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Cheap flights from Illinois to Seattle (SEA) from $59

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 6/4. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
ORD — SEA
May 12 — May 191
From?
To?
Sun 5/12
Sun 5/19
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

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

Users have found that booking a flight from Illinois to Seattle at least 50 days early can save you up to 115% on average compared to booking a flight this week. If booking 50 days before your flight isn’t an option for you, users have found flights from Illinois to Seattle for as little as $322 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 $578 for flights departing within the next 3 days.

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

January can be a great time to fly to Seattle from Illinois with a flight ticket averaging about $272. Cheapflights users have found deals in the month of January for as cheap as $97. The most expensive prices can be found in the month of July.

When is the cheapest time to fly from Illinois to Seattle (IL - SEA)?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to Seattle as you normally would.

Cheap Frontier flights from Illinois to Seattle

Explore cheap flight options specifically provided by Frontier for the route between Illinois and Seattle. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,749,864 searches. Data last updated May 7, 2024.
Check out some of the cheapest Frontier flights we've come across from Illinois to Seattle. Deals update often to give you more flight options matching your criteria
Tue 5/1410:34 pmMDW - SEA
1 stop12h 21mFrontier
Tue 5/218:14 pmSEA - MDW
1 stop12h 55mFrontier
Deal found 5/6$144
Fri 5/1711:31 amMDW - SEA
1 stop9h 11mFrontier
Tue 5/218:14 pmSEA - MDW
1 stop12h 55mFrontier
Deal found 5/6$148
Wed 5/156:27 pmORD - SEA
1 stop16h 03mFrontier
Wed 5/228:04 amSEA - ORD
1 stop15h 09mFrontier
Deal found 5/7$153
Sat 5/188:04 pmSTL - SEA
1 stop13h 00mFrontier
Mon 5/208:00 pmSEA - STL
1 stop12h 13mFrontier
Deal found 5/6$158
Sat 5/185:05 amMDW - SEA
1 stop27h 59mFrontier
Tue 5/218:14 pmSEA - MDW
1 stop12h 55mFrontier
Deal found 5/6$163
Tue 5/1410:34 pmMDW - SEA
1 stop12h 21mFrontier
Tue 5/218:14 pmSEA - MDW
1 stop12h 55mFrontier
Deal found 5/7$164
Thu 5/168:55 pmMDW - SEA
1 stop25h 09mFrontier
Tue 5/218:14 pmSEA - MDW
1 stop12h 55mFrontier
Deal found 5/7$167
Wed 9/411:32 amMDW - SEA
1 stop9h 53mFrontier
Tue 9/107:51 pmSEA - MDW
1 stop8h 42mFrontier
Deal found 5/6$168
Wed 9/118:00 pmSTL - SEA
1 stop14h 37mFrontier
Sat 9/2111:30 amSEA - STL
1 stop20h 48mFrontier
Deal found 5/6$169

Cheap Alaska Airlines flights from Illinois to Seattle

Explore cheap flight options specifically provided by Alaska Airlines for the route between Illinois and Seattle. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,749,864 searches. Data last updated May 7, 2024.
To aid your search, here are some of the cheapest Alaska Airlines flights we've found from Illinois to Seattle. Deals frequently update to provide users with more options.
Wed 5/299:20 pmORD - SEA
Nonstop4h 35mAlaska Airlines
Wed 6/511:34 pmSEA - ORD
Nonstop4h 06mAlaska Airlines
Deal found 5/7$149
Fri 5/316:00 amORD - SEA
Nonstop4h 27mAlaska Airlines
Tue 6/410:39 amSEA - ORD
Nonstop4h 15mAlaska Airlines
Deal found 5/7$179
Wed 9/186:00 amORD - SEA
Nonstop4h 34mAlaska Airlines
Thu 9/197:45 pmSEA - ORD
1 stop7h 45mAlaska Airlines
Deal found 5/7$188
Thu 8/87:22 pmORD - SEA
Nonstop4h 38mAlaska Airlines
Tue 8/138:45 pmSEA - ORD
1 stop6h 30mAlaska Airlines
Deal found 5/5$208
Fri 5/319:20 pmORD - SEA
Nonstop4h 35mAlaska Airlines
Sun 6/211:34 pmSEA - ORD
Nonstop4h 06mAlaska Airlines
Deal found 5/7$209
Sat 5/255:28 pmORD - SEA
Nonstop4h 31mAlaska Airlines
Tue 5/2811:34 pmSEA - ORD
Nonstop4h 06mAlaska Airlines
Deal found 5/7$213
Tue 6/47:41 pmSTL - SEA
Nonstop4h 19mAlaska Airlines
Sat 6/85:58 pmSEA - STL
Nonstop4h 01mAlaska Airlines
Deal found 5/7$237
Mon 6/179:22 pmORD - SEA
Nonstop4h 37mAlaska Airlines
Tue 6/255:40 pmSEA - ORD
Nonstop3h 59mAlaska Airlines
Deal found 5/7$239
Tue 5/216:00 amORD - SEA
Nonstop4h 27mAlaska Airlines
Sat 5/255:45 pmSEA - ORD
Nonstop4h 04mAlaska Airlines
Deal found 5/7$243

Cheap Illinois to Seattle flights in May & June 2024

Find cheap flight options from Illinois to Seattle specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,749,864 searches. Prices were last updated on May 7, 2024.
The lowest fares we've come across on flights traveling from Illinois to Seattle in May and June 2024. If these deals don't appeal to you, be sure to come back soon for more options.
Fri 5/1710:21 pmSTL - SEA
1 stop11h 49mMultiple Airlines
Tue 5/289:40 pmSEA - STL
1 stop11h 06mMultiple Airlines
Deal found 5/7$143
Mon 5/139:53 pmSTL - SEA
1 stop13h 51mFrontier
Mon 5/208:00 pmSEA - STL
1 stop12h 13mFrontier
Deal found 5/6$144
Fri 5/1711:31 amMDW - SEA
1 stop9h 11mFrontier
Tue 5/218:14 pmSEA - MDW
1 stop12h 55mFrontier
Deal found 5/6$148
Thu 5/307:23 pmSTL - SEA
1 stop26h 41mMultiple Airlines
Tue 6/49:40 pmSEA - STL
1 stop13h 25mMultiple Airlines
Deal found 5/7$148
Wed 5/299:20 pmORD - SEA
Nonstop4h 35mAlaska Airlines
Wed 6/511:34 pmSEA - ORD
Nonstop4h 06mAlaska Airlines
Deal found 5/7$149
Wed 5/156:27 pmORD - SEA
1 stop16h 03mFrontier
Wed 5/228:04 amSEA - ORD
1 stop15h 09mFrontier
Deal found 5/7$153
Tue 6/410:52 pmORD - SEA
1 stop11h 40mMultiple Airlines
Tue 6/117:45 pmSEA - ORD
1 stop6h 55mMultiple Airlines
Deal found 5/7$154
Wed 5/158:04 pmSTL - SEA
1 stop14h 26mFrontier
Mon 5/208:00 pmSEA - STL
1 stop12h 13mFrontier
Deal found 5/6$154
Sat 5/188:04 pmSTL - SEA
1 stop13h 00mFrontier
Mon 5/208:00 pmSEA - STL
1 stop12h 13mFrontier
Deal found 5/6$158

Illinois to Seattle 2024 flight deals

Discover exclusive flight deals for travel between Illinois and Seattle in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,749,864 searches. Data last updated May 7, 2024.
The lowest fares we've come across on flights traveling from Illinois to Seattle in May and June 2024. If these deals don't appeal to you, be sure to come back soon for more options.
Fri 5/1710:21 pmSTL - SEA
1 stop11h 49mMultiple Airlines
Tue 5/289:40 pmSEA - STL
1 stop11h 06mMultiple Airlines
Deal found 5/7$143
Mon 5/139:53 pmSTL - SEA
1 stop13h 51mFrontier
Mon 5/208:00 pmSEA - STL
1 stop12h 13mFrontier
Deal found 5/6$144
Fri 5/1711:31 amMDW - SEA
1 stop9h 11mFrontier
Tue 5/218:14 pmSEA - MDW
1 stop12h 55mFrontier
Deal found 5/6$148
Thu 5/307:23 pmSTL - SEA
1 stop26h 41mMultiple Airlines
Tue 6/49:40 pmSEA - STL
1 stop13h 25mMultiple Airlines
Deal found 5/7$148
Wed 5/299:20 pmORD - SEA
Nonstop4h 35mAlaska Airlines
Wed 6/511:34 pmSEA - ORD
Nonstop4h 06mAlaska Airlines
Deal found 5/7$149
Wed 5/156:27 pmORD - SEA
1 stop16h 03mFrontier
Wed 5/228:04 amSEA - ORD
1 stop15h 09mFrontier
Deal found 5/7$153
Sat 8/176:30 pmORD - SEA
Nonstop4h 39mUnited Airlines
Tue 8/2012:55 pmSEA - ORD
1 stop9h 45mUnited Airlines
Deal found 5/7$154
Wed 5/158:04 pmSTL - SEA
1 stop14h 26mFrontier
Mon 5/208:00 pmSEA - STL
1 stop12h 13mFrontier
Deal found 5/6$154
Sat 5/188:04 pmSTL - SEA
1 stop13h 00mFrontier
Mon 5/208:00 pmSEA - STL
1 stop12h 13mFrontier
Deal found 5/6$158

Non-stop flights to Seattle from Illinois

Discover non-stop flight options from Illinois to Seattle. Find direct flights with no layovers, providing a convenient travel experience. Explore non-stop flight options based on user searches, and compare prices and availability for your desired travel dates. Over the last 7 days, Cheapflights users made 2,749,864 searches. Data last updated May 7, 2024.
If you're seeking options on non-stop flights from Illinois to Seattle, check out these fares. Search for alternative flights from Illinois to Seattle by utilizing the search form above.
Wed 5/299:20 pmORD - SEA
Nonstop4h 35mAlaska Airlines
Wed 6/511:34 pmSEA - ORD
Nonstop4h 06mAlaska Airlines
Deal found 5/7$149
Fri 5/316:00 amORD - SEA
Nonstop4h 27mAlaska Airlines
Tue 6/410:39 amSEA - ORD
Nonstop4h 15mAlaska Airlines
Deal found 5/7$179
Sat 6/156:50 pmORD - SEA
Nonstop4h 44mDelta
Mon 6/176:00 pmSEA - ORD
Nonstop3h 58mDelta
Deal found 5/7$189
Sat 6/227:08 pmORD - SEA
Nonstop4h 49mAmerican Airlines
Sat 6/2910:52 pmSEA - ORD
Nonstop4h 15mAmerican Airlines
Deal found 5/7$194
Wed 6/56:00 amORD - SEA
Nonstop4h 28mDelta
Sat 6/86:00 pmSEA - ORD
Nonstop3h 58mDelta
Deal found 5/7$199
Wed 6/196:00 amORD - SEA
Nonstop4h 31mAlaska Airlines
Wed 6/266:07 amSEA - ORD
Nonstop4h 06mAlaska Airlines
Deal found 5/7$209
Sat 5/255:28 pmORD - SEA
Nonstop4h 31mAlaska Airlines
Tue 5/2811:34 pmSEA - ORD
Nonstop4h 06mAlaska Airlines
Deal found 5/7$213
Tue 5/217:45 pmORD - SEA
Nonstop4h 42mUnited Airlines
Tue 5/2811:59 pmSEA - ORD
Nonstop3h 58mUnited Airlines
Deal found 5/7$214
Mon 6/106:50 pmORD - SEA
Nonstop4h 44mDelta
Thu 6/1311:50 amSEA - ORD
Nonstop4h 05mDelta
Deal found 5/7$215

Illinois to Seattle flights leaving soon

Find last-minute flight options from Illinois to Seattle for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 2,749,864 searches. Data last updated May 7, 2024.
Have a look at some of the flights available from Illinois to Seattle departing last-minute. Users should double check the flight they book to ensure it matches the day, time, and destination they're looking for.
Tue 5/1410:34 pmMDW - SEA
1 stop12h 21mFrontier
Tue 5/218:14 pmSEA - MDW
1 stop12h 55mFrontier
Deal found 5/6$144
Fri 5/1711:31 amMDW - SEA
1 stop9h 11mFrontier
Tue 5/218:14 pmSEA - MDW
1 stop12h 55mFrontier
Deal found 5/6$148
Wed 5/156:27 pmORD - SEA
1 stop16h 03mFrontier
Wed 5/228:04 amSEA - ORD
1 stop15h 09mFrontier
Deal found 5/7$153
Sat 5/185:05 amMDW - SEA
1 stop27h 59mFrontier
Tue 5/218:14 pmSEA - MDW
1 stop12h 55mFrontier
Deal found 5/6$163
Tue 5/1410:34 pmMDW - SEA
1 stop12h 21mFrontier
Tue 5/218:14 pmSEA - MDW
1 stop12h 55mFrontier
Deal found 5/7$164
Thu 5/168:55 pmMDW - SEA
1 stop25h 09mFrontier
Tue 5/218:14 pmSEA - MDW
1 stop12h 55mFrontier
Deal found 5/7$167
Mon 5/139:55 pmMDW - SEA
1 stop13h 49mFrontier
Sat 5/1810:08 pmSEA - MDW
1 stop11h 01mFrontier
Deal found 5/6$170
Mon 5/139:55 pmMDW - SEA
1 stop13h 49mFrontier
Fri 5/177:42 pmSEA - MDW
1 stop14h 12mFrontier
Deal found 5/6$174
Wed 5/155:30 amMDW - SEA
1 stop29h 00mFrontier
Thu 5/168:29 pmSEA - MDW
1 stop12h 07mFrontier
Deal found 5/6$177

One-way flights to Seattle from Illinois

Search for one-way flight options from Illinois to Seattle. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,749,864 searches. Data last updated May 7, 2024.
Users in need of a one-way flight from Illinois to Seattle can choose from these deals. For those needing a return trip from Illinois, there is a search form available above.
Tue 6/410:52 pmORD - SEA
1 stop11h 40mSpirit Airlines
Deal found 5/7$59
Tue 6/410:52 pmORD - SEA
1 stop11h 40mSpirit Airlines
Deal found 5/6$60
Tue 6/410:52 pmORD - SEA
1 stop11h 40mSpirit Airlines
Deal found 5/6$64
Tue 6/1110:01 pmORD - SEA
1 stop12h 31mSpirit Airlines
Deal found 5/7$65
Wed 5/1511:36 amSTL - SEA
1 stop23h 09mSpirit Airlines
Deal found 5/6$68
Tue 6/47:00 amORD - SEA
2 stops27h 32mSpirit Airlines
Deal found 5/6$70
Tue 6/116:00 amORD - SEA
Nonstop4h 27mAlaska Airlines
Deal found 5/6$75
Tue 6/47:00 amORD - SEA
2 stops27h 32mSpirit Airlines
Deal found 5/6$79
Sat 6/156:50 pmORD - SEA
Nonstop4h 44mDelta
Deal found 5/7$80

Find flights from Illinois to Seattle within your budget

Customize your flight search to find flights from Illinois to Seattle 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 2,749,864 searches. Data last updated May 7, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$143 - $221

Route

Depart

Return

Price

Lambert-St LouisSeattle/Tacoma Intl

STL - SEA

STLSEA

Lambert-St Louis

Fri 5/17

1 stop11h 49m

Seattle/Tacoma Intl

Tue 5/28

1 stop11h 06m

$143

Chicago MidwaySeattle/Tacoma Intl

MDW - SEA

MDWSEA

Chicago Midway

Fri 5/17

1 stop9h 11m

Seattle/Tacoma Intl

Tue 5/21

1 stop12h 55m

$148

Chicago O'Hare IntlSeattle/Tacoma Intl

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Wed 5/29

Nonstop4h 35m

Seattle/Tacoma Intl

Wed 6/5

Nonstop4h 06m

$149

Chicago O'Hare IntlSeattle/Tacoma Intl

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Sat 8/17

Nonstop4h 39m

Seattle/Tacoma Intl

Tue 8/20

1 stop9h 45m

$154

Chicago O'Hare IntlSeattle/Tacoma Intl

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Wed 6/5

1 stop12h 50m

Seattle/Tacoma Intl

Wed 6/12

1 stop7h 25m

$156

Chicago O'Hare IntlSeattle/Tacoma Intl

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Tue 8/27

Nonstop4h 30m

Seattle/Tacoma Intl

Tue 9/10

Nonstop3h 58m

$159

Chicago O'Hare IntlSeattle/Tacoma Intl

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Sat 6/1

Nonstop4h 38m

Seattle/Tacoma Intl

Sat 6/8

Nonstop4h 15m

$194

Chicago O'Hare IntlSeattle/Tacoma Intl

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Thu 5/30

Nonstop4h 27m

Seattle/Tacoma Intl

Wed 6/5

Nonstop4h 04m

$197

Chicago O'Hare IntlSeattle/Tacoma Intl

ORD - SEA

ORDSEA

Chicago O'Hare Intl

Mon 6/17

1 stop17h 03m

Seattle/Tacoma Intl

Mon 7/8

1 stop16h 00m

$221

Flights are sorted by cheapest first

Deals found on 5/7

No data available for this route at this time. Please check back soon.

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated May 7, 2024.
See what other customers who have flown with Frontier, Alaska Airlines and United Airlines from Illinois to Seattle have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.2
Very good
6,075 reviews
Check prices

Overall

8.2

Entertainment

7.8

Food

7.3

Comfort

8.1

Crew

8.7

Boarding

8.3

Reviews

1 / 10

The seats are too narrow and uncomfortable. I do appreciate that there was room for my knees. I hate the boarding circus.

Southwest
8.2
Very good
6,075 reviews
Southwest
8.2
Very good
6,075 reviews
Check prices

Overall

8.2

Entertainment

7.8

Food

7.3

Comfort

8.1

Crew

8.7

Boarding

8.3

Reviews

1 / 10

The seats are too narrow and uncomfortable. I do appreciate that there was room for my knees. I hate the boarding circus.

Alaska Airlines
8.1
Very good
9,147 reviews
Southwest
8.2
Very good
6,075 reviews
Check prices

Overall

8.2

Entertainment

7.8

Food

7.3

Comfort

8.1

Crew

8.7

Boarding

8.3

Reviews

1 / 10

The seats are too narrow and uncomfortable. I do appreciate that there was room for my knees. I hate the boarding circus.

Delta
8.1
Very good
10,810 reviews
Southwest
8.2
Very good
6,075 reviews
Check prices

Overall

8.2

Entertainment

7.8

Food

7.3

Comfort

8.1

Crew

8.7

Boarding

8.3

Reviews

1 / 10

The seats are too narrow and uncomfortable. I do appreciate that there was room for my knees. I hate the boarding circus.

WestJet
7.6
Good
2,948 reviews
Southwest
8.2
Very good
6,075 reviews
Check prices

Overall

8.2

Entertainment

7.8

Food

7.3

Comfort

8.1

Crew

8.7

Boarding

8.3

Reviews

1 / 10

The seats are too narrow and uncomfortable. I do appreciate that there was room for my knees. I hate the boarding circus.

United Airlines
7.4
Good
11,073 reviews
Southwest
8.2
Very good
6,075 reviews
Check prices

Overall

8.2

Entertainment

7.8

Food

7.3

Comfort

8.1

Crew

8.7

Boarding

8.3

Reviews

1 / 10

The seats are too narrow and uncomfortable. I do appreciate that there was room for my knees. I hate the boarding circus.

Related info for your journey

Find useful and relevant information for your journey from Illinois to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    Seattle/Tacoma Intl (SEA), located 11.4 mi from the city center, is the airport you fly into when you book flights from Illinois to Seattle.

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

    Yes, there are multiple flights from Illinois to Seattle for under $200. The cheapest flight booked recently is on Multiple Airlines for just $143, but on average you can expect to pay $158.

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

    Cheapflights has at least 20 direct flights from Illinois to Seattle under $200. A good price for a nonstop flight from Illinois to Seattle is less than $215.

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

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

  • What days are nonstop flights available from Illinois to Seattle?

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

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

    Per day, 49 flights depart from Illinois to Seattle on average.
    Early Morning (Midnight to 6am) - 18% of flight departures
    Morning (6am - Noon) - 18% of flight departures
    Afternoon (Noon - 6pm) - 39% of flight departures
    Evening (6pm - Midnight) - 24% of flight departures

  • How long is the flight from Illinois to Seattle?

    Departing from Illinois to Seattle will take you 4h 35m. The distance between Illinois and Seattle 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 Illinois to Seattle one-way?

    The cheapest airlines for a one-way flight from Illinois to Seattle are Spirit Airlines ($59), Alaska Airlines ($75), and Delta ($80).

  • What are the most popular routes from Illinois to Seattle?

    The most popular route from Illinois to Seattle is Chicago O'Hare Intl - Seattle/Tacoma Intl. You may also consider Chicago Midway - Seattle/Tacoma Intl or Lambert-St Louis - Seattle/Tacoma Intl.

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

    Before booking your flight from Illinois to Seattle check out the most popular airlines for this route: Undisclosed Carrier, American Airlines or Alaska Airlines.

  • What are the most reliable airlines from Illinois to Seattle?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Illinois to Seattle on time: WestJet (100%), Aeromexico (100%), KLM (96%).

  • What are the cheapest flights from Illinois to Seattle?

    The cheapest flight price from Illinois to Seattle is $97. On average you can expect to pay $621. The most popular route, (Chicago O'Hare Intl - Seattle/Tacoma Intl), can usually be booked for $149.

  • What does ORD to SEA mean?

    Chicago O'Hare Intl Airport is ORD and Seattle/Tacoma Intl Airport is SEA. These codes are created by the International Air Transport Association (IATA) and airlines use them to identify the departing and arrival airports in the flight routes they service. Chicago Midway Airport (MDW), Moline Quad-City Airport (MLI), Greater Peoria Airport (PIA), Bloomington-Normal Airport (BMI), Springfield Capital Airport (SPI) are other airports near this flight route and their unique identifiers/IATA codes.

  • Can I find deals for flights from Illinois to Seattle that include extra baggage allowance?

    The amount of baggage you can bring on your Illinois to Seattle flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Illinois to Seattle with specific airlines?

    Yes, Cheapflights allows you to browse and filter Illinois to Seattle flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

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

    Yes. In addition to deals on Illinois to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Illinois to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Seattle.

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

    Yes. Cheapflights offers flight deals from Illinois to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from Illinois to Seattle that allow pets onboard?

    Many airlines flying from Illinois to Seattle offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Illinois to Seattle?

    Yes, you can often find last-minute deals on Illinois to Seattle flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Illinois to Seattle flight deals updated?

    The Illinois to Seattle flight deals you see on this page were last updated on 5/7.

See more FAQs

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Top 6 airlines flying from Illinois to Seattle

Discover the top 6 airlines that operate flights from Illinois to Seattle. 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 2,749,864 searches. Data last updated May 7, 2024.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$84Average$444FlexibilityNo cancel feeOn-time75%
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DeltaCheapest$99Average$467FlexibilityNo cancel feeOn-timeN/A
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American AirlinesCheapest$109Average$543FlexibilityNo cancel feeOn-time71%
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United AirlinesCheapest$114Average$583FlexibilityNo cancel feeOn-time69%
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FrontierCheapest$123Average$258FlexibilityNo cancel feeOn-time62%
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Spirit AirlinesCheapest$141Average$324FlexibilityNo cancel feeOn-time65%
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Search flights from Illinois to Seattle by cabin class

Find flights from Illinois to Seattle, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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Hourly flight availability from Illinois to Seattle

Find hourly flight availability from Illinois to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 7, 2024.
5%of flight departuresEarly morningMidnight to 6 am
11%of flight departuresMorning6 am to noon
69%of flight departuresAfternoonNoon to 6 pm
15%of flight departuresEvening6 pm to midnight
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6 AM
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6 PM

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Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Illinois to Seattle?

Deals for Illinois to Seattle flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Illinois to Seattle?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Seattle from Illinois.

Can Cheapflights find flights from Illinois to Seattle with no change fees?

Yes! Cheapflights helps users easily find flights from Illinois to Seattle with no change fees.

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Of course! You can now track prices for flights from Illinois to Seattle and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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