Cheap flights from Seattle (SEA) to Illinois (IL)

Flight FAQs

From Seattle to Illinois

What airport do you fly from for flights from Seattle to Illinois?

Most people fly from Seattle/Tacoma Intl (SEA) if they book a flight from Seattle to Illinois. Seattle/Tacoma Intl is conveniently located just 11.4 mi from Seattle’s city center.

Which airlines flying from Seattle/Tacoma Intl to Illinois have flexible cancellations due to COVID-19?

Some of our airline partners flying from Seattle/Tacoma Intl to Illinois have new flexible policies in place due to COVID-19. Alaska Airlines, Delta, and United Airlines are some of the carriers where you may find flexible cancellation policies. You can use our site to filter for airlines like Alaska Airlines with this kind of flexibility.

Can I find flights from Seattle to Illinois for under $200 on Cheapflights?

Yes, there are multiple flights from Seattle to Illinois for under $200. The cheapest flight booked recently is on Multiple Airlines for just $117, but on average you can expect to pay $144.

Are there nonstop flights from Seattle to Illinois for under $200 on Cheapflights?

Cheapflights has at least 20 direct flights from Seattle to Illinois under $200. A good price for a nonstop flight from Seattle to Illinois is less than $191.

Are there last-minute flights available from Seattle to Illinois for under $200?

There are currently 20+ open flights from Seattle to Illinois within the next 7 days for less than $200.

What days are nonstop flights available from Seattle to Illinois?

Days when nonstop flights are available for this flight are: Monday, Tuesday, Wednesday, Thursday, Friday, Saturday.

How many flights depart from Seattle to Illinois on average per day?

Per day, 44 flights depart from Seattle to Illinois on average.
Early Morning (Midnight to 6am) - 20% of flight departures
Morning (6am - Noon) - 30% of flight departures
Afternoon (Noon - 6pm) - 36% of flight departures
Evening (6pm - Midnight) - 14% of flight departures

How long is the flight from Seattle to Illinois?

Airlines like Frontier, Spirit Airlines, and Alaska Airlines fly from Seattle to Illinois in about 3h 58m. The time it takes to get you to your destination can typically vary by up to 4h 11m. The distance between Seattle and Illinois is about 1725 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

What are the cheapest airlines to fly from Seattle to Illinois one-way?

The cheapest airlines for a one-way flight from Seattle to Illinois are Frontier ($54), Spirit Airlines ($66), and Alaska Airlines ($68).

What are the most popular airlines that fly from Seattle to Illinois?

The most popular airlines flying from Seattle to Illinois are Major Airline, American Airlines and Alaska Airlines. Something to consider prior to booking your flight.

What are the cheapest flights from Seattle to Illinois?

On average you can expect to pay $354 for a flight from Seattle to Illinois. The cheapest flight overall is $43 while the most popular route, (Seattle/Tacoma Intl - Chicago O'Hare Intl) is currently priced at $169.

What are the most reliable airlines from Seattle to Illinois?

No one likes to see their flight delayed. When booking a flight from Seattle to Illinois consider choosing Air France (100%), Iberia (96%) or Royal Jordanian (92%) as they are the most reliable in getting you off to your destination on time.

What are the most popular routes from Seattle to Illinois?

The most popular flight routes from Seattle to Illinois are Seattle/Tacoma Intl - Chicago O'Hare Intl, Seattle/Tacoma Intl - Chicago Midway and Seattle/Tacoma Intl - Lambert-St Louis.