HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Peoria

$126+ Cheap flights from Seattle to Peoria, IL (SEA - PIA)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/26. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — PIA
jun. 17 — jun. 241
mar. 6/17
mar. 6/24
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Seattle to Peoria with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Greater Peoria are usually found in April or February, booked 79 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 junio 12, 2025.

Round-trip from

$270
(American Airlines)

One-way from

$126
(American Airlines)

Popular in

November

Cheapest in

April

Average price

$498
From Seattle/Tacoma Intl to Greater Peoria
Search Deals
One-way flight from Seattle/Tacoma Intl to Greater Peoria
Search Deals
Highest demand for flights based on searches. 25% potential increase in price ($172 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($22 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2025
Search Deals

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 junio 12, 2025.

This American Airlines deal was found by Cheapflights users on 6/11. 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.
vie. 8/2912:45 amSEA - PIA
1 stop6h 52mAmerican Airlines
dom. 8/316:39 pmPIA - SEA
1 stop7h 01mAmerican Airlines
Deal found 6/11$270
This United Airlines deal was found by Cheapflights users on 6/11. 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.
lun. 7/1412:20 amSEA - PIA
1 stop7h 59mUnited Airlines
sáb. 7/195:25 pmPIA - SEA
1 stop8h 34mUnited Airlines
Deal found 6/11$289
This Mytrip deal was found by Cheapflights users on 6/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 7/79:18 amSEA - PIA
3 stops26h 32mMultiple Airlines
mié. 7/98:39 pmPIA - SEA
1 stop21h 46mMultiple Airlines
Deal found 6/10$564

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 junio 12, 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

vie. 8/29

12:45 am-9:37 am

1 stop6h 52m

Greater Peoria

dom. 8/31

6:39 pm-11:40 pm

1 stop7h 01m

$270

SeattlePeoria

SEA - PIA

SEAPIA

Seattle/Tacoma Intl

lun. 7/14

12:20 am-10:19 am

1 stop7h 59m

Greater Peoria

sáb. 7/19

5:25 pm-11:59 pm

1 stop8h 34m

$289

SeattlePeoria

SEA - PIA

SEAPIA

Seattle/Tacoma Intl

lun. 7/7

9:18 am-1:50 pm

3 stops26h 32m

Greater Peoria

mié. 7/9

8:39 pm-4:25 pm

1 stop21h 46m

$564

SeattlePeoria

SEA - PIA

SEAPIA

Seattle/Tacoma Intl

mar. 8/26

11:30 pm-10:44 am

1 stop9h 14m

$126

SeattlePeoria

SEA - PIA

SEAPIA

Seattle/Tacoma Intl

mar. 8/26

7:34 pm-10:13 am

2 stops12h 39m

$176

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

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 June 9, 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 July is currently the most expensive (average of $438). 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.

Rainfall in Peoria by month

Plan your trip to Peoria by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Peoria, Illinois ranges from 1.8 - 4.3 inches per month. May is typically the wettest month, when rainfall can reach 4.3 in. January is typically the driest time to visit Peoria, Illinois when rainfall is around 1.8 in.

Temperature in Peoria by month

Plan your trip to Peoria by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Peoria, Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 75.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 24.8 F).

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 junio 12, 2025.
United Airlines
7.4
Good
8,790 reviews

Entertainment

7.0

Crew

8.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Food

6.6

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
8,790 reviews
United Airlines
7.4
Good
8,790 reviews

Entertainment

7.0

Crew

8.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Food

6.6

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
8,790 reviews

Entertainment

7.0

Crew

8.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Food

6.6

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.

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

    American Airlines, at $270, 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 47% 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 July is currently the most expensive (average of $438). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Seattle to Peoria

See prices for flight routes from nearby airports that may be better suited for you.
Seattle to O'Hare Intl flights
Portland to O'Hare Intl flights
Seattle to Midway flights
Seattle to St. Louis flights
Portland to Midway flights
Spokane to O'Hare Intl flights
Portland to St. Louis flights
Spokane to Midway flights
Seattle to Moline flights
Pasco to O'Hare Intl flights
Portland to Peoria flights
Seattle to Bloomington flights
Pasco to Midway flights
Portland to Rockford flights
Seattle to Evansville flights
Wenatchee to O'Hare Intl flights
Portland to Moline flights
Portland to Decatur flights
Spokane to St. Louis flights
Portland to Bloomington flights
Pasco to St. Louis flights
Pullman to O'Hare Intl flights
Portland to Champaign flights
Spokane to Evansville flights
Bellingham to O'Hare Intl flights
Spokane to Moline flights
Portland to Evansville flights
Portland to Springfield flights
Seattle to Rockford flights
Seattle to Decatur flights
Portland to Dubuque flights
Seattle to Champaign flights
Spokane to Springfield flights
Pullman to St. Louis flights
Spokane to Rockford flights
Bellingham to St. Louis flights
Yakima to O'Hare Intl flights
Spokane to Peoria flights
Spokane to Bloomington flights
Walla Walla to O'Hare Intl flights
Portland to Marion flights
Portland to Paducah flights
Seattle to Dubuque flights
Spokane to Dubuque flights
Spokane to Champaign flights
Seattle to Paducah flights
Walla Walla to St. Louis flights

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 junio 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$228Average$465FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$318Average$491FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.