$171 Cheap Flights from Seattle (SEA) to Quincy (UIN)

View $171 flight on Wed, Jan 21, 2026Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Quincy, IL (UIN-Quincy Regional-Baldwin Field)

Cheap Flights from Seattle to Quincy (SEA-UIN)

Prices were available within the past 7 days and start at $171 for one-way flights and $369 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Mon, Oct 20 - Wed, Oct 22
SEA
Seattle
UIN
Quincy
$369 Roundtrip, found 12 hours ago
$369
Roundtrip
found 12 hours ago
Select United flight, departing Mon, Oct 20 from Seattle to Quincy, returning Wed, Oct 22, priced at $369 found 12 hours ago
United
Tue, Oct 14 - Fri, Oct 31
SEA
Seattle
UIN
Quincy
$404 Roundtrip, found 11 hours ago
$404
Roundtrip
found 11 hours ago
Select United flight, departing Tue, Oct 14 from Seattle to Quincy, returning Fri, Oct 31, priced at $404 found 11 hours ago
United
Tue, Nov 11 - Wed, Nov 12
SEA
Seattle
UIN
Quincy
$410 Roundtrip, found 1 day ago
$410
Roundtrip
found 1 day ago
Select United flight, departing Tue, Nov 11 from Seattle to Quincy, returning Wed, Nov 12, priced at $410 found 1 day ago
United
Mon, Oct 20 - Tue, Oct 21
SEA
Seattle
UIN
Quincy
$414 Roundtrip, found 12 hours ago
$414
Roundtrip
found 12 hours ago
Select United flight, departing Mon, Oct 20 from Seattle to Quincy, returning Tue, Oct 21, priced at $414 found 12 hours ago
United
Mon, Oct 13 - Fri, Oct 31
SEA
Seattle
UIN
Quincy
$415 Roundtrip, found 11 hours ago
$415
Roundtrip
found 11 hours ago
Select United flight, departing Mon, Oct 13 from Seattle to Quincy, returning Fri, Oct 31, priced at $415 found 11 hours ago
Alaska Airlines
Sat, Nov 8 - Sun, Nov 23
SEA
Seattle
UIN
Quincy
$421 Roundtrip, found 11 hours ago
$421
Roundtrip
found 11 hours ago
Select Alaska Airlines flight, departing Sat, Nov 8 from Seattle to Quincy, returning Sun, Nov 23, priced at $421 found 11 hours ago
United
Sat, Nov 1 - Wed, Nov 19
SEA
Seattle
UIN
Quincy
$428 Roundtrip, found 11 hours ago
$428
Roundtrip
found 11 hours ago
Select United flight, departing Sat, Nov 1 from Seattle to Quincy, returning Wed, Nov 19, priced at $428 found 11 hours ago
Alaska Airlines
Fri, Oct 31 - Wed, Nov 19
SEA
Seattle
UIN
Quincy
$430 Roundtrip, found 11 hours ago
$430
Roundtrip
found 11 hours ago
Select Alaska Airlines flight, departing Fri, Oct 31 from Seattle to Quincy, returning Wed, Nov 19, priced at $430 found 11 hours ago
American Airlines
Fri, Nov 21 - Tue, Nov 25
SEA
Seattle
UIN
Quincy
$432 Roundtrip, found 6 days ago
$432
Roundtrip
found 6 days ago
Select American Airlines flight, departing Fri, Nov 21 from Seattle to Quincy, returning Tue, Nov 25, priced at $432 found 6 days ago
Alaska Airlines
Mon, Nov 10 - Sun, Nov 23
SEA
Seattle
UIN
Quincy
$434 Roundtrip, found 11 hours ago
$434
Roundtrip
found 11 hours ago
Select Alaska Airlines flight, departing Mon, Nov 10 from Seattle to Quincy, returning Sun, Nov 23, priced at $434 found 11 hours ago

Alternative airports near Quincy

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

Select flight to Quincy Regional-Baldwin Field UIN. Cheapest and Closest option available. Average driving time to city center is 18 minutes. Flights from $404
UIN
Quincy Regional-Baldwin Field
CheapestClosest
Average driving time to city center18 min
Flights from $404

Frequently asked questions

How much does a flight from Seattle - Tacoma Intl. Airport (SEA) to Quincy Regional-Baldwin Field Airport (UIN) cost?
Get a cheap one-way flight from $171 or cheap return flight from $369 from Seattle - Tacoma Intl. Airport (SEA) to Quincy Regional-Baldwin Field Airport (UIN) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Seattle - Tacoma Intl. Airport (SEA) to Quincy Regional-Baldwin Field Airport (UIN)?
Planning your trip for October is a great way to save, as it's the cheapest month for flights between SEA and UIN. You'll often find the lowest prices during the off-season.
What is the cheapest airline that flies from Seattle - Tacoma Intl. Airport (SEA) to Quincy Regional-Baldwin Field Airport (UIN)?
To find the cheapest airline flying from SEA to UIN, use Expedia's filter tool. Tailor your search based on what's important to you, such as preferred carriers and flight duration. You can then sort your results by "Price (lowest to highest)" to discover the cheapest flight right away.
How many flights per day from Seattle - Tacoma Intl. Airport (SEA) to Quincy Regional-Baldwin Field Airport (UIN)?
Nonstop flights from Seattle - Tacoma Intl. Airport (SEA) to Quincy Regional-Baldwin Field Airport (UIN) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filters. Enter your dates and select either "1 Stop" or "2+ Stops."
What day of the week has the most flights from SEA to UIN?
Friday is usually the busiest day for flights, while Tuesday is often the quietest.* Keep in mind that flight schedules can vary based on various factors, including the time of year and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Seattle - Tacoma Intl. Airport (SEA) to Quincy Regional-Baldwin Field Airport (UIN)?
Book a flight from Seattle - Tacoma Intl. Airport (SEA) to Quincy Regional-Baldwin Field Airport (UIN) that leaves before 3 PM to reduce the risk of cancellations and delays. Departures after this time have a 22% higher chance of being canceled, on average.**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 Seattle - Tacoma Intl. Airport (SEA) to Quincy Regional-Baldwin Field Airport (UIN) last-minute?
Last-minute fares from SEA to UIN are typically more expensive. To secure the best prices, start looking for flights well in advance. That being said, if you're flexible with your travel dates, you may find a cheap ticket just before your departure.
Is it cheaper to book a SEA to UIN flight and hotel package?
Compared with arranging hotels and flights separately, booking a SEA to UIN flight and hotel package with Expedia could lead to significant savings. Better still, having everything in one place will take the hassle out of planning your trip. Just secure your flights and choose from our wide range of stays, then customize your trip with other add-ons like tours, car rentals and activities.
Can I cancel or change the date of my flight from Seattle - Tacoma Intl. Airport (SEA) to Quincy Regional-Baldwin Field Airport (UIN)?
It's generally possible to reschedule or cancel your SEA to UIN flight. However, for bookings made more than 24 hours ago, additional charges may apply. Check your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find further details on our Customer Service portal.

Travel information

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
Quincy Regional-Baldwin Field
Roundtrip price
$369
Distance
1625 mi

Book with confidence

Book with confidence

Seattle to Quincy Flights

The cheapest times to fly from Seattle to Quincy

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

 

The best time to book a flight from Seattle to Quincy

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

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 Quincy in 2025. You can also book with separate airlines for your outbound and return journeys, from $171 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 Quincy 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 Quincy 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 Quincy Flights

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*Available to One Key members.