Cheap flights from Seattle to Illinois from $43
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Illinois departing on 5/14. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Round-trip
1 adult
Economy
0 bags
From?
To?
Sat 5/4
Sat 5/11
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Below you can see the best fares for your round-trip flight route over the next six months. All fares were found on momondo this week. Browse the quickest and cheapest flights from Seattle to Illinois by changing tabs
Multiple Airlines![Multiple Airlines]()
May 28![Multiple Airlines]()
Jun 4
SEA12:14 pmSeattle/Tacoma Intl
4h 15m
ORD6:29 pmChicago O'Hare Intl
ORD10:52 pmChicago O'Hare Intl
11h 40m
1 stop
SEA8:32 amSeattle/Tacoma Intl
Delta![Delta]()
Sep 24![Delta]()
Oct 1
SEA6:00 pmSeattle/Tacoma Intl
3h 58m
ORD11:58 pmChicago O'Hare Intl
ORD7:26 amChicago O'Hare Intl
4h 39m
SEA10:05 amSeattle/Tacoma Intl
Spirit Airlines![Spirit Airlines]()
May 28![Spirit Airlines]()
Jun 4
SEA9:40 pmSeattle/Tacoma Intl
30h 20m
2 stops
ORD6:00 amChicago O'Hare Intl
ORD10:52 pmChicago O'Hare Intl
11h 40m
1 stop
SEA8:32 amSeattle/Tacoma Intl
Alaska Airlines![Alaska Airlines]()
May 18![Alaska Airlines]()
May 21
SEA10:49 pmSeattle/Tacoma Intl
4h 06m
ORD4:55 amChicago O'Hare Intl
ORD8:00 amChicago O'Hare Intl
8h 29m
1 stop
SEA2:29 pmSeattle/Tacoma Intl
United Airlines![United Airlines]()
Aug 20![United Airlines]()
Aug 26
SEA12:55 pmSeattle/Tacoma Intl
9h 45m
1 stop
ORD12:40 amChicago O'Hare Intl
ORD7:45 pmChicago O'Hare Intl
4h 37m
SEA10:22 pmSeattle/Tacoma Intl
Find the cheapest one-way flights from Seattle to Illinois
If you're looking for one-way flights from Seattle to Illinois, view some of our deals below provided by Alaska Airlines, American Airlines and Delta
Search last-minute flights to Illinois from Seattle
Find and compare round-trip flight prices for your last-minute flight from Seattle to Illinois
Multiple Airlines![Multiple Airlines]()
May 7![Multiple Airlines]()
May 17
SEA9:35 pmSeattle/Tacoma Intl
25h 21m
1 stop
ORD12:56 amChicago O'Hare Intl
ORD7:52 pmChicago O'Hare Intl
14h 53m
1 stop
SEA8:45 amSeattle/Tacoma Intl
Frontier![Frontier]()
May 11![Frontier]()
May 14
SEA2:55 pmSeattle/Tacoma Intl
15h 36m
1 stop
MDW8:31 amChicago Midway
MDW10:34 pmChicago Midway
12h 21m
1 stop
SEA8:55 amSeattle/Tacoma Intl
Spirit Airlines![Spirit Airlines]()
May 7![Spirit Airlines]()
May 8
SEA9:19 pmSeattle/Tacoma Intl
7h 11m
1 stop
ORD6:30 amChicago O'Hare Intl
ORD5:50 pmChicago O'Hare Intl
28h 39m
1 stop
SEA8:29 pmSeattle/Tacoma Intl
Delta![Delta]()
May 3![Delta]()
May 11
SEA5:35 amSeattle/Tacoma Intl
5h 56m
1 stop
STL1:31 pmLambert-St Louis
STL5:30 pmLambert-St Louis
6h 33m
1 stop
SEA10:03 pmSeattle/Tacoma Intl
Alaska Airlines![Alaska Airlines]()
May 6![Alaska Airlines]()
May 17
SEA11:46 pmSeattle/Tacoma Intl
3h 59m
ORD5:45 amChicago O'Hare Intl
ORD9:20 pmChicago O'Hare Intl
4h 35m
SEA11:55 pmSeattle/Tacoma Intl
Best airlines flying from Seattle to Illinois
Compare and see reviews for airlines that fly from Seattle to Illinois with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $98 | Free Cancellation | Rating 8.0 10,913 reviews | |||
| PriceFrom $99 | Free Cancellation | Rating 8.0 9,116 reviews | |||
| PriceFrom $114 | Free Cancellation | Rating 7.4 11,202 reviews | |||
| PriceFrom $120 | Free Cancellation | Rating 6.2 4,123 reviews | |||
| PriceFrom $129 | Free Cancellation | Rating 6.4 8,745 reviews | |||
| PriceFrom $139 | Free Cancellation | Rating 7.3 14,834 reviews |
Alaska Airlines flights from Seattle to Illinois
Our best Alaska Airlines deals on Seattle to Illinois flight tickets
Alaska Airlines![Alaska Airlines]()
May 18![Alaska Airlines]()
May 21
SEA10:49 pmSeattle/Tacoma Intl
4h 06m
ORD4:55 amChicago O'Hare Intl
ORD8:00 amChicago O'Hare Intl
8h 29m
1 stop
SEA2:29 pmSeattle/Tacoma Intl
Alaska Airlines![Alaska Airlines]()
Aug 17![Alaska Airlines]()
Aug 24
SEA10:44 amSeattle/Tacoma Intl
4h 06m
ORD4:50 pmChicago O'Hare Intl
ORD7:00 amChicago O'Hare Intl
7h 30m
1 stop
SEA12:30 pmSeattle/Tacoma Intl
Frontier flights from Seattle to Illinois
Our best Frontier deals on Seattle to Illinois flight tickets
Frontier![Frontier]()
May 20![Frontier]()
May 29
SEA9:40 amSeattle/Tacoma Intl
13h 08m
1 stop
ORD12:48 amChicago O'Hare Intl
ORD7:59 pmChicago O'Hare Intl
28h 13m
1 stop
SEA10:12 pmSeattle/Tacoma Intl
Frontier![Frontier]()
May 9![Frontier]()
May 13
SEA5:31 pmSeattle/Tacoma Intl
14h 47m
1 stop
STL10:18 amLambert-St Louis
STL9:53 pmLambert-St Louis
13h 51m
1 stop
SEA9:44 amSeattle/Tacoma Intl
How to get the cheapest flight ticket from Seattle to Illinois
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest airline that flies to Illinois from Seattle?
Frontier. Alaska Airlines, American Airlines, and Delta are the most popular carriers operating from Seattle to Illinois
What is the cheapest Seattle to Illinois flight route?
Seattle/Tacoma Intl - Chicago O'Hare Intl. Fly from Seattle/Tacoma Intl to Chicago O'Hare Intl for the best Seattle - Illinois flight prices
What cabin class options are available on Seattle to Illinois flights?
There are 4 cabin classes available to choose from on Seattle to Illinois flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
Can stopping save me money on Seattle to Illinois flights?
You could potentially save up to 10% on your flight if you consider stops on a Seattle to Illinois flight.
Cheap Seattle to Illinois flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Seattle to Illinois
Best Price Found | $43 |
|---|---|
Fastest flight time | 3h 49m |
Direct flights | Every day |
Airports in Illinois | 3 airports |
When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Illinois?
Prices for flights from Seattle/Tacoma Intl Airport to Illinois are updated daily.
How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Illinois?
There are 6 operators available for flights from Seattle/Tacoma Intl Airport to Illinois as of April 2024.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to Illinois?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Illinois.
What documentation or ID do you need to fly to Illinois?
The necessary travel and health documents for your Illinois trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
Why use momondo?
Why should I use momondo to find a flight deal from Seattle to Illinois?
momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Seattle to Illinois. Millions of users trust and use momondo every year so you are in good hands.
Can I find flights from Seattle to Illinois with flexible booking policies on momondo?
All flight searches from Seattle to Illinois on momondo can be filtered to show those which offer flexible booking policies.
How can momondo help me find flights from Seattle to Illinois?
Once all potential Seattle to Illinois flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.
I’m not ready to book a flight from Seattle to Illinois right now. Can momondo alert me if prices change?
Price alerts on flights to Illinois from Seattle are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.
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