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Cheap flights from Seattle to Chicago O'Hare Intl Airport from C$ 122

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 28/5. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — ORD
31 Mar — 7 Apr1
1 adult

Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Chicago O'Hare Intl are usually found in September or October, booked 85 days in advance, depart on a Thursday or Friday and return on a Tuesday

Cheap flight deals from Seattle to O'Hare Intl

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to O'Hare Intl (ORD). 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 26 March 2025.

Round-trip from

C$ 242

One-way from

C$ 122

Popular in

December

Cheapest in

September

Average price

C$ 476

Good round-trip deal

C$ 314 or less

Good one-way deal

C$ 297 or less
Hawaiian Airlines
  • Hawaiian Airlines
  • 3/5-7/5
  • Nonstop
  • 8h 31m total
  • Seattle to Chicago
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Delta
  • Delta
  • 28/5
  • Nonstop
  • 4h 15m total
  • Seattle to Chicago
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Highest demand for flights based on searches. 5% potential increase in price (C$ 40 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease (C$ 20 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Price to beat on a round-trip flight from Seattle/Tacoma Intl to Chicago O'Hare Intl.
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Price to beat on a one-way flight from Seattle/Tacoma Intl to Chicago O'Hare Intl.
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Find flight deals from Seattle to O'Hare Intl

Cheapest flights from Seattle to O'Hare Intl
Explore the most affordable flight options available from Seattle to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 26 March 2025.

Sat 3/53:58 p.m.SEA - ORD
Nonstop4h 01mHawaiian Airlines
Wed 7/56:00 a.m.ORD - SEA
Nonstop4h 30mHawaiian Airlines
Deal found 25/3C$ 242
Sat 19/411:35 a.m.SEA - ORD
Nonstop4h 08mDelta
Sat 26/47:50 a.m.ORD - SEA
Nonstop4h 44mDelta
Deal found 24/3C$ 243
Sun 20/411:36 p.m.SEA - ORD
Nonstop4h 04mAlaska Airlines
Wed 23/49:00 a.m.ORD - SEA
Nonstop4h 32mAlaska Airlines
Deal found 24/3C$ 249
Sat 3/52:15 p.m.SEA - ORD
Nonstop4h 10mUnited Airlines
Wed 7/57:00 a.m.ORD - SEA
1 stop9h 00mUnited Airlines
Deal found 25/3C$ 250
Sat 3/55:10 a.m.SEA - ORD
1 stop7h 50mSouthwest
Tue 6/55:25 p.m.ORD - SEA
1 stop7h 35mSouthwest
Deal found 25/3C$ 269
Fri 23/511:59 p.m.SEA - ORD
1 stop10h 28mSun Country Air
Mon 26/59:05 p.m.ORD - SEA
1 stop14h 10mSun Country Air
Deal found 25/3C$ 508

Cheapflights Fare Finder

Customize your flight search to find flights from Seattle to O'Hare Intl 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 629,999 searches. Data last updated 26 March 2025.
Use the filters below to find and compare flights from Seattle to Chicago O'Hare Intl Airport that are best for you.

Fly from

Seattle

Fly to

O'Hare Intl

Route

Depart

Return

Price

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Sat 3/5

3:58 p.m.-9:59 p.m.

Nonstop4h 01m

Chicago O'Hare Intl

Wed 7/5

6:00 a.m.-8:30 a.m.

Nonstop4h 30m

C$ 242

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Sat 19/4

11:35 a.m.-5:43 p.m.

Nonstop4h 08m

Chicago O'Hare Intl

Sat 26/4

7:50 a.m.-10:34 a.m.

Nonstop4h 44m

C$ 243

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Sun 20/4

11:36 p.m.-5:40 a.m.

Nonstop4h 04m

Chicago O'Hare Intl

Wed 23/4

9:00 a.m.-11:32 a.m.

Nonstop4h 32m

C$ 249

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Sat 3/5

2:15 p.m.-8:25 p.m.

Nonstop4h 10m

Chicago O'Hare Intl

Wed 7/5

7:00 a.m.-2:00 p.m.

1 stop9h 00m

C$ 250

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Sat 3/5

5:10 a.m.-3:00 p.m.

1 stop7h 50m

Chicago O'Hare Intl

Tue 6/5

5:25 p.m.-11:00 p.m.

1 stop7h 35m

C$ 269

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Fri 23/5

11:59 p.m.-12:27 p.m.

1 stop10h 28m

Chicago O'Hare Intl

Mon 26/5

9:05 p.m.-9:15 a.m.

1 stop14h 10m

C$ 508

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Wed 28/5

7:15 a.m.-1:30 p.m.

Nonstop4h 15m

C$ 122

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Sun 25/5

11:40 p.m.-5:40 a.m.

Nonstop4h 00m

C$ 129

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Tue 15/4

2:50 p.m.-11:05 p.m.

1 stop6h 15m

C$ 134

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Sun 25/5

9:45 a.m.-8:01 p.m.

1 stop8h 16m

C$ 136

Flights are sorted by cheapest round-trip flights first.

Deals found on 25/3

Showing 1-10 of 13 results
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Best time to book a flight from Seattle to O'Hare Intl

Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl 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 Chicago O'Hare Intl Airport

How far ahead should I book a flight from Seattle to Chicago O'Hare Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to O'Hare Intl. Price data was last updated on 21 March 2025.

Booking 85 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to Chicago O'Hare Intl Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Seattle to Chicago O'Hare Intl Airport?

Currently, January is the cheapest month in which you can book a flight from Seattle to Chicago O'Hare Intl Airport (average of C$ 261). Flying from Seattle to Chicago O'Hare Intl Airport in March is currently the most expensive (average of C$ 355). 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 SEA to ORD?

Find hourly flight availability from Seattle to O'Hare Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 26 March 2025.

One of the essential ways to save on airfare from Seattle to Chicago O'Hare Intl Airport is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the afternoon could potentially save you up to 73% on airfare.

What is the cheapest day to fly from Seattle to Chicago O'Hare Intl Airport?

Use this chart to determine the cheapest time to fly round-trip from Seattle to O'Hare Intl. Price data was last updated on 23 March 2025.

Travelers seeking maximum savings on their Seattle to Chicago O'Hare Intl Airport flight should consider departing on Friday afternoons when fares are most often at their lowest. Tuesday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Seattle to Chicago O'Hare Intl Airport

Explore weekly flight availability from Seattle to O'Hare Intl. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 26 March 2025.

The most flights from SEA to ORD are scheduled on a Wednesday (43 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (17 on average).

Rainfall in O'Hare Intl by month

Plan your trip to O'Hare Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Chicago O'Hare Intl Airport ranges from 43.0 - 125.0 mm per month. August is typically the wettest month, when rainfall can reach 125.0 mm. January is typically the driest time to visit Chicago O'Hare Intl Airport when rainfall is around 43.0 mm.

Temperature in O'Hare Intl by month

Plan your trip to O'Hare Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Chicago O'Hare Intl Airport, 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 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -5.0 C).

Reviews of airlines servicing O'Hare Intl

Get insights into the airlines that provide service to O'Hare Intl. 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 O'Hare Intl. Reviews last updated 26 March 2025.
Get a feel of what it's like to fly with Southwest, Alaska Airlines and Delta from Seattle to Chicago by reading reviews from past customers. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,273 reviews
Check prices

Boarding

8.2

Entertainment

7.6

Overall

8.1

Comfort

8.1

Crew

8.6

Food

7.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Southwest
8.1
Very good
4,273 reviews
Southwest
8.1
Very good
4,273 reviews
Check prices

Boarding

8.2

Entertainment

7.6

Overall

8.1

Comfort

8.1

Crew

8.6

Food

7.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Alaska Airlines
8.0
Very good
9,792 reviews
Southwest
8.1
Very good
4,273 reviews
Check prices

Boarding

8.2

Entertainment

7.6

Overall

8.1

Comfort

8.1

Crew

8.6

Food

7.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Delta
8.0
Very good
7,891 reviews
Southwest
8.1
Very good
4,273 reviews
Check prices

Boarding

8.2

Entertainment

7.6

Overall

8.1

Comfort

8.1

Crew

8.6

Food

7.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Hawaiian Airlines
7.9
Good
2,331 reviews
Southwest
8.1
Very good
4,273 reviews
Check prices

Boarding

8.2

Entertainment

7.6

Overall

8.1

Comfort

8.1

Crew

8.6

Food

7.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
United Airlines
7.4
Good
8,608 reviews
Southwest
8.1
Very good
4,273 reviews
Check prices

Boarding

8.2

Entertainment

7.6

Overall

8.1

Comfort

8.1

Crew

8.6

Food

7.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Related info for your journey

Find useful and relevant information for your journey from Seattle to O'Hare Intl. 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 from for flights from Seattle to Chicago O'Hare Intl?

    Seattle/Tacoma Intl (SEA), located 18.4 km from the city centre, is the airport you fly out of when you book flights from Seattle to Chicago O'Hare Intl. 2 airlines have flights from Seattle/Tacoma Intl to Chicago O'Hare Intl on a regular basis. Booking flights from Seattle/Tacoma Intl to Chicago O'Hare Intl should not be difficult; the airport handles an average of 31 outbound flights to Chicago O'Hare Intl per day.

  • What are the cheapest airlines flying from Seattle to Chicago O'Hare Intl Airport round-trip?

    Hawaiian Airlines, at C$ 242, was found to be the cheapest airline from Seattle to Chicago O'Hare Intl Airport.Alternate airlines to your destination round-trip include Delta and Alaska Airlines. Hawaiian Airlines is 45% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Seattle to Chicago O'Hare Intl Airport one-way?

    One-way options have recently been found by users for as low as C$ 122 on Delta. Other airlines that offer cheap prices include Alaska Airlines from C$ 129 and Southwest from C$ 134 one-way.

  • What are the most reliable airlines from Seattle to Chicago O'Hare Intl Airport?

    The top 3 most reliable airlines when flying from Seattle to Chicago O'Hare Intl Airport are United Airlines (91%), Avianca (91%) and American Airlines (89%).

  • What are the cheapest flights from Seattle to Chicago O'Hare Intl Airport?

    Looking at all options, your cheapest flight can be booked for C$ 227. While the most popular route (Seattle/Tacoma Intl - Chicago O'Hare Intl) can be booked for C$ 376 on average our data indicates C$ 416 when flying from Seattle to Chicago O'Hare Intl Airport.

  • Can I find deals for flights from Seattle to O'Hare Intl that include hotel bookings?

    Yes. In addition to deals on Seattle to O'Hare Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to O'Hare Intl?

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

  • Can I find deals for business class flights from Seattle to O'Hare Intl?

    Yes. Cheapflights offers flight deals from Seattle to O'Hare Intl 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 Chicago O'Hare Intl Airport?

    Currently, January is the cheapest month in which you can book a flight from Seattle to Chicago O'Hare Intl Airport (average of C$ 261). Flying from Seattle to Chicago O'Hare Intl Airport in March is currently the most expensive (average of C$ 355). 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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Elk Grove Village
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Top 2 airlines flying from Seattle to O'Hare Intl

Discover the top 2 airlines that operate flights from Seattle to O'Hare Intl. 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 629,999 searches. Data last updated 26 March 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapestC$ 121AverageC$ 521FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Alaska AirlinesCheapestC$ 182AverageC$ 351FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights

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 Seattle to O'Hare Intl?

Cheapflights makes it easy to find Seattle to O'Hare Intl flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Seattle to O'Hare Intl?

Cheapflights simply makes it quick and affordable to book flights from Seattle to O'Hare Intl by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Seattle to O'Hare Intl with no change fees?

Certainly. Search results for flights to O'Hare Intl from Seattle shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Seattle to O'Hare Intl become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to O'Hare Intl from Seattle today and book when prices fit your budget.

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