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

American Airlines, at $228, 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 51% 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 46 days early can save you up to 81% on average compared to booking a flight this week. If booking 46 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 August tends to be the cheapest month to fly to Peoria, Illinois from Seattle. Users have commonly found prices around $468 for the month, but tickets can be as low as $283. 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.

$270+ Flights from Seattle to Peoria, IL

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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Greater Peoria are usually found in August or April, 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 (United Airlines)
Popular in	November
Cheapest in	August
Average price	$332

From Seattle/Tacoma Intl to Greater Peoria

Search Deals

Highest demand for flights based on searches. 17% potential increase in price ($98 potential increase over avg. RT price).

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Cheapest flight prices on average. 5% potential price decrease ($25 potential savings vs. average RT price).

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Average for round-trip flights in August 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 agosto 14, 2025.

vie. 11/1412:59 amSEA - PIA

1 stop6h 37mAmerican Airlines

jue. 11/2010:45 amPIA - SEA

1 stop10h 30mAmerican Airlines

Deal found 8/14

$270

mié. 10/111:40 pmSEA - PIA

1 stop8h 33mUnited Airlines

mié. 10/155:20 pmPIA - SEA

1 stop7h 10mUnited Airlines

Deal found 8/14

$289

mié. 12/2411:15 pmSEA - PIA

2 stops11h 05mUnited Airlines

mié. 1/77:00 amPIA - SEA

1 stop6h 40mUnited Airlines

Deal found 8/13

$294

mar. 9/301:57 pmSEA - PIA

1 stop6h 18mUnited Airlines

mar. 10/143:56 pmPIA - SEA

1 stop8h 34mUnited Airlines

Deal found 8/14

$310

sáb. 10/45:00 amSEA - PIA

2 stops9h 43mUnited Airlines

mié. 10/85:20 pmPIA - SEA

1 stop7h 10mUnited Airlines

Deal found 8/14

$316

mié. 10/11:57 pmSEA - PIA

1 stop6h 18mUnited Airlines

mié. 10/223:56 pmPIA - SEA

2 stops9h 33mUnited Airlines

Deal found 8/14

$317

jue. 8/2812:58 amSEA - PIA

1 stop7h 53mAmerican Airlines

mar. 9/26:39 pmPIA - SEA

1 stop7h 01mAmerican Airlines

Deal found 8/13

$339

mié. 9/1011:54 pmSEA - PIA

1 stop8h 19mUnited Airlines

sáb. 9/133:55 pmPIA - SEA

1 stop8h 25mUnited Airlines

Deal found 8/13

$341

sáb. 9/67:34 pmSEA - PIA

2 stops12h 39mUnited Airlines

sáb. 9/133:55 pmPIA - SEA

1 stop8h 25mUnited Airlines

Deal found 8/13

$346

vie. 9/511:54 pmSEA - PIA

1 stop8h 19mUnited Airlines

sáb. 9/133:55 pmPIA - SEA

1 stop8h 25mUnited Airlines

Deal found 8/13

$360

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 agosto 14, 2025.

mié. 10/111:40 amSEA - PIA

1 stop9h 43mAmerican Airlines

mié. 10/2211:16 amPIA - SEA

1 stop10h 11mAmerican Airlines

Deal found 8/14

$289

mié. 10/111:40 pmSEA - PIA

1 stop8h 33mUnited Airlines

mié. 10/155:20 pmPIA - SEA

1 stop7h 10mUnited Airlines

Deal found 8/14

$289

mar. 9/301:57 pmSEA - PIA

1 stop6h 18mUnited Airlines

mar. 10/143:56 pmPIA - SEA

1 stop8h 34mUnited Airlines

Deal found 8/14

$310

jue. 8/2812:58 amSEA - PIA

1 stop7h 53mAmerican Airlines

mar. 9/26:39 pmPIA - SEA

1 stop7h 01mAmerican Airlines

Deal found 8/13

$339

sáb. 10/411:40 pmSEA - PIA

1 stop8h 33mUnited Airlines

mié. 10/85:20 pmPIA - SEA

1 stop7h 10mUnited Airlines

Deal found 8/14

$310

sáb. 9/275:26 amSEA - PIA

1 stop7h 36mAmerican Airlines

sáb. 10/411:24 amPIA - SEA

1 stop9h 45mAmerican Airlines

Deal found 8/13

$341

mié. 10/11:57 pmSEA - PIA

1 stop6h 18mUnited Airlines

mié. 10/223:56 pmPIA - SEA

2 stops9h 33mUnited Airlines

Deal found 8/14

$317

mié. 9/246:42 amSEA - PIA

1 stop7h 56mAmerican Airlines

mié. 10/16:54 amPIA - SEA

1 stop7h 18mAmerican Airlines

Deal found 8/13

$341

mar. 9/1612:19 pmSEA - PIA

1 stop8h 48mAmerican Airlines

mié. 9/2410:39 amPIA - SEA

1 stop8h 50mAmerican Airlines

Deal found 8/13

$341

mar. 9/231:02 pmSEA - PIA

1 stop6h 34mAmerican Airlines

mié. 10/16:54 amPIA - SEA

1 stop7h 18mAmerican Airlines

Deal found 8/13

$341

Last-minute flights from Seattle to Peoria
Discover last-minute flight deals from Seattle to Peoria. Data last updated agosto 14, 2025 and is based on user searches.

jue. 8/2812:58 amSEA - PIA

1 stop7h 53mAmerican Airlines

mar. 9/26:39 pmPIA - SEA

1 stop7h 01mAmerican Airlines

Deal found 8/13

$339

jue. 9/42:00 pmSEA - PIA

1 stop6h 15mUnited Airlines

lun. 9/85:19 pmPIA - SEA

1 stop7h 01mUnited Airlines

Deal found 8/13

$379

vie. 9/511:54 pmSEA - PIA

1 stop8h 19mUnited Airlines

sáb. 9/133:55 pmPIA - SEA

1 stop8h 25mUnited Airlines

Deal found 8/13

$360

sáb. 9/67:34 pmSEA - PIA

2 stops12h 39mUnited Airlines

sáb. 9/133:55 pmPIA - SEA

1 stop8h 25mUnited Airlines

Deal found 8/13

$346

mié. 9/1011:54 pmSEA - PIA

1 stop8h 19mUnited Airlines

sáb. 9/133:55 pmPIA - SEA

1 stop8h 25mUnited Airlines

Deal found 8/13

$341

sáb. 9/135:35 pmSEA - PIA

2 stops14h 38mUnited Airlines

lun. 9/223:55 pmPIA - SEA

2 stops9h 04mUnited Airlines

Deal found 8/13

$370

mié. 9/172:00 pmSEA - PIA

1 stop6h 15mUnited Airlines

jue. 9/255:20 pmPIA - SEA

1 stop7h 10mUnited Airlines

Deal found 8/13

$385

sáb. 9/207:34 pmSEA - PIA

2 stops12h 39mUnited Airlines

dom. 9/285:20 pmPIA - SEA

1 stop7h 10mUnited Airlines

Deal found 8/13

$365

vie. 9/265:26 pmSEA - PIA

2 stops14h 47mUnited Airlines

vie. 10/310:48 amPIA - SEA

1 stop6h 57mUnited Airlines

Deal found 8/13

$384

mar. 9/301:57 pmSEA - PIA

1 stop6h 18mUnited Airlines

mar. 10/143:56 pmPIA - SEA

1 stop8h 34mUnited Airlines

Deal found 8/14

$310

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 agosto 14, 2025.

sáb. 8/301:05 pmSEA - PIA

2 stops25h 38mUnited Airlines

Deal found 8/13

$304

lun. 9/111:37 amSEA - PIA

3 stops50h 43mMultiple Airlines

Deal found 8/13

$312

mié. 9/175:35 pmSEA - PIA

2 stops14h 38mUnited Airlines

Deal found 8/14

$333

sáb. 8/303:09 pmSEA - PIA

1 stop16h 28mAmerican Airlines

Deal found 8/13

$334

dom. 8/3112:46 amSEA - PIA

1 stop6h 51mAmerican Airlines

Deal found 8/13

$415

lun. 9/17:34 pmSEA - PIA

2 stops12h 39mUnited Airlines

Deal found 8/13

$420

Fly from

Fly to

Route

Depart

Return

Price

SeattlePeoria

SEA - PIA

SEAPIA

Seattle/Tacoma Intl

mié. 10/1

11:40 am-11:23 pm

1 stop9h 43m

Greater Peoria

mié. 10/22

11:16 am-7:27 pm

1 stop10h 11m

$289

SeattlePeoria

SEA - PIA

SEAPIA

Seattle/Tacoma Intl

mié. 10/1

11:40 pm-10:13 am

1 stop8h 33m

Greater Peoria

mié. 10/15

5:20 pm-10:30 pm

1 stop7h 10m

$289

SeattlePeoria

SEA - PIA

SEAPIA

Seattle/Tacoma Intl

mar. 9/30

1:57 pm-10:15 pm

1 stop6h 18m

Greater Peoria

mar. 10/14

3:56 pm-10:30 pm

1 stop8h 34m

$310

SeattlePeoria

SEA - PIA

SEAPIA

Seattle/Tacoma Intl

sáb. 10/4

11:40 pm-10:13 am

1 stop8h 33m

Greater Peoria

mié. 10/8

5:20 pm-10:30 pm

1 stop7h 10m

$310

SeattlePeoria

SEA - PIA

SEAPIA

Seattle/Tacoma Intl

mié. 10/1

1:57 pm-10:15 pm

1 stop6h 18m

Greater Peoria

mié. 10/22

3:56 pm-11:29 pm

2 stops9h 33m

$317

SeattlePeoria

SEA - PIA

SEAPIA

Seattle/Tacoma Intl

jue. 8/28

12:58 am-10:51 am

1 stop7h 53m

Greater Peoria

mar. 9/2

6:39 pm-11:40 pm

1 stop7h 01m

$339

SeattlePeoria

SEA - PIA

SEAPIA

Seattle/Tacoma Intl

sáb. 9/27

5:26 am-3:02 pm

1 stop7h 36m

Greater Peoria

sáb. 10/4

11:24 am-7:09 pm

1 stop9h 45m

$341

SeattlePeoria

SEA - PIA

SEAPIA

Seattle/Tacoma Intl

mié. 9/24

6:42 am-4:38 pm

1 stop7h 56m

Greater Peoria

mié. 10/1

6:54 am-12:12 pm

1 stop7h 18m

$341

SeattlePeoria

SEA - PIA

SEAPIA

Seattle/Tacoma Intl

mar. 9/16

12:19 pm-11:07 pm

1 stop8h 48m

Greater Peoria

mié. 9/24

10:39 am-5:29 pm

1 stop8h 50m

$341

SeattlePeoria

SEA - PIA

SEAPIA

Seattle/Tacoma Intl

mar. 9/23

1:02 pm-9:36 pm

1 stop6h 34m

Greater Peoria

mié. 10/1

6:54 am-12:12 pm

1 stop7h 18m

$341

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/13

Showing 1-10 of 16 results

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 $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

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

8,916 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

8,916 reviews

United Airlines

7.4

Good

8,916 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

8,916 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 $228, 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 51% 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 $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

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$427	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$318	Average$491	FlexibilityNo cancel fee	On-time69%

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$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.

Find cheap flights from Seattle to Peoria with Cheapflights

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3. Compare prices and book

Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Greater Peoria are usually found in August or April, 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

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 agosto 14, 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 agosto 14, 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 August 8, 2025.

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

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.

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

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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 agosto 14, 2025.