$232 Cheap Flights from Seattle (SEA) to Moline (MLI)

View $232 flight on Fri, Mar 27, 2026Opens in a new window

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

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Cheap Flights from Seattle to Moline (SEA-MLI)

Prices were available within the past 7 days and start at $232 for one-way flights and $309 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Fri, Apr 24 - Sat, May 2
SEA
Seattle
MLI
Moline
$309 Roundtrip, found 22 hours ago
$309
Roundtrip
found 22 hours ago
Select American Airlines flight, departing Fri, Apr 24 from Seattle to Moline, returning Sat, May 2, priced at $309 found 22 hours ago
United
Fri, Apr 24 - Sat, May 2
SEA
Seattle
MLI
Moline
$309 Roundtrip, found 22 hours ago
$309
Roundtrip
found 22 hours ago
Select United flight, departing Fri, Apr 24 from Seattle to Moline, returning Sat, May 2, priced at $309 found 22 hours ago
United
Fri, Apr 24 - Sat, May 2
SEA
Seattle
MLI
Moline
$314 Roundtrip, found 22 hours ago
$314
Roundtrip
found 22 hours ago
Select United flight, departing Fri, Apr 24 from Seattle to Moline, returning Sat, May 2, priced at $314 found 22 hours ago
United
Sat, May 23 - Wed, May 27
SEA
Seattle
MLI
Moline
$324 Roundtrip, found 1 day ago
$324
Roundtrip
found 1 day ago
Select United flight, departing Sat, May 23 from Seattle to Moline, returning Wed, May 27, priced at $324 found 1 day ago
United
Wed, Apr 22 - Wed, Apr 29
SEA
Seattle
MLI
Moline
$325 Roundtrip, found 3 days ago
$325
Roundtrip
found 3 days ago
Select United flight, departing Wed, Apr 22 from Seattle to Moline, returning Wed, Apr 29, priced at $325 found 3 days ago
United
Fri, May 8 - Tue, May 12
SEA
Seattle
MLI
Moline
$326 Roundtrip, found 7 hours ago
$326
Roundtrip
found 7 hours ago
Select United flight, departing Fri, May 8 from Seattle to Moline, returning Tue, May 12, priced at $326 found 7 hours ago
United
Tue, Jun 9 - Mon, Jun 15
SEA
Seattle
MLI
Moline
$327 Roundtrip, found 6 days ago
$327
Roundtrip
found 6 days ago
Select United flight, departing Tue, Jun 9 from Seattle to Moline, returning Mon, Jun 15, priced at $327 found 6 days ago
United
Fri, Apr 10 - Sun, Apr 12
SEA
Seattle
MLI
Moline
$328 Roundtrip, found 1 day ago
$328
Roundtrip
found 1 day ago
Select United flight, departing Fri, Apr 10 from Seattle to Moline, returning Sun, Apr 12, priced at $328 found 1 day ago
Delta
Mon, Jun 8 - Mon, Jun 15
SEA
Seattle
MLI
Moline
$329 Roundtrip, found 4 hours ago
$329
Roundtrip
found 4 hours ago
Select Delta flight, departing Mon, Jun 8 from Seattle to Moline, returning Mon, Jun 15, priced at $329 found 4 hours ago
Alaska Airlines
Wed, Apr 22 - Sat, May 9
SEA
Seattle
MLI
Moline
$404 Roundtrip, found 12 hours ago
$404
Roundtrip
found 12 hours ago
Select Alaska Airlines flight, departing Wed, Apr 22 from Seattle to Moline, returning Sat, May 9, priced at $404 found 12 hours ago

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Alternative airports near Moline

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

Select flight to Quad City Intl. MLI. Cheapest and Closest option available. Average driving time to city center is 5 minutes. Flights from $334
MLI
Quad City Intl.
CheapestClosest
Average driving time to city center5 min
Flights from $334

Find the cheapest month to fly from Seattle (SEA) to Moline (MLI)

February is typically the cheapest month to fly

From $228 - $829 per traveler.

Frequently asked questions

How much does a flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Moline, IL (MLI-Quad City Intl.) cost?
You can find cheap one-way flights from $232 and cheap return flights from $309 Seattle, WA (SEA-Seattle - Tacoma Intl.) to Moline, IL (MLI-Quad City Intl.) with Expedia. One-way flights typically cost between $361 and $1005, and return flights often range between $396 and $1259. 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 Seattle, WA (SEA-Seattle - Tacoma Intl.) to Moline, IL (MLI-Quad City 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 Seattle, WA (SEA-Seattle - Tacoma Intl.) to Moline, IL (MLI-Quad City Intl.)?
February is typically the cheapest month to fly from Seattle (SEA) to Moline (MLI), with average round-trip fares around $424. This price is about 18% lower than the average throughout the year, as February often sees reduced travel demand after the holiday season. Other budget-friendly months to fly from Seattle to Moline include September and October.*Averages based on flights available on Expedia in the last year.
Which airlines fly direct from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Moline, IL (MLI-Quad City Intl.)?
Enter SEA to MLI and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Moline, IL (MLI-Quad City Intl.)?
United is one of the cheapest airlines offering connecting flights from Seattle, WA (SEA) to Moline, IL (MLI), with round-trip tickets starting from around $288 with a layover in Denver Intl. (DEN). 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 Seattle, WA (SEA-Seattle - Tacoma Intl.) to Moline, IL (MLI-Quad City Intl.)?
To find a cheap flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Moline, IL (MLI-Quad City 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 Seattle, WA (SEA-Seattle - Tacoma Intl.) to Moline, IL (MLI-Quad City Intl.)?
The best time to fly from Seattle (SEA) to Moline (MLI) is typically in February or October. In February, you can find return flights for around $424, making it a budget-friendly option. October is also popular, offering a good balance of flight availability and moderate prices, perfect for travelers looking to enjoy the fall scenery.*Prices based on flights available on Expedia in the last year.
What is the earliest flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Moline, IL (MLI-Quad City Intl.)?
The earliest flight from Seattle - Tacoma International Airport (SEA) to Quad City International Airport (MLI) usually departs at around 12:05 AM, operated by American Airlines. This seasonal service is available in February, and an early departure can help you maximize your time in Moline. 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 Seattle, WA (SEA-Seattle - Tacoma Intl.) to Moline, IL (MLI-Quad City Intl.)?
The most popular departure times for flights from Seattle - Tacoma Intl. (SEA) to Quad City Intl. (MLI) are in the early morning, from 6am to 9am. This time window accounts for about 34% of passenger traffic. United Airlines and American Airlines operate flights during this period. Many travelers prefer this timing to start their journey early and enjoy their destination.
How long does it take to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Moline, IL (MLI-Quad City Intl.)?
Flights from SEA to MLI with one stop typically take around 8 hours, 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 Seattle, WA (SEA-Seattle - Tacoma Intl.) to Moline, IL (MLI-Quad City Intl.)?
First class seats are offered on the SEA to MLI route. First class cabins are available on:

  • American Airlines
  • Delta Air Lines
  • United Airlines

How do I earn miles on a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Moline, IL (MLI-Quad City Intl.) flight with Expedia?
It's easy to earn miles on a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Moline, IL (MLI-Quad City 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 Moline from Seattle - Tacoma Intl. (SEA)?
If you're planning to travel to Moline from Seattle - Tacoma Intl. (SEA), you can fly into Quad City Intl. (MLI) Some flights may connect through major hubs like Denver Intl. (DEN), San Francisco Intl. (SFO), Los Angeles Intl. (LAX) before reaching Moline. 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 Seattle, WA (SEA-Seattle - Tacoma Intl.) to Moline, IL (MLI-Quad City Intl.) at the last minute?
Typically, booking a last minute flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Moline, IL (MLI-Quad City 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 Seattle, WA (SEA-Seattle - Tacoma Intl.) to Moline, IL (MLI-Quad City Intl.) flight and hotel package?
Securing a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Moline, IL (MLI-Quad City 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 Seattle, WA (SEA-Seattle - Tacoma Intl.) to Moline, IL (MLI-Quad City Intl.)?
If you booked your Seattle, WA (SEA-Seattle - Tacoma Intl.) to Moline, IL (MLI-Quad City 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
Seattle - Tacoma Intl.
Destination airport
Quad City Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, United
Roundtrip price
$308
Distance
1609 mi

Book with confidence

Seattle to Moline Flights

The cheapest times to fly from Seattle to Moline

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

 

The best time to book a flight from Seattle to Moline

Sunday is one of the best days to book for cheap flights from Seattle to Moline: 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 Seattle to Moline

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 Seattle to Moline in 2026. You can also book with separate airlines for your outbound and return journeys, from $232 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 Seattle to Moline 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 Seattle to Moline 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.

 

Seattle to Moline Flights

*Flight schedules are subject to change.

*Available to One Key members.