$149 Cheap Flights from Baltimore (BWI) to Missoula (MSO)

View $149 flight on Tue, Sep 30, 2025Opens in a new window

Popular airlines from Baltimore Washington Intl. Airport (BWI) to Missoula Intl. Airport (MSO)

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Cheap Flights from Baltimore to Missoula (BWI-MSO)

Prices were available within the past 7 days and start at $149 for one-way flights and $299 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Tue, Sep 23 - Tue, Sep 30
BWI
Baltimore
MSO
Missoula
$299 Roundtrip, found 23 hours ago
$299
Roundtrip
found 23 hours ago
Select American Airlines flight, departing Tue, Sep 23 from Baltimore to Missoula, returning Tue, Sep 30, priced at $299 found 23 hours ago
United
Tue, Sep 16 - Mon, Sep 22
BWI
Baltimore
MSO
Missoula
$299 Roundtrip, found 1 day ago
$299
Roundtrip
found 1 day ago
Select United flight, departing Tue, Sep 16 from Baltimore to Missoula, returning Mon, Sep 22, priced at $299 found 1 day ago
Delta
Thu, Sep 11 - Fri, Sep 26
BWI
Baltimore
MSO
Missoula
$299 Roundtrip, found 5 hours ago
$299
Roundtrip
found 5 hours ago
Select Delta flight, departing Thu, Sep 11 from Baltimore to Missoula, returning Fri, Sep 26, priced at $299 found 5 hours ago
Delta
Thu, Sep 11 - Tue, Sep 16
BWI
Baltimore
MSO
Missoula
$301 Roundtrip, found 9 hours ago
$301
Roundtrip
found 9 hours ago
Select Delta flight, departing Thu, Sep 11 from Baltimore to Missoula, returning Tue, Sep 16, priced at $301 found 9 hours ago
United
Mon, Sep 8 - Thu, Sep 11
BWI
Baltimore
MSO
Missoula
$302 Roundtrip, found 6 days ago
$302
Roundtrip
found 6 days ago
Select United flight, departing Mon, Sep 8 from Baltimore to Missoula, returning Thu, Sep 11, priced at $302 found 6 days ago
Delta
Mon, Sep 22 - Thu, Sep 25
BWI
Baltimore
MSO
Missoula
$303 Roundtrip, found 9 hours ago
$303
Roundtrip
found 9 hours ago
Select Delta flight, departing Mon, Sep 22 from Baltimore to Missoula, returning Thu, Sep 25, priced at $303 found 9 hours ago
Delta
Mon, Sep 8 - Wed, Sep 24
BWI
Baltimore
MSO
Missoula
$304 Roundtrip, found 7 hours ago
$304
Roundtrip
found 7 hours ago
Select Delta flight, departing Mon, Sep 8 from Baltimore to Missoula, returning Wed, Sep 24, priced at $304 found 7 hours ago
Delta
Sun, Sep 28 - Fri, Oct 3
BWI
Baltimore
MSO
Missoula
$305 Roundtrip, found 6 days ago
$305
Roundtrip
found 6 days ago
Select Delta flight, departing Sun, Sep 28 from Baltimore to Missoula, returning Fri, Oct 3, priced at $305 found 6 days ago
Hawaiian Airlines
Mon, Sep 8 - Tue, Sep 9
BWI
Baltimore
MSO
Missoula
$351 Roundtrip, found 6 days ago
$351
Roundtrip
found 6 days ago
Select Hawaiian Airlines flight, departing Mon, Sep 8 from Baltimore to Missoula, returning Tue, Sep 9, priced at $351 found 6 days ago
Alaska Airlines
Thu, Oct 2 - Mon, Oct 6
BWI
Baltimore
MSO
Missoula
$358 Roundtrip, found 5 days ago
$358
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Thu, Oct 2 from Baltimore to Missoula, returning Mon, Oct 6, priced at $358 found 5 days ago

Find the cheapest month to fly from Baltimore (BWI) to Missoula (MSO)

September is typically the cheapest month to fly

From $298 - $795 per traveler.

Graph displaying average flight prices per month

Alternative airports near Missoula

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

Select flight to Missoula Intl. MSO. Cheapest and Closest option available. Average driving time to city center is 8 minutes. Flights from $431
MSO
Missoula Intl.
CheapestClosest
Average driving time to city center8 min
Flights from $431
Flights from Baltimore (BWI) to Missoula (MSO)
Origin airport
Baltimore Washington Intl. Thurgood Marshall
Destination airport
Missoula Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Hawaiian Airlines, United
Roundtrip price
$294
Distance
1942 mi

Baltimore to Missoula Flights

The cheapest times to fly from Baltimore to Missoula

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 Missoula are during the month of September. You can find some of the cheapest flights from Baltimore to Missoula with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Baltimore to Missoula

Sunday is one of the best days to book for cheap flights from Baltimore to Missoula: 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 Missoula

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 Missoula in 2025. You can also book with separate airlines for your outbound and return journeys, from $149 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 Missoula 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 Missoula 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 Missoula Intl. Airport (MSO) cost?
Discover the latest flight deals from BWI to MSO 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 MSO?
The cheapest flights from BWI to MSO 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 MSO?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from BWI to MSO. 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 Missoula Intl. Airport (MSO)?
You'll need to hop on a flight with a layover if you're traveling from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Missoula Intl. Airport (MSO). There are no daily direct flights on this route. However, just filter your search to include one or more stops to find an option that works for you.
What day of the week has the most flights from BWI to MSO?
Friday is usually the busiest day for flights, while Tuesday tends to be the quietest.* Remember that flight schedules can change depending on various factors, such as the time of year and carrier.*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 Missoula Intl. Airport (MSO)?
To avoid potential delays on the Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Missoula Intl. Airport (MSO) route, aim to fly before 3 PM. Departures after this hour have a 22% higher chance of cancellation.**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 Missoula Intl. Airport (MSO) last-minute?
Booking your ticket from BWI to MSO right before your journey is generally more expensive. But if you're flexible with your departure times and dates, you could land a cheap last-minute fare.
Is it cheaper to book a BWI to MSO flight and hotel package?
Compared with arranging hotels and flights separately, booking a BWI to MSO flight and hotel package with Expedia could result in significant savings. What's more, having it all in one place takes the hassle out of travel planning. Simply pick your flights and select from our wide range of hotels, then personalize your trip with other add-ons like activities, tours and car rentals.
Can I cancel or change the date of my flight from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Missoula Intl. Airport (MSO)?
If you reserved your BWI to MSO flight within the last 24 hours, you may be able to cancel or modify it without fees. Depending on the airline and the type of ticket you purchased, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

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*Available to One Key members.