Which airport is the most popular layover for flights between Washington, D.C. and Helena?

Salt Lake City (SLC) was the most common stop: 50% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport has the shortest travel time from Washington, D.C. to Helena?

Flights connecting via Minneapolis (MSP) have the shortest average one-way travel time: 6h 15m.

What airlines fly to Helena?

United Airlines, Delta and American Airlines are the top three most popular airlines that fly to Helena from Washington, D.C. according to our data. United Airlines is the first choice among our users, with 38% of people opting to fly with this airline when traveling to Helena. Keep in mind that there are 5 different airlines that fly to Helena on a routine basis, so you have a few additional options to choose from.

Which layover airport offers the lowest fares from Washington, D.C. to Helena?

Flights via Minneapolis (MSP) offer the lowest average round-trip price of $509.

What is the cheapest airline that flies from Washington, D.C. to Helena?

Delta, Hawaiian Airlines, and Alaska Airlines are the most popular carriers operating from Washington, D.C. to Helena

Which layover airport has the shortest connection time from Washington, D.C. to Helena?

Minneapolis (MSP) has the shortest average layover time for this route: 1h 18m.

How long does it take to fly to Helena?

On average, it takes 5h 37m to fly from Washington, D.C. to Helena if you fly out of Washington, D.C. (the most popular airport in Washington, D.C.) and into Bozeman (the most popular airport in Helena). If you’re flying out of Baltimore and into Bozeman, then the flight time is around 6h 20m.

When did momondo last update prices for flights from Washington, D.C. to Helena Airport?

Prices for flights from Washington, D.C. to Helena Airport refresh daily.

How many operators does momondo search for flights from Washington, D.C. to Helena Airport?

The number of operators available for flights from Washington, D.C. to Helena Airport is 1 as of August 2025.

How old do you have to be to fly from Washington, D.C. to Helena Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington, D.C. to Helena Airport.

What documentation or ID do you need to fly to Helena Airport?

The required travel and health documents for your Helena Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Helena Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$206 Cheap Flights from Washington, D.C. to Helena in 2025

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Find the cheapest flights from Washington, D.C. to Helena

Round-trip

One-way

Last minute

Cheap round-trip flights

7:00 am - 3:21 pmIAD-HLN

10h 21m1 stop

4:02 pm - 7:33 amHLN-IAD

13h 31m1 stop

$424Alaska Airlines

Find Deal

Sat, Sep 6 - Sat, Sep 13

7:48 pm - 5:41 pmIAD-HLN

23h 53m1 stop

6:18 pm - 6:28 pmHLN-IAD

22h 10m1 stop

$444Alaska Airlines

Find Deal

Fri, Oct 17 - Tue, Oct 21

7:51 am - 5:41 pmBWI-HLN

11h 50m1 stop

6:18 pm - 6:12 amHLN-BWI

9h 54m1 stop

$450Alaska Airlines

Find Deal

Fri, Oct 17 - Tue, Oct 21

7:30 am - 12:20 pmIAD-HLN

6h 50m1 stop

1:00 pm - 6:01 amHLN-IAD

15h 01m2 stops

$452Delta

Find Deal

Sat, Sep 6 - Sat, Sep 13

12:39 pm - 10:13 pmIAD-HLN

11h 34m2 stops

1:00 pm - 6:01 amHLN-IAD

15h 01m2 stops

$457Delta

Find Deal

Sat, Sep 6 - Sat, Sep 13

7:15 am - 12:20 pmBWI-HLN

7h 05m1 stop

5:45 am - 6:41 pmHLN-BWI

10h 56m2 stops

$469Delta

Find Deal

Sat, Oct 25 - Sat, Nov 1

10:10 pm - 9:22 pmIAD-HLN

25h 12m1 stop

2:22 pm - 4:30 pmHLN-IAD

24h 08m2 stops

$571United Airlines

Find Deal

Thu, Nov 13 - Mon, Nov 17

6:15 am - 1:27 pmBWI-HLN

9h 12m2 stops

6:40 am - 7:21 pmHLN-BWI

10h 41m1 stop

$578United Airlines

Find Deal

Thu, Nov 13 - Mon, Nov 17

10:10 am - 4:04 pmBWI-HLN

7h 54m1 stop

2:30 pm - 11:17 pmHLN-BWI

6h 47m1 stop

$596United Airlines

Find Deal

Sat, Sep 6 - Sat, Sep 13

10:34 pm - 4:04 pmIAD-HLN

19h 30m1 stop

5:20 pm - 5:22 amHLN-IAD

10h 02m1 stop

$625United Airlines

Find Deal

Mon, Aug 18 - Sat, Aug 23

Alaska Airlines flights from Washington, D.C. to Helena

Our best Alaska Airlines deals on Washington, D.C. to Helena flight tickets

Alaska Airlines

Sep 6

IAD7:00 amWashington, D.C. Dulles Intl

10h 21m

1 stop

HLN3:21 pmHelena

Sep 13

HLN4:02 pmHelena

13h 31m

1 stop

IAD7:33 amWashington, D.C. Dulles Intl

$424

Find similar

Alaska Airlines

Oct 17

IAD7:48 pmWashington, D.C. Dulles Intl

23h 53m

1 stop

HLN5:41 pmHelena

Oct 21

HLN6:18 pmHelena

22h 10m

1 stop

IAD6:28 pmWashington, D.C. Dulles Intl

$444

Find similar

Alaska Airlines

Oct 17

BWI7:51 amBaltimore/Washington

11h 50m

1 stop

HLN5:41 pmHelena

Oct 21

HLN6:18 pmHelena

9h 54m

1 stop

BWI6:12 amBaltimore/Washington

$450

Find similar

United Airlines flights from Washington, D.C. to Helena

Our best United Airlines deals on Washington, D.C. to Helena flight tickets

United Airlines

Nov 13

IAD10:10 pmWashington, D.C. Dulles Intl

25h 12m

1 stop

HLN9:22 pmHelena

Nov 17

HLN2:22 pmHelena

24h 08m

2 stops

IAD4:30 pmWashington, D.C. Dulles Intl

$571

Find similar

United Airlines

Nov 13

BWI6:15 amBaltimore/Washington

9h 12m

2 stops

HLN1:27 pmHelena

Nov 17

HLN6:40 amHelena

10h 41m

1 stop

BWI7:21 pmBaltimore/Washington

$578

Find similar

United Airlines

Sep 6

BWI10:10 amBaltimore/Washington

7h 54m

1 stop

HLN4:04 pmHelena

Sep 13

HLN2:30 pmHelena

6h 47m

1 stop

BWI11:17 pmBaltimore/Washington

$596

Find similar

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Helena

IAD - HLN

IADHLN

Washington, D.C. Dulles Intl

Sat 9/6

7:00 am-3:21 pm

1 stop10h 21m

Helena

Sat 9/13

4:02 pm-7:33 am

1 stop13h 31m

$424

Washington, D.C.Helena

IAD - HLN

IADHLN

Washington, D.C. Dulles Intl

Fri 10/17

7:48 pm-5:41 pm

1 stop23h 53m

Helena

Tue 10/21

6:18 pm-6:28 pm

1 stop22h 10m

$444

BaltimoreHelena

BWI - HLN

BWIHLN

Baltimore/Washington

Fri 10/17

7:51 am-5:41 pm

1 stop11h 50m

Helena

Tue 10/21

6:18 pm-6:12 am

1 stop9h 54m

$450

Washington, D.C.Helena

IAD - HLN

IADHLN

Washington, D.C. Dulles Intl

Sat 9/6

7:30 am-12:20 pm

1 stop6h 50m

Helena

Sat 9/13

1:00 pm-6:01 am

2 stops15h 01m

$452

Washington, D.C.Helena

IAD - HLN

IADHLN

Washington, D.C. Dulles Intl

Sat 9/6

12:39 pm-10:13 pm

2 stops11h 34m

Helena

Sat 9/13

1:00 pm-6:01 am

2 stops15h 01m

$457

BaltimoreHelena

BWI - HLN

BWIHLN

Baltimore/Washington

Sat 10/25

7:15 am-12:20 pm

1 stop7h 05m

Helena

Sat 11/1

5:45 am-6:41 pm

2 stops10h 56m

$469

Washington, D.C.Helena

IAD - HLN

IADHLN

Washington, D.C. Dulles Intl

Thu 11/13

10:10 pm-9:22 pm

1 stop25h 12m

Helena

Mon 11/17

2:22 pm-4:30 pm

2 stops24h 08m

$571

BaltimoreHelena

BWI - HLN

BWIHLN

Baltimore/Washington

Thu 11/13

6:15 am-1:27 pm

2 stops9h 12m

Helena

Mon 11/17

6:40 am-7:21 pm

1 stop10h 41m

$578

BaltimoreHelena

BWI - HLN

BWIHLN

Baltimore/Washington

Sat 9/6

10:10 am-4:04 pm

1 stop7h 54m

Helena

Sat 9/13

2:30 pm-11:17 pm

1 stop6h 47m

$596

Washington, D.C.Helena

IAD - HLN

IADHLN

Washington, D.C. Dulles Intl

Mon 8/18

10:34 pm-4:04 pm

1 stop19h 30m

Helena

Sat 8/23

5:20 pm-5:22 am

1 stop10h 02m

$625

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 Washington, D.C. to Helena

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

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What is the cheapest day to depart on your flight to Helena?

The cheapest day to depart from Washington, D.C. to Helena is on a Tuesday. Travelers who choose to depart for Helena on a Tuesday will often find tickets for as low as $545. The most expensive day to fly to Helena is Friday, with ticket prices averaging around $1,026.

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

According to our data, the cheapest time of day to fly to Helena is in the morning. momondo users have found flights departing from Washington, D.C. to Helena in the morning for as low as $662. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Helena is in the afternoon when prices are around $723.

When to book flights from Washington, D.C. to Helena

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. to Helena according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Washington, D.C. to Helena (WAS to HLN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. to Helena

Best Price Found	$206
Fastest flight time	6h 47m
Direct flights	None
Airports in Helena	1 airport

The best one-way flight to Helena from Washington, D.C. in the past 72 hours is $206. The best round-trip flight deal from Washington, D.C. to Helena found on momondo in the last 72 hours is $424.

The fastest flight from Washington, D.C. to Helena takes 6h 47m

There are no direct flights from Washington, D.C. to Helena. Popular non-direct routes for this connection are Washington, D.C. Reagan-National Airport - Helena Airport, Baltimore/Washington Airport - Helena Airport and Washington, D.C. Dulles Intl Airport - Helena Airport.

There is 1 airport near Helena: Helena (HLN)

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How far is Washington, D.C. to Helena by plane?
A flight from Washington, D.C. to Helena will travel around 1835.3 mi. In terms of flight time, this usually takes a little over 6h 47m.
When did momondo last update prices for flights from Washington, D.C. to Helena Airport?
Prices for flights from Washington, D.C. to Helena Airport refresh daily.
How many operators does momondo search for flights from Washington, D.C. to Helena Airport?
The number of operators available for flights from Washington, D.C. to Helena Airport is 1 as of August 2025.
How old do you have to be to fly from Washington, D.C. to Helena Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington, D.C. to Helena Airport.
What documentation or ID do you need to fly to Helena Airport?
The required travel and health documents for your Helena Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Helena Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from Washington, D.C. to Helena?
Based on momondo bookings for flights between Washington, D.C. and Helena, the leading airline is United Airlines, making up 59% of the total bookings. Other popular airlines include Delta with 41%.

Best airlines flying from Washington, D.C. to Helena

Compare and see reviews for airlines that fly from Washington, D.C. to Helena with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $412	Free Cancellation	Rating 7.4 8,900 reviews		Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to Helena?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Helena from Washington, D.C..

Can I find flights from Washington, D.C. to Helena with flexible booking policies on momondo?

All flight searches from Washington, D.C. to Helena on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Washington, D.C. to Helena?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Washington, D.C. to Helena.

I’m not ready to book a flight from Washington, D.C. to Helena right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Washington, D.C. to Helena flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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Cheap flights from Washington, D.C. to Helena from $206

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. to Helena departing on 9/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Alaska Airlines flights from Washington, D.C. to Helena

Our best Alaska Airlines deals on Washington, D.C. to Helena flight tickets

United Airlines flights from Washington, D.C. to Helena

Our best United Airlines deals on Washington, D.C. to Helena flight tickets

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How to get the cheapest flight ticket from Washington, D.C. to Helena

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

What is the cheapest day to depart on your flight to Helena?

The cheapest day to depart from Washington, D.C. to Helena is on a Tuesday. Travelers who choose to depart for Helena on a Tuesday will often find tickets for as low as $545. The most expensive day to fly to Helena is Friday, with ticket prices averaging around $1,026.

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

What is the cheapest airline that flies from Washington, D.C. to Helena?

Delta, Hawaiian Airlines, and Alaska Airlines are the most popular carriers operating from Washington, D.C. to Helena

What airlines fly to Helena?

Which airport is the most popular layover for flights between Washington, D.C. and Helena?

Salt Lake City (SLC) was the most common stop: 50% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from Washington, D.C. to Helena?

Flights via Minneapolis (MSP) offer the lowest average round-trip price of $509.

Which layover airport has the shortest travel time from Washington, D.C. to Helena?

Flights connecting via Minneapolis (MSP) have the shortest average one-way travel time: 6h 15m.

Which layover airport has the shortest connection time from Washington, D.C. to Helena?

Minneapolis (MSP) has the shortest average layover time for this route: 1h 18m.

How long does it take to fly to Helena?

On average, it takes 5h 37m to fly from Washington, D.C. to Helena if you fly out of Washington, D.C. (the most popular airport in Washington, D.C.) and into Bozeman (the most popular airport in Helena). If you’re flying out of Baltimore and into Bozeman, then the flight time is around 6h 20m.

When to book flights from Washington, D.C. to Helena

Cheap Washington, D.C. to Helena (WAS to HLN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. to Helena

Best Price Found

Fastest flight time

Direct flights

Airports in Helena

How far is Washington, D.C. to Helena by plane?

When did momondo last update prices for flights from Washington, D.C. to Helena Airport?

How many operators does momondo search for flights from Washington, D.C. to Helena Airport?

How old do you have to be to fly from Washington, D.C. to Helena Airport?

What documentation or ID do you need to fly to Helena Airport?

What is the most popular airline from Washington, D.C. to Helena?

Best airlines flying from Washington, D.C. to Helena

Compare and see reviews for airlines that fly from Washington, D.C. to Helena with momondo

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to Helena?

Can I find flights from Washington, D.C. to Helena with flexible booking policies on momondo?

How can momondo help me find flights from Washington, D.C. to Helena?

I’m not ready to book a flight from Washington, D.C. to Helena right now. Can momondo alert me if prices change?

An easier way to manage your Helena trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

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