$205 Cheap Flights from Baltimore (BWI) to Helena (HLN)

View $205 flight on Wed, Oct 1, 2025Opens in a new window

Popular airlines from Baltimore Washington Intl. Airport (BWI) to Helena, MT (HLN-Helena Regional)

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Cheap Flights from Baltimore to Helena (BWI-HLN)

Prices were available within the past 7 days and start at $205 for one-way flights and $410 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Wed, Oct 1 - Tue, Oct 21
BWI
Baltimore
HLN
Helena
$410 Roundtrip, found 1 day ago
$410
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Wed, Oct 1 from Baltimore to Helena, returning Tue, Oct 21, priced at $410 found 1 day ago
Delta
Sat, Aug 23 - Tue, Aug 26
BWI
Baltimore
HLN
Helena
$411 Roundtrip, found 3 hours ago
$411
Roundtrip
found 3 hours ago
Select Delta flight, departing Sat, Aug 23 from Baltimore to Helena, returning Tue, Aug 26, priced at $411 found 3 hours ago
Hawaiian Airlines
Sat, Sep 13 - Tue, Sep 23
BWI
Baltimore
HLN
Helena
$417 Roundtrip, found 2 days ago
$417
Roundtrip
found 2 days ago
Select Hawaiian Airlines flight, departing Sat, Sep 13 from Baltimore to Helena, returning Tue, Sep 23, priced at $417 found 2 days ago
Hawaiian Airlines
Fri, Sep 19 - Tue, Sep 23
BWI
Baltimore
HLN
Helena
$422 Roundtrip, found 2 days ago
$422
Roundtrip
found 2 days ago
Select Hawaiian Airlines flight, departing Fri, Sep 19 from Baltimore to Helena, returning Tue, Sep 23, priced at $422 found 2 days ago
United
Wed, Oct 1 - Sat, Oct 4
BWI
Baltimore
HLN
Helena
$429 Roundtrip, found 2 days ago
$429
Roundtrip
found 2 days ago
Select United flight, departing Wed, Oct 1 from Baltimore to Helena, returning Sat, Oct 4, priced at $429 found 2 days ago
Alaska Airlines
Wed, Oct 1 - Sat, Oct 4
BWI
Baltimore
HLN
Helena
$432 Roundtrip, found 2 days ago
$432
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Wed, Oct 1 from Baltimore to Helena, returning Sat, Oct 4, priced at $432 found 2 days ago
United
Wed, Oct 1 - Sat, Oct 4
BWI
Baltimore
HLN
Helena
$434 Roundtrip, found 2 days ago
$434
Roundtrip
found 2 days ago
Select United flight, departing Wed, Oct 1 from Baltimore to Helena, returning Sat, Oct 4, priced at $434 found 2 days ago
Hawaiian Airlines
Wed, Oct 1 - Mon, Oct 20
BWI
Baltimore
HLN
Helena
$436 Roundtrip, found 1 day ago
$436
Roundtrip
found 1 day ago
Select Hawaiian Airlines flight, departing Wed, Oct 1 from Baltimore to Helena, returning Mon, Oct 20, priced at $436 found 1 day ago
Delta
Wed, Oct 1 - Sat, Oct 4
BWI
Baltimore
HLN
Helena
$438 Roundtrip, found 2 days ago
$438
Roundtrip
found 2 days ago
Select Delta flight, departing Wed, Oct 1 from Baltimore to Helena, returning Sat, Oct 4, priced at $438 found 2 days ago
Bargain Flight
Wed, Sep 10 - Wed, Sep 17
BWI
Baltimore
HLN
Helena
$444 Roundtrip, found 5 days ago
$444
Roundtrip
found 5 days ago
Select Bargain Flight flight, departing Wed, Sep 10 from Baltimore to Helena, returning Wed, Sep 17, priced at $444 found 5 days ago

Find the cheapest month to fly from Baltimore (BWI) to Helena (HLN)

January is typically the cheapest month to fly

From $335 - $935 per traveler.

Graph displaying average flight prices per month

Alternative airports near Helena

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Helena Regional HLN. Cheapest and Closest option available. Average driving time to city center is 7 minutes. Flights from $623
HLN
Helena Regional
CheapestClosest
Average driving time to city center7 min
Flights from $623
Flights from Baltimore (BWI) to Helena (HLN)
Origin airport
Baltimore Washington Intl. Thurgood Marshall
Destination airport
Helena Regional
Airlines serving
Alaska Airlines, Delta, Hawaiian Airlines, United
Roundtrip price
$410
Distance
1842 mi

Baltimore to Helena Flights

The cheapest times to fly from Baltimore to Helena

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Baltimore to Helena are during the month of October. You can find some of the cheapest flights from Baltimore to Helena with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Baltimore to Helena

Sunday is one of the best days to book for cheap flights from Baltimore to Helena: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Baltimore to Helena

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Baltimore to Helena in 2025. You can also book with separate airlines for your outbound and return journeys, from $205 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Baltimore to Helena flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Baltimore to Helena airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Helena Regional Airport (HLN) cost?
Discover the latest flight deals from BWI to HLN by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from BWI to HLN?
The cheapest flights from BWI to HLN are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from BWI to HLN?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from BWI to HLN. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Helena Regional Airport (HLN)?
There aren't any daily nonstop flights departing from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Helena Regional Airport (HLN). But you can opt for flights with layovers. Filter your search on Expedia to include one or two stops, and you'll be cruising above the clouds before you know it.
What day of the week has the most flights from BWI to HLN?
Generally you'll find the largest variety of flight choices on a Friday. Tuesdays are often the quietest.* However, this can vary depending on the airline, time of year and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Helena Regional Airport (HLN)?
Book a flight from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Helena Regional Airport (HLN) that leaves before 3 PM to reduce the risk of cancellations and delays. Departures later than this are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Helena Regional Airport (HLN) last-minute?
Booking your flight from BWI to HLN just before your getaway is usually more expensive. But if you're flexible with your schedule, you could score a cheap last-minute fare.
Is it cheaper to book a BWI to HLN flight and hotel package?
Opting for a BWI to HLN flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels in one place. Choose from our extensive range of hotels and then add car rentals, flights and activities to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Helena Regional Airport (HLN)?
If you booked your BWI to HLN flight within the last 24 hours, you may be able to cancel or modify it without fees. Depending on the airline and the fare type you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal if you want more information.

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*Available to One Key members.