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Cheap flights from Chicago O'Hare Intl Airport to Seattle from £68

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 11/12. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SEA
30 nov — 7 dez1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from Chicago O'Hare Intl to Seattle/Tacoma Intl are usually found in September or February, booked 78 days in advance, depart on a Wednesday or Thursday and return on a Monday

Cheap flight deals from O'Hare Intl to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from O'Hare Intl (ORD) 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 31 outubro 2025.

Round-trip from

£134

One-way from

£68

Popular in

December

Cheapest in

September

Average price

£195

Good round-trip deal

£376 or less
Delta
  • Delta
  • 14/1-18/1
  • Nonstop
  • 8h 38m total
  • Chicago to Seattle
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United Airlines
  • United Airlines
  • 13/12
  • Nonstop
  • 4h 42m total
  • Chicago to Seattle
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Highest demand for flights based on searches. 7% potential increase in price (£13 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (£4 potential savings vs. average return price).
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Average for round-trip flights in October 2025
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Price to beat on a round-trip flight from Chicago O'Hare Intl to Seattle/Tacoma Intl.
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Find flight deals from O'Hare Intl to Seattle

Enter your travel dates to find the best prices.

Cheapest flights from O'Hare Intl to Seattle
Explore the most affordable flight options available from O'Hare Intl to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 31 outubro 2025.

qua 10/1209:02ORD - SEA
Nonstop4h 45mUnited Airlines
seg 15/1213:40SEA - ORD
Nonstop4h 12mUnited Airlines
Deal found 29/10£134
qua 26/1106:00ORD - SEA
Nonstop4h 37mHawaiian Airlines
qua 3/1217:50SEA - ORD
Nonstop4h 09mHawaiian Airlines
Deal found 29/10£141
ter 2/1209:02ORD - SEA
Nonstop4h 43mUnited Airlines
sáb 6/1207:00SEA - ORD
Nonstop4h 09mUnited Airlines
Deal found 29/10£142
dom 21/1219:55ORD - SEA
Nonstop4h 52mUnited Airlines
sex 23/112:35SEA - ORD
1 stop8h 39mUnited Airlines
Deal found 29/10£146
qua 26/1106:00ORD - SEA
Nonstop4h 37mAlaska Airlines
qua 3/1207:20SEA - ORD
1 stop10h 34mAlaska Airlines
Deal found 29/10£149
qui 20/1106:00ORD - SEA
Nonstop4h 40mAlaska Airlines
sáb 22/1100:25SEA - ORD
Nonstop4h 03mAlaska Airlines
Deal found 29/10£150
qua 10/1208:55ORD - SEA
1 stop14h 48mAlaska Airlines
qua 10/1200:18SEA - ORD
Nonstop4h 03mAlaska Airlines
Deal found 29/10£150
qua 10/1216:25ORD - SEA
1 stop8h 30mSouthwest
qui 11/1207:05SEA - ORD
1 stop13h 30mSouthwest
Deal found 29/10£153
ter 30/1219:55ORD - SEA
Nonstop4h 52mUnited Airlines
sex 9/112:35SEA - ORD
1 stop8h 39mUnited Airlines
Deal found 30/10£154
seg 15/1220:59ORD - SEA
1 stop14h 34mAlaska Airlines
seg 19/121:45SEA - ORD
1 stop13h 25mAlaska Airlines
Deal found 29/10£156
qua 3/1215:05ORD - SEA
1 stop11h 07mAlaska Airlines
dom 7/1216:21SEA - ORD
Nonstop4h 09mAlaska Airlines
Deal found 30/10£157
qui 11/1208:55ORD - SEA
1 stop14h 48mAlaska Airlines
qui 11/1200:18SEA - ORD
Nonstop4h 03mAlaska Airlines
Deal found 30/10£159

Cheapflights Fare Finder

 
Customise your flight search to find flights from O'Hare Intl 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 858,174 searches. Data last updated 31 outubro 2025.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Seattle that are best for you.

Fly from

O'Hare Intl

Fly to

Seattle

Route

Depart

Return

Price

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

ter 10/3

14:20-17:00

Nonstop4h 40m

Seattle/Tacoma Intl

qua 11/3

17:45-23:44

Nonstop3h 59m

£134

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

qua 3/12

08:00-10:52

Nonstop4h 52m

Seattle/Tacoma Intl

sáb 6/12

00:18-06:21

Nonstop4h 03m

£150

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

sex 12/12

09:02-11:45

Nonstop4h 43m

Seattle/Tacoma Intl

dom 11/1

14:10-20:17

Nonstop4h 07m

£157

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

ter 2/12

20:59-09:33

1 stop14h 34m

Seattle/Tacoma Intl

ter 9/12

12:08-23:50

1 stop9h 42m

£164

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

qua 19/11

07:47-10:40

Nonstop4h 53m

Seattle/Tacoma Intl

sáb 22/11

17:55-23:59

Nonstop4h 04m

£165

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

qui 4/12

08:00-10:52

Nonstop4h 52m

Seattle/Tacoma Intl

ter 9/12

17:50-23:59

Nonstop4h 09m

£172

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

sex 5/12

18:10-20:50

Nonstop4h 40m

Seattle/Tacoma Intl

sáb 6/12

11:15-17:18

Nonstop4h 03m

£172

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

qua 24/12

15:33-18:16

Nonstop4h 43m

Seattle/Tacoma Intl

seg 29/12

00:25-06:29

Nonstop4h 04m

£172

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

qui 18/12

08:00-10:47

Nonstop4h 47m

Seattle/Tacoma Intl

ter 30/12

17:49-23:59

Nonstop4h 10m

£172

ChicagoSeattle

ORD - SEA

ORDSEA

Chicago O'Hare Intl

sex 21/11

06:00-08:37

Nonstop4h 37m

Seattle/Tacoma Intl

seg 24/11

00:25-06:28

Nonstop4h 03m

£172

Flights are sorted by cheapest return flights first.

Deals found on 28/10

Showing 1-10 of 24 results
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Best time to book a flight from O'Hare Intl to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from O'Hare Intl with our price prediction graph.
Estimated return 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 Chicago O'Hare Intl Airport to Seattle

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

Use this chart to determine the optimal time to book a return flight from O'Hare Intl to Seattle. Price data was last updated on 24 October 2025.

The best time to book flights from Chicago O'Hare Intl Airport to Seattle is 78 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 O'Hare Intl Airport to Seattle?

Currently, September is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Seattle (average of £86). Flying from Chicago O'Hare Intl Airport to Seattle in December is currently the most expensive (average of £134). 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 ORD to SEA?

Find hourly flight availability from O'Hare Intl 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 31 outubro 2025.

A simple way to save on the total cost of your ticket is to fly from Chicago O'Hare Intl Airport to Seattle in the evening. If you’re flexible enough to do this you can expect to save up to 54% on your trip compared to booking a flight in the afternoon.

Related info for your journey

Find useful and relevant information for your journey from O'Hare Intl 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 O'Hare Intl?

    Seattle/Tacoma Intl (SEA) is the airport you will fly into if you book a flight from Chicago O'Hare Intl to Seattle. You should not have trouble finding flights to Seattle/Tacoma Intl from Chicago O'Hare Intl; the airport handles an average of 13 inbound flights from Chicago O'Hare Intl per day. You should also have plenty of airline options to choose from since 0 airlines have flights to the Seattle airport from Chicago O'Hare Intl. It is only a 11.4 mi journey from Seattle/Tacoma Intl (SEA) to Seattle’s city center.

  • How long is the flight from Chicago O'Hare Intl Airport to Seattle?

    For as low as £134, United Airlines can have you in Seattle from Chicago O'Hare Intl Airport in 4h 49m. The distance from Chicago O'Hare Intl Airport to Seattle is about 1715 mi. Most flights are nonstop.

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

    Before booking your flight to Seattle from Chicago O'Hare Intl Airport, check out the most reliable airlines to get you to your destination on time: Air France (92%), Delta (87%), Korean Air( 81%).

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

    Looking at all options, your cheapest flight can be booked for £251. While the most popular route (Chicago O'Hare Intl - Seattle/Tacoma Intl) can be booked for £141 on average, our data indicates £982 when flying from Chicago O'Hare Intl Airport to Seattle.

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

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

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

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

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

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

    Currently, September is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Seattle (average of £86). Flying from Chicago O'Hare Intl Airport to Seattle in December is currently the most expensive (average of £134). 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

Travelling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
Leavenworth
Bothell
SeaTac

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

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

Certainly. Search results for flights to Seattle from O'Hare Intl 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 O'Hare Intl to Seattle become cheaper?

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

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