30h 17m

Washington, D.C. Reagan-National

Sun 3/16

5:00 pm-1:40 pm

2 stops22h 40m

$863

HelenaBaltimore

HLN - BWI

HLNBWI

Helena

Fri 4/18

2:12 pm-2:18 pm

2 stops22h 06m

$359

HelenaWashington, D.C.

HLN - IAD

HLNIAD

Helena

Fri 4/18

2:12 pm-2:23 pm

2 stops22h 11m

$380

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

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.

Travel insights for flights from Helena to Washington, D.C.

Get recent, data-driven insights about flights from Helena to Washington, D.C. including ideal travel times, pricing trends, and more.

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 $309). Flying from Helena to Washington, D.C. in June is currently the most expensive (average of $389). 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 February 20, 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 February 20, 2025.
Read reviews from past customers who have flown Alaska Airlines, Delta 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
9,692 reviews

Crew

8.5

Food

7.1

Comfort

7.9

Overall

8.0

Boarding

8.2

Entertainment

7.1

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Alaska Airlines
8.0
Very good
9,692 reviews
Alaska Airlines
8.0
Very good
9,692 reviews

Crew

8.5

Food

7.1

Comfort

7.9

Overall

8.0

Boarding

8.2

Entertainment

7.1

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Delta
8.0
Very good
8,220 reviews
Alaska Airlines
8.0
Very good
9,692 reviews

Crew

8.5

Food

7.1

Comfort

7.9

Overall

8.0

Boarding

8.2

Entertainment

7.1

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

United Airlines
7.4
Good
8,766 reviews
Alaska Airlines
8.0
Very good
9,692 reviews

Crew

8.5

Food

7.1

Comfort

7.9

Overall

8.0

Boarding

8.2

Entertainment

7.1

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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, Alaska Airlines ($358), Delta ($364), and United Airlines ($528) offers the cheapest pricing from Helena to Washington, D.C.. Alaska Airlines is currently priced 53% below the average price you’ll pay for this route.

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

    Most travelers choose Helena - Washington, D.C. Dulles Intl, Helena - Baltimore/Washington or Helena - Washington, D.C. Reagan-National 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 $309). Flying from Helena to Washington, D.C. in June is currently the most expensive (average of $389). 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
Springfield
Rockville
Tysons
Gaithersburg
Silver Spring
Fredericksburg
Linthicum Heights
Laurel
Falls Church
Woodbridge
Easton
Herndon
Bowie
Reston
National Harbor
Oxon Hill
Gettysburg

Browse thousands of different options on Cheapflights for your next trip

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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 February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$344Average$585FlexibilityNo cancel feeOn-time69%
DeltaCheapest$468Average$873FlexibilityNo cancel feeOn-timeN/A
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