$201 Cheap United flights Missoula (MSO) to Baltimore (BWI)

View $201 flight on Tue, Jun 9, 2026Opens in a new window

$201 Cheap United flights Missoula (MSO) to Baltimore (BWI)

Prices were available within the past 7 days and start at $201 for one-way flights and $407 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Mon, Sep 8 - Fri, Sep 12
MSO
Missoula
BWI
Baltimore
$407 Roundtrip, found 6 days ago
$407
Roundtrip
found 6 days ago
Select United flight, departing Mon, Sep 8 from Missoula to Baltimore, returning Fri, Sep 12, priced at $407 found 6 days ago
United
Sat, Sep 27 - Tue, Oct 7
MSO
Missoula
BWI
Baltimore
$409 Roundtrip, just found
$409
Roundtrip
just found
Select United flight, departing Sat, Sep 27 from Missoula to Baltimore, returning Tue, Oct 7, priced at $409 just found
United
Sat, Sep 27 - Tue, Oct 7
MSO
Missoula
BWI
Baltimore
$409 Roundtrip, just found
$409
Roundtrip
just found
Select United flight, departing Sat, Sep 27 from Missoula to Baltimore, returning Tue, Oct 7, priced at $409 just found
United
Wed, Sep 17 - Wed, Sep 24
MSO
Missoula
BWI
Baltimore
$411 Roundtrip, found 1 day ago
$411
Roundtrip
found 1 day ago
Select United flight, departing Wed, Sep 17 from Missoula to Baltimore, returning Wed, Sep 24, priced at $411 found 1 day ago
United
Sat, Oct 11 - Sat, Oct 18
MSO
Missoula
BWI
Baltimore
$413 Roundtrip, found 2 days ago
$413
Roundtrip
found 2 days ago
Select United flight, departing Sat, Oct 11 from Missoula to Baltimore, returning Sat, Oct 18, priced at $413 found 2 days ago
United
Fri, Sep 12 - Mon, Sep 15
MSO
Missoula
BWI
Baltimore
$416 Roundtrip, found 3 days ago
$416
Roundtrip
found 3 days ago
Select United flight, departing Fri, Sep 12 from Missoula to Baltimore, returning Mon, Sep 15, priced at $416 found 3 days ago
Flights from Missoula (MSO) to Baltimore (BWI)
Origin airport
Missoula Intl.
Destination airport
Baltimore Washington Intl. Thurgood Marshall
Airlines serving
Alaska Airlines, American Airlines, Delta, Hawaiian Airlines, United
Popular airline
Alaska Airlines
Distance
1942 mi

Frequently asked questions

How much is a United Airlines flight from Missoula Intl. Airport (MSO) to Baltimore Washington Intl. Thurgood Marshall Airport (BWI)?
You'll find cheap return United Airlines flights from $407 from MSO to BWI by organizing your results from "Price (lowest to highest)" on Expedia. Or look for options from $201 for a one-way trip.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from MSO to BWI with United Airlines?
January is one of the least expensive months to jet off to Baltimore with United Airlines. You could also find excellent prices on one-way and return tickets in February.
What is the cheapest time to book flights from Missoula Intl. Airport (MSO) to Baltimore Washington Intl. Thurgood Marshall Airport (BWI) with United Airlines?
Look for affordable United Airlines flights from Missoula Intl. Airport (MSO) to Baltimore Washington Intl. Thurgood Marshall Airport (BWI) one to three months ahead of your departure. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. No matter the fare class and itinerary, the best day of the week to book a domestic flight is usually Sunday and the most expensive is typically Monday. Passengers who book on a Sunday can save 6% on average compared to those who book their travel on a Monday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does United Airlines fly nonstop from Missoula Intl. Airport (MSO) to Baltimore Washington Intl. Thurgood Marshall Airport (BWI)?
To figure out if there's a direct trip from MSO to BWI with United Airlines or any other carriers, check the "Nonstop" filter when searching for flights.
What is the earliest United Airlines flight from MSO to BWI?
Search United Airlines's earliest flights from MSO to BWI by checking our "Morning" and "Early Morning" filters. Not only will you arrive sooner, early departures also experience 20% fewer cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does United Airlines fly into in Baltimore?
United Airlines flights from Missoula Intl. Airport (MSO) to Baltimore touch down at Baltimore Washington Intl. Thurgood Marshall Airport (BWI). This is the main gateway here.
Why fly with United Airlines from MSO to BWI?
Travel from MSO to BWI with United Airlines and you'll enjoy a host of benefits starting with a rewarding loyalty program. When you book through Expedia as a United Mileage Plus and One Key™ member, you could also earn OneKeyCash™* to redeem on select future travel purchases.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my United Airlines flight from Missoula Intl. Airport (MSO) to Baltimore Washington Intl. Thurgood Marshall Airport (BWI)?
Changes are generally free within 24 hours of booking, but your airline may charge a fee after that. For further details about modifying your reservation, check out your "Trips," select your flight and click on "Manage Booking." If you'd like the flexibility to change your plans without extra charges, apply the "Changes included" or "No cancel fee" filter when planning your next trip.

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*Available to One Key members.