$139 Cheap Flights from Missoula (MSO) to Seattle (SEA)
Popular airlines from Missoula Intl. Airport (MSO) to Seattle-Tacoma International Airport (SEA)
Alaska AirlinesAlaska Airlines
DeltaDelta
UnitedUnited
American AirlinesAmerican Airlines
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Cheap Flights from Missoula to Seattle (MSO-SEA)
Alternative airports near Seattle
Prices were available within the past 7 days. Prices and availability are subject to change.
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Missoula (MSO) to Seattle (SEA) at a glance
Travel from Missoula (MSO) to Seattle (SEA) with a range of airlines on this convenient domestic short-haul route. Explore a variety of options, including both full-service and budget carriers, to discover the best flights to Seattle that align with your budget and schedule. Whether you're planning to visit Seattle's iconic landmarks or vibrant neighborhoods, you'll find essential details for your journey from Missoula International Airport to Seattle-Tacoma International Airport.
- Fastest flight duration: around 1h 30m non-stop
- Route distance: roughly 400 miles (645 km)
- Flights per week: around 12 departures on average
- Typical fares (one-way): economy tickets often range from $75–$335, depending on seasonality and how far ahead you book
Flights from Missoula International Airport (MSO) to Seattle - Tacoma International Airport (SEA)
Based on the latest traveler bookings, here are the top airlines favored for flights from Missoula to Seattle, featuring both non-stop and one-stop options. Common layovers include Salt Lake City International Airport (SLC) with approximately a 2-hour wait, Portland International Airport (PDX) at about 1 hour and 15 minutes, and Denver International Airport (DEN) with a 2-hour layover. This variety allows you to mix and match price, overall travel time, and cabin class to find the ideal itinerary for your journey.
- Alaska Airlines: This full-service airline provides both non-stop and one-stop options, with one-way ticket prices generally falling between $80 and $335. It dominates the route with about 96% of departures, and non-stop flights typically last around 1 hour and 30 minutes.
- Hawaiian Airlines: Another full-service option, Hawaiian Airlines offers non-stop flights with one-way fares ranging from $105 to $225. Representing about 2% of departures on this route, the total travel duration is approximately 1 hour and 30 minutes.
- Delta: Delta, a full-service carrier, provides one-stop services with one-way fares usually between $120 and $420. It accounts for around 2% of departures, featuring an in-flight time of 4 hours and an overall journey time of about 5 hours and 30 minutes, including layovers.
Travelers flying from Missoula to Seattle have the option to upgrade their experience with Alaska Airlines, which provides both first-class and business-class service on this route.
Best time to fly from Missoula (MSO) to Seattle (SEA)
The most popular months for travelers flying from Missoula to Seattle are January, February, and April, when peak temperatures in Seattle reach up to 48.6°F in April. If you prefer quieter travel, consider October, the least busy and relatively cheaper time to visit with fewer crowds and temperatures around 52.7°F. For better deals, December usually offers the lowest average one-way fare around $145. Flight availability peaks in July, with approximately 15 flights per week, making it easier to find convenient departure times. March has the fewest flights, with approximately 10 flights per week.
- Cheapest time to fly: December usually offers good deals with average one-way fare around $145, roughly 12% cheaper than the yearly average.
- Another budget-friendly time to fly: September typically offers an average one-way fare of around $157.
- Most flight options: July has the highest number of flights from Missoula to Seattle, with approximately 15 flights per week, giving you more flexibility in scheduling your trip.
| Month | Temperature | Demand | Weekly Flights | Average one-way Fare |
| January | 40.3°F (4.6°C) | Slightly High | 11 | $173 |
| February | 40.5°F (4.7°C) | Slightly High | 12 | $169 |
| March | 43.9°F (6.6°C) | Average | 10 | $175 |
| April | 48.6°F (9.2°C) | Slightly High | 11 | $168 |
| May | 55.8°F (13.2°C) | Average | 11 | $164 |
| June | 61.0°F (16.1°C) | Slightly Low | 12 | $169 |
| July | 67.1°F (19.5°C) | Average | 15 | $170 |
| August | 67.5°F (19.7°C) | Average | 13 | $162 |
| September | 61.3°F (16.3°C) | Average | 11 | $157 |
| October | 52.7°F (11.5°C) | Slightly Low | 13 | $162 |
| November | 44.2°F (6.8°C) | Slightly Low | 12 | $172 |
| December | 39.2°F (4.0°C) | Average | 13 | $145 |
*Average one-way fare is based on Expedia flight booking data from January 2025 to April 2026 for the specified route and travel class and may change depending on availability, dates, and demand.
Alternative route from Missoula (MSO) to Seattle (SEA)
- Missoula to Seattle (MSO-BFI): Boeing Field Airport (BFI) is located approximately 6 miles from Seattle - Tacoma International Airport (SEA), providing convenient access for travelers.
How to find the best prices for flights from Missoula (MSO) to Seattle (SEA)
Getting some of the best deals on flights from Missoula to Seattle is all about timing and flexibility. Here are some key tips to help you save:
- Best times to book and fly: cheaper fares are usually found when booking at least two months in advance, although most travelers tend to book between two to eight weeks ahead. Afternoon departures from 12 PM to 6 PM are generally more affordable and popular, while flying on Saturday typically offers lower prices, even though Friday remains the most favored travel day.
- Set up price alerts: stay updated on price changes by using Expedia's Price Tracker. Receive alerts when fares drop for your selected route.
- Bundle and save: bundle your flight and hotel to save on Expedia, or unlock a hotel deal after booking your flight.*
- Compare flight options: use Expedia's search tool to compare airlines, routes, direct vs. non-direct flights, and flight times. You can also sort by price to find the most affordable options.
- Stay flexible with dates: being open to different travel days can sometimes help you find better prices on flights and hotels.
- Think about luggage: nowadays, it's important to check the airline's baggage policies to find the best value. That may be paying for an additional carry-on bag or booking a ticket with checked luggage included. Either way, double-check your allowance before confirming your booking to avoid excess baggage fees at the airport.
*Members only. Savings vary and are not available on all bundles. Select hotels.
Arriving at Seattle - Tacoma International Airport from Missoula International Airport
Seattle welcomes travelers from Missoula with a range of transport options based on price, convenience, and proximity. Seattle city center is approximately a 20-minute drive (covering about 14 miles) from Seattle - Tacoma International Airport, depending on traffic. Here's how to reach Seattle efficiently:
- Hotel transfer: Transfers offer a convenient way to reach your hotel in Seattle, with private rides that can be arranged in advance.
- Car rental: Renting a car from Seattle - Tacoma International Airport is a great option if you plan to explore and sightsee beyond the city. Browse cheap car rentals at Seattle - Tacoma International Airport on Expedia.
- Taxi/ride-hailing: Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival.
- Public transportation: From Seattle - Tacoma International Airport, SeaTac/Airport Station, a metro station, is located about 0.3 miles from the airport and can be reached on foot, while Tukwila Station, a train station, is situated approximately 4.3 miles away and is best accessed by car.
Missoula to Seattle Flights
The cheapest times to fly from Missoula to Seattle
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 Missoula to Seattle are during the month of February. You can find some of the cheapest flights from Missoula to Seattle with Expedia's search tool and vast selection of airlines.
The best time to book a flight from Missoula to Seattle
Sunday is one of the best days to book for cheap flights from Missoula to Seattle: 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 Missoula to Seattle
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 Missoula to Seattle in 2026. You can also book with separate airlines for your outbound and return journeys, from $139 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 Missoula to Seattle 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 Missoula to Seattle 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 Missoula, MT (MSO-Missoula Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) cost?
You can find cheap one-way flights from $139 and cheap return flights $254 Missoula, MT (MSO-Missoula Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) with Expedia. One-way flights generally range between $157 and $959, and roundtrip flights usually range from $247 to $1071. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Missoula, MT (MSO-Missoula Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) ticket fares go up or down.
*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Missoula, MT (MSO-Missoula Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The cheapest month to fly from MSO to SEA is February when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you're able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Missoula, MT (MSO-Missoula Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
There are 2 airlines offering direct flights from MSO to SEA:
- Hawaiian Airlines operates around 21 direct flights from MSO to SEA every week
- Qatar Airways operates around 7 direct flights from MSO to SEA every week
What is the cheapest airline that flies from Missoula, MT (MSO-Missoula Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
American Airlines is one of the cheapest airlines offering connecting flights from Missoula (MSO) to Seattle (SEA), with round-trip tickets starting from around $272.37. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.
*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Missoula, MT (MSO-Missoula Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
To find a cheap flight from Missoula, MT (MSO-Missoula Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from Missoula, MT (MSO-Missoula Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The best airline to fly with from Missoula, MT (MSO) to Seattle, WA (SEA) will differ from traveler to traveler. If you like to fly early, Alaska Airlines offers early morning flights. If price is the most important factor, Alaska Airlines typically offers the lowest fares. Alaska Airlines offers the most daily flights from Missoula to Seattle, which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from Missoula, MT (MSO-Missoula Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from Missoula, MT (MSO-Missoula Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
On average, there are around 1 nonstop flights per day from Missoula Intl. (MSO) to Seattle - Tacoma Intl. (SEA). For more options, look at flights that include layovers.
What is the earliest flight from Missoula, MT (MSO-Missoula Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The earliest flight from Missoula, MT (Missoula Intl.) to Seattle, WA (Seattle - Tacoma Intl.) typically leaves at around 5:00 AM, operated by Delta. This seasonal service is available in January, allowing you to maximize your time in Seattle. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Missoula, MT (MSO-Missoula Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The most popular departure times for flights from Missoula (MSO) to Seattle (SEA) are in the early afternoon, from 12pm to 3pm. About 38% of passengers prefer this time window. Many travelers like this timing as it gives them the chance to enjoy a leisurely morning before their flight.
How long does it take to fly from Missoula, MT (MSO-Missoula Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
Flying nonstop from MSO to SEA takes around 1 hour 50 minutes, with the route covering approximately 387 miles. Flights with a layover typically take 6 hours longer than direct options. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Missoula, MT (MSO-Missoula Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
First class seats are offered on the MSO to SEA route. First class cabins are available on:
- United Airlines
- Delta Air Lines
- American Airlines
How much is a business class flight from Missoula, MT (MSO-Missoula Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
A direct, return business class ticket from Missoula (MSO) to Seattle (SEA) typically costs between $488 - $863. Prices often fluctuate based on seasonality and how early you book. You may also be able to find a cheaper business class journey between Missoula, MT (MSO-Missoula Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) if you opt for a connecting flight.
*Prices based on flights available on Expedia in the last year.
How do I earn miles on a Missoula, MT (MSO-Missoula Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight with Expedia?
It's easy to earn miles on a Missoula, MT (MSO-Missoula Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.
*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Seattle from Missoula Intl. (MSO)?
If you're planning to travel to Seattle from Missoula Intl. (MSO), you can fly into Seattle - Tacoma Intl. (SEA) Some flights may connect through major hubs like Salt Lake City Intl. (SLC), Denver Intl. (DEN), San Francisco Intl. (SFO) before reaching Seattle. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Missoula, MT (MSO-Missoula Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) at the last minute?
Typically, booking a last minute flight from Missoula, MT (MSO-Missoula Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Missoula, MT (MSO-Missoula Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight and hotel package?
Securing a Missoula, MT (MSO-Missoula Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) Seattle Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Missoula, MT (MSO-Missoula Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
If you booked your Missoula, MT (MSO-Missoula Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, 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.
Travel information
Origin airport | Missoula Intl. Airport |
|---|---|
Destination airport | Seattle-Tacoma International Airport |
Distance | 387 miles away |
Airlines serving | Alaska Airlines, Delta, United, American Airlines |
Popular airline | Alaska Airlines |
Roundtrip price | $254 |
Average flight time | 1 hour 40 mins |