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District of Columbia

$176+ 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 3/31. Fares are subject to change and may not be available on all flights or dates of travel.
HLN — IAD
Mar 9 — Mar 161
Mon 3/9
Mon 3/16
1 adult, Economy
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Cheap 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 February 7, 2026.

This United Airlines deal was found by Cheapflights users on 2/6. 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.
Fri 2/202:25 pm
HLN
-
IAD
1 stop6h 54m
United Airlines
Fri 2/272:12 pm
IAD
-
HLN
1 stop9h 04m
United Airlines
Deal found 2/6$359
This United Airlines deal was found by Cheapflights users on 2/5. 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 2/212:25 pm
HLN
-
IAD
1 stop6h 53m
United Airlines
Sat 2/288:15 am
IAD
-
HLN
1 stop7h 25m
United Airlines
Deal found 2/5$404
This Expedia deal was found by Cheapflights users on 2/5. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/254:36 pm
HLN
-
DCA
1 stop21h 30m
Alaska Airlines
Sat 2/285:06 pm
DCA
-
HLN
2 stops24h 53m
Alaska Airlines
Deal found 2/5$406
This United Airlines deal was found by Cheapflights users on 2/5. 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.
Wed 2/256:15 am
HLN
-
DCA
1 stop6h 44m
United Airlines
Sat 2/284:11 pm
DCA
-
HLN
1 stop7h 05m
United Airlines
Deal found 2/5$423
This United Airlines deal was found by Cheapflights users on 2/5. 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 12/32:30 pm
HLN
-
IAD
1 stop6h 43m
United Airlines
Tue 12/84:08 pm
IAD
-
HLN
1 stop6h 51m
United Airlines
Deal found 2/5$424
This Alaska Airlines deal was found by Cheapflights users on 2/6. 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.
Fri 3/134:36 pm
HLN
-
IAD
1 stop11h 04m
Alaska Airlines
Tue 3/177:05 am
IAD
-
HLN
1 stop10h 54m
Alaska Airlines
Deal found 2/6$440
This Delta deal was found by Cheapflights users on 2/4. 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.
Fri 2/201:10 pm
HLN
-
IAD
1 stop8h 36m
Delta
Tue 2/2412:38 pm
IAD
-
HLN
2 stops11h 49m
Delta
Deal found 2/4$454
This Expedia deal was found by Cheapflights users on 2/5. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/174:59 pm
HLN
-
IAD
1 stop12h 33m
Alaska Airlines
Fri 8/217:18 pm
IAD
-
HLN
1 stop22h 13m
Alaska Airlines
Deal found 2/5$459
This Alaska Airlines deal was found by Cheapflights users on 2/4. 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 5/134:43 pm
HLN
-
IAD
1 stop12h 51m
Alaska Airlines
Sat 5/166:00 am
IAD
-
HLN
1 stop12h 06m
Alaska Airlines
Deal found 2/4$479
This Delta deal was found by Cheapflights users on 2/4. 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.
Mon 2/91:10 pm
HLN
-
IAD
1 stop8h 38m
Delta
Sun 2/157:05 am
IAD
-
HLN
1 stop7h 20m
Delta
Deal found 2/4$484
This Expedia deal was found by Cheapflights users on 2/4. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/96:48 pm
HLN
-
DCA
1 stop19h 21m
Alaska Airlines
Sun 2/158:00 am
DCA
-
HLN
1 stop9h 59m
Alaska Airlines
Deal found 2/4$484
This Delta deal was found by Cheapflights users on 2/4. 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.
Mon 2/95:30 am
HLN
-
DCA
2 stops14h 30m
Delta
Sun 2/155:10 pm
DCA
-
HLN
1 stop7h 17m
Delta
Deal found 2/4$489

Find 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 February 7, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$359
(United Airlines)

One-way from

$176
(United Airlines)
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 February 7, 2026.
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 - IAD

HLNIAD

Helena

Sat 2/21

2:25 pm-11:18 pm

1 stop6h 53m

Washington, D.C. Dulles Intl

Fri 2/27

2:12 pm-9:16 pm

1 stop9h 04m

$359

HelenaWashington, D.C.

HLN - IAD

HLNIAD

Helena

Fri 2/20

4:36 pm-5:40 am

1 stop11h 04m

Washington, D.C. Dulles Intl

Tue 2/24

7:05 am-3:59 pm

1 stop10h 54m

$359

HelenaWashington, D.C.

HLN - IAD

HLNIAD

Helena

Fri 2/20

2:25 pm-11:19 pm

1 stop6h 54m

Washington, D.C. Dulles Intl

Fri 2/27

2:12 pm-9:16 pm

1 stop9h 04m

$359

HelenaWashington, D.C.

HLN - IAD

HLNIAD

Helena

Wed 2/25

6:15 am-4:47 pm

1 stop8h 32m

Washington, D.C. Dulles Intl

Sat 2/28

8:15 am-1:40 pm

1 stop7h 25m

$404

HelenaWashington, D.C.

HLN - DCA

HLNDCA

Helena

Wed 2/25

4:36 pm-4:06 pm

1 stop21h 30m

Washington, D.C. Reagan-National

Sat 2/28

5:06 pm-3:59 pm

2 stops24h 53m

$406

HelenaWashington, D.C.

HLN - DCA

HLNDCA

Helena

Wed 2/25

6:15 am-2:59 pm

1 stop6h 44m

Washington, D.C. Reagan-National

Sat 2/28

4:11 pm-9:16 pm

1 stop7h 05m

$423

HelenaWashington, D.C.

HLN - IAD

HLNIAD

Helena

Fri 3/13

4:36 pm-5:40 am

1 stop11h 04m

Washington, D.C. Dulles Intl

Tue 3/17

7:05 am-3:59 pm

1 stop10h 54m

$440

HelenaWashington, D.C.

HLN - IAD

HLNIAD

Helena

Fri 2/20

1:10 pm-11:46 pm

1 stop8h 36m

Washington, D.C. Dulles Intl

Tue 2/24

12:38 pm-10:27 pm

2 stops11h 49m

$454

HelenaWashington, D.C.

HLN - IAD

HLNIAD

Helena

Wed 5/13

4:43 pm-7:34 am

1 stop12h 51m

Washington, D.C. Dulles Intl

Sat 5/16

6:00 am-4:06 pm

1 stop12h 06m

$479

HelenaWashington, D.C.

HLN - IAD

HLNIAD

Helena

Thu 2/19

1:10 pm-11:46 pm

1 stop8h 36m

Washington, D.C. Dulles Intl

Sun 2/22

7:05 am-12:25 pm

1 stop7h 20m

$499

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/7

Showing 1-10 of 36 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 $158). Flying from Helena to District of Columbia in July is currently the most expensive (average of $302). 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.

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 6h 53m. The distance between Helena and District of Columbia is about 1812 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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 $158). Flying from Helena to District of Columbia in July is currently the most expensive (average of $302). 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

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