YOUR NEXT SEATTLE ESCAPEBest fares checked Sep 27, 2026Seven-night round trip · one adult · USD · sampled fares
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Prices may change. Select and confirm the full itinerary with the booking provider. Dates can differ between airport cards.

CHICAGO → SEA

Cheap flights from
Chicago to Seattle.

A great Seattle trip starts with a fare worth finding. Compare the latest samples below, then join our upcoming free newsletter to get standout Chicago flight finds in your inbox.

Last checked Sep 27, 20261 adult · Economy · USDSources & coverage
Lowest recently sampled round trip
$280
Google Flights Compare on Skyscanner ↗

Same airports & dates. Each provider checks its own current prices.

ORD → SEA · Nov 6–Nov 13
Search fare; select your return flight to confirm.

A LOWER FARE. A BIGGER TRIP BUDGET.

What could a better fare change?

Spend more on being in Seattle, and less on getting there. These are real examples from our research—the reason it pays to keep an eye on the fares.

FLEXIBLE TRAVEL DATES$169 less

37% below the priciest date sample

$280 for Nov 6–Nov 13, 2026, compared with $449 for Jul 23–Jul 30, 2027.

12 seven-night date pairs from ORD to the same arrival-airport set (SEA). Lowest returned fare per date pair; checks within 24 hours. Airlines, stops and ticket conditions can differ. A travel-date comparison, not a booking-time prediction.

Explore the cheaper date samples ↗
WHY WATCH THE PRICE?39% price gap

$131 between this search’s high and low

The same dated search ranged from $197 to $328 across 61 historical price observations.

ORD → SEA · Nov 6–Nov 13, 2026. Google Flights history covers Jul 29, 2026–Sep 27, 2026. The percentage is the low below the high. This does not prove when you should book or what subscribers will save.

See the price history ↗
OUR LOWEST RECORDED FARE$280

The lowest seven-night fare in our archive

ORD → SEA · Jan 23–Jan 30, 2027. Recorded Sep 27, 2026.

Our archive starts Sep 27, 2026 and contains 309 seven-night fare observations for this route. Search fare; return may require confirmation. This is our record, not an industry-wide all-time low or a current offer.

How we keep fare records ↗
START WITH THE RIGHT AIRPORT

O’Hare or Midway?

Same dates: Nov 6–Nov 13. Same arrival airports: SEA.

ORD
O’Hare International
$280

1 stop outbound

MDW
Midway International
$359

Nonstop outbound

$79 separates the lowest and highest airport sample for these dates. These are search-result fares for seven-night trips. Flight times, stops and baggage can differ. Ground transport is excluded.

Across 12 matched date pairs in this sample, ORD had the lowest airport fare 12 time(s); MDW had the lowest airport fare 2 time(s). Ties count for each airport. This describes the sampled dates only.

YOUR AIRPORT, YOUR MATH

Which airport wins for you?

A cheaper ticket can come with a pricier ride. Add your own round-trip transport estimate to the matched fares.

ORD

Flight sample $408

$408fare + transport
MDW

Flight sample $482

$482fare + transport

Add your transport estimates to compare your total.

One adult, economy, USD. The two fares use identical dates and arrival-airport sets, checked within 24 hours. Transport starts at $0 because we don’t know your starting point. Baggage and other extras are excluded. Prices and itineraries can differ.

A FEW NUMBERS TO TRAVEL BY

Seattle, by the flight.

4h 30m

Fastest sampled outbound

MDW → SEA, Oct 11. Nonstop.

6

Airlines in the mix

Across 24 seven-night airport/date searches. Includes connecting carriers.

12

Travel windows sampled

Lowest: $280, Nov 6–Nov 13 from ORD.

2 / 2

Origins with nonstop samples

MDW, ORD in these outbound results. This is not a full schedule.

Derived from the current seven-night observations on this page. Outbound times describe the outbound journey only; fare amounts are round-trip search results. See sources and coverage.

A LITTLE FLEXIBILITY CAN HELP

Compare upcoming travel dates.

Lowest fare in each sampled departure month. Seven-night trips only.

Swipe to see more months →

Oct 26Nov 26Dec 26Jan 27Feb 27Mar 27Apr 27May 27Jun 27Jul 27

Tap a bar to see the dates, airports and check time behind that sample.

Read the chart as a data table
Departure monthLowest sampleDate pairs
2026-10$4081
2026-11$2801
2026-12$2842
2027-01$2801
2027-02$3041
2027-03$4491
2027-04$4491
2027-05$4491
2027-06$4492
2027-07$4491

Sampled dates, not a complete fare calendar. Each month can have different date coverage. This chart describes future travel dates, not past price movements.

THE DETAILS BEHIND THE PRICE

Find a fare worth your next trip.

Prices checked within seven days. Use the filters to find a trip that fits.

Round-trip search fares · 36 representative results · return verification marked individually
Dates / airportsAirline / outboundRound tripCheck price
Nov 6–Nov 13ORD → SEA · 7 nightsFrontier1 stop · 10h 42m$280Select return to confirmChecked Sep 27Google Skyscanner ↗
Jan 23–Jan 30ORD → SEA · 7 nightsFrontier1 stop · 10h 53m$280Select return to confirmChecked Sep 27Google Skyscanner ↗
Dec 2–Dec 9ORD → SEA · 7 nightsFrontier1 stop · 10h 40m$284Select return to confirmChecked Sep 27Google Skyscanner ↗
Oct 25–Oct 28ORD → SEA · 3 nightsFrontier1 stop · 20h 18m$288Select return to confirmChecked Sep 27Google Skyscanner ↗
Feb 18–Feb 25ORD → SEA · 7 nightsFrontier1 stop · 11h 48m$304Select return to confirmChecked Sep 27Google Skyscanner ↗
Dec 2–Dec 9MDW → SEA · 7 nightsSouthwestNonstop · 4h 50m$317Select return to confirmChecked Sep 27Google Skyscanner ↗
Jan 23–Jan 30MDW → SEA · 7 nightsSouthwestNonstop · 4h 40m$317Select return to confirmChecked Sep 27Google Skyscanner ↗
Feb 18–Feb 25MDW → SEA · 7 nightsSouthwestNonstop · 4h 35m$317Select return to confirmChecked Sep 27Google Skyscanner ↗
Dec 2–Dec 9ORD → SEA · 7 nightsDeltaNonstop · 4h 57m$317Select return to confirmChecked Sep 27Google Skyscanner ↗
Dec 2–Dec 9ORD → SEA · 7 nightsAmericanNonstop · 4h 58m$317Select return to confirmChecked Sep 27Google Skyscanner ↗
Dec 2–Dec 9ORD → SEA · 7 nightsAlaskaNonstop · 5h 0m$317Select return to confirmChecked Sep 27Google Skyscanner ↗
Jan 23–Jan 30ORD → SEA · 7 nightsDeltaNonstop · 4h 45m$317Select return to confirmChecked Sep 27Google Skyscanner ↗
Jan 23–Jan 30ORD → SEA · 7 nightsAlaskaNonstop · 4h 47m$317Select return to confirmChecked Sep 27Google Skyscanner ↗
Jan 23–Jan 30ORD → SEA · 7 nightsUnitedNonstop · 4h 47m$317Select return to confirmChecked Sep 27Google Skyscanner ↗
Jan 23–Jan 30ORD → SEA · 7 nightsAmericanNonstop · 4h 49m$317Select return to confirmChecked Sep 27Google Skyscanner ↗
Feb 18–Feb 25ORD → SEA · 7 nightsDeltaNonstop · 4h 45m$317Select return to confirmChecked Sep 27Google Skyscanner ↗
Feb 18–Feb 25ORD → SEA · 7 nightsAlaskaNonstop · 4h 41m$317Select return to confirmChecked Sep 27Google Skyscanner ↗
Nov 6–Nov 13ORD → SEA · 7 nightsDeltaNonstop · 4h 45m$359Return also checkedChecked Sep 27Google Skyscanner ↗
Itinerary

ORD → SEA
DL 2041 · 2026-11-06 6:35

SEA → ORD
DL 2055 · 2026-11-13 7:27

Nov 6–Nov 13MDW → SEA · 7 nightsSouthwestNonstop · 4h 45m$359Return also checkedChecked Sep 27Google Skyscanner ↗
Itinerary

MDW → SEA
WN 3032 · 2026-11-06 22

SEA → MDW
WN 4975 · 2026-11-13 15

Oct 25–Oct 28MDW → SEA · 3 nightsSouthwestNonstop · 4h 35m$387Select return to confirmChecked Sep 27Google Skyscanner ↗
Oct 11–Oct 18ORD → SEA · 7 nightsFrontier1 stop · 20h 18m$408Select return to confirmChecked Sep 27Google Skyscanner ↗
Dec 28–Jan 4ORD → SEA · 7 nightsFrontier1 stop · 15h 35m$429Select return to confirmChecked Sep 27Google Skyscanner ↗
Mar 15–Mar 22ORD → SEA · 7 nightsDeltaNonstop · 4h 45m$449Select return to confirmChecked Sep 27Google Skyscanner ↗
Apr 10–Apr 17MDW → SEA · 7 nightsSouthwestNonstop · 4h 30m$449Select return to confirmChecked Sep 27Google Skyscanner ↗
Apr 10–Apr 17ORD → SEA · 7 nightsDeltaNonstop · 4h 45m$449Select return to confirmChecked Sep 27Google Skyscanner ↗
May 6–May 13MDW → SEA · 7 nightsSouthwestNonstop · 4h 30m$449Select return to confirmChecked Sep 27Google Skyscanner ↗
May 6–May 13ORD → SEA · 7 nightsDeltaNonstop · 4h 45m$449Select return to confirmChecked Sep 27Google Skyscanner ↗
Jun 1–Jun 8ORD → SEA · 7 nightsAlaskaNonstop · 4h 39m$449Select return to confirmChecked Sep 27Google Skyscanner ↗
Jun 27–Jul 4ORD → SEA · 7 nightsDeltaNonstop · 4h 45m$449Select return to confirmChecked Sep 27Google Skyscanner ↗
Jul 23–Jul 30ORD → SEA · 7 nightsAlaskaNonstop · 4h 39m$449Select return to confirmChecked Sep 27Google Skyscanner ↗
Jun 1–Jun 8MDW → SEA · 7 nightsDelta1 stop · 9h 23m$469Select return to confirmChecked Sep 27Google Skyscanner ↗
Oct 11–Oct 18MDW → SEA · 7 nightsSouthwestNonstop · 4h 35m$482Select return to confirmChecked Sep 27Google Skyscanner ↗
Mar 15–Mar 22MDW → SEA · 7 nightsSouthwestNonstop · 4h 45m$485Select return to confirmChecked Sep 27Google Skyscanner ↗
Dec 28–Jan 4MDW → SEA · 7 nightsSouthwest2 stops · 18h 10m$501Select return to confirmChecked Sep 27Google Skyscanner ↗
Jul 23–Jul 30MDW → SEA · 7 nightsDelta1 stop · 9h 23m$513Select return to confirmChecked Sep 27Google Skyscanner ↗
Jun 27–Jul 4MDW → SEA · 7 nightsDelta1 stop · 9h 23m$767Select return to confirmChecked Sep 27Google Skyscanner ↗

Prices can change. Cabin baggage and checked bags are not assumed included. Confirm the complete itinerary, airline fare rules and final price on the booking site.

ONE SEARCH, OVER TIME

How this search’s price moved.

ORD → SEA · Nov 6–Nov 13, 2026

Jul 29, 2026$197–$328Sep 27, 2026
Read the historical observations
Observation datePrice
Jul 29, 2026$328
Jul 30, 2026$328
Jul 31, 2026$328
Aug 1, 2026$328
Aug 2, 2026$328
Aug 3, 2026$309
Aug 4, 2026$309
Aug 5, 2026$309
Aug 6, 2026$309
Aug 7, 2026$309
Aug 8, 2026$309
Aug 9, 2026$309
Aug 10, 2026$307
Aug 11, 2026$281
Aug 12, 2026$281
Aug 13, 2026$278
Aug 14, 2026$278
Aug 15, 2026$289
Aug 16, 2026$289
Aug 17, 2026$289
Aug 18, 2026$289
Aug 19, 2026$300
Aug 20, 2026$300
Aug 21, 2026$299
Aug 22, 2026$299
Aug 23, 2026$278
Aug 24, 2026$278
Aug 25, 2026$278
Aug 26, 2026$278
Aug 27, 2026$284
Aug 28, 2026$304
Aug 29, 2026$318
Aug 30, 2026$318
Aug 31, 2026$294
Sep 1, 2026$270
Sep 2, 2026$270
Sep 3, 2026$197
Sep 4, 2026$197
Sep 5, 2026$197
Sep 6, 2026$197
Sep 7, 2026$197
Sep 8, 2026$197
Sep 9, 2026$253
Sep 10, 2026$245
Sep 11, 2026$230
Sep 12, 2026$262
Sep 13, 2026$277
Sep 14, 2026$277
Sep 15, 2026$277
Sep 16, 2026$277
Sep 17, 2026$277
Sep 18, 2026$277
Sep 19, 2026$280
Sep 20, 2026$280
Sep 21, 2026$280
Sep 22, 2026$280
Sep 23, 2026$280
Sep 24, 2026$280
Sep 25, 2026$280
Sep 26, 2026$280
Sep 27, 2026$280

Google Flights price history returned through Scrapingdog for the dates and settings above. It is not a destination-wide average or a prediction. Source checked Sep 27, 2026.

THE FLIGHT IS ONLY PART OF THE TRIP

Arriving in Seattle.

Airport context and source-backed details to help you compare the whole journey.

SEA · Seattle–Tacoma International Airport

Seattle, United States · Airport coordinates 47.448, -122.310

Lowest sample to SEA: $280 round trip from ORD, Nov 6–Nov 13. Different arrival airports may use different dates.

Airport information

Which Seattle airports are included?

This page searches SEA — Seattle–Tacoma International Airport. Airport coverage follows the destination city market in the passenger dataset, with minor airports excluded. Always check the airport code on both legs: a city search can include different arrival airports, and the cheapest option may not be closest to where you are staying.

Read the source

Why this route is in our research

BTS recorded 909,906 scheduled passengers departing O’Hare and Midway for this destination city market from 2025-07 to 2026-06. That puts it at number 14 in our selected ranking. These are historical on-flight market passengers, not unique travelers, current flight frequencies or a measure of search popularity.

Read the source

Check the location before choosing SEA

The airport reference places Seattle–Tacoma International Airport in Seattle, United States, at 47.448°, -122.310°. Use the airport’s official information to plan your arrival and return journey. Our fare table compares air travel only; ground transfers, luggage and accommodation can change the total trip budget.

Read the source
FLIGHT FOUND. ADVENTURE NEXT.

Make a trip of Seattle.

Keep an eye on the whole travel budget, from your first night to your last mile.

A good stay. A happy budget.

Compare places to stay in Seattle. Add your dates, check the location, and compare the final total and cancellation terms.

Explore Seattle stays ↗Booking.com · choose your travel dates

A little freedom to roam.

Planning a drive beyond Seattle? Compare rental cars, mileage, deposits and pickup hours. City-only trip? Public transit may suit you better.

Compare rental cars ↗Discover Cars · enter SEA and your dates

These are planning links, not priced offers. Hotel and car availability is checked by the provider. We currently receive no commission from these links.

GOOD QUESTIONS. STRAIGHT ANSWERS.

Before you take off for Seattle.

How can I get Chicago to Seattle flight deals in my inbox?

Let us do the fare hunting. Our upcoming free newsletter will bring standout Chicago flight finds to your inbox, with travel dates and booking links so you can check the deal quickly. Use the signup panel near the top of this page when signup opens. It's free, and you'll be able to unsubscribe at any time.

What is the cheapest flight to Seattle you have recorded?

The lowest seven-night round-trip search fare in our archive is $280, recorded Sep 27, 2026 for ORD to SEA, Jan 23–Jan 30, 2027. Our route archive starts Sep 27, 2026. This is our observed record, not an industry-wide all-time low, a verified booking price or a current offer.

How much are cheap flights from Chicago to Seattle?

Our lowest current seven-night sample is $280 round trip for one adult in economy, from ORD to SEA, Nov 6–Nov 13, 2026. It was checked Sep 27, 2026. This is a dated search result, not a guaranteed ticket price; confirm the return and full fare conditions before paying.

Is O’Hare or Midway cheaper for Seattle?

For the matched Nov 6–Nov 13, 2026 search, ORD had the lowest sample at $280. The highest and lowest airport fares were $79 apart. That applies to those dates and settings only. Try other matched dates and add your own ground transport cost in the airport calculator above.

Can I fly nonstop from Chicago to Seattle?

The current sample includes a nonstop outbound from MDW to SEA on Dec 2, 2026, with a round-trip search fare of $317. Check the return direction separately: a nonstop outbound does not guarantee a nonstop return.

What is the cheapest month to fly to Seattle?

The travel-period chart compares only the dates we sampled. It cannot establish the cheapest month of the year. Start with a promising sampled period, then check nearby dates with the same trip length. The separate history chart tracks one specific search over time; it is not a travel calendar.

Which Seattle airport should I choose?

This destination market includes Seattle–Tacoma International Airport (SEA). Check the exact arrival code on the fare you choose, then compare the onward journey to your accommodation. The arrival section links airport information and our source-backed planning notes.

Will Skyscanner show the same price as Google Flights?

Not necessarily. The buttons open separate searches with matching airports and dates when a dated sample is available. Providers can show different airlines, sellers, baggage rules and live prices. The sampled Google Flights price is never a Skyscanner quote.

Are bags, hotels and rental cars included?

Do not assume bags are included unless the provider explicitly confirms them. Our research shows flight search fares; the accommodation and rental-car links are separate planning tools. Compare the final total, cancellation terms and location before booking any part of the trip.

Answers use the dated research and sources on this page. Read our flight-saving field notes for a broader planning checklist.

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OPEN ABOUT THE NUMBERS

Sources, coverage & limitations.

This page contains 335 current search-result observations across 26 airport/date searches. Route research is compiled by the Chicago Flight Research desk from the sources below.

Destination photography: photographer, source and reuse license. Airline logos identify the carriers shown in results; no partnership is implied.

BTS demand period: 2025-07 to 2026-06. Searches use one adult, economy, USD and the US market. We do not sell tickets, guarantee fares, or infer baggage inclusions. Read the full methodology