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

American Airlines, at $289, 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 42% cheaper than the other options available to this destination.

What is the cheapest day to fly from Seattle to Peoria, Illinois?

Travelers seeking maximum savings on their Seattle to Peoria, Illinois flight should consider departing on Tuesday evenings when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

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.

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).

What is the cheapest day to fly round-trip from Seattle to Peoria, Illinois?

It’s generally more expensive to depart on a Friday, if you have to leave on this day you can still search on Cheapflights to find great options that meet your needs.

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

Users have found that booking a flight from Seattle to Peoria, Illinois at least 26 days early can save you up to 75% on average compared to booking a flight this week. If booking 26 days before your flight isn’t an option for you, users have found flights from Seattle to Peoria, Illinois for as little as $358 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $533 for flights departing within the next 3 days.

What is the cheapest month to fly from Seattle to Peoria, Illinois?

Our data shows that April tends to be the cheapest month to fly to Peoria, Illinois from Seattle. Users have commonly found prices around $505 for the month, but tickets can be as low as $228. Due to multiple factors, prepare for potentially higher prices in November.

What is the cheapest time of day to fly from SEA to PIA?

A simple way to save on the total cost of your ticket is to fly from Seattle to Peoria, Illinois in the afternoon. If you’re flexible enough to do this you can expect to save up to 18% on your trip compared to booking a flight at noon.

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.

$115+ Flights from Seattle to Peoria, IL

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

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 78 days in advance, depart on a Saturday or Tuesday and return on a Wednesday

Cheap flight deals from Seattle to Peoria

Round-trip from	$289 (American Airlines)
One-way from	$115 (American Airlines)
Popular in	November
Cheapest in	April
Average price	$542

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. 23% potential increase in price ($156 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 July 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 July 11, 2025.

Wed 8/2012:46 amSEA - PIA

1 stop6h 51mAmerican Airlines

Sun 8/244:45 pmPIA - SEA

1 stop8h 31mAmerican Airlines

Deal found 7/9

$289

Thu 8/2111:11 amSEA - PIA

2 stops9h 04mUnited Airlines

Sun 8/245:19 pmPIA - SEA

1 stop7h 01mUnited Airlines

Deal found 7/9

$331

Thu 7/105:30 pmSEA - PIA

3 stops19h 28mMultiple Airlines

Sun 7/132:16 pmPIA - SEA

2 stops19h 43mMultiple Airlines

Deal found 7/10

$936

Best flights from Seattle to Peoria
Discover carefully curated flight deals from Seattle to Peoria that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 11, 2025.

Wed 8/2012:46 amSEA - PIA

1 stop6h 51mAmerican Airlines

Sun 8/244:45 pmPIA - SEA

1 stop8h 31mAmerican Airlines

Deal found 7/9

$289

Thu 8/2111:11 amSEA - PIA

2 stops9h 04mUnited Airlines

Sun 8/245:19 pmPIA - SEA

1 stop7h 01mUnited Airlines

Deal found 7/9

$331

Last-minute flights from Seattle to Peoria
Discover last-minute flight deals from Seattle to Peoria. Data last updated July 11, 2025 and is based on user searches.

Thu 7/105:30 pmSEA - PIA

3 stops19h 28mMultiple Airlines

Sun 7/132:16 pmPIA - SEA

2 stops19h 43mMultiple Airlines

Deal found 7/10

$936

Thu 7/1712:20 amSEA - PIA

1 stop7h 59mUnited Airlines

Fri 7/183:39 pmPIA - SEA

1 stop20h 11mUnited Airlines

Deal found 7/9

$868

Wed 8/2012:46 amSEA - PIA

1 stop6h 51mAmerican Airlines

Sun 8/244:45 pmPIA - SEA

1 stop8h 31mAmerican Airlines

Deal found 7/9

$289

Thu 8/2111:11 amSEA - PIA

2 stops9h 04mUnited Airlines

Sun 8/245:19 pmPIA - SEA

1 stop7h 01mUnited Airlines

Deal found 7/9

$331

One-way flights from Seattle to Peoria
Search for one-way flight options from Seattle to Peoria. Find affordable one-way fares based on user searches. Data last updated July 11, 2025.

Sat 8/305:35 amSEA - PIA

1 stop8h 40mAmerican Airlines

Deal found 7/10

$115

Tue 8/1911:54 pmSEA - PIA

1 stop8h 19mUnited Airlines

Deal found 7/9

$171

Sun 7/275:30 pmSEA - PIA

1 stop16h 25mMultiple Airlines

Deal found 7/10

$230

Cheapflights Fare Finder

Use the filters below to find and compare flights from Seattle to Peoria that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattlePeoria

SEA - PIA

SEAPIA

Seattle/Tacoma Intl

Wed 8/20

12:46 am-9:37 am

1 stop6h 51m

Greater Peoria

Sun 8/24

4:45 pm-11:16 pm

1 stop8h 31m

$289

SeattlePeoria

SEA - PIA

SEAPIA

Seattle/Tacoma Intl

Thu 8/21

11:11 am-10:15 pm

2 stops9h 04m

Greater Peoria

Sun 8/24

5:19 pm-10:20 pm

1 stop7h 01m

$331

SeattlePeoria

SEA - PIA

SEAPIA

Seattle/Tacoma Intl

Sat 8/30

5:35 am-4:15 pm

1 stop8h 40m

$115

SeattlePeoria

SEA - PIA

SEAPIA

Seattle/Tacoma Intl

Tue 8/19

11:54 pm-10:13 am

1 stop8h 19m

$171

SeattlePeoria

SEA - PIA

SEAPIA

Seattle/Tacoma Intl

Sun 7/27

5:30 pm-11:55 am

1 stop16h 25m

$230

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/10

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?

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 October is currently the most expensive (average of $428). 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

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

8,846 reviews

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

8,846 reviews

United Airlines

7.4

Good

8,846 reviews

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

8,846 reviews

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

What are the cheapest airlines flying from Seattle to Peoria, Illinois round-trip?
American Airlines, at $289, 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 42% 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 October is currently the most expensive (average of $428). 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

Top 2 airlines flying from Seattle to Peoria

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$228	Average$449	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$318	Average$490	FlexibilityNo cancel fee	On-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.

$115+ 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 8/30. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Seattle to Peoria with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

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

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Seattle to Peoria

Cheapest flights from Seattle to PeoriaExplore 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 July 11, 2025.

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 July 11, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Seattle to Peoria that are best for you.

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.

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 27, 2025.

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

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 July 11, 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.

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?

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

How can I find direct flights from Seattle to Peoria?

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

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

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.

Top 2 airlines flying from Seattle to Peoria

100% Free

Book with Flexibility

Travel Smart

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 July 11, 2025.