Cheap flights from Seattle to Chicago from $88

Cheapest one-way tickets

Recent finds on different dates, for 1 adult. Booking opens on Aviasales, which shows baggage, fare rules and the live price.

Cheapest

$88

Frontier Airlines, flight F9 3406Found 4 days ago, 1 adult

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4:27pmSeattleWed, Nov 11

Travel time 5h 14m, 1 stopSEAORD

11:41pmChicagoWed, Nov 11

$139

Frontier Airlines, flight F9 4204Found 6 days ago, 1 adult

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9:53pmSeattleTue, Nov 24

Travel time 6h 30m, 1 stopSEAORD

6:23amChicagoWed, Nov 25

$141

Frontier Airlines, flight F9 4204Found yesterday, 1 adult

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9:09pmSeattleSun, Dec 13

Travel time 6h 24m, 1 stopSEAORD

5:33amChicagoMon, Dec 14

$176

Frontier Airlines, flight F9 3406Found 2 days ago, 1 adult

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4:27pmSeattleSat, Oct 31

Travel time 5h 14m, 1 stopSEAORD

11:41pmChicagoSat, Oct 31

$187

Frontier Airlines, flight F9 3406Found yesterday, 1 adult

Check live price

4:27pmSeattleWed, Oct 28

Travel time 5h 14m, 1 stopSEAORD

11:41pmChicagoWed, Oct 28

Round trips

The cheapest return tickets found recently, price for the whole trip.

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Getting from the airportTransfers and car hire in Chicago, booked ahead at a fixed price.
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Things to do in ChicagoPopular tours from $27.95 per person.
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Price calendar

The lowest one-way fare found for each day over the next 60 days. A dash means no recent fare; you can still pick that day.

October 2026

MoTuWeThFrSaSu1234567891011121314151617181920212223242526–27$205 28$187 29$192 30$188 31$176

November 2026

MoTuWeThFrSaSu1$197 2–3$265 4$213 5–6–7–8$197 9–10–11$88 12–13–14–15–16–17–18–19–20–21–22–23–24$139 25–26–27–28–29–30–

December 2026

MoTuWeThFrSaSu1–2–3–4–5–6–7–8–9–10–11–12–13$141 14–15–16–17–18–19–20–21–22–23–24–25262728293031

$141 or lessGreen: the cheapest fifth of fares on this route. Lowest in these 60 days: Nov 11, $88.

Lowest fares by month

In the fares found this week, November has the lowest: from $88 one-way, against $176 in October. Pick a month to see its cheapest date.

Oct$176
Nov$88
Dec$141
Janno fares yet
Febno fares yet
Marno fares yet
Aprno fares yet
Mayno fares yet
Junno fares yet
Julno fares yet
Augno fares yet
Sepno fares yet

Show as a table

Month	Cheapest one-way	Date	Stops
October	$176	Sat, Oct 31	1 stop
November	$88	Wed, Nov 11	1 stop
December	$141	Sun, Dec 13	1 stop
January 2027	—
February 2027	—
March 2027	—
April 2027	—
May 2027	—
June 2027	—
July 2027	—
August 2027	—
September 2027	—

Fares and weather by month

The lowest one-way fare found for each month, next to the weather in Chicago. Average daily high and low and monthly precipitation, 1991–2020 normals.

	Oct2026	Nov	Dec	Jan2027	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep
Lowest fare	$176	$88	$141	–	–	–	–	–	–	–	–	–
High °C	18°	10°	3°	0°	3°	9°	16°	22°	27°	30°	28°	25°
Low °C	8°	2°	-4°	-7°	-5°	0°	5°	11°	17°	20°	19°	15°
Precipitation mm	98	69	59	58	54	68	105	121	115	102	104	85

Source: Chicago on Wikipedia, CC BY-SA 4.0.

Questions travellers ask

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

In the fares found this week, November has the lowest: from $88 one-way, against $176 in October.

What is the weather in Chicago in November?

In November, the cheapest month to fly, the average daily high in Chicago is 10 °C and the low 2 °C.

Are there direct flights from Seattle to Chicago?

Yes. Recent fares include nonstop flights with Southwest Airlines and United Airlines.

How long is the flight from Seattle to Chicago?

A nonstop flight takes about 3h 55m. The distance is 1,716 mi.

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