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$102+ Cheap flights from Chicago (CHI) to Seattle (SEA)

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 3/15. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — SEA
dic. 23 — dic. 301
lun. 12/23
lun. 12/30
1 adult, Economy
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The best prices from Chicago to Seattle/Tacoma Intl are usually found in February or January, booked 29 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

Cheap flight deals from Chicago to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Chicago (CHI) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated diciembre 18, 2024.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$179
(Southwest)

One-way from

$102
(United Airlines)

Popular in

July

Cheapest in

February

Average price

$352
Provider with most accurate pricing for Chicago (CHI)-Seattle/Tacoma Intl flight deals.
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Provider most trusted by Cheapflights users for Chicago (CHI)-Seattle/Tacoma Intl flights.
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From Chicago (CHI) to Seattle/Tacoma Intl
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One-way flight from Chicago (CHI) to Seattle/Tacoma Intl
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High demand for flights, 21% potential price rise
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Best time to find cheap flights, 3% potential price drop
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Average for round-trip flights in December 2024
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Find flight deals from Chicago to Seattle

Cheapest flights from Chicago to Seattle
Explore the most affordable flight options available from Chicago to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on diciembre 18, 2024.

This FlightHub deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/256:00 amORD - SEA
1 stop9h 10mFrontier
mar. 12/319:36 pmSEA - ORD
1 stop24h 10mFrontier
Deal found 12/17$274
This Booking.com deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/246:55 amORD - SEA
1 stop8h 15mMultiple Airlines
mié. 1/82:16 pmSEA - ORD
1 stop6h 41mMultiple Airlines
Deal found 12/17$294
This CheapOair deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/308:41 pmMDW - SEA
1 stop23h 20mFrontier
jue. 1/93:15 pmSEA - MDW
1 stop6h 58mFrontier
Deal found 12/17$308
This Delta deal was found by Cheapflights users on 12/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/257:30 amORD - SEA
1 stop7h 14mDelta
mié. 12/255:55 pmSEA - ORD
Nonstop4h 04mDelta
Deal found 12/18$337
This Alaska Airlines deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/257:07 pmORD - SEA
Nonstop4h 53mAlaska Airlines
mié. 1/16:00 amSEA - ORD
Nonstop4h 10mAlaska Airlines
Deal found 12/17$363
This United Airlines deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/232:35 pmORD - SEA
1 stop8h 40mUnited Airlines
mié. 1/15:00 amSEA - ORD
1 stop6h 15mUnited Airlines
Deal found 12/16$416
This American Airlines deal was found by Cheapflights users on 12/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/208:30 pmORD - SEA
Nonstop5h 01mAmerican Airlines
lun. 1/61:35 pmSEA - ORD
Nonstop4h 04mAmerican Airlines
Deal found 12/18$422
This Mytrip deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/319:35 pmORD - SEA
2 stops28h 35mSpirit Airlines
mar. 1/76:11 amSEA - ORD
1 stop10h 37mSpirit Airlines
Deal found 12/17$431
This Sun Country Air deal was found by Cheapflights users on 12/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/2410:00 amORD - SEA
1 stop9h 29mSun Country Air
lun. 12/3011:59 pmSEA - ORD
1 stop15h 39mSun Country Air
Deal found 12/18$450
This Southwest deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/242:50 pmMDW - SEA
2 stops10h 10mSouthwest
jue. 12/268:00 amSEA - MDW
Nonstop4h 00mSouthwest
Deal found 12/17$457
This Southwest deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/2412:15 pmORD - SEA
2 stops12h 45mSouthwest
mar. 12/311:10 pmSEA - ORD
1 stop7h 25mSouthwest
Deal found 12/17$531
This Delta deal was found by Cheapflights users on 12/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/244:50 pmMDW - SEA
1 stop8h 45mDelta
sáb. 12/288:25 amSEA - MDW
1 stop7h 19mDelta
Deal found 12/18$547

Find flights from Chicago to Seattle within your budget

Customize your flight search to find flights from Chicago 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 2,558,603 searches. Data last updated diciembre 18, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

ChicagoSeattle

MDW - SEA

MDWSEA

Chicago Midway

mié. 1/22

9:15 am-11:50 am

Nonstop4h 35m

Seattle/Tacoma Intl

vie. 1/24

10:40 am-4:40 pm

Nonstop4h 00m

$179

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

mar. 1/14

2:25 pm-5:10 pm

Nonstop4h 45m

Seattle/Tacoma Intl

mar. 1/21

6:10 pm-12:11 am

Nonstop4h 01m

$179

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

jue. 1/9

7:25 am-12:19 am

2 stops18h 54m

Seattle/Tacoma Intl

lun. 1/13

9:47 am-7:25 pm

1 stop7h 38m

$180

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

vie. 1/31

6:55 pm-9:15 am

1 stop16h 20m

Seattle/Tacoma Intl

sáb. 2/8

7:55 am-2:03 pm

Nonstop4h 08m

$187

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

sáb. 3/1

7:59 pm-9:20 am

1 stop15h 21m

Seattle/Tacoma Intl

dom. 3/9

8:59 pm-12:54 pm

1 stop13h 55m

$190

ChicagoSeattle

MDW - SEA

MDWSEA

Chicago Midway

sáb. 1/18

5:05 pm-10:55 pm

1 stop7h 50m

Seattle/Tacoma Intl

sáb. 1/25

6:00 am-4:12 pm

1 stop8h 12m

$198

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

mié. 2/5

1:39 pm-12:19 am

1 stop12h 40m

Seattle/Tacoma Intl

lun. 2/10

5:45 am-5:31 am

1 stop21h 46m

$199

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

jue. 1/16

7:15 am-2:00 pm

1 stop8h 45m

Seattle/Tacoma Intl

jue. 1/23

11:59 pm-6:00 am

Nonstop4h 01m

$200

ChicagoSeattle

MDW - SEA

MDWSEA

Chicago Midway

mié. 3/5

7:05 am-12:36 pm

1 stop7h 31m

Seattle/Tacoma Intl

dom. 3/9

2:02 pm-12:17 am

1 stop8h 15m

$201

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

mié. 1/15

1:45 pm-10:40 pm

2 stops10h 55m

Seattle/Tacoma Intl

dom. 1/19

1:40 pm-11:05 pm

1 stop7h 25m

$257

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/18

Showing 1-10 of 24 results
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Compare providers for flights from Chicago to Seattle

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Chicago to Seattle in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*1 star
Kiwi.comPrice Accuracy3 starsTrust Score*3 stars
CheapTicketsDealPrice Accuracy3 starsTrust Score*3 stars
KAYAKPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
Trip.comPrice Accuracy2 starsTrust Score*3 stars
FlightsMojoPrice Accuracy-Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Chicago-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Chicago-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Chicago-Seattle flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Chicago-Seattle flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Chicago-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Chicago to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Chicago 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.

Travel insights for flights from Chicago to Seattle

Get recent, data-driven insights about flights from Chicago to Seattle including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from Chicago to Seattle?

Use this chart to determine the optimal time to book a round-trip flight from Chicago to Seattle. Price data was last updated on December 13, 2024.

The best time to book flights from Chicago to Seattle is 29 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 Chicago to Seattle?

Currently, January is the cheapest month in which you can book a flight from Chicago to Seattle (average of $238). Flying from Chicago to Seattle in July is currently the most expensive (average of $411). 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.

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

Find hourly flight availability from Chicago 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 diciembre 18, 2024.

It’s typically best to fly out from Chicago to Seattle in the evening. Doing so could potentially save you 6% on the flight price compared to flying at noon, which is usually more expensive.

What is the cheapest day to fly from Chicago to Seattle?

Use this chart to determine the cheapest time to fly round-trip from Chicago to Seattle. Price data was last updated on December 16, 2024.

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

Rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Seattle ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.

Temperature in Seattle by month

Plan your trip to Seattle by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Seattle, 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 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

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 diciembre 18, 2024.
Read through reviews of airlines operating flights from Chicago to Seattle, such as Alaska Airlines, American Airlines and Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,848 reviews

Crew

8.7

Food

7.2

Entertainment

7.7

Overall

8.1

Boarding

8.2

Comfort

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Southwest
8.1
Very good
4,848 reviews
Southwest
8.1
Very good
4,848 reviews

Crew

8.7

Food

7.2

Entertainment

7.7

Overall

8.1

Boarding

8.2

Comfort

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Alaska Airlines
8.0
Very good
9,552 reviews
Southwest
8.1
Very good
4,848 reviews

Crew

8.7

Food

7.2

Entertainment

7.7

Overall

8.1

Boarding

8.2

Comfort

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Delta
8.0
Very good
8,604 reviews
Southwest
8.1
Very good
4,848 reviews

Crew

8.7

Food

7.2

Entertainment

7.7

Overall

8.1

Boarding

8.2

Comfort

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

United Airlines
7.4
Good
9,059 reviews
Southwest
8.1
Very good
4,848 reviews

Crew

8.7

Food

7.2

Entertainment

7.7

Overall

8.1

Boarding

8.2

Comfort

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,848 reviews

Crew

8.7

Food

7.2

Entertainment

7.7

Overall

8.1

Boarding

8.2

Comfort

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Related info for your journey

Find useful and relevant information for your journey from Chicago 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 Chicago?

    Seattle/Tacoma Intl (SEA), located 11.4 mi from the city center, is the airport you fly into when you book flights from Chicago to Seattle. 8 airlines have flights to Seattle/Tacoma Intl from Chicago on a regular basis. Booking flights from Chicago to Seattle/Tacoma Intl should not be difficult; the airport handles an average of 7 inbound flights from Chicago per day.

  • What are the cheapest airlines flying from Chicago to Seattle round-trip?

    Our cheapest airline available from Chicago to Seattle is Southwest. Our recent data shows that you can find tickets from as low as $179 on this airline. Additional options worth looking into are Delta and Alaska Airlines, starting at $179 and $187 round-trip. Southwest is priced at 35% lower than the current average price of a flight leaving 3 months from now.

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

    To fly one-way, consider booking your trip with United Airlines, which is currently one of the cheapest options available, starting at $102. Alaska Airlines flights start at $103 while deals on Delta start at $104 one-way.

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

    No one likes to see their flight delayed. When booking a flight from Chicago to Seattle consider choosing Air France (96%), Brussels Airlines (96%) or Korean Air (93%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Chicago to Seattle?

    Looking at all options, your cheapest flight can be booked for $108. While the most popular route (Chicago O'Hare Intl - Seattle/Tacoma Intl) can be booked for $134 on average our data indicates $993 when flying from Chicago to Seattle.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Chicago 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.

  • What is the cheapest month to book a flight from Chicago to Seattle?

    Currently, January is the cheapest month in which you can book a flight from Chicago to Seattle (average of $238). Flying from Chicago to Seattle in July is currently the most expensive (average of $411). 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

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Alternative routes for Chicago to Seattle

See prices for flight routes from nearby airports that may be better suited for you.
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Top 7 airlines flying from Chicago to Seattle

Discover the top 7 airlines that operate flights from Chicago 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 2,558,603 searches. Data last updated diciembre 18, 2024.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$112Average$408FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$115Average$301FlexibilityNo cancel feeOn-time75%
FrontierCheapest$118Average$223FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$125Average$239FlexibilityNo cancel feeOn-time65%
United AirlinesCheapest$144Average$332FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$153Average$323FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$203Average$377FlexibilityNo cancel feeOn-time63%
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