CA $358 Cheap Flights from Moline (MLI) to Seattle (SEA)

View CA $358 flight on Sat, Sep 19, 2026Opens in a new window

Popular airlines from Quad City Intl. Airport (MLI) to Seattle-Tacoma International Airport (SEA)

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Cheap flights from Moline (MLI) to Seattle (SEA)

Prices were available within the past 7 days and start at CA $358 for one-way flights and CA $563 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Wed, Sep 16 - Tue, Sep 29
MLI
Moline
SEA
Seattle
CA $563 Roundtrip, found 3 days ago
CA $563
Roundtrip
found 3 days ago
Select Delta flight, departing Wed, Sep 16 from Moline to Seattle, returning Tue, Sep 29, priced at CA $563 found 3 days ago
Delta
Wed, Sep 16 - Tue, Sep 22
MLI
Moline
SEA
Seattle
CA $597 Roundtrip, found 3 days ago
CA $597
Roundtrip
found 3 days ago
Select Delta flight, departing Wed, Sep 16 from Moline to Seattle, returning Tue, Sep 22, priced at CA $597 found 3 days ago
American Airlines
Thu, Sep 17 - Tue, Sep 29
MLI
Moline
SEA
Seattle
CA $612 Roundtrip, found 3 days ago
CA $612
Roundtrip
found 3 days ago
Select American Airlines flight, departing Thu, Sep 17 from Moline to Seattle, returning Tue, Sep 29, priced at CA $612 found 3 days ago
United
Fri, Sep 18 - Tue, Sep 29
MLI
Moline
SEA
Seattle
CA $612 Roundtrip, found 3 days ago
CA $612
Roundtrip
found 3 days ago
Select United flight, departing Fri, Sep 18 from Moline to Seattle, returning Tue, Sep 29, priced at CA $612 found 3 days ago
United
Fri, Sep 18 - Sat, Sep 26
MLI
Moline
SEA
Seattle
CA $619 Roundtrip, found 3 days ago
CA $619
Roundtrip
found 3 days ago
Select United flight, departing Fri, Sep 18 from Moline to Seattle, returning Sat, Sep 26, priced at CA $619 found 3 days ago
American Airlines
Sat, Sep 19 - Sun, Sep 20
MLI
Moline
SEA
Seattle
CA $629 Roundtrip, found 3 days ago
CA $629
Roundtrip
found 3 days ago
Select American Airlines flight, departing Sat, Sep 19 from Moline to Seattle, returning Sun, Sep 20, priced at CA $629 found 3 days ago
Alaska Airlines
Thu, Sep 17 - Wed, Sep 23
MLI
Moline
SEA
Seattle
CA $639 Roundtrip, found 3 days ago
CA $639
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Thu, Sep 17 from Moline to Seattle, returning Wed, Sep 23, priced at CA $639 found 3 days ago
American Airlines
Sat, Sep 19 - Sun, Sep 20
MLI
Moline
SEA
Seattle
CA $684 Roundtrip, found 3 days ago
CA $684
Roundtrip
found 3 days ago
Select American Airlines flight, departing Sat, Sep 19 from Moline to Seattle, returning Sun, Sep 20, priced at CA $684 found 3 days ago
Delta
Wed, Sep 16 - Sun, Sep 27
MLI
Moline
SEA
Seattle
CA $689 Roundtrip, found 3 days ago
CA $689
Roundtrip
found 3 days ago
Select Delta flight, departing Wed, Sep 16 from Moline to Seattle, returning Sun, Sep 27, priced at CA $689 found 3 days ago
American Airlines
Sat, Sep 19 - Sun, Sep 20
MLI
Moline
SEA
Seattle
CA $716 Roundtrip, found 3 days ago
CA $716
Roundtrip
found 3 days ago
Select American Airlines flight, departing Sat, Sep 19 from Moline to Seattle, returning Sun, Sep 20, priced at CA $716 found 3 days ago

Frequently asked questions

What is the cheapest month to fly from Moline, IL (MLI-Quad City Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
April is typically the cheapest month to fly from Moline, IL (MLI-Quad City Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.), with average round-trip fares of approximately 920 CAD. This is about 22% lower than the average price throughout the year. April often sees lower prices as it's outside of peak holiday seasons and before the summer travel rush. Other cheap months to fly from Moline, IL (MLI-Quad City Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) include January and March.
How do I find cheap flights from Moline, IL (MLI-Quad City Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
To find a cheap flight from Moline, IL (MLI-Quad City 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 time to fly from Moline, IL (MLI-Quad City Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
Based on booking data from the past year, the cheapest months to fly from Moline, IL (MLI-Quad City Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) are typically April and January, with average round-trip flight prices around 920 CAD. While these months offer the best value, they might not always align with the most popular travel times. For a balance of good prices and potentially more flight options, consider checking flights during these periods.
How many flights per day from Moline, IL (MLI-Quad City Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
There are approximately 21 connecting flights per day from Moline, IL (MLI-Quad City Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.). Some common connection points include O'Hare Intl. (ORD), Hartsfield-Jackson Atlanta Intl. (ATL), and Dallas-Fort Worth Intl. (DFW).
What is the earliest flight from Moline, IL (MLI-Quad City Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The earliest flight from Moline, IL (MLI-Quad City Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) typically departs at approximately 5:00 AM local time. This service is operated by American Airlines and is seasonal, active only in May. An early departure like this can help you maximize your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Moline, IL (MLI-Quad City Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
You'll typically find the most flights from Moline, IL (MLI-Quad City Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) on a Thursday, with around 15 flights available. This gives you a good selection of options for your travel plans. Flight schedules are consistent throughout the week, so you'll find similar availability on other days. Major airlines on this route include American Airlines, United Airlines, and Delta Air Lines.
What are the most popular departure times for flights from Moline, IL (MLI-Quad City Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The most popular departure times for flights from Moline, IL (MLI-Quad City Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) are in the early morning, from 6am to 9am. This accounts for around 33% of total traffic. Many major carriers, including United Airlines and American Airlines, offer flights during this window. Many travelers prefer these early morning flights as they allow you to arrive at your destination with plenty of time left in the day.
How long does it take to fly from Moline, IL (MLI-Quad City Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
Flights from MLI to SEA with one stop typically take around 8 hours 50 minutes, covering approximately 1,610 miles. 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 Moline, IL (MLI-Quad City Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
Select the "Business class" and "First class" filters when looking for MLI to SEA flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Moline, IL (MLI-Quad City Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight with Expedia?
It's easy to earn miles on a Moline, IL (MLI-Quad City 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 Quad City Intl. (MLI)?
From Quad City Intl. (MLI), you can fly directly into Seattle - Tacoma Intl. (SEA) to reach Seattle. Some flights may connect through major hubs like O'Hare Intl. (ORD), Hartsfield-Jackson Atlanta Intl. (ATL), Dallas-Fort Worth Intl. (DFW) 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 Moline, IL (MLI-Quad City Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) at the last minute?
Typically, booking a last minute flight from Moline, IL (MLI-Quad City 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 Moline, IL (MLI-Quad City Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight and hotel package?
Securing a Moline, IL (MLI-Quad City Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight and hotel package 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 Moline, IL (MLI-Quad City Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
If you booked your Moline, IL (MLI-Quad City 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
Quad City Intl.
Destination airport
Seattle - Tacoma Intl.
Roundtrip price
CA $563
Distance
2575 km

Book with confidence

Moline to Seattle Flights

The easy way to book your flights from Moline to Seattle 

With Expedia, it’s simple to find and book flights to Seattle from Moline whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 20 airlines that cover this route. There are nonstop flights to Seattle - Tacoma Intl., too.  

Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Moline to Seattle today, tomorrow, or this week.  

 

Save dollars with cheap flights from Quad City Intl., MLI to Seattle - Tacoma Intl., SEA 

Sort your search results by price to find great deals on your flight from Moline to Seattle—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Seattle from Moline currently is just CA $563 rising to CA $716.  

Here are more money-saving tips: 

  • Fly in September when flight prices are normally at their lowest 
  • Book about a month to 6 weeks before you travel for the best prices to Seattle  
  • Avoid peak season and weekends when flights can cost more
  • Early morning and late-night flights are sometimes cheaper, so try varying your travel times 
  • One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free! 

 

Reasons to choose Expedia for your flight to Seattle from Moline 

Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to Seattle with Expedia today.

Moline to Seattle Flights

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