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Quincy

$604+ Cheap flights from Seattle to Quincy, IL (SEA - UIN)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/25. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — UIN
Aug 29 — Sep 51
Sat 8/29
Sat 9/5
1 adult, Economy
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Cheap flight deals from Seattle to Quincy

Cheapest flights from Seattle to Quincy
Explore the most affordable flight options available from Seattle to Quincy. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 30, 2026.

This Booking.com deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/255:51 pm
SEA
-
UIN
1 stop16h 49m
Multiple Airlines
Sat 8/293:25 pm
UIN
-
SEA
1 stop19h 05m
Multiple Airlines
Deal found 7/29$604

Find flight deals from Seattle to Quincy

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Quincy (UIN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 30, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$604
(Booking.com)
Provider with most accurate pricing for Seattle/Tacoma Intl-Quincy Regional flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Quincy Regional flights.
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From Seattle/Tacoma Intl to Quincy Regional
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Quincy that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 30, 2026.
Use the filters below to find and compare flights from Seattle to Quincy that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

SeattleQuincy

SEA - UIN

SEAUIN

Seattle/Tacoma Intl

Tue 8/25

5:51 pm-12:40 pm

1 stop16h 49m

Quincy Regional

Sat 8/29

3:25 pm-8:30 am

1 stop19h 05m

$604

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Sorted by cheapest first
  • Most accurate provider: When it comes to deals on Seattle-Quincy, Illinois flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Quincy, Illinois flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Quincy, Illinois flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Quincy, Illinois flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Quincy, Illinois flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Seattle to Quincy

Have a flexible travel schedule? Discover the best time to fly to Quincy from Seattle with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Quincy. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • Can I find deals for flights from Seattle to Quincy that include hotel bookings?

    Yes. In addition to deals on Seattle to Quincy flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Quincy?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Quincy.

  • Can I find deals for business class flights from Seattle to Quincy?

    Yes. Cheapflights offers flight deals from Seattle to Quincy by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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