Routes/Chicago, IL to Seattle, WA

Chicago, IL to Seattle, WA

Average one-way fare in 2026 Q1: $229 · 1733 nonstop miles · 1384 passengers per day.

2026 Q1 fare$229

2025 Q1 fare$228

Change+$1

Passengers/day1384

Distance1733 mi

The average fare a year earlier (2025 Q1) was $228. The change is $1 higher (0.6%).

The largest carrier on this route in 2026 Q1 was Alaska with 39% of passengers. The lowest-fare carrier was Alaska with 39% of passengers, at an average fare of $217.

All routes from Chicago, IL · All routes from Seattle, WA

All quarters on this route

Quarter	Passengers/day	Avg. fare	Largest carrier	Largest share	Lowest-fare carrier
2024 Q1	1366	$221	Alaska	42%	Alaska
2024 Q2	2567	$240	Alaska	44%	Alaska
2024 Q3	3069	$235	Alaska	40%	Alaska
2024 Q4	2173	$242	Alaska	39%	Delta
2025 Q1	1388	$228	Alaska	38%	Delta
2025 Q2	2595	$228	Alaska	39%	Delta
2025 Q3	3145	$228	Alaska	36%	Delta
2025 Q4	1969	$246	Alaska	37%	American
2026 Q1	1384	$229	Alaska	39%	Alaska

Source: U.S. Department of Transportation, Consumer Airfare Report Table 1, 2026 Q1. Figures are average one-way fares paid, including taxes and fees, for the quarter shown. Record: city markets 30977 and 30559; U.S. Department of Transportation, Domestic Airline Consumer Airfare Report, Table 1: top 1,000 contiguous-state city-pair markets (average one-way fare, passengers per day, largest carrier, lowest-fare carrier). Fetched 2026-09-27T00:40:04Z. Source data.