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Peoria

$270+ Cheap flights from Seattle to Peoria, IL (SEA - PIA)

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 11/14. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — PIA
Oct 29 — Nov 51
Wed 10/29
Wed 11/5
1 adult, Economy
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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Greater Peoria are usually found in April or February, booked 78 days in advance, depart on a Saturday or Tuesday and return on a Wednesday

Cheap flight deals from Seattle to Peoria

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Peoria (PIA). 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 September 29, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$270
(American Airlines)

Popular in

November

Cheapest in

April

Average price

$378
Provider with most accurate pricing for Seattle/Tacoma Intl-Greater Peoria flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Greater Peoria flights.
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From Seattle/Tacoma Intl to Greater Peoria
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Highest demand for flights based on searches. 3% potential increase in price ($15 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Seattle to Peoria

Cheapest flights from Seattle to Peoria
Explore the most affordable flight options available from Seattle to Peoria. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 29, 2025.

This American Airlines deal was found by Cheapflights users on 9/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/1412:59 amSEA - PIA
1 stop6h 56mAmerican Airlines
Thu 11/205:00 amPIA - SEA
1 stop9h 53mAmerican Airlines
Deal found 9/29$270
This American Airlines deal was found by Cheapflights users on 9/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/152:52 pmSEA - PIA
1 stop6h 29mAmerican Airlines
Sat 10/184:10 pmPIA - SEA
1 stop8h 46mAmerican Airlines
Deal found 9/27$295
This United Airlines deal was found by Cheapflights users on 9/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/156:13 amSEA - PIA
2 stops13h 18mUnited Airlines
Thu 11/201:20 pmPIA - SEA
1 stop7h 32mUnited Airlines
Deal found 9/29$365
This United Airlines deal was found by Cheapflights users on 9/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/156:35 amSEA - PIA
2 stops12h 52mUnited Airlines
Sat 10/186:55 amPIA - SEA
1 stop6h 36mUnited Airlines
Deal found 9/27$390
This American Airlines deal was found by Cheapflights users on 9/28. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/1711:24 pmSEA - PIA
1 stop9h 22mAmerican Airlines
Wed 10/227:00 amPIA - SEA
1 stop9h 46mAmerican Airlines
Deal found 9/28$419
This United Airlines deal was found by Cheapflights users on 9/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/171:57 pmSEA - PIA
1 stop6h 18mUnited Airlines
Wed 10/226:00 amPIA - SEA
2 stops13h 53mUnited Airlines
Deal found 9/28$430
This American Airlines deal was found by Cheapflights users on 9/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/21:30 pmSEA - PIA
1 stop7h 28mAmerican Airlines
Wed 10/86:01 amPIA - SEA
1 stop9h 45mAmerican Airlines
Deal found 9/27$454

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Peoria 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 September 29, 2025.
Use the filters below to find and compare flights from Seattle to Peoria that are best for you.

Fly from

Seattle

Fly to

Peoria

Route

Depart

Return

Price

SeattlePeoria

SEA - PIA

SEAPIA

Seattle/Tacoma Intl

Sat 11/15

5:24 am-3:47 pm

1 stop8h 23m

Greater Peoria

Thu 11/20

4:23 pm-12:58 am

1 stop10h 35m

$270

SeattlePeoria

SEA - PIA

SEAPIA

Seattle/Tacoma Intl

Wed 10/15

2:52 pm-11:21 pm

1 stop6h 29m

Greater Peoria

Sat 10/18

4:10 pm-10:56 pm

1 stop8h 46m

$295

SeattlePeoria

SEA - PIA

SEAPIA

Seattle/Tacoma Intl

Sat 11/15

5:20 pm-10:16 am

2 stops14h 56m

Greater Peoria

Thu 11/20

5:23 pm-10:28 pm

1 stop7h 05m

$365

SeattlePeoria

SEA - PIA

SEAPIA

Seattle/Tacoma Intl

Wed 10/15

6:35 am-9:27 pm

2 stops12h 52m

Greater Peoria

Sat 10/18

6:55 am-11:31 am

1 stop6h 36m

$390

SeattlePeoria

SEA - PIA

SEAPIA

Seattle/Tacoma Intl

Fri 10/17

11:24 pm-10:46 am

1 stop9h 22m

Greater Peoria

Wed 10/22

7:00 am-2:46 pm

1 stop9h 46m

$419

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/27

Compare providers for flights from Seattle to Peoria

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Peoria in September.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Seattle-Peoria, Illinois flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Peoria, Illinois flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Peoria, Illinois flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Peoria, 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-Peoria, 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 Peoria

Have a flexible travel schedule? Discover the best time to fly to Peoria 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.

Cheapflights Insights

Everything you need to know about your flight from Seattle to Peoria

How far ahead should I book a flight from Seattle to Peoria, Illinois?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Peoria. Price data was last updated on September 26, 2025.

The best time to book flights from Seattle to Peoria, Illinois is 78 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Seattle to Peoria, Illinois?

Currently, August is the cheapest month in which you can book a flight from Seattle to Peoria, Illinois (average of $318). Flying from Seattle to Peoria, Illinois in December is currently the most expensive (average of $421). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Peoria

Get insights into the airlines that provide service to Peoria. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Peoria. Reviews last updated September 29, 2025.
Peruse reviews from past customers who have flown with United Airlines and American Airlines from Seattle to Peoria to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,924 reviews

Crew

8.1

Overall

7.4

Entertainment

7.1

Food

6.6

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
United Airlines
7.4
Good
8,924 reviews
United Airlines
7.4
Good
8,924 reviews

Crew

8.1

Overall

7.4

Entertainment

7.1

Food

6.6

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,924 reviews

Crew

8.1

Overall

7.4

Entertainment

7.1

Food

6.6

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

Related info for your journey

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

  • How long is the flight from Seattle to Peoria, Illinois?

    Airlines like American Airlines fly from Seattle to Peoria, Illinois in about 8h 23m. The time it takes to get you to your destination can typically vary by up to . The distance from Seattle to Peoria, Illinois is about 1671 mi.

  • What are the cheapest airlines flying from Seattle to Peoria, Illinois round-trip?

    American Airlines, at $250, was found to be the cheapest airline from Seattle to Peoria, Illinois. An alternate airline flying to your destination would be United Airlines. Users have found that American Airlines is 43% cheaper than the other options available to this destination.

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

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

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

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

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

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

  • What is the cheapest month to book a flight from Seattle to Peoria, Illinois?

    Currently, August is the cheapest month in which you can book a flight from Seattle to Peoria, Illinois (average of $318). Flying from Seattle to Peoria, Illinois in December is currently the most expensive (average of $421). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from Seattle to Peoria

Discover the top 2 airlines that operate flights from Seattle to Peoria. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$250Average$411FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$304Average$457FlexibilityNo cancel feeOn-time69%

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